make-config.sh

   1 #!/bin/sh -
   2 #@ Please see INSTALL and make.rc instead.
   3
   4 LC_ALL=C
   5 export LC_ALL
   6
   7 # For heaven's sake auto-redirect on SunOS/Solaris
   8 if [ "x${SHELL}" = x ] || [ "${SHELL}" = /bin/sh ] && \
   9       [ -f /usr/xpg4/bin/sh ] && [ -x /usr/xpg4/bin/sh ]; then
  10    SHELL=/usr/xpg4/bin/sh
  11    export SHELL
  12    exec /usr/xpg4/bin/sh "${0}" "${@}"
  13 fi
  14 [ -n "${SHELL}" ] || SHELL=/bin/sh
  15 export SHELL
  16
  17 # The feature set, to be kept in sync with make.rc
  18 # If no documentation given, the option is used as such; if doc is a hyphen,
  19 # entry is suppressed when configuration overview is printed, and also in the
  20 # *features* string: most likely for obsolete features etc.
  21 XOPTIONS="\
  22    ICONV='Character set conversion using iconv(3)' \
  23    MAILDIR='Maildir E-mail directories' \
  24    SOCKETS='Network support' \
  25       TLS='Transport Layer Security (OpenSSL / LibreSSL)' \
  26          TLS_ALL_ALGORITHMS='Support of all digest and cipher algorithms' \
  27       SMTP='Simple Mail Transfer Protocol client' \
  28       POP3='Post Office Protocol Version 3 client' \
  29       IMAP='IMAP v4r1 client' \
  30       GSSAPI='Generic Security Service authentication' \
  31       NETRC='.netrc file support' \
  32       AGENT='-' \
  33       MD5='MD5 message digest (APOP, CRAM-MD5)' \
  34    IDNA='Internationalized Domain Names for Applications (encode only)' \
  35    IMAP_SEARCH='IMAP-style search expressions' \
  36    REGEX='Regular expressions' \
  37    MLE='Mailx Line Editor' \
  38       HISTORY='Line editor history management' \
  39       KEY_BINDINGS='Configurable key bindings' \
  40    TERMCAP='Terminal capability queries (termcap(5))' \
  41       TERMCAP_VIA_TERMINFO='Terminal capability queries use terminfo(5)' \
  42    ERRORS='Log message ring' \
  43    SPAM_SPAMC='Spam management via spamc(1) of spamassassin(1)' \
  44    SPAM_SPAMD='-' \
  45    SPAM_FILTER='Freely configurable *spam-filter-..*s' \
  46    DOCSTRINGS='Command documentation help strings' \
  47    UISTRINGS='User interface and error message strings' \
  48    QUOTE_FOLD='Extended *quote-fold*ing' \
  49    FILTER_HTML_TAGSOUP='Simple built-in HTML-to-text display filter' \
  50    COLOUR='Coloured message display' \
  51    DOTLOCK='Dotlock files and privilege-separated dotlock program' \
  52 "
  53
  54 # Options which are automatically deduced from host environment, i.e., these
  55 # need special treatment all around here to warp from/to OPT_ stuff
  56 # setlocale, C90AMEND1, NL_LANGINFO, wcwidth
  57 XOPTIONS_DETECT="\
  58    LOCALES='Locale support - printable characters etc. depend on environment' \
  59    MULTIBYTE_CHARSETS='Multibyte character sets' \
  60    TERMINAL_CHARSET='Automatic detection of terminal character set' \
  61    WIDE_GLYPHS='Wide glyph support' \
  62 "
  63
  64 # Rather special options, for custom building, or which always exist.
  65 # Mostly for generating the visual overview and the *features* string
  66 XOPTIONS_XTRA="\
  67    MIME='Multipurpose Internet Mail Extensions' \
  68    SMIME='S/MIME message signing, verification, en- and decryption' \
  69    CROSS_BUILD='Cross-compilation: trust any detected environment' \
  70    DEBUG='Debug enabled binary, not for end-users: THANKS!' \
  71    DEVEL='Computers do not blunder' \
  72 "
  73
  74 # To avoid too many recompilations we use a two-stage "configuration changed"
  75 # detection, the first uses mk-config.lst, which only goes for actual user
  76 # config settings etc. the second uses mk-config.h, which thus includes the
  77 # things we have truly detected.  This does not work well for multiple choice
  78 # values of which only one will be really used, so those user wishes may not be
  79 # placed in the header, only the really detected one (but that has to!).
  80 # Used for grep(1), for portability assume fixed matching only.
  81 H_BLACKLIST='-e VAL_RANDOM -e VAL_IDNA'
  82
  83 # The problem is that we don't have any tools we can use right now, so
  84 # encapsulate stuff in functions which get called in right order later on
  85
  86 option_reset() {
  87    set -- ${OPTIONS}
  88    for i
  89    do
  90       eval OPT_${i}=0
  91    done
  92 }
  93
  94 option_maximal() {
  95    set -- ${OPTIONS}
  96    for i
  97    do
  98       eval OPT_${i}=1
  99    done
 100    OPT_DOTLOCK=require OPT_ICONV=require OPT_REGEX=require
 101 }
 102
 103 option_setup() {
 104    option_parse OPTIONS_DETECT "${XOPTIONS_DETECT}"
 105    option_parse OPTIONS "${XOPTIONS}"
 106    option_parse OPTIONS_XTRA "${XOPTIONS_XTRA}"
 107    OPT_MIME=1
 108
 109    # Predefined CONFIG= urations take precedence over anything else
 110    if [ -n "${CONFIG}" ]; then
 111       option_reset
 112       case "${CONFIG}" in
 113       [nN][uU][lL][lL])
 114          ;;
 115       [nN][uU][lL][lL][iI])
 116          OPT_ICONV=require
 117          OPT_UISTRINGS=1
 118          ;;
 119       [mM][iI][nN][iI][mM][aA][lL])
 120          OPT_DOTLOCK=require OPT_ICONV=require OPT_REGEX=require
 121          OPT_COLOUR=1
 122          OPT_DOCSTRINGS=1
 123          OPT_UISTRINGS=1
 124          OPT_ERRORS=1
 125          OPT_IDNA=1
 126          OPT_MAILDIR=1
 127          OPT_MLE=1
 128             OPT_HISTORY=1 OPT_KEY_BINDINGS=1
 129          OPT_SPAM_FILTER=1
 130          ;;
 131       [nN][eE][tT][sS][eE][nN][dD])
 132          OPT_DOTLOCK=require OPT_ICONV=require OPT_REGEX=require
 133          OPT_SOCKETS=require
 134             OPT_TLS=require
 135             OPT_SMTP=require
 136             OPT_GSSAPI=1 OPT_NETRC=1
 137                OPT_AGENT=1
 138          OPT_COLOUR=1
 139          OPT_DOCSTRINGS=1
 140          OPT_UISTRINGS=1
 141          OPT_ERRORS=1
 142          OPT_IDNA=1
 143          OPT_MAILDIR=1
 144          OPT_MLE=1
 145             OPT_HISTORY=1 OPT_KEY_BINDINGS=1
 146          OPT_SPAM_FILTER=1
 147          ;;
 148       [mM][aA][xX][iI][mM][aA][lL])
 149          option_maximal
 150          ;;
 151       [dD][eE][vV][eE][lL])
 152          option_maximal
 153          OPT_DEVEL=1 OPT_DEBUG=1 OPT_NYD2=1
 154          ;;
 155       [oO][dD][eE][vV][eE][lL])
 156          option_maximal
 157          OPT_DEVEL=1
 158          ;;
 159       *)
 160          echo >&2 "Unknown CONFIG= setting: ${CONFIG}"
 161          echo >&2 '   NULL, NULLI, MINIMAL, NETSEND, MAXIMAL'
 162          exit 1
 163          ;;
 164       esac
 165       msg_nonl "CONFIG=${CONFIG} ... "
 166    fi
 167 }
 168
 169 # Inter-relationships XXX sort this!
 170 option_update() {
 171    if feat_no TLS; then
 172       OPT_TLS_ALL_ALGORITHMS=0
 173    fi
 174
 175    if feat_no SMTP && feat_no POP3 && feat_no IMAP; then
 176       OPT_SOCKETS=0
 177    fi
 178    if feat_no SOCKETS; then
 179       if feat_require SMTP; then
 180          msg 'ERROR: need SOCKETS for required feature SMTP'
 181          config_exit 13
 182       fi
 183       if feat_require POP3; then
 184          msg 'ERROR: need SOCKETS for required feature POP3'
 185          config_exit 13
 186       fi
 187       if feat_require IMAP; then
 188          msg 'ERROR: need SOCKETS for required feature IMAP'
 189          config_exit 13
 190       fi
 191       OPT_TLS=0 OPT_TLS_ALL_ALGORITHMS=0
 192       OPT_SMTP=0 OPT_POP3=0 OPT_IMAP=0
 193       OPT_GSSAPI=0 OPT_NETRC=0 OPT_AGENT=0
 194    fi
 195    if feat_no SMTP && feat_no IMAP; then
 196       OPT_GSSAPI=0
 197    fi
 198
 199    if feat_no ICONV; then
 200       if feat_yes IMAP; then
 201          if feat_yes ALWAYS_UNICODE_LOCALE; then
 202             msg 'WARN: no ICONV, keeping IMAP due to ALWAYS_UNICODE_LOCALE!'
 203          elif feat_require IMAP; then
 204             msg 'ERROR: need ICONV for required feature IMAP'
 205             config_exit 13
 206          else
 207             msg 'ERROR: disabling IMAP due to missing ICONV'
 208             OPT_IMAP=0
 209          fi
 210       fi
 211
 212       if feat_yes IDNA; then
 213          if feat_require IDNA; then
 214             msg 'ERROR: need ICONV for required feature IDNA'
 215             config_exit 13
 216          fi
 217          msg 'ERROR: disabling IDNA due to missing ICONV'
 218          OPT_IDNA=0
 219       fi
 220    fi
 221
 222    if feat_no MLE; then
 223       OPT_HISTORY=0 OPT_KEY_BINDINGS=0
 224    fi
 225
 226    # If we don't need MD5 leave it alone
 227    if feat_no SOCKETS; then
 228       OPT_MD5=0
 229    fi
 230
 231    if feat_no TERMCAP; then
 232       OPT_TERMCAP_VIA_TERMINFO=0
 233    fi
 234
 235    if feat_yes DEVEL; then
 236       OPT_DEBUG=1
 237    fi
 238 }
 239
 240 rc=./make.rc
 241 lst=.obj/mk-config.lst
 242 ev=.obj/mk-config.ev
 243 h=.obj/mk-config.h h_name=mk-config.h
 244 mk=.obj/mk-config.mk
 245
 246 newlst=.obj/mk-nconfig.lst
 247 newmk=.obj/mk-nconfig.mk
 248 oldmk=.obj/mk-oconfig.mk
 249 newev=.obj/mk-nconfig.ev
 250 newh=.obj/mk-nconfig.h
 251 oldh=.obj/mk-oconfig.h
 252 tmp0=.obj/___tmp
 253 tmp=${tmp0}1$$
 254 tmp2=${tmp0}2$$
 255
 256 ##  --  >8  - << OPTIONS | OS/CC >> -  8<  --  ##
 257
 258 # Note that potential duplicates in PATH, C_INCLUDE_PATH etc. will be cleaned
 259 # via path_check() later on once possible
 260
 261 COMMLINE="${*}"
 262
 263 # TODO cc_maxopt is brute simple, we should compile test program and dig real
 264 # compiler versions for known compilers, then be more specific
 265 [ -n "${cc_maxopt}" ] || cc_maxopt=100
 266 #cc_force_no_stackprot=
 267 #ld_need_R_flags=
 268 #ld_no_bind_now=
 269 #ld_rpath_not_runpath=
 270
 271 _CFLAGS= _LDFLAGS=
 272
 273 os_early_setup() {
 274    # We don't "have any utility" (see make.rc)
 275    [ -n "${OS}" ] && [ -n "${OSFULLSPEC}" ] ||
 276       thecmd_testandset_fail uname uname
 277
 278    [ -n "${OS}" ] || OS=`${uname} -s`
 279    export OS
 280    msg 'Operating system is %s' "${OS}"
 281
 282    if [ ${OS} = SunOS ]; then
 283       # According to standards(5), this is what we need to do
 284       if [ -d /usr/xpg4 ]; then :; else
 285          msg 'ERROR: On SunOS / Solaris we need /usr/xpg4 environment!  Sorry.'
 286          config_exit 1
 287       fi
 288       PATH="/usr/xpg4/bin:/usr/ccs/bin:/usr/bin:${PATH}"
 289       [ -d /usr/xpg6 ] && PATH="/usr/xpg6/bin:${PATH}"
 290       export PATH
 291    fi
 292 }
 293
 294 os_setup() {
 295    # OSFULLSPEC is used to recognize changes (i.e., machine type, updates
 296    # etc.), it is not baked into the binary
 297    [ -n "${OSFULLSPEC}" ] || OSFULLSPEC=`${uname} -a`
 298
 299    if [ ${OS} = darwin ]; then
 300       msg ' . have special Darwin environmental addons...'
 301       LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:${DYLD_LIBRARY_PATH}
 302    elif [ ${OS} = sunos ]; then
 303       msg ' . have special SunOS / Solaris "setup" rules ...'
 304       _os_setup_sunos
 305    elif [ ${OS} = unixware ]; then
 306       if feat_yes AUTOCC && acmd_set CC cc; then
 307          msg ' . have special UnixWare environmental rules ...'
 308          feat_yes DEBUG && _CFLAGS='-v -Xa -g' || _CFLAGS='-Xa -O'
 309
 310          CFLAGS="${_CFLAGS} ${EXTRA_CFLAGS}"
 311          LDFLAGS="${_LDFLAGS} ${EXTRA_LDFLAGS}"
 312          export CC CFLAGS LDFLAGS
 313          OPT_AUTOCC=0 ld_need_R_flags=-R
 314       fi
 315    elif [ -n "${VERBOSE}" ]; then
 316       msg ' . no special treatment for this system necessary or known'
 317    fi
 318
 319    # Sledgehammer: better set _GNU_SOURCE
 320    # And in general: oh, boy!
 321    OS_DEFINES="${OS_DEFINES}#define _GNU_SOURCE\n"
 322    #OS_DEFINES="${OS_DEFINES}#define _POSIX_C_SOURCE 200809L\n"
 323    #OS_DEFINES="${OS_DEFINES}#define _XOPEN_SOURCE 700\n"
 324    #[ ${OS} = darwin ] && OS_DEFINES="${OS_DEFINES}#define _DARWIN_C_SOURCE\n"
 325
 326    # On pkgsrc(7) systems automatically add /usr/pkg/*
 327    if [ -d /usr/pkg ] && feat_yes USE_PKGSYS; then
 328       msg ' . found pkgsrc(7), merging C_INCLUDE_PATH and LD_LIBRARY_PATH'
 329       C_INCLUDE_PATH=/usr/pkg/include:${C_INCLUDE_PATH}
 330       LD_LIBRARY_PATH=/usr/pkg/lib:${LD_LIBRARY_PATH}
 331       ld_rpath_not_runpath=1
 332    fi
 333 }
 334
 335 _os_setup_sunos() {
 336    C_INCLUDE_PATH=/usr/xpg4/include:${C_INCLUDE_PATH}
 337    LD_LIBRARY_PATH=/usr/xpg4/lib:${LD_LIBRARY_PATH}
 338
 339    # Include packages
 340    if [ -d /opt/csw ] && feat_yes USE_PKGSYS; then
 341       msg ' . found OpenCSW PKGSYS, merging C_INCLUDE_PATH and LD_LIBRARY_PATH'
 342       C_INCLUDE_PATH=/opt/csw/include:${C_INCLUDE_PATH}
 343       LD_LIBRARY_PATH=/opt/csw/lib:${LD_LIBRARY_PATH}
 344       ld_no_bind_now=1 ld_rpath_not_runpath=1
 345    fi
 346    if [ -d /opt/schily ] && feat_yes USE_PKGSYS; then
 347       msg ' . found Schily PKGSYS, merging C_INCLUDE_PATH and LD_LIBRARY_PATH'
 348       C_INCLUDE_PATH=/opt/schily/include:${C_INCLUDE_PATH}
 349       LD_LIBRARY_PATH=/opt/schily/lib:${LD_LIBRARY_PATH}
 350       ld_no_bind_now=1 ld_rpath_not_runpath=1
 351    fi
 352
 353    OS_DEFINES="${OS_DEFINES}#define __EXTENSIONS__\n"
 354    #OS_DEFINES="${OS_DEFINES}#define _POSIX_C_SOURCE 200112L\n"
 355
 356    if feat_yes AUTOCC; then
 357       if acmd_set CC cc; then
 358          feat_yes DEBUG && _CFLAGS="-v -Xa -g" || _CFLAGS="-Xa -O"
 359
 360          CFLAGS="${_CFLAGS} ${EXTRA_CFLAGS}"
 361          LDFLAGS="${_LDFLAGS} ${EXTRA_LDFLAGS}"
 362          export CC CFLAGS LDFLAGS
 363          OPT_AUTOCC=0 ld_need_R_flags=-R
 364       else
 365          cc_maxopt=2 cc_force_no_stackprot=1
 366       fi
 367    fi
 368 }
 369
 370 # Check out compiler ($CC) and -flags ($CFLAGS)
 371 cc_setup() {
 372    # Even though it belongs into cc_flags we will try to compile and link
 373    # something, so ensure we have a clean state regarding CFLAGS/LDFLAGS or
 374    # EXTRA_CFLAGS/EXTRA_LDFLAGS
 375    if feat_no AUTOCC; then
 376       _cc_default
 377       # Ensure those don't do any harm
 378       EXTRA_CFLAGS= EXTRA_LDFLAGS=
 379       export EXTRA_CFLAGS EXTRA_LDFLAGS
 380       return
 381    else
 382       CFLAGS= LDFLAGS=
 383       export CFLAGS LDFLAGS
 384    fi
 385
 386    [ -n "${CC}" ] && { _cc_default; return; }
 387
 388    msg_nonl 'Searching for a usable C compiler .. $CC='
 389    if acmd_set CC clang || acmd_set CC gcc ||
 390          acmd_set CC tcc || acmd_set CC pcc ||
 391          acmd_set CC c89 || acmd_set CC c99; then
 392       :
 393    else
 394       msg 'boing booom tschak'
 395       msg 'ERROR: I cannot find a compiler!'
