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    SOCKETS='Network support' \
  24       SSL='SSL/TLS (OpenSSL / LibreSSL)' \
  25          SSL_ALL_ALGORITHMS='Support of all digest and cipher algorithms' \
  26       SMTP='Simple Mail Transfer Protocol client' \
  27       POP3='Post Office Protocol Version 3 client' \
  28       IMAP='IMAP v4r1 client' \
  29       GSSAPI='Generic Security Service authentication' \
  30       NETRC='.netrc file support' \
  31       AGENT='-' \
  32       MD5='MD5 message digest (APOP, CRAM-MD5)' \
  33    IDNA='Internationalized Domain Names for Applications (encode only)' \
  34    IMAP_SEARCH='IMAP-style search expressions' \
  35    REGEX='Regular expressions' \
  36    MLE='Mailx Line Editor' \
  37       HISTORY='Line editor history management' \
  38       KEY_BINDINGS='Configurable key bindings' \
  39    TERMCAP='Terminal capability queries (termcap(5))' \
  40       TERMCAP_VIA_TERMINFO='Terminal capability queries use terminfo(5)' \
  41    ERRORS='Log message ring' \
  42    SPAM_SPAMC='Spam management via spamc(1) of spamassassin(1)' \
  43    SPAM_SPAMD='-' \
  44    SPAM_FILTER='Freely configurable *spam-filter-..*s' \
  45    DOCSTRINGS='Command documentation help strings' \
  46    UISTRINGS='User interface and error message strings' \
  47    QUOTE_FOLD='Extended *quote-fold*ing' \
  48    FILTER_HTML_TAGSOUP='Simple built-in HTML-to-text display filter' \
  49    COLOUR='Coloured message display' \
  50    DOTLOCK='Dotlock files and privilege-separated dotlock program' \
  51 "
  52
  53 # Options which are automatically deduced from host environment, i.e., these
  54 # need special treatment all around here to warp from/to OPT_ stuff
  55 # setlocale, C90AMEND1, NL_LANGINFO, wcwidth
  56 XOPTIONS_DETECT="\
  57    LOCALES='Locale support - printable characters etc. depend on environment' \
  58    MULTIBYTE_CHARSETS='Multibyte character sets' \
  59    TERMINAL_CHARSET='Automatic detection of terminal character set' \
  60    WIDE_GLYPHS='Wide glyph support' \
  61 "
  62
  63 # Rather special options, for custom building, or which always exist.
  64 # Mostly for generating the visual overview and the *features* string
  65 XOPTIONS_XTRA="\
  66    MIME='Multipurpose Internet Mail Extensions' \
  67    SMIME='S/MIME message signing, verification, en- and decryption' \
  68    CROSS_BUILD='Cross-compilation: trust any detected environment' \
  69    DEBUG='Debug enabled binary, not for end-users: THANKS!' \
  70    DEVEL='Computers do not blunder' \
  71 "
  72
  73 # To avoid too many recompilations we use a two-stage "configuration changed"
  74 # detection, the first uses mk-config.lst, which only goes for actual user
  75 # config settings etc. the second uses mk-config.h, which thus includes the
  76 # things we have truly detected.  This does not work well for multiple choice
  77 # values of which only one will be really used, so those user wishes may not be
  78 # placed in the header, only the really detected one (but that has to!).
  79 # Used for grep(1), for portability assume fixed matching only.