 396       msg ' Neither of clang(1), gcc(1), tcc(1), pcc(1), c89(1) and c99(1).'
 397       msg ' Please set ${CC} environment variable, maybe ${CFLAGS}, rerun.'
 398       config_exit 1
 399    fi
 400    msg '%s' "${CC}"
 401    export CC
 402 }
 403
 404 _cc_default() {
 405    if [ -z "${CC}" ]; then
 406       msg 'To go on like you have chosen, please set $CC, rerun.'
 407       config_exit 1
 408    fi
 409
 410    if [ -z "${VERBOSE}" ] && [ -f ${lst} ] && feat_no DEBUG; then
 411       :
 412    else
 413       msg 'Using C compiler ${CC}=%s' "${CC}"
 414    fi
 415 }
 416
 417 cc_flags() {
 418    if feat_yes AUTOCC; then
 419       if [ -f ${lst} ] && feat_no DEBUG && [ -z "${VERBOSE}" ]; then
 420          cc_check_silent=1
 421          msg 'Detecting ${CFLAGS}/${LDFLAGS} for ${CC}=%s, just a second..' \
 422             "${CC}"
 423       else
 424          cc_check_silent=
 425          msg 'Testing usable ${CFLAGS}/${LDFLAGS} for ${CC}=%s' "${CC}"
 426       fi
 427
 428       i=`echo "${CC}" | ${awk} 'BEGIN{FS="/"}{print $NF}'`
 429       if { echo "${i}" | ${grep} tcc; } >/dev/null 2>&1; then
 430          msg ' . have special tcc(1) environmental rules ...'
 431          _cc_flags_tcc
 432       else
 433          # As of pcc CVS 2016-04-02, stack protection support is announced but
 434          # will break if used on Linux
 435          if { echo "${i}" | ${grep} pcc; } >/dev/null 2>&1; then
 436             cc_force_no_stackprot=1
 437          fi
 438          _cc_flags_generic
 439       fi
 440
 441       feat_no DEBUG && _CFLAGS="-DNDEBUG ${_CFLAGS}"
 442       CFLAGS="${_CFLAGS} ${EXTRA_CFLAGS}"
 443       LDFLAGS="${_LDFLAGS} ${EXTRA_LDFLAGS}"
 444    else
 445       if feat_no DEBUG; then
 446          CFLAGS="-DNDEBUG ${CFLAGS}"
 447       fi
 448    fi
 449    export CFLAGS LDFLAGS
 450 }
 451
 452 _cc_flags_tcc() {
 453    __cflags=${_CFLAGS} __ldflags=${_LDFLAGS}
 454    _CFLAGS= _LDFLAGS=
 455
 456    cc_check -W
 457    cc_check -Wall
 458    cc_check -Wextra
 459    cc_check -pedantic
 460
 461    if feat_yes DEBUG; then
 462       # May have problems to find libtcc cc_check -b
 463       cc_check -g
 464    fi
 465
 466    if ld_check -Wl,-rpath =./ no; then
 467       ld_need_R_flags=-Wl,-rpath=
 468       if [ -z "${ld_rpath_not_runpath}" ]; then
 469          ld_check -Wl,--enable-new-dtags
 470       else
 471          msg ' ! $LD_LIBRARY_PATH adjusted, not trying --enable-new-dtags'
 472       fi
 473       ld_runtime_flags # update!
 474    fi
 475
 476    _CFLAGS="${_CFLAGS} ${__cflags}" _LDFLAGS="${_LDFLAGS} ${__ldflags}"
 477    unset __cflags __ldflags
 478 }
 479
 480 _cc_flags_generic() {
 481    __cflags=${_CFLAGS} __ldflags=${_LDFLAGS}
 482    _CFLAGS= _LDFLAGS=
 483    feat_yes DEVEL && cc_check -std=c89 || cc_check -std=c99
 484
 485    # E.g., valgrind does not work well with high optimization
 486    if [ ${cc_maxopt} -gt 1 ] && feat_yes NOMEMDBG &&
 487          feat_no ASAN_ADDRESS && feat_no ASAN_MEMORY; then
 488       msg ' ! OPT_NOMEMDBG, setting cc_maxopt=1 (-O1)'
 489       cc_maxopt=1
 490    fi
 491    # Check -g first since some others may rely upon -g / optim. level
 492    if feat_yes DEBUG; then
 493       cc_check -O
 494       cc_check -g
 495    elif [ ${cc_maxopt} -gt 2 ] && cc_check -O3; then
 496       :
 497    elif [ ${cc_maxopt} -gt 1 ] && cc_check -O2; then
 498       :
 499    elif [ ${cc_maxopt} -gt 0 ] && cc_check -O1; then
 500       :
 501    else
 502       cc_check -O
 503    fi
 504
 505    if feat_yes AMALGAMATION; then
 506       cc_check -pipe
 507    fi
 508
 509    #if feat_yes DEVEL && cc_check -Weverything; then
 510    #   :
 511    #else
 512       cc_check -W
 513       cc_check -Wall
 514       cc_check -Wextra
 515       cc_check -Wbad-function-cast
 516       cc_check -Wcast-align
 517       cc_check -Wcast-qual
 518       cc_check -Winit-self
 519       cc_check -Wmissing-prototypes
 520       cc_check -Wshadow
 521       cc_check -Wunused
 522       cc_check -Wwrite-strings
 523       cc_check -Wno-long-long
 524    #fi
 525    cc_check -pedantic
 526
 527    if feat_yes AMALGAMATION && feat_no DEVEL; then
 528       cc_check -Wno-unused-function
 529    fi
 530    feat_no DEVEL && cc_check -Wno-unused-result # XXX do right way (pragma too)
 531
 532    cc_check -fno-unwind-tables
 533    cc_check -fno-asynchronous-unwind-tables
 534    cc_check -fstrict-aliasing
 535    if cc_check -fstrict-overflow && feat_yes DEVEL; then
 536       cc_check -Wstrict-overflow=5
 537    fi
 538
 539    if feat_yes DEBUG || feat_yes FORCED_STACKPROT; then
 540       if [ -z "${cc_force_no_stackprot}" ]; then
 541          if cc_check -fstack-protector-strong ||
 542                cc_check -fstack-protector-all; then
 543             cc_check -D_FORTIFY_SOURCE=2
 544          fi
 545       else
 546          msg ' ! Not checking for -fstack-protector compiler option,'
 547          msg ' ! since that caused errors in a "similar" configuration.'
 548          msg ' ! You may turn off OPT_AUTOCC and use your own settings, rerun'
 549       fi
 550    fi
 551
 552    # LD (+ dependend CC)
 553
 554    if feat_yes ASAN_ADDRESS; then
 555       _ccfg=${_CFLAGS}
 556       if cc_check -fsanitize=address && ld_check -fsanitize=address; then
 557          :
 558       else
 559          feat_bail_required ASAN_ADDRESS
 560          _CFLAGS=${_ccfg}
 561       fi
 562    fi
 563
 564    if feat_yes ASAN_MEMORY; then
 565       _ccfg=${_CFLAGS}
 566       if cc_check -fsanitize=memory && ld_check -fsanitize=memory &&
 567             cc_check -fsanitize-memory-track-origins=2 &&
 568             ld_check -fsanitize-memory-track-origins=2; then
 569          :
 570       else
 571          feat_bail_required ASAN_MEMORY
 572          _CFLAGS=${_ccfg}
 573       fi
 574    fi
 575
 576    if feat_yes USAN; then
 577       _ccfg=${_CFLAGS}
 578       if cc_check -fsanitize=undefined && ld_check -fsanitize=undefined; then
 579          :
 580       else
 581          feat_bail_required USAN
 582          _CFLAGS=${_ccfg}
 583       fi
 584    fi
 585
 586    ld_check -Wl,-z,relro
 587    if [ -z "${ld_no_bind_now}" ]; then
 588       ld_check -Wl,-z,now
 589    else
 590       msg ' ! $LD_LIBRARY_PATH adjusted, not trying -Wl,-z,now'
 591    fi
 592    ld_check -Wl,-z,noexecstack
 593    ld_check -Wl,--as-needed
 594    if ld_check -Wl,-rpath =./ no; then
 595       ld_need_R_flags=-Wl,-rpath=
 596       # Choose DT_RUNPATH (after $LD_LIBRARY_PATH) over DT_RPATH (before)
 597       if [ -z "${ld_rpath_not_runpath}" ]; then
 598          ld_check -Wl,--enable-new-dtags
 599       else
 600          msg ' ! $LD_LIBRARY_PATH adjusted, not trying --enable-new-dtags'
 601       fi
 602       ld_runtime_flags # update!
 603    elif ld_check -Wl,-R ./ no; then
 604       ld_need_R_flags=-Wl,-R
 605       if [ -z "${ld_rpath_not_runpath}" ]; then
 606          ld_check -Wl,--enable-new-dtags
 607       else
 608          msg ' ! $LD_LIBRARY_PATH adjusted, not trying --enable-new-dtags'
 609       fi
 610       ld_runtime_flags # update!
 611    fi
 612
 613    # Address randomization
 614    _ccfg=${_CFLAGS}
 615    if cc_check -fPIE || cc_check -fpie; then
 616       ld_check -pie || _CFLAGS=${_ccfg}
 617    fi
 618    unset _ccfg
 619
 620    _CFLAGS="${_CFLAGS} ${__cflags}" _LDFLAGS="${_LDFLAGS} ${__ldflags}"
 621    unset __cflags __ldflags
 622 }
 623
 624 ##  --  >8  - <<OS/CC | SUPPORT FUNS>> -  8<  --  ##
 625
 626 ## Notes:
 627 ## - Heirloom sh(1) (and same origin) have _sometimes_ problems with ': >'
 628 ##   redirection, so use "printf '' >" instead
 629
 630 ## Very first: we undergo several states regarding I/O redirection etc.,
 631 ## but need to deal with option updates from within all.  Since all the
 632 ## option stuff should be above the scissor line, define utility functions
 633 ## and redefine them as necessary.
 634 ## And, since we have those functions, simply use them for whatever
 635
 636 t1=ten10one1ten10one1
 637 if ( [ ${t1##*ten10} = one1 ] && [ ${t1#*ten10} = one1ten10one1 ] &&
 638       [ ${t1%%one1*} = ten10 ] && [ ${t1%one1*} = ten10one1ten10 ]
 639       ) > /dev/null 2>&1; then
 640    good_shell=1
 641 else
 642    unset good_shell
 643 fi
 644 unset t1
 645
 646 ( set -o noglob ) >/dev/null 2>&1 && noglob_shell=1 || unset noglob_shell
 647
 648 config_exit() {
 649    exit ${1}
 650 }
 651
 652 # which(1) not standardized, command(1) -v may return non-executable: unroll!
 653 acmd_test() { __acmd "${1}" 1 0 0; }
 654 acmd_test_fail() { __acmd "${1}" 1 1 0; }
 655 acmd_set() { __acmd "${2}" 0 0 0 "${1}"; }
 656 acmd_set_fail() { __acmd "${2}" 0 1 0 "${1}"; }
 657 acmd_testandset() { __acmd "${2}" 1 0 0 "${1}"; }
 658 acmd_testandset_fail() { __acmd "${2}" 1 1 0 "${1}"; }
 659 thecmd_set() { __acmd "${2}" 0 0 1 "${1}"; }
 660 thecmd_set_fail() { __acmd "${2}" 0 1 1 "${1}"; }
 661 thecmd_testandset() { __acmd "${2}" 1 0 1 "${1}"; }
 662 thecmd_testandset_fail() { __acmd "${2}" 1 1 1 "${1}"; }
 663 __acmd() {
 664    pname=${1} dotest=${2} dofail=${3} verbok=${4} varname=${5}
 665
 666    if [ "${dotest}" -ne 0 ]; then
 667       eval dotest=\$${varname}
 668       if [ -n "${dotest}" ]; then
 669          [ -n "${VERBOSE}" ] && [ ${verbok} -ne 0 ] &&
 670             msg ' . ${%s} ... %s' "${pname}" "${dotest}"
 671          return 0
 672       fi
 673    fi
 674
 675    oifs=${IFS} IFS=:
 676    [ -n "${noglob_shell}" ] && set -o noglob
 677    set -- ${PATH}
 678    [ -n "${noglob_shell}" ] && set +o noglob
 679    IFS=${oifs}
 680    for path
 681    do
 682       if [ -z "${path}" ] || [ "${path}" = . ]; then
 683          if [ -d "${PWD}" ]; then
 684             path=${PWD}
 685          else
 686             path=.
 687          fi
 688       fi
 689       if [ -f "${path}/${pname}" ] && [ -x "${path}/${pname}" ]; then
 690          [ -n "${VERBOSE}" ] && [ ${verbok} -ne 0 ] &&
 691             msg ' . ${%s} ... %s' "${pname}" "${path}/${pname}"
 692          [ -n "${varname}" ] && eval ${varname}="${path}/${pname}"
 693          return 0
 694       fi
 695    done
 696
 697    # We may have no builtin string functions, we yet have no programs we can
 698    # use, try to access once from the root, assuming it is an absolute path if
 699    # that finds the executable
 700    if ( cd && [ -f "${pname}" ] && [ -x "${pname}" ] ); then
 701      [ -n "${VERBOSE}" ] && [ ${verbok} -ne 0 ] &&
 702             msg ' . ${%s} ... %s' "${pname}" "${pname}"
 703       [ -n "${varname}" ] && eval ${varname}="${pname}"
 704       return 0
 705    fi
 706
 707    [ ${dofail} -eq 0 ] && return 1
 708    msg 'ERROR: no trace of utility '"${pname}"
 709    exit 1
 710 }
 711
 712 msg() {
 713    fmt=${1}
 714    shift
 715    printf >&2 -- "${fmt}\\n" "${@}"
 716 }
 717
 718 msg_nonl() {
 719    fmt=${1}
 720    shift
 721    printf >&2 -- "${fmt}" "${@}"
 722 }
 723
 724 # Our feature check environment
 725 feat_val_no() {
 726    [ "x${1}" = x0 ] || [ "x${1}" = xn ] ||
 727    [ "x${1}" = xfalse ] || [ "x${1}" = xno ] || [ "x${1}" = xoff ]
 728 }
 729
 730 feat_val_yes() {
 731    [ "x${1}" = x1 ] || [ "x${1}" = xy ] ||
 732    [ "x${1}" = xtrue ] || [ "x${1}" = xyes ] || [ "x${1}" = xon ] ||
 733          [ "x${1}" = xrequire ]
 734 }
 735
 736 feat_val_require() {
 737    [ "x${1}" = xrequire ]
 738 }
 739
 740 _feat_check() {
 741    eval i=\$OPT_${1}
 742    i="`echo ${i} | ${tr} '[A-Z]' '[a-z]'`"
 743    if feat_val_no "${i}"; then
 744       return 1
 745    elif feat_val_yes "${i}"; then
 746       return 0
 747    else
 748       msg "ERROR: %s: 0/n/false/no/off or 1/y/true/yes/on/require, got: %s" \
 749          "${1}" "${i}"
 750       config_exit 11
 751    fi
 752 }
 753
 754 feat_yes() {
 755    _feat_check ${1}
 756 }
 757
 758 feat_no() {
 759    _feat_check ${1} && return 1
 760    return 0
 761 }
 762
 763 feat_require() {
 764    eval i=\$OPT_${1}
 765    i="`echo ${i} | ${tr} '[A-Z]' '[a-z]'`"
 766    [ "x${i}" = xrequire ] || [ "x${i}" = xrequired ]
 767 }
 768
 769 feat_bail_required() {
 770    if feat_require ${1}; then
 771       msg 'ERROR: feature OPT_%s is required but not available' "${1}"
 772       config_exit 13
 773    fi
 774    feat_is_unsupported "${1}"
 775 }
 776
 777 feat_is_disabled() {
 778    [ ${#} -eq 1 ] && msg ' .  (disabled: OPT_%s)' "${1}"
 779    echo "/* OPT_${1} -> HAVE_${1} */" >> ${h}
 780 }
 781
 782 feat_is_unsupported() {
 783    msg ' ! NOTICE: unsupported: OPT_%s' "${1}"
 784    echo "/* OPT_${1} -> HAVE_${1} */" >> ${h}
 785    eval OPT_${1}=0
 786    option_update # XXX this is rather useless here (dependency chain..)
 787 }
 788
 789 feat_def() {
 790    if feat_yes ${1}; then
 791       msg ' . %s ... yes' "${1}"
 792       echo '#define HAVE_'${1}'' >> ${h}
 793       return 0
 794    else
 795       feat_is_disabled "${@}"
 796       return 1
 797    fi
 798 }
 799
 800 option_parse() {
 801    # Parse one of our XOPTIONS* in $2 and assign the sh(1) compatible list of
 802    # options, without documentation, to $1
 803    j=\'
 804    i="`${awk} -v input=\"${2}\" '
 805       BEGIN{
 806          for(i = 0;;){
 807             voff = match(input, /[[:alnum:]_]+(='${j}'[^'${j}']+)?/)
 808             if(voff == 0)
 809                break
 810             v = substr(input, voff, RLENGTH)
 811             input = substr(input, voff + RLENGTH)
 812             doff = index(v, "=")
 813             if(doff > 0){
 814                d = substr(v, doff + 2, length(v) - doff - 1)
 815                v = substr(v, 1, doff - 1)
 816             }
 817             print v
 818          }
 819       }
 820       '`"
 821    eval ${1}=\"${i}\"
 822 }
 823
 824 option_doc_of() {
 825    # Return the "documentation string" for option $1, itself if none such
 826    j=\'
 827    ${awk} -v want="${1}" \
 828       -v input="${XOPTIONS_DETECT}${XOPTIONS}${XOPTIONS_XTRA}" '
 829    BEGIN{
 830       for(;;){
 831          voff = match(input, /[[:alnum:]_]+(='${j}'[^'${j}']+)?/)
 832          if(voff == 0)
 833             break
 834          v = substr(input, voff, RLENGTH)
 835          input = substr(input, voff + RLENGTH)
 836          doff = index(v, "=")
 837          if(doff > 0){
 838             d = substr(v, doff + 2, length(v) - doff - 1)
 839             v = substr(v, 1, doff - 1)
 840          }else
 841             d = v
 842          if(v == want){
 843             if(d != "-")
 844                print d
 845             exit
 846          }
 847       }
 848    }
 849    '
 850 }
 851
 852 option_join_rc() {
 853    # Join the values from make.rc into what currently is defined, not
 854    # overwriting yet existing settings
 855    ${rm} -f ${tmp}
 856    # We want read(1) to perform reverse solidus escaping in order to be able to
 857    # use multiline values in make.rc; the resulting sh(1)/sed(1) code was very
 858    # slow in VMs (see [fa2e248]), Aharon Robbins suggested the following
 859    < ${rc} ${awk} 'BEGIN{line = ""}{
 860       gsub(/^[[:space:]]+/, "", $0)
 861       gsub(/[[:space:]]+$/, "", $0)
 862       if(gsub(/\\$/, "", $0)){
 863          line = line $0
 864          next
 865       }else
 866          line = line $0
 867       if(index(line, "#") == 1){
 868          line = ""
 869       }else if(length(line)){
 870          print line
 871          line = ""
 872       }
 873    }' |
 874    while read line; do
 875       if [ -n "${good_shell}" ]; then
 876          i=${line%%=*}
 877       else
 878          i=`${awk} -v LINE="${line}" 'BEGIN{
 879             gsub(/=.*$/, "", LINE)
 880             print LINE
 881          }'`
 882       fi
 883       if [ "${i}" = "${line}" ]; then
 884          msg 'ERROR: invalid syntax in: %s' "${line}"
 885          continue
 886       fi
 887
 888       eval j="\$${i}" jx="\${${i}+x}"
 889       if [ -n "${j}" ] || [ "${jx}" = x ]; then
 890          : # Yet present
 891       else
 892          j=`${awk} -v LINE="${line}" 'BEGIN{
 893             gsub(/^[^=]*=/, "", LINE)
 894             gsub(/^\"*/, "", LINE)
 895             gsub(/\"*$/, "", LINE)
 896             print LINE
 897          }'`
 898       fi
 899       [ "${i}" = "DESTDIR" ] && continue
 900       echo "${i}=\"${j}\""
 901    done > ${tmp}
 902    # Reread the mixed version right now
 903    . ./${tmp}
 904 }
 905
 906 option_evaluate() {
 907    # Expand the option values, which may contain shell snippets
 908    ${rm} -f ${newlst} ${newmk} ${newh}
 909    exec 5<&0 6>&1 <${tmp} >${newlst}
 910    while read line; do
 911       z=
 912       if [ -n "${good_shell}" ]; then
 913          i=${line%%=*}
 914          [ "${i}" != "${i#OPT_}" ] && z=1
 915       else
 916          i=`${awk} -v LINE="${line}" 'BEGIN{
 917             gsub(/=.*$/, "", LINE);\
 918             print LINE
 919          }'`
 920          if echo "${i}" | ${grep} '^OPT_' >/dev/null 2>&1; then
 921             z=1
 922          fi
 923       fi
 924
 925       eval j=\$${i}
 926       if [ -n "${z}" ]; then
 927          j="`echo ${j} | ${tr} '[A-Z]' '[a-z]'`"
 928          if [ -z "${j}" ] || feat_val_no "${j}"; then
 929             j=0
 930             printf "   /* #undef ${i} */\n" >> ${newh}
 931          elif feat_val_yes "${j}"; then
 932             if feat_val_require "${j}"; then
 933                j=require
 934             else
 935                j=1
 936             fi
 937             printf "   /* #define ${i} */\n" >> ${newh}
 938          else
 939             msg 'ERROR: cannot parse <%s>' "${line}"
 940             config_exit 1
 941          fi
 942       elif { echo ${i} | ${grep} ${H_BLACKLIST} >/dev/null 2>&1; }; then
 943          :
 944       else
 945          printf "#define ${i} \"${j}\"\n" >> ${newh}
 946       fi
 947       printf "${i} = ${j}\n" >> ${newmk}
 948       printf "${i}=${j}\n"
 949       eval "${i}=\"${j}\""
 950    done
 951    exec 0<&5 1>&6 5<&- 6<&-
 952 }
 953
 954 val_allof() {
 955    eval __expo__=\$${1}
 956    ${awk} -v HEAP="${2}" -v USER="${__expo__}" '
 957       BEGIN{
 958          i = split(HEAP, ha, /[, ]/)
 959          if((j = split(USER, ua, /[, ]/)) == 0)
 960             exit
 961          for(; j != 0; --j){
 962             us = tolower(ua[j])
 963             if(us == "all" || us == "any")
 964                continue
 965             ok = 0
 966             for(ii = i; ii != 0; --ii)
 967                if(tolower(ha[ii]) == us){
 968                   ok = 1
 969                   break
 970                }
 971             if(!ok)
 972                exit 1
 973          }
 974       }
 975    '
 976    __rv__=${?}
 977    [ ${__rv__} -ne 0 ] && return ${__rv__}
 978
 979     if ${awk} -v USER="${__expo__}" '
 980             BEGIN{
 981                if((j = split(USER, ua, /[, ]/)) == 0)
 982                   exit
 983                for(; j != 0; --j){
 984                   us = tolower(ua[j])
 985                   if(us == "all" || us == "any")
 986                      exit 0
 987                }
 988                exit 1
 989             }
 990          '; then
 991       eval "${1}"=\"${2}\"
 992    else
 993       # Enfore lowercase also in otherwise unchanged user value..
 994       eval "${1}"=\""`echo ${__expo__} | ${tr} '[A-Z]_' '[a-z]-'`"\"
 995    fi
 996    return 0
 997 }
 998
 999 path_check() {
1000    # "path_check VARNAME" or "path_check VARNAME FLAG VARNAME"
1001    varname=${1} addflag=${2} flagvarname=${3}
1002    j=${IFS}
1003    IFS=:
1004    [ -n "${noglob_shell}" ] && set -o noglob
1005    eval "set -- \$${1}"
1006    [ -n "${noglob_shell}" ] && set +o noglob
1007    IFS=${j}
1008    j= k= y= z=
1009    for i
1010    do
1011       [ -z "${i}" ] && continue
1012       [ -d "${i}" ] || continue
1013       if [ -n "${j}" ]; then
1014          if { z=${y}; echo "${z}"; } | ${grep} ":${i}:" >/dev/null 2>&1; then
1015             :
1016          else
1017             y="${y} :${i}:"
1018             j="${j}:${i}"
1019             # But do not link any fakeroot path into our binaries!
1020             if [ -n "${addflag}" ]; then
1021                case "${i}" in *fakeroot*) continue;; esac
1022                k="${k} ${addflag}${i}"
1023             fi
1024          fi
1025       else
1026          y=" :${i}:"
1027          j="${i}"
1028          # But do not link any fakeroot path into our binaries!
1029          if [ -n "${addflag}" ]; then
1030             case "${i}" in *fakeroot*) continue;; esac
1031             k="${k} ${addflag}${i}"
1032          fi
1033       fi
1034    done
1035    eval "${varname}=\"${j}\""
1036    [ -n "${addflag}" ] && eval "${flagvarname}=\"${k}\""
1037    unset varname
1038 }
1039
1040 ld_runtime_flags() {
1041    if [ -n "${ld_need_R_flags}" ]; then
1042       i=${IFS}
1043       IFS=:
1044       set -- ${LD_LIBRARY_PATH}
1045       IFS=${i}
1046       for i
1047       do
1048          # But do not link any fakeroot path into our binaries!
1049          case "${i}" in *fakeroot*) continue;; esac
1050          LDFLAGS="${LDFLAGS} ${ld_need_R_flags}${i}"
1051          _LDFLAGS="${_LDFLAGS} ${ld_need_R_flags}${i}"
1052       done
1053       export LDFLAGS
1054    fi
1055    # Disable it for a possible second run.
1056    ld_need_R_flags=
1057 }
1058
1059 cc_check() {
1060    [ -n "${cc_check_silent}" ] || msg_nonl ' . CC %s .. ' "${1}"
1061    if ${CC} ${INCS} \
1062          ${_CFLAGS} ${1} ${EXTRA_CFLAGS} ${_LDFLAGS} ${EXTRA_LDFLAGS} \
1063          -o ${tmp2} ${tmp}.c ${LIBS} >/dev/null 2>&1; then
1064       _CFLAGS="${_CFLAGS} ${1}"
1065       [ -n "${cc_check_silent}" ] || msg 'yes'
1066       return 0
1067    fi
1068    [ -n "${cc_check_silent}" ] || msg 'no'
1069    return 1
1070 }
1071
1072 ld_check() {
1073    # $1=option [$2=option argument] [$3=if set, shall NOT be added to _LDFLAGS]
1074    [ -n "${cc_check_silent}" ] || msg_nonl ' . LD %s .. ' "${1}"
1075    if ${CC} ${INCS} ${_CFLAGS} ${_LDFLAGS} ${1}${2} ${EXTRA_LDFLAGS} \
1076          -o ${tmp2} ${tmp}.c ${LIBS} >/dev/null 2>&1; then
1077       [ -n "${3}" ] || _LDFLAGS="${_LDFLAGS} ${1}"
1078       [ -n "${cc_check_silent}" ] || msg 'yes'
1079       return 0
1080    fi
1081    [ -n "${cc_check_silent}" ] || msg 'no'
1082    return 1
1083 }
1084
1085 dump_test_program=1
1086 _check_preface() {
1087    variable=$1 topic=$2 define=$3
1088
1089    echo '**********'
1090    msg_nonl ' . %s ... ' "${topic}"
1091    #echo "/* checked ${topic} */" >> ${h}
1092    ${rm} -f ${tmp} ${tmp}.o
1093    if [ "${dump_test_program}" = 1 ]; then
1094       echo '*** test program is'
1095       { echo '#include <'"${h_name}"'>'; cat; } | ${tee} ${tmp}.c
1096    else
1097       { echo '#include <'"${h_name}"'>'; cat; } > ${tmp}.c
1098    fi
1099    #echo '*** the preprocessor generates'
1100    #${make} -f ${makefile} ${tmp}.x
1101    #${cat} ${tmp}.x
1102    echo '*** tests results'
1103 }
1104
1105 without_check() {
1106    yesno=$1 variable=$2 topic=$3 define=$4 libs=$5 incs=$6
1107
1108    echo '**********'
1109    msg_nonl ' . %s ... ' "${topic}"
1110
1111    echo '*** enforced unchecked results are'
1112    if feat_val_yes ${yesno}; then
1113       if [ -n "${incs}" ] || [ -n "${libs}" ]; then
1114          echo "*** adding INCS<${incs}> LIBS<${libs}>"
1115          LIBS="${LIBS} ${libs}"
1116          echo "${libs}" >> ${lib}
1117          INCS="${INCS} ${incs}"
1118          echo "${incs}" >> ${inc}
1119       fi
1120       msg 'yes (deduced)'
1121       echo "${define}" >> ${h}
1122       eval have_${variable}=yes
1123       return 0
1124    else
1125       #echo "/* ${define} */" >> ${h}
1126       msg 'no (deduced)'
1127       eval unset have_${variable}
1128       return 1
1129    fi
1130 }
1131
1132 compile_check() {
1133    variable=$1 topic=$2 define=$3
1134
1135    _check_preface "${variable}" "${topic}" "${define}"
1136
1137    if ${make} -f ${makefile} XINCS="${INCS}" \
1138             CFLAGS="${CFLAGS}" LDFLAGS="${LDFLAGS}" ${tmp}.o &&
1139             [ -f ${tmp}.o ]; then
1140       msg 'yes'
1141       echo "${define}" >> ${h}
1142       eval have_${variable}=yes
1143       return 0
1144    else
1145       #echo "/* ${define} */" >> ${h}
1146       msg 'no'
1147       eval unset have_${variable}
1148       return 1
1149    fi
1150 }
1151
1152 _link_mayrun() {
1153    run=$1 variable=$2 topic=$3 define=$4 libs=$5 incs=$6
1154
1155    _check_preface "${variable}" "${topic}" "${define}"
1156
1157    if feat_yes CROSS_BUILD; then
1158       if [ ${run} = 1 ]; then
1159          run=0
1160       fi
1161    fi
1162
1163    if ${make} -f ${makefile} XINCS="${INCS} ${incs}" \
1164             CFLAGS="${CFLAGS}" LDFLAGS="${LDFLAGS}" \
1165             XLIBS="${LIBS} ${libs}" ${tmp} &&
1166          [ -f ${tmp} ] && { [ ${run} -eq 0 ] || ${tmp}; }; then
1167       echo "*** adding INCS<${incs}> LIBS<${libs}>; executed: ${run}"
1168       msg 'yes'
1169       echo "${define}" >> ${h}
1170       LIBS="${LIBS} ${libs}"
1171       echo "${libs}" >> ${lib}
1172       INCS="${INCS} ${incs}"
1173       echo "${incs}" >> ${inc}
1174       eval have_${variable}=yes
1175       return 0
1176    else
1177       msg 'no'
1178       #echo "/* ${define} */" >> ${h}
1179       eval unset have_${variable}
1180       return 1
1181    fi
1182 }
1183
1184 link_check() {
1185    _link_mayrun 0 "${1}" "${2}" "${3}" "${4}" "${5}"
1186 }
1187
1188 run_check() {
1189    _link_mayrun 1 "${1}" "${2}" "${3}" "${4}" "${5}"
1190 }
1191
1192 xrun_check() {
1193    _link_mayrun 2 "${1}" "${2}" "${3}" "${4}" "${5}"
1194 }
1195
1196 squeeze_em() {
1197    < "${1}" > "${2}" ${awk} \
1198    'BEGIN {ORS = " "} /^[^#]/ {print} {next} END {ORS = ""; print "\n"}'
1199 }
1200
1201 ##  --  >8  - <<SUPPORT FUNS | RUNNING>> -  8<  --  ##
1202
1203 # First of all, create new configuration and check whether it changed
1204
1205 if [ -d .obj ] || mkdir .obj; then :; else
1206    msg 'ERROR: cannot create .obj build directory'
1207    exit 1
1208 fi
1209
1210 # Very easy checks for the operating system in order to be able to adjust paths
1211 # or similar very basic things which we need to be able to go at all
1212 os_early_setup
1213
1214 # Check those tools right now that we need before including $rc
1215 msg 'Checking for basic utility set'
1216 thecmd_testandset_fail awk awk
1217 thecmd_testandset_fail rm rm
1218 thecmd_testandset_fail tr tr
1219
1220 # Lowercase this now in order to isolate all the remains from case matters
1221 OS=`echo ${OS} | ${tr} '[A-Z]' '[a-z]'`
1222 export OS
1223
1224 # Initialize the option set
1225 msg_nonl 'Setting up configuration options ... '
1226 option_setup
1227 msg 'done'
1228
1229 # Include $rc, but only take from it what wasn't overwritten by the user from
1230 # within the command line or from a chosen fixed CONFIG=
1231 # Note we leave alone the values
1232 trap "exit 1" HUP INT TERM
1233 trap "${rm} -f ${tmp}" EXIT
1234
1235 msg_nonl 'Joining in %s ... ' ${rc}
1236 option_join_rc
1237 msg 'done'
1238
1239 # We need to know about that now, in order to provide utility overwrites etc.
1240 os_setup
1241
1242 msg 'Checking for remaining set of utilities'
1243 thecmd_testandset_fail grep grep
1244
1245 # Before we step ahead with the other utilities perform a path cleanup first.