  80 H_BLACKLIST='-e VAL_RANDOM -e VAL_IDNA'
  81
  82 # The problem is that we don't have any tools we can use right now, so
  83 # encapsulate stuff in functions which get called in right order later on
  84
  85 option_reset() {
  86    set -- ${OPTIONS}
  87    for i
  88    do
  89       eval OPT_${i}=0
  90    done
  91 }
  92
  93 option_maximal() {
  94    set -- ${OPTIONS}
  95    for i
  96    do
  97       eval OPT_${i}=1
  98    done
  99    OPT_DOTLOCK=require OPT_ICONV=require OPT_REGEX=require
 100 }
 101
 102 option_setup() {
 103    option_parse OPTIONS_DETECT "${XOPTIONS_DETECT}"
 104    option_parse OPTIONS "${XOPTIONS}"
 105    option_parse OPTIONS_XTRA "${XOPTIONS_XTRA}"
 106    OPT_MIME=1
 107
 108    # Predefined CONFIG= urations take precedence over anything else
 109    if [ -n "${CONFIG}" ]; then
 110       option_reset
 111       case "${CONFIG}" in
 112       [nN][uU][lL][lL])
 113          ;;
 114       [nN][uU][lL][lL][iI])
 115          OPT_ICONV=require
 116          OPT_UISTRINGS=1
 117          ;;
 118       [mM][iI][nN][iI][mM][aA][lL])
 119          OPT_DOTLOCK=require OPT_ICONV=require OPT_REGEX=require
 120          OPT_COLOUR=1
 121          OPT_DOCSTRINGS=1
 122          OPT_UISTRINGS=1
 123          OPT_ERRORS=1
 124          OPT_IDNA=1
 125          OPT_MLE=1
 126             OPT_HISTORY=1 OPT_KEY_BINDINGS=1
 127          OPT_SPAM_FILTER=1
 128          ;;
 129       [nN][eE][tT][sS][eE][nN][dD])
 130          OPT_DOTLOCK=require OPT_ICONV=require OPT_REGEX=require
 131          OPT_SOCKETS=require
 132             OPT_SSL=require
 133             OPT_SMTP=require
 134             OPT_GSSAPI=1 OPT_NETRC=1
 135                OPT_AGENT=1
 136          OPT_COLOUR=1
 137          OPT_DOCSTRINGS=1
 138          OPT_UISTRINGS=1
 139          OPT_ERRORS=1
 140          OPT_IDNA=1
 141          OPT_MLE=1
 142             OPT_HISTORY=1 OPT_KEY_BINDINGS=1
 143          OPT_SPAM_FILTER=1
 144          ;;
 145       [mM][aA][xX][iI][mM][aA][lL])
 146          option_maximal
 147          ;;
 148       [dD][eE][vV][eE][lL])
 149          option_maximal
 150          OPT_DEVEL=1 OPT_DEBUG=1 OPT_NYD2=1
 151          ;;
 152       [oO][dD][eE][vV][eE][lL])
 153          option_maximal
 154          OPT_DEVEL=1
 155          ;;
 156       *)
 157          echo >&2 "Unknown CONFIG= setting: ${CONFIG}"
 158          echo >&2 '   NULL, NULLI, MINIMAL, NETSEND, MAXIMAL'
 159          exit 1
 160          ;;
 161       esac
 162       msg_nonl "CONFIG=${CONFIG} ... "
 163    fi
 164 }
 165
 166 # Inter-relationships XXX sort this!
 167 option_update() {
 168    if feat_no SSL; then
 169       OPT_SSL_ALL_ALGORITHMS=0
 170    fi
 171
 172    if feat_no SMTP && feat_no POP3 && feat_no IMAP; then
 173       OPT_SOCKETS=0
 174    fi
 175    if feat_no SOCKETS; then
 176       if feat_require SMTP; then
 177          msg 'ERROR: need SOCKETS for required feature SMTP'
 178          config_exit 13
 179       fi
 180       if feat_require POP3; then
 181          msg 'ERROR: need SOCKETS for required feature POP3'
 182          config_exit 13
 183       fi
 184       if feat_require IMAP; then
 185          msg 'ERROR: need SOCKETS for required feature IMAP'
 186          config_exit 13
 187       fi
 188       OPT_SSL=0 OPT_SSL_ALL_ALGORITHMS=0
 189       OPT_SMTP=0 OPT_POP3=0 OPT_IMAP=0
 190       OPT_GSSAPI=0 OPT_NETRC=0 OPT_AGENT=0
 191    fi
 192    if feat_no SMTP && feat_no IMAP; then
 193       OPT_GSSAPI=0
 194    fi
 195
 196    if feat_no ICONV; then
 197       if feat_yes IMAP; then
 198          if feat_yes ALWAYS_UNICODE_LOCALE; then
 199             msg 'WARN: no ICONV, keeping IMAP due to ALWAYS_UNICODE_LOCALE!'
 200          elif feat_require IMAP; then
 201             msg 'ERROR: need ICONV for required feature IMAP'
 202             config_exit 13
 203          else
 204             msg 'ERROR: disabling IMAP due to missing ICONV'
 205             OPT_IMAP=0
 206          fi
 207       fi
 208
 209       if feat_yes IDNA; then
 210          if feat_require IDNA; then
 211             msg 'ERROR: need ICONV for required feature IDNA'
 212             config_exit 13
 213          fi
 214          msg 'ERROR: disabling IDNA due to missing ICONV'
 215          OPT_IDNA=0
 216       fi
 217    fi
 218
 219    if feat_no MLE; then
 220       OPT_HISTORY=0 OPT_KEY_BINDINGS=0
 221    fi
 222
 223    # If we don't need MD5 leave it alone
 224    if feat_no SOCKETS; then
 225       OPT_MD5=0
 226    fi
 227
 228    if feat_no TERMCAP; then
 229       OPT_TERMCAP_VIA_TERMINFO=0
 230    fi
 231
 232    if feat_yes DEVEL; then
 233       OPT_DEBUG=1
 234    fi
 235 }
 236
 237 rc=./make.rc
 238 lst=.obj/mk-config.lst
 239 ev=.obj/mk-config.ev
 240 h=.obj/mk-config.h h_name=mk-config.h
 241 mk=.obj/mk-config.mk
 242
 243 newlst=.obj/mk-nconfig.lst
 244 newmk=.obj/mk-nconfig.mk
 245 oldmk=.obj/mk-oconfig.mk
 246 newev=.obj/mk-nconfig.ev
 247 newh=.obj/mk-nconfig.h
 248 oldh=.obj/mk-oconfig.h
 249 tmp0=.obj/___tmp
 250 tmp=${tmp0}1$$
 251 tmp2=${tmp0}2$$
 252
 253 ##  --  >8  - << OPTIONS | OS/CC >> -  8<  --  ##
 254
 255 # Note that potential duplicates in PATH, C_INCLUDE_PATH etc. will be cleaned
 256 # via path_check() later on once possible
 257
 258 # TODO cc_maxopt is brute simple, we should compile test program and dig real
 259 # compiler versions for known compilers, then be more specific
 260 [ -n "${cc_maxopt}" ] || cc_maxopt=100
 261 #cc_force_no_stackprot=
 262 #ld_need_R_flags=
 263 #ld_no_bind_now=
 264 #ld_rpath_not_runpath=
 265
 266 _CFLAGS= _LDFLAGS=
 267
 268 os_early_setup() {
 269    # We don't "have any utility" (see make.rc)
 270    [ -n "${OS}" ] && [ -n "${OSENV}" ] && [ -n "${OSFULLSPEC}" ] ||
 271       thecmd_testandset_fail uname uname
 272
 273    [ -n "${OS}" ] || OS=`${uname} -s`
 274    export OS
 275
 276    if [ ${OS} = SunOS ]; then
 277       # According to standards(5), this is what we need to do
 278       if [ -d /usr/xpg4 ]; then :; else
 279          msg 'ERROR: On SunOS / Solaris we need /usr/xpg4 environment!  Sorry.'
 280          config_exit 1
 281       fi
 282       PATH="/usr/xpg4/bin:/usr/ccs/bin:/usr/bin:${PATH}"
 283       [ -d /usr/xpg6 ] && PATH="/usr/xpg6/bin:${PATH}"
 284       export PATH
 285    fi
 286 }
 287
 288 os_setup() {
 289    OS=`echo ${OS} | ${tr} '[A-Z]' '[a-z]'`
 290    msg 'Operating system is %s' "${OS}"
 291
 292    # OSENV ends up in *build-osenv*
 293    # OSFULLSPEC is used to recognize changes (i.e., machine type, updates
 294    # etc.), it is not baked into the binary
 295    [ -n "${OSENV}" ] || OSENV=`${uname} -sm`
 296    [ -n "${OSFULLSPEC}" ] || OSFULLSPEC=`${uname} -a`
 297
 298    if [ ${OS} = darwin ]; then
 299       msg ' . have special Darwin environmental addons...'
 300       LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:${DYLD_LIBRARY_PATH}
 301    elif [ ${OS} = sunos ]; then
 302       msg ' . have special SunOS / Solaris "setup" rules ...'
 303       _os_setup_sunos
 304    elif [ ${OS} = unixware ]; then
 305       if feat_yes AUTOCC && acmd_set CC cc; then
 306          msg ' . have special UnixWare environmental rules ...'