1246 path_check PATH
1247
1248 # awk(1) above
1249 thecmd_testandset_fail basename basename
1250 thecmd_testandset_fail cat cat
1251 thecmd_testandset_fail chmod chmod
1252 thecmd_testandset_fail cp cp
1253 thecmd_testandset_fail cmp cmp
1254 # grep(1) above
1255 thecmd_testandset_fail mkdir mkdir
1256 thecmd_testandset_fail mv mv
1257 # pwd(1) is needed - either for make-emerge.sh, or for ourselves
1258 [ -n "${CWDDIR}" ] || thecmd_testandset_fail pwd pwd
1259 # rm(1) above
1260 thecmd_testandset_fail sed sed
1261 thecmd_testandset_fail sort sort
1262 thecmd_testandset_fail tee tee
1263 __PATH=${PATH}
1264 thecmd_testandset chown chown ||
1265    PATH="/sbin:${PATH}" thecmd_set chown chown ||
1266    PATH="/usr/sbin:${PATH}" thecmd_set_fail chown chown
1267 PATH=${__PATH}
1268 thecmd_testandset_fail MAKE make
1269 make=${MAKE}
1270 export MAKE
1271 thecmd_testandset strip strip && HAVE_STRIP=1 || HAVE_STRIP=0
1272
1273 # For ./cc-test.sh only
1274 thecmd_testandset_fail cksum cksum
1275
1276 # Now that we have pwd(1), set our build paths unless make-emerge.sh has been
1277 # used; it would have created a makefile with the full paths, then
1278 [ -n "${CWDDIR}" ] || CWDDIR=`${pwd}`/
1279 [ -n "${SRCDIR}" ] || SRCDIR=${CWDDIR}
1280
1281 # Update OPT_ options now, in order to get possible inter-dependencies right
1282 option_update
1283
1284 # (No functions since some shells loose non-exported variables in traps)
1285 trap "trap \"\" HUP INT TERM; exit 1" HUP INT TERM
1286 trap "trap \"\" HUP INT TERM EXIT;\
1287    ${rm} -rf ${newlst} ${tmp0}.* ${tmp0}* \
1288       ${newmk} ${oldmk} ${newev} ${newh} ${oldh}" EXIT
1289
1290 # Our configuration options may at this point still contain shell snippets,
1291 # we need to evaluate them in order to get them expanded, and we need those
1292 # evaluated values not only in our new configuration file, but also at hand..
1293 msg_nonl 'Evaluating all configuration items ... '
1294 option_evaluate
1295 msg 'done'
1296
1297 #
1298 printf "#define VAL_UAGENT \"${VAL_SID}${VAL_MAILX}\"\n" >> ${newh}
1299 printf "VAL_UAGENT = ${VAL_SID}${VAL_MAILX}\n" >> ${newmk}
1300
1301 # The problem now is that the test should be able to run in the users linker
1302 # and path environment, so we need to place the test: rule first, before
1303 # injecting the relevant make variables.  Set up necessary environment
1304 if [ -z "${VERBOSE}" ]; then
1305    printf -- "ECHO_CC = @echo '  'CC \$(@);\n" >> ${newmk}
1306    printf -- "ECHO_LINK = @echo '  'LINK \$(@);\n" >> ${newmk}
1307    printf -- "ECHO_GEN = @echo '  'GEN \$(@);\n" >> ${newmk}
1308    printf -- "ECHO_TEST = @\n" >> ${newmk}
1309    printf -- "ECHO_CMD = @echo '  CMD';\n" >> ${newmk}
1310    printf -- "ECHO_BLOCK_BEGIN = @( \n" >> ${newmk}
1311    printf -- "ECHO_BLOCK_END = ) >/dev/null\n" >> ${newmk}
1312 fi
1313 printf 'test: all\n\t$(ECHO_TEST)%s %scc-test.sh --check-only %s\n' \
1314    "${SHELL}" "${SRCDIR}" "./${VAL_SID}${VAL_MAILX}" >> ${newmk}
1315 printf 'citest: all\n\t$(ECHO_TEST)%s %scc-test.sh --ci-test %s\n' \
1316    "${SHELL}" "${SRCDIR}" "./${VAL_SID}${VAL_MAILX}" >> ${newmk}
1317
1318 # Add the known utility and some other variables
1319 printf "#define VAL_PRIVSEP \"${VAL_SID}${VAL_MAILX}-privsep\"\n" >> ${newh}
1320 printf "VAL_PRIVSEP = \$(VAL_UAGENT)-privsep\n" >> ${newmk}
1321 if feat_yes DOTLOCK; then
1322    printf "OPTIONAL_PRIVSEP = \$(VAL_PRIVSEP)\n" >> ${newmk}
1323 else
1324    printf "OPTIONAL_PRIVSEP =\n" >> ${newmk}
1325 fi
1326
1327 for i in \
1328    CWDDIR SRCDIR \
1329       awk basename cat chmod chown cp cmp grep mkdir mv rm sed sort tee tr \
1330       MAKE MAKEFLAGS make SHELL strip \
1331       cksum; do
1332    eval j=\$${i}
1333    printf -- "${i} = ${j}\n" >> ${newmk}
1334    printf -- "${i}=${j}\n" >> ${newlst}
1335    printf -- "${i}=\"${j}\";export ${i}; " >> ${newev}
1336 done
1337 # Note that makefile reads and eval'uates one line of this file, whereas other
1338 # consumers source it via .(1)
1339 printf "\n" >> ${newev}
1340
1341 # Build a basic set of INCS and LIBS according to user environment.
1342 C_INCLUDE_PATH="${CWDDIR}:${CWDDIR}.obj:${SRCDIR}:${C_INCLUDE_PATH}"
1343 path_check C_INCLUDE_PATH -I _INCS
1344 INCS="${INCS} ${_INCS}"
1345 path_check LD_LIBRARY_PATH -L _LIBS
1346 LIBS="${LIBS} ${_LIBS}"
1347 unset _INCS _LIBS
1348 export C_INCLUDE_PATH LD_LIBRARY_PATH
1349
1350 # Some environments need runtime path flags to be able to go at all
1351 ld_runtime_flags
1352
1353 ## Detect CC, whether we can use it, and possibly which CFLAGS we can use
1354
1355 cc_setup
1356
1357 ${cat} > ${tmp}.c << \!
1358 #include <stdio.h>
1359 #include <string.h>
1360 static void doit(char const *s);
1361 int
1362 main(int argc, char **argv){
1363    (void)argc;
1364    (void)argv;
1365    doit("Hello world");
1366    return 0;
1367 }
1368 static void
1369 doit(char const *s){
1370    char buf[12];
1371    memcpy(buf, s, strlen(s) +1);
1372    puts(s);
1373 }
1374 !
1375
1376 if ${CC} ${INCS} ${CFLAGS} ${EXTRA_CFLAGS} ${LDFLAGS} ${EXTRA_LDFLAGS} \
1377       -o ${tmp2} ${tmp}.c ${LIBS}; then
1378    :
1379 else
1380    msg 'ERROR: i cannot compile a "Hello world" via'
1381    msg '   %s' \
1382    "${CC} ${INCS} ${CFLAGS} ${EXTRA_CFLAGS} ${LDFLAGS} ${EXTRA_LDFLAGS} ${LIBS}"
1383    msg 'ERROR:   Please read INSTALL, rerun'
1384    config_exit 1
1385 fi
1386
1387 # This may also update ld_runtime_flags() (again)
1388 cc_flags
1389
1390 for i in \
1391       COMMLINE \
1392       INCS LIBS \
1393       ; do
1394    eval j="\$${i}"
1395    printf -- "${i}=${j}\n" >> ${newlst}
1396 done
1397 for i in \
1398       CC \
1399       CFLAGS \
1400       LDFLAGS \
1401       PATH C_INCLUDE_PATH LD_LIBRARY_PATH \
1402       OSFULLSPEC \
1403       ; do
1404    eval j=\$${i}
1405    if [ -n "${j}" ]; then
1406       printf -- "${i} = ${j}\n" >> ${newmk}
1407       printf -- "${i}=${j}\n" >> ${newlst}
1408    fi
1409 done
1410
1411 # Now finally check whether we already have a configuration and if so, whether
1412 # all those parameters are still the same.. or something has actually changed
1413 config_updated=
1414 if [ -f ${lst} ] && ${cmp} ${newlst} ${lst} >/dev/null 2>&1; then
1415    echo 'Configuration is up-to-date'
1416    exit 0
1417 elif [ -f ${lst} ]; then
1418    config_updated=1
1419    echo 'Configuration has been updated..'
1420 else
1421    echo 'Shiny configuration..'
1422 fi
1423
1424 # Time to redefine helper 1
1425 config_exit() {
1426    ${rm} -f ${lst} ${h} ${mk}
1427    exit ${1}
1428 }
1429
1430 ${mv} -f ${newlst} ${lst}
1431 ${mv} -f ${newev} ${ev}
1432 [ -f ${h} ] && ${mv} -f ${h} ${oldh}
1433 ${mv} -f ${newh} ${h}
1434 [ -f ${mk} ] && ${mv} -f ${mk} ${oldmk}
1435 ${mv} -f ${newmk} ${mk}
1436
1437 ## Compile and link checking
1438
1439 tmp3=${tmp0}3$$
1440 log=.obj/mk-config.log
1441 lib=.obj/mk-config.lib
1442 inc=.obj/mk-config.inc
1443 makefile=${tmp0}.mk
1444
1445 # (No function since some shells loose non-exported variables in traps)
1446 trap "trap \"\" HUP INT TERM;\
1447    ${rm} -f ${lst} ${oldh} ${h} ${oldmk} ${mk} ${lib} ${inc}; exit 1" \
1448       HUP INT TERM
1449 trap "trap \"\" HUP INT TERM EXIT;\
1450    ${rm} -rf ${oldh} ${oldmk} ${tmp0}.* ${tmp0}*" EXIT
1451
1452 # Time to redefine helper 2
1453 msg() {
1454    fmt=${1}
1455    shift
1456    printf "*** ${fmt}\\n" "${@}"
1457    printf -- "${fmt}\\n" "${@}" >&5
1458 }
1459 msg_nonl() {
1460    fmt=${1}
1461    shift
1462    printf "*** ${fmt}\\n" "${@}"
1463    printf -- "${fmt}" "${@}" >&5
1464 }
1465
1466 # !!
1467 exec 5>&2 > ${log} 2>&1
1468
1469 echo "${LIBS}" > ${lib}
1470 echo "${INCS}" > ${inc}
1471 ${cat} > ${makefile} << \!
1472 .SUFFIXES: .o .c .x .y
1473 .c.o:
1474         $(CC) -I./ $(XINCS) $(CFLAGS) -o $(@) -c $(<)
1475 .c.x:
1476         $(CC) -I./ $(XINCS) -E $(<) > $(@)
1477 .c:
1478         $(CC) -I./ $(XINCS) $(CFLAGS) $(LDFLAGS) -o $(@) $(<) $(XLIBS)
1479 !
1480
1481 ## Generics
1482
1483 # May be multiline..
1484 echo >> ${h}
1485 [ -n "${OS_DEFINES}" ] && printf -- "${OS_DEFINES}" >> ${h}
1486 echo '#define VAL_BUILD_OS "'"${OS}"'"' >> ${h}
1487
1488 # Generate n_err_number OS mappings
1489 dump_test_program=0
1490 (
1491    feat_yes DEVEL && NV= || NV=noverbose
1492    SRCDIR="${SRCDIR}" TARGET="${h}" awk="${awk}" \
1493       ${SHELL} "${SRCDIR}"make-errors.sh ${NV} config
1494 ) | xrun_check oserrno 'OS error mapping table generated' || config_exit 1
1495 dump_test_program=1
1496
1497 feat_def ALWAYS_UNICODE_LOCALE
1498 feat_def AMALGAMATION 0
1499 feat_def CROSS_BUILD
1500 feat_def DOCSTRINGS
1501 feat_def MAILDIR
1502 feat_def UISTRINGS
1503 feat_def ERRORS
1504
1505 feat_def ASAN_ADDRESS 0
1506 feat_def ASAN_MEMORY 0
1507 feat_def DEBUG 0
1508 feat_def DEVEL 0
1509 feat_def NYD2 0
1510 feat_def NOMEMDBG 0
1511
1512 if xrun_check inline 'inline functions' \
1513    '#define HAVE_INLINE
1514    #define n_INLINE static inline' << \!
1515 static inline int ilf(int i){return ++i;}
1516 int main(void){return ilf(-1);}
1517 !
1518 then
1519    :
1520 elif xrun_check inline 'inline functions (via __inline)' \
1521    '#define HAVE_INLINE
1522    #define n_INLINE static __inline' << \!
1523 static __inline int ilf(int i){return ++i;}
1524 int main(void){return ilf(-1);}
1525 !
1526 then
1527    :
1528 fi
1529
1530 ## Test for "basic" system-calls / functionality that is used by all parts
1531 ## of our program.  Once this is done fork away BASE_LIBS and other BASE_*
1532 ## macros to be used by only the subprograms (potentially).
1533
1534 if run_check clock_gettime 'clock_gettime(2)' \
1535    '#define HAVE_CLOCK_GETTIME' << \!
1536 #include <time.h>
1537 # include <errno.h>
1538 int main(void){
1539    struct timespec ts;
1540
1541    if(!clock_gettime(CLOCK_REALTIME, &ts) || errno != ENOSYS)
1542       return 0;
1543    return 1;
1544 }
1545 !
1546 then
1547    :
1548 elif run_check clock_gettime 'clock_gettime(2) (via -lrt)' \
1549    '#define HAVE_CLOCK_GETTIME' '-lrt' << \!
1550 #include <time.h>
1551 # include <errno.h>
1552 int main(void){
1553    struct timespec ts;
1554
1555    if(!clock_gettime(CLOCK_REALTIME, &ts) || errno != ENOSYS)
1556       return 0;
1557    return 1;
1558 }
1559 !
1560 then
1561    :
1562 elif run_check gettimeofday 'gettimeofday(2)' \
1563    '#define HAVE_GETTIMEOFDAY' << \!
1564 #include <stdio.h> /* For C89 NULL */
1565 #include <sys/time.h>
1566 # include <errno.h>
1567 int main(void){
1568    struct timeval tv;
1569
1570    if(!gettimeofday(&tv, NULL) || errno != ENOSYS)
1571       return 0;
1572    return 1;
1573 }
1574 !
1575 then
1576    :
1577 else
1578    have_no_subsecond_time=1
1579 fi
1580
1581 if run_check nanosleep 'nanosleep(2)' \
1582    '#define HAVE_NANOSLEEP' << \!
1583 #include <time.h>
1584 # include <errno.h>
1585 int main(void){
1586    struct timespec ts;
1587
1588    ts.tv_sec = 1;
1589    ts.tv_nsec = 100000;
1590    if(!nanosleep(&ts, NULL) || errno != ENOSYS)
1591       return 0;
1592    return 1;
1593 }
1594 !
1595 then
1596    :
1597 elif run_check nanosleep 'nanosleep(2) (via -lrt)' \
1598    '#define HAVE_NANOSLEEP' '-lrt' << \!
1599 #include <time.h>
1600 # include <errno.h>
1601 int main(void){
1602    struct timespec ts;
1603
1604    ts.tv_sec = 1;
1605    ts.tv_nsec = 100000;
1606    if(!nanosleep(&ts, NULL) || errno != ENOSYS)
1607       return 0;
1608    return 1;
1609 }
1610 !
1611 then
1612    :
1613 # link_check is enough for this, that function is so old, trust the proto
1614 elif link_check sleep 'sleep(3)' \
1615    '#define HAVE_SLEEP' << \!
1616 #include <unistd.h>
1617 # include <errno.h>
1618 int main(void){
1619    if(!sleep(1) || errno != ENOSYS)
1620       return 0;
1621    return 1;
1622 }
1623 !
1624 then
1625    :
1626 else
1627    msg 'ERROR: we require one of nanosleep(2) and sleep(3).'
1628    config_exit 1
1629 fi
1630
1631 if run_check userdb 'gete?[gu]id(2), getpwuid(3), getpwnam(3)' << \!
1632 #include <pwd.h>
1633 #include <unistd.h>
1634 # include <errno.h>
1635 int main(void){
1636    struct passwd *pw;
1637    gid_t gid;
1638    uid_t uid;
1639
1640    if((gid = getgid()) != 0)
1641       gid = getegid();
1642    if((uid = getuid()) != 0)
1643       uid = geteuid();
1644    if((pw = getpwuid(uid)) == NULL && errno == ENOSYS)
1645       return 1;
1646    if((pw = getpwnam("root")) == NULL && errno == ENOSYS)
1647       return 1;
1648    return 0;
1649 }
1650 !
1651 then
1652    :
1653 else
1654    msg 'ERROR: we require user and group info / database searches.'
1655    msg 'That much Unix we indulge ourselfs.'
1656    config_exit 1
1657 fi
1658
1659 if link_check ftruncate 'ftruncate(2)' \
1660    '#define HAVE_FTRUNCATE' << \!
1661 #include <unistd.h>
1662 #include <sys/types.h>
1663 int main(void){
1664    return (ftruncate(0, 0) != 0);
1665 }
1666 !
1667 then
1668    :
1669 else
1670    # TODO support HAVE_FTRUNCATE *everywhere*, do not require this syscall!