 307          feat_yes DEBUG && _CFLAGS='-v -Xa -g' || _CFLAGS='-Xa -O'
 308
 309          CFLAGS="${_CFLAGS} ${EXTRA_CFLAGS}"
 310          LDFLAGS="${_LDFLAGS} ${EXTRA_LDFLAGS}"
 311          export CC CFLAGS LDFLAGS
 312          OPT_AUTOCC=0 ld_need_R_flags=-R
 313       fi
 314    elif [ -n "${VERBOSE}" ]; then
 315       msg ' . no special treatment for this system necessary or known'
 316    fi
 317
 318    # Sledgehammer: better set _GNU_SOURCE
 319    # And in general: oh, boy!
 320    OS_DEFINES="${OS_DEFINES}#define _GNU_SOURCE\n"
 321    #OS_DEFINES="${OS_DEFINES}#define _POSIX_C_SOURCE 200809L\n"
 322    #OS_DEFINES="${OS_DEFINES}#define _XOPEN_SOURCE 700\n"
 323    #[ ${OS} = darwin ] && OS_DEFINES="${OS_DEFINES}#define _DARWIN_C_SOURCE\n"
 324
 325    # On pkgsrc(7) systems automatically add /usr/pkg/*
 326    if [ -d /usr/pkg ] && feat_yes USE_PKGSYS; then
 327       msg ' . found pkgsrc(7), merging C_INCLUDE_PATH and LD_LIBRARY_PATH'
 328       C_INCLUDE_PATH=/usr/pkg/include:${C_INCLUDE_PATH}
 329       LD_LIBRARY_PATH=/usr/pkg/lib:${LD_LIBRARY_PATH}
 330       ld_rpath_not_runpath=1
 331    fi
 332 }
 333
 334 _os_setup_sunos() {
 335    C_INCLUDE_PATH=/usr/xpg4/include:${C_INCLUDE_PATH}
 336    LD_LIBRARY_PATH=/usr/xpg4/lib:${LD_LIBRARY_PATH}
 337
 338    # Include packages
 339    if [ -d /opt/csw ] && feat_yes USE_PKGSYS; then
 340       msg ' . found OpenCSW PKGSYS, merging C_INCLUDE_PATH and LD_LIBRARY_PATH'
 341       C_INCLUDE_PATH=/opt/csw/include:${C_INCLUDE_PATH}
 342       LD_LIBRARY_PATH=/opt/csw/lib:${LD_LIBRARY_PATH}
 343       ld_no_bind_now=1 ld_rpath_not_runpath=1
 344    fi
 345    if [ -d /opt/schily ] && feat_yes USE_PKGSYS; then
 346       msg ' . found Schily PKGSYS, merging C_INCLUDE_PATH and LD_LIBRARY_PATH'
 347       C_INCLUDE_PATH=/opt/schily/include:${C_INCLUDE_PATH}
 348       LD_LIBRARY_PATH=/opt/schily/lib:${LD_LIBRARY_PATH}
 349       ld_no_bind_now=1 ld_rpath_not_runpath=1
 350    fi
 351
 352    OS_DEFINES="${OS_DEFINES}#define __EXTENSIONS__\n"
 353    #OS_DEFINES="${OS_DEFINES}#define _POSIX_C_SOURCE 200112L\n"
 354
 355    [ -n "${cksum}" ] || cksum=/opt/csw/gnu/cksum
 356    if [ -x "${cksum}" ]; then :; else
 357       msg 'ERROR: Not an executable program: %s' "${cksum}"
 358       msg 'ERROR:   We need a CRC-32 cksum(1), as specified in POSIX.'
 359       msg 'ERROR:   However, we do so only for tests.'
 360       msg 'ERROR:   If that is ok, set "cksum=/usr/bin/true", then rerun'
 361       config_exit 1
 362    fi
 363
 364    if feat_yes AUTOCC; then
 365       if acmd_set CC cc; then
 366          feat_yes DEBUG && _CFLAGS="-v -Xa -g" || _CFLAGS="-Xa -O"
 367
 368          CFLAGS="${_CFLAGS} ${EXTRA_CFLAGS}"
 369          LDFLAGS="${_LDFLAGS} ${EXTRA_LDFLAGS}"
 370          export CC CFLAGS LDFLAGS
 371          OPT_AUTOCC=0 ld_need_R_flags=-R
 372       else
 373          cc_maxopt=2 cc_force_no_stackprot=1
 374       fi
 375    fi
 376 }
 377
 378 # Check out compiler ($CC) and -flags ($CFLAGS)
 379 cc_setup() {
 380    # Even though it belongs into cc_flags we will try to compile and link
 381    # something, so ensure we have a clean state regarding CFLAGS/LDFLAGS or
 382    # EXTRA_CFLAGS/EXTRA_LDFLAGS
 383    if feat_no AUTOCC; then
 384       _cc_default
 385       # Ensure those don't do any harm
 386       EXTRA_CFLAGS= EXTRA_LDFLAGS=
 387       export EXTRA_CFLAGS EXTRA_LDFLAGS
 388       return
 389    else
 390       CFLAGS= LDFLAGS=
 391       export CFLAGS LDFLAGS
 392    fi
 393
 394    [ -n "${CC}" ] && { _cc_default; return; }
 395
 396    msg_nonl 'Searching for a usable C compiler .. $CC='
 397    if acmd_set CC clang || acmd_set CC gcc ||
 398          acmd_set CC tcc || acmd_set CC pcc ||
 399          acmd_set CC c89 || acmd_set CC c99; then
 400       :
 401    else
 402       msg 'boing booom tschak'
 403       msg 'ERROR: I cannot find a compiler!'
 404       msg ' Neither of clang(1), gcc(1), tcc(1), pcc(1), c89(1) and c99(1).'
 405       msg ' Please set ${CC} environment variable, maybe ${CFLAGS}, rerun.'
 406       config_exit 1
 407    fi
 408    msg '%s' "${CC}"
 409    export CC
 410 }
 411
 412 _cc_default() {
 413    if [ -z "${CC}" ]; then
 414       msg 'To go on like you have chosen, please set $CC, rerun.'
 415       config_exit 1
 416    fi
 417
 418    if [ -z "${VERBOSE}" ] && [ -f ${lst} ] && feat_no DEBUG; then
 419       :
 420    else
 421       msg 'Using C compiler ${CC}=%s' "${CC}"
 422    fi
 423 }
 424
 425 cc_flags() {
 426    if feat_yes AUTOCC; then
 427       if [ -f ${lst} ] && feat_no DEBUG && [ -z "${VERBOSE}" ]; then
 428          cc_check_silent=1
 429          msg 'Detecting ${CFLAGS}/${LDFLAGS} for ${CC}=%s, just a second..' \
 430             "${CC}"
 431       else
 432          cc_check_silent=
 433          msg 'Testing usable ${CFLAGS}/${LDFLAGS} for ${CC}=%s' "${CC}"
 434       fi
 435
 436       i=`echo "${CC}" | ${awk} 'BEGIN{FS="/"}{print $NF}'`
 437       if { echo "${i}" | ${grep} tcc; } >/dev/null 2>&1; then
 438          msg ' . have special tcc(1) environmental rules ...'
 439          _cc_flags_tcc
 440       else
 441          # As of pcc CVS 2016-04-02, stack protection support is announced but
 442          # will break if used on Linux
 443          if { echo "${i}" | ${grep} pcc; } >/dev/null 2>&1; then
 444             cc_force_no_stackprot=1
 445          fi
 446          _cc_flags_generic
 447       fi
 448
 449       feat_no DEBUG && _CFLAGS="-DNDEBUG ${_CFLAGS}"
 450       CFLAGS="${_CFLAGS} ${EXTRA_CFLAGS}"
 451       LDFLAGS="${_LDFLAGS} ${EXTRA_LDFLAGS}"
 452    else
 453       if feat_no DEBUG; then
 454          CFLAGS="-DNDEBUG ${CFLAGS}"
 455       fi
 456    fi
 457    export CFLAGS LDFLAGS
 458 }
 459
 460 _cc_flags_tcc() {
 461    __cflags=${_CFLAGS} __ldflags=${_LDFLAGS}
 462    _CFLAGS= _LDFLAGS=
 463
 464    cc_check -W
 465    cc_check -Wall
 466    cc_check -Wextra
 467    cc_check -pedantic
 468
 469    if feat_yes DEBUG; then
 470       # May have problems to find libtcc cc_check -b
 471       cc_check -g
 472    fi
 473
 474    if ld_check -Wl,-rpath =./ no; then
 475       ld_need_R_flags=-Wl,-rpath=
 476       if [ -z "${ld_rpath_not_runpath}" ]; then
 477          ld_check -Wl,--enable-new-dtags
 478       else
 479          msg ' ! $LD_LIBRARY_PATH adjusted, not trying --enable-new-dtags'
 480       fi
 481       ld_runtime_flags # update!