1671    msg 'ERROR: we require the ftruncate(2) system call.'
1672    config_exit 1
1673 fi
1674
1675 if run_check sa_restart 'SA_RESTART (for sigaction(2))' << \!
1676 #include <signal.h>
1677 # include <errno.h>
1678 int main(void){
1679    struct sigaction nact, oact;
1680
1681    nact.sa_handler = SIG_DFL;
1682    sigemptyset(&nact.sa_mask);
1683    nact.sa_flags = SA_RESTART;
1684    return !(!sigaction(SIGCHLD, &nact, &oact) || errno != ENOSYS);
1685 }
1686 !
1687 then
1688    :
1689 else
1690    msg 'ERROR: we (yet) require the SA_RESTART flag for sigaction(2).'
1691    config_exit 1
1692 fi
1693
1694 if link_check snprintf 'snprintf(3)' << \!
1695 #include <stdio.h>
1696 int main(void){
1697    char b[20];
1698
1699    snprintf(b, sizeof b, "%s", "string");
1700    return 0;
1701 }
1702 !
1703 then
1704    :
1705 else
1706    msg 'ERROR: we require the snprintf(3) function.'
1707    config_exit 1
1708 fi
1709
1710 if link_check environ 'environ(3)' << \!
1711 #include <stdio.h> /* For C89 NULL */
1712 int main(void){
1713    extern char **environ;
1714
1715    return environ[0] == NULL;
1716 }
1717 !
1718 then
1719    :
1720 else
1721    msg 'ERROR: we require the environ(3) array for subprocess control.'
1722    config_exit 1
1723 fi
1724
1725 if link_check setenv '(un)?setenv(3)' '#define HAVE_SETENV' << \!
1726 #include <stdlib.h>
1727 int main(void){
1728    setenv("s-mailx", "i want to see it cute!", 1);
1729    unsetenv("s-mailx");
1730    return 0;
1731 }
1732 !
1733 then
1734    :
1735 elif link_check setenv 'putenv(3)' '#define HAVE_PUTENV' << \!
1736 #include <stdlib.h>
1737 int main(void){
1738    putenv("s-mailx=i want to see it cute!");
1739    return 0;
1740 }
1741 !
1742 then
1743    :
1744 else
1745    msg 'ERROR: we require either the setenv(3) or putenv(3) functions.'
1746    config_exit 1
1747 fi
1748
1749 if link_check termios 'termios.h and tc*(3) family' << \!
1750 #include <termios.h>
1751 int main(void){
1752    struct termios tios;
1753
1754    tcgetattr(0, &tios);
1755    tcsetattr(0, TCSANOW | TCSADRAIN | TCSAFLUSH, &tios);
1756    return 0;
1757 }
1758 !
1759 then
1760    :
1761 else
1762    msg 'ERROR: we require termios.h and the tc[gs]etattr() family of functions.'
1763    msg 'That much Unix we indulge ourselfs.'
1764    config_exit 1
1765 fi
1766
1767 ## optional stuff
1768
1769 if link_check vsnprintf 'vsnprintf(3)' << \!
1770 #include <stdarg.h>
1771 #include <stdio.h>
1772 static void dome(char *buf, size_t blen, ...){
1773    va_list ap;
1774
1775    va_start(ap, blen);
1776    vsnprintf(buf, blen, "%s", ap);
1777    va_end(ap);
1778 }
1779 int main(void){
1780    char b[20];
1781
1782    dome(b, sizeof b, "string");
1783    return 0;
1784 }
1785 !
1786 then
1787    :
1788 else
1789    feat_bail_required ERRORS
1790 fi
1791
1792 if [ "${have_vsnprintf}" = yes ]; then
1793    __va_copy() {
1794       link_check va_copy "va_copy(3) (as ${2})" \
1795          "#define HAVE_N_VA_COPY
1796 #define n_va_copy ${2}" <<_EOT
1797 #include <stdarg.h>
1798 #include <stdio.h>
1799 #if ${1}
1800 # if defined __va_copy && !defined va_copy
1801 #  define va_copy __va_copy
1802 # endif
1803 #endif
1804 static void dome2(char *buf, size_t blen, va_list src){
1805    va_list ap;
1806
1807    va_copy(ap, src);
1808    vsnprintf(buf, blen, "%s", ap);
1809    va_end(ap);
1810 }
1811 static void dome(char *buf, size_t blen, ...){
1812    va_list ap;
1813
1814    va_start(ap, blen);
1815    dome2(buf, blen, ap);
1816    va_end(ap);
1817 }
1818 int main(void){
1819    char b[20];
1820
1821    dome(b, sizeof b, "string");
1822    return 0;
1823 }
1824 _EOT
1825    }
1826    __va_copy 0 va_copy || __va_copy 1 __va_copy
1827 fi
1828
1829 run_check pathconf 'f?pathconf(2)' '#define HAVE_PATHCONF' << \!
1830 #include <unistd.h>
1831 #include <errno.h>
1832 int main(void){
1833    int rv = 0;
1834
1835    errno = 0;
1836    rv |= !(pathconf(".", _PC_NAME_MAX) >= 0 || errno == 0 || errno != ENOSYS);
1837    errno = 0;
1838    rv |= !(pathconf(".", _PC_PATH_MAX) >= 0 || errno == 0 || errno != ENOSYS);
1839
1840    /* Only link check */
1841    fpathconf(0, _PC_NAME_MAX);
1842
1843    return rv;
1844 }
1845 !
1846
1847 run_check pipe2 'pipe2(2)' '#define HAVE_PIPE2' << \!
1848 #include <fcntl.h>
1849 #include <unistd.h>
1850 # include <errno.h>
1851 int main(void){
1852    int fds[2];
1853
1854    if(!pipe2(fds, O_CLOEXEC) || errno != ENOSYS)
1855       return 0;
1856    return 1;
1857 }
1858 !
1859
1860 link_check tcgetwinsize 'tcgetwinsize(3)' '#define HAVE_TCGETWINSIZE' << \!
1861 #include <termios.h>
1862 int main(void){
1863    struct winsize ws;
1864
1865    tcgetwinsize(0, &ws);
1866    return 0;
1867 }
1868 !
1869
1870 # We use this only then for now (need NOW+1)
1871 run_check utimensat 'utimensat(2)' '#define HAVE_UTIMENSAT' << \!
1872 #include <fcntl.h> /* For AT_* */
1873 #include <sys/stat.h>
1874 # include <errno.h>
1875 int main(void){
1876    struct timespec ts[2];
1877
1878    ts[0].tv_nsec = UTIME_NOW;
1879    ts[1].tv_nsec = UTIME_OMIT;
1880    if(!utimensat(AT_FDCWD, "", ts, 0) || errno != ENOSYS)
1881       return 0;
1882    return 1;
1883 }
1884 !
1885
1886 ##
1887
1888 # The random check has been moved to below TLS detection due to multiple choice
1889 # selection for PRG sources
1890
1891 link_check putc_unlocked 'putc_unlocked(3)' '#define HAVE_PUTC_UNLOCKED' <<\!
1892 #include <stdio.h>
1893 int main(void){
1894    putc_unlocked('@', stdout);
1895    return 0;
1896 }
1897 !
1898
1899 link_check fchdir 'fchdir(3)' '#define HAVE_FCHDIR' << \!
1900 #include <unistd.h>
1901 int main(void){
1902    fchdir(0);
1903    return 0;
1904 }
1905 !
1906
1907 if link_check realpath 'realpath(3)' '#define HAVE_REALPATH' << \!
1908 #include <stdlib.h>
1909 int main(void){
1910    char x_buf[4096], *x = realpath(".", x_buf);
1911
1912    return (x != NULL) ? 0 : 1;
1913 }
1914 !
1915 then
1916    if run_check realpath_malloc 'realpath(3) takes NULL' \
1917          '#define HAVE_REALPATH_NULL' << \!
1918 #include <stdlib.h>
1919 int main(void){
1920    char *x = realpath(".", NULL);
1921
1922    if(x != NULL)
1923       free(x);
1924    return (x != NULL) ? 0 : 1;
1925 }
1926 !
1927    then
1928       :
1929    fi
1930 fi
1931
1932 ##
1933 ## optional and selectable
1934 ##
1935
1936 if feat_yes DOTLOCK; then
1937    if run_check readlink 'readlink(2)' << \!
1938 #include <unistd.h>
1939 # include <errno.h>
1940 int main(void){
1941    char buf[128];
1942
1943    if(!readlink("here", buf, sizeof buf) || errno != ENOSYS)
1944       return 0;
1945    return 1;
1946 }
1947 !
1948    then
1949       :
1950    else
1951       feat_bail_required DOTLOCK
1952    fi
1953 fi
1954
1955 if feat_yes DOTLOCK; then
1956    if run_check fchown 'fchown(2)' << \!
1957 #include <unistd.h>
1958 # include <errno.h>
1959 int main(void){
1960    if(!fchown(0, 0, 0) || errno != ENOSYS)
1961       return 0;
1962    return 1;
1963 }
1964 !
1965    then
1966       :
1967    else
1968       feat_bail_required DOTLOCK
1969    fi
1970 fi
1971
1972 if feat_yes DOTLOCK; then
1973    if run_check prctl_dumpable 'prctl(2) + PR_SET_DUMPABLE' \
1974          '#define HAVE_PRCTL_DUMPABLE' << \!
1975 #include <sys/prctl.h>
1976 # include <errno.h>
1977 int main(void){
1978    if(!prctl(PR_SET_DUMPABLE, 0) || errno != ENOSYS)
1979       return 0;
1980    return 1;
1981 }
1982 !
1983    then
1984       :
1985    elif run_check prtrace_deny 'ptrace(2) + PT_DENY_ATTACH' \
1986          '#define HAVE_PTRACE_DENY' << \!
1987 #include <sys/ptrace.h>
1988 # include <errno.h>
1989 int main(void){
1990    if(ptrace(PT_DENY_ATTACH, 0, 0, 0) != -1 || errno != ENOSYS)
1991       return 0;
1992    return 1;
1993 }
1994 !
1995    then
1996       :
1997    elif run_check setpflags_protect 'setpflags(2) + __PROC_PROTECT' \
1998          '#define HAVE_SETPFLAGS_PROTECT' << \!
1999 #include <priv.h>
2000 # include <errno.h>
2001 int main(void){
2002    if(!setpflags(__PROC_PROTECT, 1) || errno != ENOSYS)
2003       return 0;
2004    return 1;
2005 }
2006 !
2007    then
2008       :
2009    fi
2010 fi
2011
2012 ## Now it is the time to fork away the BASE_ series
2013
2014 ${rm} -f ${tmp}
2015 squeeze_em ${inc} ${tmp}
2016 ${mv} ${tmp} ${inc}
2017 squeeze_em ${lib} ${tmp}
2018 ${mv} ${tmp} ${lib}
2019
2020 echo "BASE_LIBS = `${cat} ${lib}`" >> ${mk}
2021 echo "BASE_INCS = `${cat} ${inc}`" >> ${mk}
2022
2023 ## The remains are expected to be used only by the main MUA binary!
2024
2025 OPT_LOCALES=0
2026 link_check setlocale 'setlocale(3)' '#define HAVE_SETLOCALE' << \!
2027 #include <locale.h>
2028 int main(void){
2029    setlocale(LC_ALL, "");
2030    return 0;
2031 }
2032 !
2033 [ -n "${have_setlocale}" ] && OPT_LOCALES=1
2034
2035 OPT_MULTIBYTE_CHARSETS=0
2036 OPT_WIDE_GLYPHS=0
2037 OPT_TERMINAL_CHARSET=0
2038 if [ -n "${have_setlocale}" ]; then
2039    link_check c90amend1 'ISO/IEC 9899:1990/Amendment 1:1995' \
2040       '#define HAVE_C90AMEND1' << \!
2041 #include <limits.h>
2042 #include <stdlib.h>
2043 #include <wchar.h>
2044 #include <wctype.h>
2045 int main(void){
2046    char mbb[MB_LEN_MAX + 1];
2047    wchar_t wc;
2048
2049    iswprint(L'c');
2050    towupper(L'c');
2051    mbtowc(&wc, "x", 1);
2052    mbrtowc(&wc, "x", 1, NULL);
2053    wctomb(mbb, wc);
2054    return (mblen("\0", 1) == 0);
2055 }
2056 !
2057    [ -n "${have_c90amend1}" ] && OPT_MULTIBYTE_CHARSETS=1
2058
2059    if [ -n "${have_c90amend1}" ]; then
2060       link_check wcwidth 'wcwidth(3)' '#define HAVE_WCWIDTH' << \!
2061 #include <wchar.h>
2062 int main(void){
2063    wcwidth(L'c');
2064    return 0;
2065 }
2066 !
2067       [ -n "${have_wcwidth}" ] && OPT_WIDE_GLYPHS=1
2068    fi
2069
2070    link_check nl_langinfo 'nl_langinfo(3)' '#define HAVE_NL_LANGINFO' << \!
2071 #include <langinfo.h>
2072 #include <stdlib.h>
2073 int main(void){
2074    nl_langinfo(DAY_1);
2075    return (nl_langinfo(CODESET) == NULL);
2076 }
2077 !
2078    [ -n "${have_nl_langinfo}" ] && OPT_TERMINAL_CHARSET=1
2079 fi # have_setlocale
2080
2081 link_check fnmatch 'fnmatch(3)' '#define HAVE_FNMATCH' << \!
2082 #include <fnmatch.h>
2083 int main(void){
2084    return (fnmatch("*", ".", FNM_PATHNAME | FNM_PERIOD) == FNM_NOMATCH);
2085 }
2086 !
2087
2088 link_check dirent_d_type 'struct dirent.d_type' '#define HAVE_DIRENT_TYPE' << \!
2089 #include <dirent.h>
2090 int main(void){
2091    struct dirent de;
2092    return !(de.d_type == DT_UNKNOWN ||
2093       de.d_type == DT_DIR || de.d_type == DT_LNK);
2094 }
2095 !
2096
2097 ## optional and selectable
2098
2099 if feat_yes ICONV; then
2100    # To be able to create tests we need to figure out which replacement
2101    # sequence the iconv(3) implementation creates
2102    ${cat} > ${tmp2}.c << \!
2103 #include <stdio.h> /* For C89 NULL */
2104 #include <string.h>
2105 #include <iconv.h>
2106 int main(void){
2107    char inb[16], oub[16], *inbp, *oubp;
2108    iconv_t id;
2109    size_t inl, oul;
2110
2111    memcpy(inbp = inb, "\342\200\223", sizeof("\342\200\223"));
2112    inl = sizeof("\342\200\223") -1;
2113    oul = sizeof oub;
2114    oubp = oub;
2115
2116    if((id = iconv_open("ascii", "utf-8")) == (iconv_t)-1)
2117      return 1;
2118    if(iconv(id, &inbp, &inl, &oubp, &oul) == (size_t)-1)
2119       return 1;
2120    iconv_close(id);
2121
2122    *oubp = '\0';
2123    oul = (size_t)(oubp - oub);
2124    if(oul == 0)
2125       return 1;
2126    /* Character-wise replacement? */
2127    if(oul == 1){
2128       if(oub[0] == '?')
2129          return 2;
2130       if(oub[0] == '*')
2131          return 3;
2132       return 1;
2133    }
2134    /* Byte-wise replacement? */
2135    if(oul == sizeof("\342\200\223") -1){
2136       if(!memcmp(oub, "???????", sizeof("\342\200\223") -1))
2137          return 12;
2138       if(!memcmp(oub, "*******", sizeof("\342\200\223") -1))
2139          return 13;
2140       return 1;
2141    }
2142    return 0;
2143 }
2144 !
2145    < ${tmp2}.c link_check iconv 'iconv(3) functionality' \
2146          '#define HAVE_ICONV' ||
2147       < ${tmp2}.c link_check iconv 'iconv(3) functionality (via -liconv)' \
2148          '#define HAVE_ICONV' '-liconv' ||
2149       feat_bail_required ICONV
2150
2151    if feat_no CROSS_BUILD; then
2152       { ${tmp}; } >/dev/null 2>&1
2153       case ${?} in
2154       2) echo 'MAILX_ICONV_MODE=2;export MAILX_ICONV_MODE;' >> ${ev};;
2155       3) echo 'MAILX_ICONV_MODE=3;export MAILX_ICONV_MODE;' >> ${ev};;
2156       12) echo 'MAILX_ICONV_MODE=12;export MAILX_ICONV_MODE;' >> ${ev};;
2157       13) echo 'MAILX_ICONV_MODE=13;export MAILX_ICONV_MODE;' >> ${ev};;
2158       *) msg 'WARN: will restrict iconv(3) tests due to unknown replacement';;
2159       esac
2160    fi
2161 else
2162    feat_is_disabled ICONV
2163 fi # feat_yes ICONV
2164
2165 if feat_yes SOCKETS || feat_yes SPAM_SPAMD; then
2166    ${cat} > ${tmp2}.c << \!
2167 #include <sys/types.h>
2168 #include <sys/socket.h>
2169 #include <sys/un.h>
2170 # include <errno.h>
2171 int main(void){
2172    struct sockaddr_un soun;
2173
2174    if(socket(AF_UNIX, SOCK_STREAM, 0) == -1 && errno == ENOSYS)
2175       return 1;
2176    if(connect(0, (struct sockaddr*)&soun, 0) == -1 && errno == ENOSYS)
2177       return 1;
2178    if(shutdown(0, SHUT_RD | SHUT_WR | SHUT_RDWR) == -1 && errno == ENOSYS)
2179       return 1;
2180    return 0;
2181 }
2182 !