 482    fi
 483
 484    _CFLAGS="${_CFLAGS} ${__cflags}" _LDFLAGS="${_LDFLAGS} ${__ldflags}"
 485    unset __cflags __ldflags
 486 }
 487
 488 _cc_flags_generic() {
 489    __cflags=${_CFLAGS} __ldflags=${_LDFLAGS}
 490    _CFLAGS= _LDFLAGS=
 491    feat_yes DEVEL && cc_check -std=c89 || cc_check -std=c99
 492
 493    # E.g., valgrind does not work well with high optimization
 494    if [ ${cc_maxopt} -gt 1 ] && feat_yes NOMEMDBG &&
 495          feat_no ASAN_ADDRESS && feat_no ASAN_MEMORY; then
 496       msg ' ! OPT_NOMEMDBG, setting cc_maxopt=1 (-O1)'
 497       cc_maxopt=1
 498    fi
 499    # Check -g first since some others may rely upon -g / optim. level
 500    if feat_yes DEBUG; then
 501       cc_check -O
 502       cc_check -g
 503    elif [ ${cc_maxopt} -gt 2 ] && cc_check -O3; then
 504       :
 505    elif [ ${cc_maxopt} -gt 1 ] && cc_check -O2; then
 506       :
 507    elif [ ${cc_maxopt} -gt 0 ] && cc_check -O1; then
 508       :
 509    else
 510       cc_check -O
 511    fi
 512
 513    if feat_yes AMALGAMATION; then
 514       cc_check -pipe
 515    fi
 516
 517    #if feat_yes DEVEL && cc_check -Weverything; then
 518    #   :
 519    #else
 520       cc_check -W
 521       cc_check -Wall
 522       cc_check -Wextra
 523       cc_check -Wbad-function-cast
 524       cc_check -Wcast-align
 525       cc_check -Wcast-qual
 526       cc_check -Winit-self
 527       cc_check -Wmissing-prototypes
 528       cc_check -Wshadow
 529       cc_check -Wunused
 530       cc_check -Wwrite-strings
 531       cc_check -Wno-long-long
 532    #fi
 533    cc_check -pedantic
 534
 535    if feat_yes AMALGAMATION && feat_no DEVEL; then
 536       cc_check -Wno-unused-function
 537    fi
 538    feat_no DEVEL && cc_check -Wno-unused-result # XXX do right way (pragma too)
 539
 540    cc_check -fno-unwind-tables
 541    cc_check -fno-asynchronous-unwind-tables
 542    cc_check -fstrict-aliasing
 543    if cc_check -fstrict-overflow && feat_yes DEVEL; then
 544       cc_check -Wstrict-overflow=5
 545    fi
 546
 547    if feat_yes DEBUG || feat_yes FORCED_STACKPROT; then
 548       if [ -z "${cc_force_no_stackprot}" ]; then
 549          if cc_check -fstack-protector-strong ||
 550                cc_check -fstack-protector-all; then
 551             cc_check -D_FORTIFY_SOURCE=2
 552          fi
 553       else
 554          msg ' ! Not checking for -fstack-protector compiler option,'
 555          msg ' ! since that caused errors in a "similar" configuration.'
 556          msg ' ! You may turn off OPT_AUTOCC and use your own settings, rerun'
 557       fi
 558    fi
 559
 560    # LD (+ dependend CC)
 561
 562    if feat_yes ASAN_ADDRESS; then
 563       _ccfg=${_CFLAGS}
 564       if cc_check -fsanitize=address && ld_check -fsanitize=address; then
 565          :
 566       else
 567          feat_bail_required ASAN_ADDRESS
 568          _CFLAGS=${_ccfg}
 569       fi
 570    fi
 571
 572    if feat_yes ASAN_MEMORY; then
 573       _ccfg=${_CFLAGS}
 574       if cc_check -fsanitize=memory && ld_check -fsanitize=memory &&
 575             cc_check -fsanitize-memory-track-origins=2 &&
 576             ld_check -fsanitize-memory-track-origins=2; then
 577          :
 578       else
 579          feat_bail_required ASAN_MEMORY
 580          _CFLAGS=${_ccfg}
 581       fi
 582    fi
 583
 584    if feat_yes USAN; then
 585       _ccfg=${_CFLAGS}
 586       if cc_check -fsanitize=undefined && ld_check -fsanitize=undefined; then
 587          :
 588       else
 589          feat_bail_required USAN
 590          _CFLAGS=${_ccfg}
 591       fi
 592    fi
 593
 594    ld_check -Wl,-z,relro
 595    if [ -z "${ld_no_bind_now}" ]; then
 596       ld_check -Wl,-z,now
 597    else
 598       msg ' ! $LD_LIBRARY_PATH adjusted, not trying -Wl,-z,now'
 599    fi
 600    ld_check -Wl,-z,noexecstack
 601    if ld_check -Wl,-rpath =./ no; then
 602       ld_need_R_flags=-Wl,-rpath=
 603       # Choose DT_RUNPATH (after $LD_LIBRARY_PATH) over DT_RPATH (before)
 604       if [ -z "${ld_rpath_not_runpath}" ]; then
 605          ld_check -Wl,--enable-new-dtags
 606       else
 607          msg ' ! $LD_LIBRARY_PATH adjusted, not trying --enable-new-dtags'
 608       fi
 609       ld_runtime_flags # update!
 610    elif ld_check -Wl,-R ./ no; then
 611       ld_need_R_flags=-Wl,-R
 612       if [ -z "${ld_rpath_not_runpath}" ]; then
 613          ld_check -Wl,--enable-new-dtags
 614       else
 615          msg ' ! $LD_LIBRARY_PATH adjusted, not trying --enable-new-dtags'
 616       fi
 617       ld_runtime_flags # update!
 618    fi
 619
 620    # Address randomization
 621    _ccfg=${_CFLAGS}
 622    if cc_check -fPIE || cc_check -fpie; then
 623       ld_check -pie || _CFLAGS=${_ccfg}
 624    fi
 625    unset _ccfg
 626
 627    _CFLAGS="${_CFLAGS} ${__cflags}" _LDFLAGS="${_LDFLAGS} ${__ldflags}"
 628    unset __cflags __ldflags
 629 }
 630
 631 ##  --  >8  - <<OS/CC | SUPPORT FUNS>> -  8<  --  ##
 632
 633 ## Notes:
 634 ## - Heirloom sh(1) (and same origin) have _sometimes_ problems with ': >'
 635 ##   redirection, so use "printf '' >" instead
 636
 637 ## Very first: we undergo several states regarding I/O redirection etc.,
 638 ## but need to deal with option updates from within all.  Since all the
 639 ## option stuff should be above the scissor line, define utility functions
 640 ## and redefine them as necessary.
 641 ## And, since we have those functions, simply use them for whatever
 642
 643 t1=ten10one1ten10one1
 644 if ( [ ${t1##*ten10} = one1 ] && [ ${t1#*ten10} = one1ten10one1 ] &&
 645       [ ${t1%%one1*} = ten10 ] && [ ${t1%one1*} = ten10one1ten10 ]
 646       ) > /dev/null 2>&1; then
 647    good_shell=1
 648 else
 649    unset good_shell
 650 fi
 651 unset t1
 652
 653 ( set -o noglob ) >/dev/null 2>&1 && noglob_shell=1 || unset noglob_shell
 654
 655 config_exit() {
 656    exit ${1}
 657 }
 658
 659 # which(1) not standardized, command(1) -v may return non-executable: unroll!
 660 acmd_test() { __acmd "${1}" 1 0 0; }
 661 acmd_test_fail() { __acmd "${1}" 1 1 0; }
 662 acmd_set() { __acmd "${2}" 0 0 0 "${1}"; }
 663 acmd_set_fail() { __acmd "${2}" 0 1 0 "${1}"; }
 664 acmd_testandset() { __acmd "${2}" 1 0 0 "${1}"; }
 665 acmd_testandset_fail() { __acmd "${2}" 1 1 0 "${1}"; }
 666 thecmd_set() { __acmd "${2}" 0 0 1 "${1}"; }
 667 thecmd_set_fail() { __acmd "${2}" 0 1 1 "${1}"; }
 668 thecmd_testandset() { __acmd "${2}" 1 0 1 "${1}"; }
 669 thecmd_testandset_fail() { __acmd "${2}" 1 1 1 "${1}"; }
 670 __acmd() {
 671    pname=${1} dotest=${2} dofail=${3} verbok=${4} varname=${5}
 672
 673    if [ "${dotest}" -ne 0 ]; then
 674       eval dotest=\$${varname}
 675       if [ -n "${dotest}" ]; then
 676          [ -n "${VERBOSE}" ] && [ ${verbok} -ne 0 ] &&
 677             msg ' . ${%s} ... %s' "${pname}" "${dotest}"
 678          return 0
 679       fi
 680    fi
 681
 682    oifs=${IFS} IFS=:
 683    [ -n "${noglob_shell}" ] && set -o noglob
 684    set -- ${PATH}
 685    [ -n "${noglob_shell}" ] && set +o noglob
 686    IFS=${oifs}
 687    for path
 688    do
 689       if [ -z "${path}" ] || [ "${path}" = . ]; then
 690          if [ -d "${PWD}" ]; then
 691             path=${PWD}
 692          else
 693             path=.