2183
2184    < ${tmp2}.c run_check af_unix 'AF_UNIX sockets' \
2185          '#define HAVE_UNIX_SOCKETS' ||
2186       < ${tmp2}.c run_check af_unix 'AF_UNIX sockets (via -lnsl)' \
2187          '#define HAVE_UNIX_SOCKETS' '-lnsl' ||
2188       < ${tmp2}.c run_check af_unix 'AF_UNIX sockets (via -lsocket -lnsl)' \
2189          '#define HAVE_UNIX_SOCKETS' '-lsocket -lnsl'
2190 fi
2191
2192 if feat_yes SOCKETS; then
2193    ${cat} > ${tmp2}.c << \!
2194 #include <sys/types.h>
2195 #include <sys/socket.h>
2196 #include <netinet/in.h>
2197 # include <errno.h>
2198 int main(void){
2199    struct sockaddr s;
2200
2201    if(socket(AF_INET, SOCK_STREAM, 0) == -1 && errno == ENOSYS)
2202       return 1;
2203    if(connect(0, &s, 0) == -1 && errno == ENOSYS)
2204       return 1;
2205    return 0;
2206 }
2207 !
2208
2209    < ${tmp2}.c run_check sockets 'sockets' \
2210          '#define HAVE_SOCKETS' ||
2211       < ${tmp2}.c run_check sockets 'sockets (via -lnsl)' \
2212          '#define HAVE_SOCKETS' '-lnsl' ||
2213       < ${tmp2}.c run_check sockets 'sockets (via -lsocket -lnsl)' \
2214          '#define HAVE_SOCKETS' '-lsocket -lnsl' ||
2215       feat_bail_required SOCKETS
2216 else
2217    feat_is_disabled SOCKETS
2218 fi # feat_yes SOCKETS
2219
2220 feat_yes SOCKETS &&
2221    link_check sockopt '[gs]etsockopt(2)' '#define HAVE_SOCKOPT' << \!
2222 #include <sys/socket.h>
2223 #include <stdlib.h>
2224 # include <errno.h>
2225 int main(void){
2226    socklen_t sol;
2227    int sockfd = 3, soe;
2228
2229    sol = sizeof soe;
2230    if(getsockopt(sockfd, SOL_SOCKET, SO_ERROR, &soe, &sol) == -1 &&
2231          errno == ENOSYS)
2232       return 1;
2233    if(setsockopt(sockfd, SOL_SOCKET, SO_KEEPALIVE, NULL, 0) == -1 &&
2234          errno == ENOSYS)
2235       return 1;
2236    return 0;
2237 }
2238 !
2239
2240 feat_yes SOCKETS &&
2241    link_check nonblocksock 'non-blocking sockets' \
2242       '#define HAVE_NONBLOCKSOCK' << \!
2243 #include <sys/types.h>
2244 #include <sys/select.h>
2245 #include <sys/socket.h>
2246 #include <sys/time.h>
2247 #include <arpa/inet.h>
2248 #include <netinet/in.h>
2249 #include <fcntl.h>
2250 #include <stdlib.h>
2251 #include <unistd.h>
2252 # include <errno.h>
2253 int main(void){
2254    fd_set fdset;
2255    struct timeval tv;
2256    struct sockaddr_in sin;
2257    socklen_t sol;
2258    int sofd, soe;
2259
2260    if((sofd = socket(AF_INET, SOCK_STREAM, 0)) == -1 && errno == ENOSYS)
2261       return 1;
2262    if(fcntl(sofd, F_SETFL, O_NONBLOCK) != 0)
2263       return 1;
2264
2265    sin.sin_family = AF_INET;
2266    sin.sin_addr.s_addr = inet_addr("127.0.0.1");
2267    sin.sin_port = htons(80);
2268    if(connect(sofd, &sin, sizeof sin) == -1 && errno == ENOSYS)
2269       return 1;
2270
2271    FD_ZERO(&fdset);
2272    FD_SET(sofd, &fdset);
2273    tv.tv_sec = 10;
2274    tv.tv_usec = 0;
2275    if((soe = select(sofd + 1, NULL, &fdset, NULL, &tv)) == 1){
2276       sol = sizeof soe;
2277       getsockopt(sofd, SOL_SOCKET, SO_ERROR, &soe, &sol);
2278       if(soe == 0)
2279          return 0;
2280    }else if(soe == -1 && errno == ENOSYS)
2281       return 1;
2282
2283    close(sofd);
2284    return 0;
2285 }
2286 !
2287
2288 if feat_yes SOCKETS; then
2289    link_check getaddrinfo 'getaddrinfo(3)' \
2290       '#define HAVE_GETADDRINFO' << \!
2291 #include <sys/types.h>
2292 #include <sys/socket.h>
2293 #include <stdio.h>
2294 #include <netdb.h>
2295 int main(void){
2296    struct addrinfo a, *ap;
2297    int lrv;
2298
2299    switch((lrv = getaddrinfo("foo", "0", &a, &ap))){
2300    case EAI_NONAME:
2301    case EAI_SERVICE:
2302    default:
2303       fprintf(stderr, "%s\n", gai_strerror(lrv));
2304    case 0:
2305       break;
2306    }
2307    return 0;
2308 }
2309 !
2310 fi
2311
2312 if feat_yes SOCKETS && [ -z "${have_getaddrinfo}" ]; then
2313    compile_check arpa_inet_h '<arpa/inet.h>' \
2314       '#define HAVE_ARPA_INET_H' << \!
2315 #include <sys/types.h>
2316 #include <sys/socket.h>
2317 #include <netdb.h>
2318 #include <netinet/in.h>
2319 #include <arpa/inet.h>
2320 !
2321
2322    ${cat} > ${tmp2}.c << \!
2323 #include <sys/types.h>
2324 #include <sys/socket.h>
2325 #include <stdio.h>
2326 #include <string.h>
2327 #include <netdb.h>
2328 #include <netinet/in.h>
2329 #ifdef HAVE_ARPA_INET_H
2330 #include <arpa/inet.h>
2331 #endif
2332 int main(void){
2333    struct sockaddr_in servaddr;
2334    unsigned short portno;
2335    struct servent *ep;
2336    struct hostent *hp;
2337    struct in_addr **pptr;
2338
2339    portno = 0;
2340    if((ep = getservbyname("POPPY-PORT", "tcp")) != NULL)
2341       portno = (unsigned short)ep->s_port;
2342
2343    if((hp = gethostbyname("POPPY-HOST")) != NULL){
2344       pptr = (struct in_addr**)hp->h_addr_list;
2345       if(hp->h_addrtype != AF_INET)
2346          fprintf(stderr, "au\n");
2347    }else{
2348       switch(h_errno){
2349       case HOST_NOT_FOUND:
2350       case TRY_AGAIN:
2351       case NO_RECOVERY:
2352       case NO_DATA:
2353          break;
2354       default:
2355          fprintf(stderr, "au\n");
2356          break;
2357       }
2358    }
2359
2360    memset(&servaddr, 0, sizeof servaddr);
2361    servaddr.sin_family = AF_INET;
2362    servaddr.sin_port = htons(portno);
2363    memcpy(&servaddr.sin_addr, *pptr, sizeof(struct in_addr));
2364    fprintf(stderr, "Would connect to %s:%d ...\n",
2365       inet_ntoa(**pptr), (int)portno);
2366    return 0;
2367 }
2368 !
2369
2370    < ${tmp2}.c link_check gethostbyname 'get(serv|host)byname(3)' ||
2371       < ${tmp2}.c link_check gethostbyname \
2372          'get(serv|host)byname(3) (via -nsl)' '' '-lnsl' ||
2373       < ${tmp2}.c link_check gethostbyname \
2374          'get(serv|host)byname(3) (via -lsocket -nsl)' \
2375          '' '-lsocket -lnsl' ||
2376       feat_bail_required SOCKETS
2377 fi
2378
2379 feat_yes SOCKETS && [ -n "${have_sockopt}" ] &&
2380    link_check so_xtimeo 'SO_{RCV,SND}TIMEO' '#define HAVE_SO_XTIMEO' << \!
2381 #include <sys/socket.h>
2382 #include <stdlib.h>
2383 int main(void){
2384    struct timeval tv;
2385    int sockfd = 3;
2386
2387    tv.tv_sec = 42;
2388    tv.tv_usec = 21;
2389    setsockopt(sockfd, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof tv);
2390    setsockopt(sockfd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof tv);
2391    return 0;
2392 }
2393 !
2394
2395 feat_yes SOCKETS && [ -n "${have_sockopt}" ] &&
2396    link_check so_linger 'SO_LINGER' '#define HAVE_SO_LINGER' << \!
2397 #include <sys/socket.h>
2398 #include <stdlib.h>
2399 int main(void){
2400    struct linger li;
2401    int sockfd = 3;
2402
2403    li.l_onoff = 1;
2404    li.l_linger = 42;
2405    setsockopt(sockfd, SOL_SOCKET, SO_LINGER, &li, sizeof li);
2406    return 0;
2407 }
2408 !
2409
2410 VAL_TLS_FEATURES=
2411 if feat_yes TLS; then # {{{
2412    # {{{ LibreSSL decided to define OPENSSL_VERSION_NUMBER with a useless value
2413    # instead of keeping it at the one that corresponds to the OpenSSL at fork
2414    # time: we need to test it first in order to get things right
2415    if compile_check _xtls 'TLS (LibreSSL)' \
2416       '#define HAVE_TLS
2417       #define HAVE_XTLS
2418       #define HAVE_XTLS_RESSL
2419       #define HAVE_XTLS_OPENSSL 0' << \!
2420 #include <openssl/opensslv.h>
2421 #ifdef LIBRESSL_VERSION_NUMBER
2422 #else
2423 # error nope
2424 #endif
2425 !
2426    then
2427       ossl_v1_1=
2428       VAL_TLS_FEATURES=libressl
2429    # TODO OPENSSL_IS_BORINGSSL, but never tried that one!
2430    elif compile_check _xtls 'TLS (OpenSSL >= v1.1.0)' \
2431       '#define HAVE_TLS
2432       #define HAVE_XTLS
2433       #define HAVE_XTLS_OPENSSL 0x10100' << \!
2434 #include <openssl/opensslv.h>
2435 #if OPENSSL_VERSION_NUMBER + 0 >= 0x10100000L
2436 #else
2437 # error nope
2438 #endif
2439 !
2440    then
2441       ossl_v1_1=1
2442       VAL_TLS_FEATURES=libssl-0x10100
2443    elif compile_check _xtls 'TLS (OpenSSL)' \
2444       '#define HAVE_TLS
2445       #define HAVE_XTLS
2446       #define HAVE_XTLS_OPENSSL 0x10000' << \!
2447 #include <openssl/opensslv.h>
2448 #ifdef OPENSSL_VERSION_NUMBER
2449 #else
2450 # error nope
2451 #endif
2452 !
2453    then
2454       ossl_v1_1=
2455       VAL_TLS_FEATURES=libssl-0x10000
2456    else
2457       feat_bail_required TLS
2458    fi # }}}
2459
2460    if feat_yes TLS; then # {{{
2461       if [ -n "${ossl_v1_1}" ]; then
2462          without_check yes xtls 'TLS new style TLS_client_method(3ssl)' \
2463             '#define n_XTLS_CLIENT_METHOD TLS_client_method' \
2464             '-lssl -lcrypto'
2465       elif link_check xtls 'TLS new style TLS_client_method(3ssl)' \
2466             '#define n_XTLS_CLIENT_METHOD TLS_client_method' \
2467             '-lssl -lcrypto' << \!
2468 #include <openssl/ssl.h>
2469 #include <openssl/err.h>
2470 #include <openssl/x509v3.h>
2471 #include <openssl/x509.h>
2472 #include <openssl/rand.h>
2473 #ifdef OPENSSL_NO_TLS1 /* TODO only deduced from OPENSSL_NO_SSL[23]! */
2474 # error We need TLSv1.
2475 #endif
2476 int main(void){
2477    SSL_CTX *ctx = SSL_CTX_new(TLS_client_method());
2478
2479    SSL_CTX_free(ctx);
2480    PEM_read_PrivateKey(0, 0, 0, 0);
2481    return 0;
2482 }
2483 !
2484       then
2485          :
2486       elif link_check xtls 'TLS old style SSLv23_client_method(3ssl)' \
2487             '#define n_XTLS_CLIENT_METHOD SSLv23_client_method' \
2488             '-lssl -lcrypto' << \!
2489 #include <openssl/ssl.h>
2490 #include <openssl/err.h>
2491 #include <openssl/x509v3.h>
2492 #include <openssl/x509.h>
2493 #include <openssl/rand.h>
2494 #if defined OPENSSL_NO_SSL3 &&\
2495       defined OPENSSL_NO_TLS1 /* TODO only deduced from OPENSSL_NO_SSL[23]! */
2496 # error We need one of SSLv3 and TLSv1.
2497 #endif
2498 int main(void){
2499    SSL_CTX *ctx = SSL_CTX_new(SSLv23_client_method());
2500
2501    SSL_CTX_free(ctx);
2502    PEM_read_PrivateKey(0, 0, 0, 0);
2503    return 0;
2504 }
2505 !
2506       then
2507          :
2508       else
2509          feat_bail_required TLS
2510       fi
2511    fi # }}}
2512
2513    if feat_yes TLS; then # {{{
2514       if [ -n "${ossl_v1_1}" ]; then
2515          without_check yes xtls_stack_of 'TLS STACK_OF()' \
2516             '#define HAVE_XTLS_STACK_OF'
2517       elif compile_check xtls_stack_of 'TLS STACK_OF()' \
2518             '#define HAVE_XTLS_STACK_OF' << \!
2519 #include <stdio.h> /* For C89 NULL */
2520 #include <openssl/ssl.h>
2521 #include <openssl/err.h>
2522 #include <openssl/x509v3.h>
2523 #include <openssl/x509.h>
2524 #include <openssl/rand.h>
2525 int main(void){
2526    STACK_OF(GENERAL_NAME) *gens = NULL;
2527
2528    printf("%p", gens); /* to use it */
2529    return 0;
2530 }
2531 !
2532       then
2533          :
2534       fi
2535
2536       if [ -n "${ossl_v1_1}" ]; then
2537          without_check yes xtls_conf 'TLS OpenSSL_modules_load_file(3ssl)' \
2538             '#define HAVE_XTLS_CONFIG'
2539          VAL_TLS_FEATURES="${VAL_TLS_FEATURES},+modules-load-file"
2540       elif link_check xtls_conf \
2541             'TLS OpenSSL_modules_load_file(3ssl) support' \
2542             '#define HAVE_XTLS_CONFIG' << \!
2543 #include <stdio.h> /* For C89 NULL */
2544 #include <openssl/conf.h>
2545 int main(void){
2546    CONF_modules_load_file(NULL, NULL, CONF_MFLAGS_IGNORE_MISSING_FILE);
2547    CONF_modules_free();
2548    return 0;
2549 }
2550 !
2551       then
2552          VAL_TLS_FEATURES="${VAL_TLS_FEATURES},+modules-load-file"
2553       else
2554          VAL_TLS_FEATURES="${VAL_TLS_FEATURES},-modules-load-file"
2555       fi
2556
2557       if [ -n "${ossl_v1_1}" ]; then
2558          without_check yes xtls_conf_ctx 'TLS SSL_CONF_CTX support' \
2559             '#define HAVE_XTLS_CONF_CTX'
2560          VAL_TLS_FEATURES="${VAL_TLS_FEATURES},+conf-ctx"
2561       elif link_check xtls_conf_ctx 'TLS SSL_CONF_CTX support' \
2562          '#define HAVE_XTLS_CONF_CTX' << \!
2563 #include <openssl/ssl.h>
2564 #include <openssl/err.h>
2565 int main(void){
2566    SSL_CTX *ctx = SSL_CTX_new(n_XSSL_CLIENT_METHOD());
2567    SSL_CONF_CTX *cctx = SSL_CONF_CTX_new();
2568
2569    SSL_CONF_CTX_set_flags(cctx,
2570       SSL_CONF_FLAG_FILE | SSL_CONF_FLAG_CLIENT |
2571       SSL_CONF_FLAG_CERTIFICATE | SSL_CONF_FLAG_SHOW_ERRORS);
2572    SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
2573    SSL_CONF_cmd(cctx, "Protocol", "ALL");
2574    SSL_CONF_CTX_finish(cctx);
2575    SSL_CONF_CTX_free(cctx);
2576    SSL_CTX_free(ctx);
2577    return 0;
2578 }
2579 !
2580       then
2581          VAL_TLS_FEATURES="${VAL_TLS_FEATURES},+conf-ctx"
2582       else
2583          VAL_TLS_FEATURES="${VAL_TLS_FEATURES},-conf-ctx"
2584       fi
2585
2586       if [ -n "${ossl_v1_1}" ]; then
2587          without_check yes xtls_ctx_config 'TLS SSL_CTX_config(3ssl)' \
2588             '#define HAVE_XTLS_CTX_CONFIG'
2589          VAL_TLS_FEATURES="${VAL_TLS_FEATURES},+ctx-config"
2590       elif [ -n "${have_xtls_conf}" ] && [ -n "${have_xtls_conf_ctx}" ] &&
2591             link_check xtls_ctx_config 'TLS SSL_CTX_config(3ssl)' \
2592                '#define HAVE_XTLS_CTX_CONFIG' << \!
2593 #include <stdio.h> /* For C89 NULL */
2594 #include <openssl/ssl.h>
2595 int main(void){
2596    SSL_CTX_config(NULL, "SOMEVAL");
2597    return 0;
2598 }
2599 !
2600       then
2601          VAL_TLS_FEATURES="${VAL_TLS_FEATURES},+ctx-config"
2602       else
2603          VAL_TLS_FEATURES="${VAL_TLS_FEATURES},-ctx-config"
2604       fi
2605
2606       if [ -n "${ossl_v1_1}" ] && [ -n "${have_xtls_conf_ctx}" ]; then
2607          without_check yes xtls_set_maxmin_proto \
2608             'TLS SSL_CTX_set_min_proto_version(3ssl)' \
2609             '#define HAVE_XTLS_SET_MIN_PROTO_VERSION'
2610          VAL_TLS_FEATURES="${VAL_TLS_FEATURES},+ctx-set-maxmin-proto"
2611       elif link_check xtls_set_maxmin_proto \
2612          'TLS SSL_CTX_set_min_proto_version(3ssl)' \
2613          '#define HAVE_XTLS_SET_MIN_PROTO_VERSION' << \!
2614 #include <stdio.h> /* For C89 NULL */
2615 #include <openssl/ssl.h>
2616 int main(void){
2617    SSL_CTX_set_min_proto_version(NULL, 0);
2618    SSL_CTX_set_max_proto_version(NULL, 10);
2619    return 0;
2620 }
2621 !
2622       then
2623          VAL_TLS_FEATURES="${VAL_TLS_FEATURES},+ctx-set-maxmin-proto"
2624       else
2625          VAL_TLS_FEATURES="${VAL_TLS_FEATURES},-ctx-set-maxmin-proto"
2626       fi
2627
2628       if [ -n "${ossl_v1_1}" ] && [ -n "${have_xtls_conf_ctx}" ]; then
2629          without_check yes xtls_set_ciphersuites \
2630             'TLSv1.3 SSL_CTX_set_ciphersuites(3ssl)' \
2631             '#define HAVE_XTLS_SET_CIPHERSUITES'
2632          VAL_TLS_FEATURES="${VAL_TLS_FEATURES},+ctx-set-ciphersuites"
2633       elif link_check xtls_set_ciphersuites \
2634          'TLSv1.3 SSL_CTX_set_ciphersuites(3ssl)' \
2635          '#define HAVE_XTLS_SET_CIPHERSUITES' << \!
2636 #include <stdio.h> /* For C89 NULL */
2637 #include <openssl/ssl.h>
2638 int main(void){
2639    SSL_CTX_set_ciphersuites(NULL, NULL);
2640    return 0;
2641 }
2642 !
2643       then
2644          VAL_TLS_FEATURES="${VAL_TLS_FEATURES},+ctx-set-ciphersuites"
2645       else
2646          VAL_TLS_FEATURES="${VAL_TLS_FEATURES},-ctx-set-ciphersuites"
2647       fi
2648    fi # feat_yes SSL }}}
2649
2650    if feat_yes TLS; then # digest etc algorithms {{{
2651       if feat_yes TLS_ALL_ALGORITHMS; then
2652          if [ -n "${ossl_v1_1}" ]; then
2653             without_check yes tls_all_algo 'TLS all-algorithms support' \
2654                '#define HAVE_TLS_ALL_ALGORITHMS'
2655          elif link_check tls_all_algo 'TLS all-algorithms support' \
2656             '#define HAVE_TLS_ALL_ALGORITHMS' << \!
2657 #include <openssl/evp.h>
2658 int main(void){
2659    OpenSSL_add_all_algorithms();
2660    EVP_get_cipherbyname("two cents i never exist");
2661    EVP_cleanup();
2662    return 0;
2663 }
2664 !
2665          then
2666             :
2667          else
2668             feat_bail_required TLS_ALL_ALGORITHMS
2669          fi
2670       elif [ -n "${ossl_v1_1}" ]; then
2671          without_check yes tls_all_algo \
2672             'TLS all-algorithms (always available in v1.1.0+)' \
2673             '#define HAVE_TLS_ALL_ALGORITHMS'
2674       fi
2675
2676       # Blake
2677       link_check tls_blake2 'TLS: BLAKE2 digests' \
2678             '#define HAVE_XTLS_BLAKE2' << \!
2679 #include <openssl/evp.h>
2680 int main(void){
2681    EVP_blake2b512();
2682    EVP_blake2s256();
2683    return 0;
2684 }
2685 !
2686
2687       # SHA-3
2688       link_check tls_sha3 'TLS: SHA-3 digests' '#define HAVE_XTLS_SHA3' << \!
2689 #include <openssl/evp.h>
2690 int main(void){
2691    EVP_sha3_512();
2692    EVP_sha3_384();
2693    EVP_sha3_256();
2694    EVP_sha3_224();
2695    return 0;
2696 }
2697 !
2698
2699       if feat_yes MD5 && feat_no NOEXTMD5; then
2700          run_check tls_md5 'TLS: MD5 digest' '#define HAVE_XTLS_MD5' << \!
2701 #include <stdlib.h>
2702 #include <string.h>
2703 #include <openssl/md5.h>
2704 int main(void){
2705    char const dat[] = "abrakadabrafidibus";
2706    char dig[16], hex[16 * 2];
2707    MD5_CTX ctx;
2708    size_t i, j;
2709
2710    memset(dig, 0, sizeof(dig));
2711    memset(hex, 0, sizeof(hex));
2712    MD5_Init(&ctx);
2713    MD5_Update(&ctx, dat, sizeof(dat) - 1);
2714    MD5_Final(dig, &ctx);
2715
2716 #define hexchar(n) ((n) > 9 ? (n) - 10 + 'a' : (n) + '0')
2717    for(i = 0; i < sizeof(hex) / 2; i++){
2718       j = i << 1;
2719       hex[j] = hexchar((dig[i] & 0xf0) >> 4);
2720       hex[++j] = hexchar(dig[i] & 0x0f);
2721    }
2722    return !!memcmp("6d7d0a3d949da2e96f2aa010f65d8326", hex, sizeof(hex));
2723 }
2724 !
2725       fi
2726    fi # }}}
2727
2728    if feat_yes TLS; then
2729       feat_def TLS_ALL_ALGORITHMS
2730    else
2731       feat_bail_required TLS_ALL_ALGORITHMS
2732    fi
2733 else
2734    feat_is_disabled TLS
2735    feat_is_disabled TLS_ALL_ALGORITHMS
2736 fi # }}} feat_yes TLS
2737 printf '#define VAL_TLS_FEATURES "#'"${VAL_TLS_FEATURES}"'"\n' >> ${h}
2738
2739 if [ "${have_xtls}" = yes ]; then
2740    OPT_SMIME=1
2741 else
2742    OPT_SMIME=0
2743 fi
2744 feat_def SMIME
2745
2746 # VAL_RANDOM {{{
2747 if val_allof VAL_RANDOM \
2748       "arc4,tls,libgetrandom,sysgetrandom,urandom,builtin,error"; then
2749    :
2750 else
2751    msg 'ERROR: VAL_RANDOM with invalid entries: %s' "${VAL_RANDOM}"
2752    config_exit 1
2753 fi
2754
2755 val_random_arc4() {
2756    link_check arc4random 'VAL_RANDOM: arc4random(3)' \
2757       '#define HAVE_RANDOM n_RANDOM_IMPL_ARC4' << \!
2758 #include <stdlib.h>
2759 int main(void){
2760    arc4random();
2761    return 0;
2762 }
2763 !
2764 }
2765
2766 val_random_tls() {
2767    if feat_yes TLS; then
2768       msg ' . VAL_RANDOM: tls ... yes'
2769       echo '#define HAVE_RANDOM n_RANDOM_IMPL_TLS' >> ${h}
2770       return 0
2771    else
2772       msg ' . VAL_RANDOM: tls ... no'
2773       return 1
2774    fi
2775 }
2776
2777 val_random_libgetrandom() {
2778    link_check getrandom 'VAL_RANDOM: getrandom(3) (in sys/random.h)' \
2779       '#define HAVE_RANDOM n_RANDOM_IMPL_GETRANDOM
2780       #define n_RANDOM_GETRANDOM_FUN(B,S) getrandom(B, S, 0)
2781       #define n_RANDOM_GETRANDOM_H <sys/random.h>' <<\!
2782 #include <sys/random.h>
2783 int main(void){
2784    char buf[256];
2785    getrandom(buf, sizeof buf, 0);
2786    return 0;
2787 }
2788 !
2789 }
2790
2791 val_random_sysgetrandom() {
2792    link_check getrandom 'VAL_RANDOM: getrandom(2) (via syscall(2))' \
2793       '#define HAVE_RANDOM n_RANDOM_IMPL_GETRANDOM
2794       #define n_RANDOM_GETRANDOM_FUN(B,S) syscall(SYS_getrandom, B, S, 0)
2795       #define n_RANDOM_GETRANDOM_H <sys/syscall.h>' <<\!
2796 #include <sys/syscall.h>
2797 int main(void){
2798    char buf[256];
2799    syscall(SYS_getrandom, buf, sizeof buf, 0);
2800    return 0;
2801 }
2802 !
2803 }
2804
2805 val_random_urandom() {
2806    msg_nonl ' . VAL_RANDOM: /dev/urandom ... '
2807    if feat_yes CROSS_BUILD; then
2808       msg 'yes (unchecked)'
2809       echo '#define HAVE_RANDOM n_RANDOM_IMPL_URANDOM' >> ${h}
2810    elif [ -f /dev/urandom ]; then
2811       msg yes
2812       echo '#define HAVE_RANDOM n_RANDOM_IMPL_URANDOM' >> ${h}
2813    else
2814       msg no
2815       return 1
2816    fi
2817    return 0
2818 }
2819
2820 val_random_builtin() {
2821    msg_nonl ' . VAL_RANDOM: builtin ... '
2822    if [ -n "${have_no_subsecond_time}" ]; then
2823       msg 'no\nERROR: %s %s' 'without a specialized PRG ' \
2824          'one of clock_gettime(2) and gettimeofday(2) is required.'
2825       config_exit 1
2826    else
2827       msg yes
2828       echo '#define HAVE_RANDOM n_RANDOM_IMPL_BUILTIN' >> ${h}
2829    fi
2830 }
2831
2832 val_random_error() {
2833    msg 'ERROR: VAL_RANDOM search reached "error" entry'
2834    config_exit 42
2835 }
2836
2837 oifs=${IFS}
2838 IFS=", "
2839 VAL_RANDOM="${VAL_RANDOM},error"
2840 set -- ${VAL_RANDOM}
2841 IFS=${oifs}
2842 for randfun
2843 do
2844    eval val_random_$randfun && break
2845 done
2846 # }}} VAL_RANDOM
2847
2848 feat_def SMTP
2849 feat_def POP3
2850 feat_def IMAP
2851
2852 if feat_yes GSSAPI; then
2853    ${cat} > ${tmp2}.c << \!
2854 #include <gssapi/gssapi.h>
2855 int main(void){
2856    gss_import_name(0, 0, GSS_C_NT_HOSTBASED_SERVICE, 0);
2857    gss_init_sec_context(0,0,0,0,0,0,0,0,0,0,0,0,0);
2858    return 0;
2859 }
2860 !
2861    ${sed} -e '1s/gssapi\///' < ${tmp2}.c > ${tmp3}.c
2862
2863    if acmd_set i krb5-config; then
2864       GSS_LIBS="`CFLAGS= ${i} --libs gssapi`"
2865       GSS_INCS="`CFLAGS= ${i} --cflags`"
2866       i='GSS-API via krb5-config(1)'
2867    else
2868       GSS_LIBS='-lgssapi'
2869       GSS_INCS=
2870       i='GSS-API in gssapi/gssapi.h, libgssapi'
2871    fi
2872    if < ${tmp2}.c link_check gss \
2873          "${i}" '#define HAVE_GSSAPI' "${GSS_LIBS}" "${GSS_INCS}" ||\
2874       < ${tmp3}.c link_check gss \
2875          'GSS-API in gssapi.h, libgssapi' \
2876          '#define HAVE_GSSAPI
2877          #define GSSAPI_REG_INCLUDE' \
2878          '-lgssapi' ||\
2879       < ${tmp2}.c link_check gss 'GSS-API in libgssapi_krb5' \
2880          '#define HAVE_GSSAPI' \
2881          '-lgssapi_krb5' ||\
2882       < ${tmp3}.c link_check gss \
2883          'GSS-API in libgssapi, OpenBSD-style (pre 5.3)' \
2884          '#define HAVE_GSSAPI
2885          #define GSS_REG_INCLUDE' \
2886          '-lgssapi -lkrb5 -lcrypto' \
2887          '-I/usr/include/kerberosV' ||\
2888       < ${tmp2}.c link_check gss 'GSS-API in libgss' \
2889          '#define HAVE_GSSAPI' \
2890          '-lgss' ||\
2891       link_check gss 'GSS-API in libgssapi_krb5, old-style' \
2892          '#define HAVE_GSSAPI
2893          #define GSSAPI_OLD_STYLE' \
2894          '-lgssapi_krb5' << \!
2895 #include <gssapi/gssapi.h>
2896 #include <gssapi/gssapi_generic.h>
2897 int main(void){
2898    gss_import_name(0, 0, gss_nt_service_name, 0);
2899    gss_init_sec_context(0,0,0,0,0,0,0,0,0,0,0,0,0);
2900    return 0;
2901 }
2902 !
2903    then
2904       :
2905    else
2906       feat_bail_required GSSAPI
2907    fi
2908 else
2909    feat_is_disabled GSSAPI
2910 fi # feat_yes GSSAPI
2911
2912 feat_def NETRC
2913 feat_def AGENT
2914
2915 if feat_yes IDNA; then # {{{
2916    if val_allof VAL_IDNA "idnkit,idn2,idn"; then
2917       :
2918    else
2919       msg 'ERROR: VAL_IDNA with invalid entries: %s' "${VAL_IDNA}"
2920       config_exit 1
2921    fi
2922
2923    val_idna_idn2() {
2924       link_check idna 'OPT_IDNA: GNU Libidn2' \
2925          '#define HAVE_IDNA n_IDNA_IMPL_LIBIDN2' '-lidn2' << \!
2926 #include <idn2.h>
2927 int main(void){
2928    char *idna_utf8, *idna_lc;
2929
2930    if(idn2_to_ascii_8z("does.this.work", &idna_utf8,
2931          IDN2_NONTRANSITIONAL | IDN2_TRANSITIONAL) != IDN2_OK)
2932       return 1;
2933    if(idn2_to_unicode_8zlz(idna_utf8, &idna_lc, 0) != IDN2_OK)
2934       return 1;
2935    idn2_free(idna_lc);
2936    idn2_free(idna_utf8);
2937    return 0;
2938 }
2939 !
2940    }
2941
2942    val_idna_idn() {
2943       link_check idna 'OPT_IDNA: GNU Libidn' \
2944          '#define HAVE_IDNA n_IDNA_IMPL_LIBIDN' '-lidn' << \!
2945 #include <idna.h>
2946 #include <idn-free.h>
2947 #include <stringprep.h> /* XXX we actually use our own iconv instead */
2948 int main(void){
2949    char *utf8, *idna_ascii, *idna_utf8;
2950
2951    utf8 = stringprep_locale_to_utf8("does.this.work");
2952    if (idna_to_ascii_8z(utf8, &idna_ascii, IDNA_USE_STD3_ASCII_RULES)
2953          != IDNA_SUCCESS)
2954       return 1;
2955    idn_free(idna_ascii);
2956    /* (Rather link check only here) */
2957    idna_utf8 = stringprep_convert(idna_ascii, "UTF-8", "de_DE");
2958    return 0;
2959 }
2960 !
2961    }
2962
2963    val_idna_idnkit() {
2964       link_check idna 'OPT_IDNA: idnkit' \
2965          '#define HAVE_IDNA n_IDNA_IMPL_IDNKIT' '-lidnkit' << \!
2966 #include <stdio.h>
2967 #include <idn/api.h>
2968 #include <idn/result.h>
2969 int main(void){
2970    idn_result_t r;
2971    char ace_name[256];
2972    char local_name[256];
2973
2974    r = idn_encodename(IDN_ENCODE_APP, "does.this.work", ace_name,
2975          sizeof(ace_name));
2976    if (r != idn_success) {
2977       fprintf(stderr, "idn_encodename failed: %s\n", idn_result_tostring(r));
2978       return 1;
2979    }
2980    r = idn_decodename(IDN_DECODE_APP, ace_name, local_name, sizeof(local_name));
2981    if (r != idn_success) {
2982       fprintf(stderr, "idn_decodename failed: %s\n", idn_result_tostring(r));
2983       return 1;
2984    }
2985    return 0;
2986 }
2987 !
2988    }
2989
2990    val_idna_bye() {
2991       feat_bail_required IDNA
2992    }
2993
2994    oifs=${IFS}
2995    IFS=", "
2996    VAL_IDNA="${VAL_IDNA},bye"
2997    set -- ${VAL_IDNA}
2998    IFS=${oifs}
2999    for randfun
3000    do
3001       eval val_idna_$randfun && break
3002    done
3003 else
3004    feat_is_disabled IDNA
3005 fi # }}} IDNA
3006
3007 feat_def IMAP_SEARCH
3008
3009 if feat_yes REGEX; then
3010    if link_check regex 'regular expressions' '#define HAVE_REGEX' << \!
3011 #include <regex.h>
3012 #include <stdlib.h>
3013 int main(void){
3014    size_t xret;
3015    int status;
3016    regex_t re;
3017
3018    status = regcomp(&re, ".*bsd", REG_EXTENDED | REG_ICASE | REG_NOSUB);
3019    xret = regerror(status, &re, NULL, 0);
3020    status = regexec(&re, "plan9", 0,NULL, 0);
3021    regfree(&re);
3022    return !(status == REG_NOMATCH);
3023 }
3024 !
3025    then
3026       :
3027    else
3028       feat_bail_required REGEX
3029    fi
3030 else
3031    feat_is_disabled REGEX
3032 fi
3033
3034 if feat_yes MLE; then
3035    if [ -n "${have_c90amend1}" ]; then
3036       have_mle=1
3037       echo '#define HAVE_MLE' >> ${h}
3038    else
3039       feat_bail_required MLE
3040    fi
3041 else
3042    feat_is_disabled MLE
3043 fi
3044
3045 # Generic have-a-line-editor switch for those who need it below
3046 if [ -n "${have_mle}" ]; then
3047    have_cle=1
3048 fi
3049
3050 if feat_yes HISTORY; then
3051    if [ -n "${have_cle}" ]; then
3052       echo '#define HAVE_HISTORY' >> ${h}
3053    else
3054       feat_is_unsupported HISTORY
3055    fi
3056 else
3057    feat_is_disabled HISTORY
3058 fi
3059
3060 if feat_yes KEY_BINDINGS; then
3061    if [ -n "${have_mle}" ]; then
3062       echo '#define HAVE_KEY_BINDINGS' >> ${h}
3063    else
3064       feat_is_unsupported KEY_BINDINGS
3065    fi
3066 else
3067    feat_is_disabled KEY_BINDINGS
3068 fi
3069
3070 if feat_yes TERMCAP; then # {{{
3071    ADDINC=
3072    __termcaplib() {
3073       link_check termcap "termcap(5) (via ${4}${ADDINC})" \
3074          "#define HAVE_TERMCAP${3}" "${1}" "${ADDINC}" << _EOT
3075 #include <stdio.h>
3076 #include <stdlib.h>
3077 ${2}
3078 #include <term.h>
3079 #define UNCONST(P) ((void*)(unsigned long)(void const*)(P))
3080 static int my_putc(int c){return putchar(c);}
3081 int main(void){
3082    char buf[1024+512], cmdbuf[2048], *cpb, *r1;
3083    int r2 = OK, r3 = ERR;
3084
3085    tgetent(buf, getenv("TERM"));
3086    cpb = cmdbuf;
3087    r1 = tgetstr(UNCONST("cm"), &cpb);
3088    tgoto(r1, 1, 1);
3089    r2 = tgetnum(UNCONST("Co"));
3090    r3 = tgetflag(UNCONST("ut"));
3091    tputs("cr", 1, &my_putc);
3092    return (r1 == NULL || r2 == -1 || r3 == 0);
3093 }
3094 _EOT
3095    }
3096
3097    __terminfolib() {
3098       link_check terminfo "terminfo(5) (via ${2}${ADDINC})" \
3099          '#define HAVE_TERMCAP
3100          #define HAVE_TERMCAP_CURSES
3101          #define HAVE_TERMINFO' "${1}" "${ADDINC}" << _EOT
3102 #include <stdio.h>
3103 #include <curses.h>
3104 #include <term.h>
3105 #define UNCONST(P) ((void*)(unsigned long)(void const*)(P))
3106 static int my_putc(int c){return putchar(c);}
3107 int main(void){
3108    int er, r0, r1, r2;
3109    char *r3, *tp;
3110
3111    er = OK;
3112    r0 = setupterm(NULL, 1, &er);
3113    r1 = tigetflag(UNCONST("bce"));
3114    r2 = tigetnum(UNCONST("colors"));
3115    r3 = tigetstr(UNCONST("cr"));
3116    tp = tparm(r3, NULL, NULL, 0,0,0,0,0,0,0);
3117    tputs(tp, 1, &my_putc);
3118    return (r0 == ERR || r1 == -1 || r2 == -2 || r2 == -1 ||
3119       r3 == (char*)-1 || r3 == NULL);
3120 }
3121 _EOT
3122    }
3123
3124    if feat_yes TERMCAP_VIA_TERMINFO; then
3125       ADDINC=
3126       do_me() {
3127          xbail=
3128          __terminfolib -ltinfo -ltinfo ||
3129             __terminfolib -lcurses -lcurses ||
3130             __terminfolib -lcursesw -lcursesw ||
3131          xbail=y
3132       }
3133       do_me
3134       if [ -n "${xbail}" ] && [ -d /usr/local/include/ncurses ]; then
3135          ADDINC=' -I/usr/local/include/ncurses'
3136          do_me
3137       fi
3138       if [ -n "${xbail}" ] && [ -d /usr/include/ncurses ]; then
3139          ADDINC=' -I/usr/include/ncurses'
3140          do_me
3141       fi
3142       [ -n "${xbail}" ] && feat_bail_required TERMCAP_VIA_TERMINFO
3143    fi
3144
3145    if [ -z "${have_terminfo}" ]; then
3146       ADDINC=
3147       do_me() {
3148          xbail=
3149          __termcaplib -ltermcap '' '' '-ltermcap' ||
3150             __termcaplib -ltermcap '#include <curses.h>' '
3151                #define HAVE_TERMCAP_CURSES' \
3152                'curses.h / -ltermcap' ||
3153             __termcaplib -lcurses '#include <curses.h>' '
3154                #define HAVE_TERMCAP_CURSES' \
3155                'curses.h / -lcurses' ||
3156             __termcaplib -lcursesw '#include <curses.h>' '
3157                #define HAVE_TERMCAP_CURSES' \
3158                'curses.h / -lcursesw' ||
3159             xbail=y
3160       }
3161       do_me
3162       if [ -n "${xbail}" ] && [ -d /usr/local/include/ncurses ]; then
3163          ADDINC=' -I/usr/local/include/ncurses'
3164          do_me
3165       fi
3166       if [ -n "${xbail}" ] && [ -d /usr/include/ncurses ]; then
3167          ADDINC=' -I/usr/include/ncurses'
3168          do_me
3169       fi
3170       [ -n "${xbail}" ] && feat_bail_required TERMCAP
3171
3172       if [ -n "${have_termcap}" ]; then
3173          run_check tgetent_null \
3174             "tgetent(3) of termcap(5) takes NULL buffer" \
3175             "#define HAVE_TGETENT_NULL_BUF" << _EOT
3176 #include <stdio.h> /* For C89 NULL */
3177 #include <stdlib.h>
3178 #ifdef HAVE_TERMCAP_CURSES
3179 # include <curses.h>
3180 #endif
3181 #include <term.h>
3182 int main(void){
3183    tgetent(NULL, getenv("TERM"));
3184    return 0;
3185 }
3186 _EOT
3187       fi
3188    fi
3189    unset ADDINC
3190 else # }}}
3191    feat_is_disabled TERMCAP
3192    feat_is_disabled TERMCAP_VIA_TERMINFO
3193 fi
3194
3195 if feat_def SPAM_SPAMC; then
3196    if acmd_set i spamc; then
3197       echo "#define SPAM_SPAMC_PATH \"${i}\"" >> ${h}
3198    fi
3199 fi
3200
3201 if feat_yes SPAM_SPAMD; then
3202    if [ -n "${have_af_unix}" ]; then
3203       echo '#define HAVE_SPAM_SPAMD' >> ${h}
3204    else
3205       feat_bail_required SPAM_SPAMD
3206    fi
3207 else
3208    feat_is_disabled SPAM_SPAMD
3209 fi
3210
3211 feat_def SPAM_FILTER
3212
3213 if feat_yes SPAM_SPAMC || feat_yes SPAM_SPAMD || feat_yes SPAM_FILTER; then
3214    echo '#define HAVE_SPAM' >> ${h}
3215 else
3216    echo '/* HAVE_SPAM */' >> ${h}
3217 fi
3218
3219 if feat_yes QUOTE_FOLD; then
3220    if [ -n "${have_c90amend1}" ] && [ -n "${have_wcwidth}" ]; then
3221       echo '#define HAVE_QUOTE_FOLD' >> ${h}
3222    else
3223       feat_bail_required QUOTE_FOLD
3224    fi
3225 else
3226    feat_is_disabled QUOTE_FOLD
3227 fi
3228
3229 feat_def FILTER_HTML_TAGSOUP
3230 feat_def COLOUR
3231 feat_def DOTLOCK
3232 feat_def MD5
3233
3234 ## Summarizing
3235
3236 ${rm} -f ${tmp}
3237 squeeze_em ${inc} ${tmp}
3238 ${mv} ${tmp} ${inc}
3239 squeeze_em ${lib} ${tmp}
3240 ${mv} ${tmp} ${lib}
3241
3242 echo "LIBS = `${cat} ${lib}`" >> ${mk}
3243 echo "INCS = `${cat} ${inc}`" >> ${mk}
3244 echo >> ${mk}
3245
3246 # mk-config.h
3247 ${mv} ${h} ${tmp}
3248 printf '#ifndef n_MK_CONFIG_H\n# define n_MK_CONFIG_H 1\n' > ${h}
3249 ${cat} ${tmp} >> ${h}
3250 printf '\n' >> ${h}
3251 # Also need these for correct "second stage configuration changed" detection */
3252 i=
3253 if (${CC} --version) >/dev/null 2>&1; then
3254    i=`${CC} --version 2>&1 | ${awk} '
3255       BEGIN{l=""}
3256       {if(length($0)) {if(l) l = l "\\\\n"; l = l "@" $0}}
3257       END{gsub(/"/, "", l); print "\\\\n" l}
3258    '`
3259 elif (${CC} -v) >/dev/null 2>&1; then
3260    i=`${CC} -v 2>&1 | ${awk} '
3261       BEGIN{l=""}
3262       {if(length($0)) {if(l) l = l "\\\\n"; l = l "@" $0}}
3263       END{gsub(/"/, "", l); print "\\\\n" l}
3264    '`
3265 fi
3266 printf '#define VAL_BUILD_CC "%s %s %s%s"\n' \
3267    "${CC}" "${CFLAGS}" "" "${i}" >> ${h}
3268 printf '#define VAL_BUILD_LD "%s %s %s"\n' \
3269    "${CC}" "${LDFLAGS}" "`${cat} ${lib}`" >> ${h}
3270 printf '#define VAL_BUILD_REST "%s"\n' "${COMMLINE}" >> ${h}
3271 printf '\n' >> ${h}
3272
3273 # Throw away all temporaries
3274 ${rm} -rf ${tmp0}.* ${tmp0}*
3275
3276 # Create the string that is used by *features* and `version'.
3277 # Take this nice opportunity and generate a visual listing of included and
3278 # non-included features for the person who runs the configuration
3279 echo 'The following features are included (+) or not (-):' > ${tmp}
3280 set -- ${OPTIONS_DETECT} ${OPTIONS} ${OPTIONS_XTRA}
3281 printf '/* The "feature string" */\n' >> ${h}
3282 # Because + is expanded by *folder* if first in "echo $features", put something
3283 printf '#define VAL_FEATURES_CNT '${#}'\n#define VAL_FEATURES "#' >> ${h}
3284 sep=
3285 for opt
3286 do
3287    sdoc=`option_doc_of ${opt}`
3288    [ -z "${sdoc}" ] && continue
3289    sopt="`echo ${opt} | ${tr} '[A-Z]_' '[a-z]-'`"
3290    feat_yes ${opt} && sign=+ || sign=-
3291    printf -- "${sep}${sign}${sopt}" >> ${h}
3292    sep=','
3293    printf ' %s %s: %s\n' ${sign} ${sopt} "${sdoc}" >> ${tmp}
3294 done
3295 # TODO instead of using sh+tr+awk+printf, use awk, drop option_doc_of, inc here
3296 #exec 5>&1 >>${h}
3297 #${awk} -v opts="${OPTIONS_DETECT} ${OPTIONS} ${OPTIONS_XTRA}" \
3298 #   -v xopts="${XOPTIONS_DETECT} ${XOPTIONS} ${XOPTIONS_XTRA}" \
3299 printf '"\n' >> ${h}
3300
3301 # Create the real mk-config.mk
3302 # Note we cannout use explicit ./ filename prefix for source and object
3303 # pathnames because of a bug in bmake(1)
3304 srclist= objlist=
3305 if feat_no AMALGAMATION; then
3306    for i in `printf '%s\n' "${SRCDIR}"*.c | ${sort}`; do
3307       i=`basename "${i}" .c`
3308       if [ "${i}" = privsep ]; then
3309          continue
3310       fi
3311       objlist="${objlist} ${i}.o"
3312       srclist="${srclist} \$(SRCDIR)${i}.c"
3313       printf '%s: %s\n\t$(ECHO_CC)$(CC) $(CFLAGS) $(INCS) -c %s\n' \
3314          "${i}.o" "\$(SRCDIR)${i}.c" "\$(SRCDIR)${i}.c" >> ${mk}
3315    done
3316    printf '\nAMALGAM_TARGET =\nAMALGAM_DEP =\n' >> ${mk}
3317 else
3318    printf '%s:\n\t$(ECHO_CC)$(CC) $(CFLAGS) $(INCS) -c $(SRCDIR)%s\n' \
3319       "main.o" "main.c" >> ${mk}
3320    srclist=main.c objlist=main.o
3321    printf '\nAMALGAM_TARGET = main.o\nAMALGAM_DEP = ' >> ${mk}
3322
3323    printf '\n/* HAVE_AMALGAMATION: include sources */\n' >> ${h}
3324    printf '#elif n_MK_CONFIG_H + 0 == 1\n' >> ${h}
3325    printf '# undef n_MK_CONFIG_H\n' >> ${h}
3326    printf '# define n_MK_CONFIG_H 2\n' >> ${h}
3327    for i in `printf '%s\n' "${SRCDIR}"*.c | ${sort}`; do
3328       i=`basename "${i}"`
3329       if [ "${i}" = main.c ] ||
3330             [ "${i}" = privsep.c ]; then
3331          continue
3332       fi
3333       printf '$(SRCDIR)%s ' "${i}" >> ${mk}
3334       printf '# include "%s%s"\n' "${SRCDIR}" "${i}" >> ${h}
3335    done
3336    echo >> ${mk}
3337 fi
3338 printf 'OBJ_SRC = %s\nOBJ = %s\n' "${srclist}" "${objlist}" >> "${mk}"
3339
3340 printf '#endif /* n_MK_CONFIG_H */\n' >> ${h}
3341
3342 echo >> ${mk}
3343 ${cat} "${SRCDIR}"make-config.in >> ${mk}
3344
3345 ## Finished!
3346
3347 # We have completed the new configuration header.  Check whether *really*
3348 # Do the "second stage configuration changed" detection, exit if nothing to do
3349 if [ -f ${oldh} ]; then
3350    if ${cmp} ${h} ${oldh} >/dev/null 2>&1; then
3351       ${mv} -f ${oldh} ${h}
3352       msg 'Effective configuration is up-to-date'
3353       exit 0
3354    fi
3355    config_updated=1
3356    ${rm} -f ${oldh}
3357    msg 'Effective configuration has been updated..'
3358 fi
3359
3360 if [ -n "${config_updated}" ]; then
3361    msg 'Wiping away old objects and such..'
3362    ( cd .obj; oldmk=`${basename} ${oldmk}`; ${MAKE} -f ${oldmk} clean )
3363 fi
3364
3365 msg ''
3366 while read l; do msg "${l}"; done < ${tmp}
3367
3368 msg 'Setup:'
3369 msg ' . System-wide resource file: %s/%s' "${VAL_SYSCONFDIR}" "${VAL_SYSCONFRC}"
3370 msg ' . bindir: %s' "${VAL_BINDIR}"
3371 if feat_yes DOTLOCK; then
3372    msg ' . libexecdir: %s' "${VAL_LIBEXECDIR}"
3373 fi
3374 msg ' . mandir: %s' "${VAL_MANDIR}"
3375 msg ' . M(ail)T(ransfer)A(gent): %s (argv0: %s)' "${VAL_MTA}" "${VAL_MTA_ARGV0}"
3376 msg ' . $MAIL spool directory: %s' "${VAL_MAIL}"
3377
3378 msg ''
3379 if [ -n "${have_fnmatch}" ] && [ -n "${have_fchdir}" ]; then
3380    exit 0
3381 fi
3382 msg 'Remarks:'
3383 if [ -z "${have_fnmatch}" ]; then
3384    msg ' . The function fnmatch(3) could not be found.'
3385    msg '   Filename patterns like wildcard are not supported on your system'
3386 fi
3387 if [ -z "${have_fchdir}" ]; then
3388    msg ' . The function fchdir(2) could not be found.'
3389    msg '   We will use chdir(2) instead.'
3390    msg '   This is a problem only if the current working directory is changed'
3391    msg '   while this program is inside of it'
3392 fi
3393 msg ''
3394
3395 # s-it-mode