 694          fi
 695       fi
 696       if [ -f "${path}/${pname}" ] && [ -x "${path}/${pname}" ]; then
 697          [ -n "${VERBOSE}" ] && [ ${verbok} -ne 0 ] &&
 698             msg ' . ${%s} ... %s' "${pname}" "${path}/${pname}"
 699          [ -n "${varname}" ] && eval ${varname}="${path}/${pname}"
 700          return 0
 701       fi
 702    done
 703
 704    # We may have no builtin string functions, we yet have no programs we can
 705    # use, try to access once from the root, assuming it is an absolute path if
 706    # that finds the executable
 707    if ( cd && [ -f "${pname}" ] && [ -x "${pname}" ] ); then
 708      [ -n "${VERBOSE}" ] && [ ${verbok} -ne 0 ] &&
 709             msg ' . ${%s} ... %s' "${pname}" "${pname}"
 710       [ -n "${varname}" ] && eval ${varname}="${pname}"
 711       return 0
 712    fi
 713
 714    [ ${dofail} -eq 0 ] && return 1
 715    msg 'ERROR: no trace of utility '"${pname}"
 716    exit 1
 717 }
 718
 719 msg() {
 720    fmt=${1}
 721    shift
 722    printf >&2 -- "${fmt}\\n" "${@}"
 723 }
 724
 725 msg_nonl() {
 726    fmt=${1}
 727    shift
 728    printf >&2 -- "${fmt}" "${@}"
 729 }
 730
 731 # Our feature check environment
 732 feat_val_no() {
 733    [ "x${1}" = x0 ] || [ "x${1}" = xn ] ||
 734    [ "x${1}" = xfalse ] || [ "x${1}" = xno ] || [ "x${1}" = xoff ]
 735 }
 736
 737 feat_val_yes() {
 738    [ "x${1}" = x1 ] || [ "x${1}" = xy ] ||
 739    [ "x${1}" = xtrue ] || [ "x${1}" = xyes ] || [ "x${1}" = xon ] ||
 740          [ "x${1}" = xrequire ]
 741 }
 742
 743 feat_val_require() {
 744    [ "x${1}" = xrequire ]
 745 }
 746
 747 _feat_check() {
 748    eval i=\$OPT_${1}
 749    i="`echo ${i} | ${tr} '[A-Z]' '[a-z]'`"
 750    if feat_val_no "${i}"; then
 751       return 1
 752    elif feat_val_yes "${i}"; then
 753       return 0
 754    else
 755       msg "ERROR: %s: 0/n/false/no/off or 1/y/true/yes/on/require, got: %s" \
 756          "${1}" "${i}"
 757       config_exit 11
 758    fi
 759 }
 760
 761 feat_yes() {
 762    _feat_check ${1}
 763 }
 764
 765 feat_no() {
 766    _feat_check ${1} && return 1
 767    return 0
 768 }
 769
 770 feat_require() {
 771    eval i=\$OPT_${1}
 772    i="`echo ${i} | ${tr} '[A-Z]' '[a-z]'`"
 773    [ "x${i}" = xrequire ] || [ "x${i}" = xrequired ]
 774 }
 775
 776 feat_bail_required() {
 777    if feat_require ${1}; then
 778       msg 'ERROR: feature OPT_%s is required but not available' "${1}"
 779       config_exit 13
 780    fi
 781    feat_is_unsupported "${1}"
 782 }
 783
 784 feat_is_disabled() {
 785    [ ${#} -eq 1 ] && msg ' .  (disabled: OPT_%s)' "${1}"
 786    echo "/* OPT_${1} -> HAVE_${1} */" >> ${h}
 787 }
 788
 789 feat_is_unsupported() {
 790    msg ' ! NOTICE: unsupported: OPT_%s' "${1}"
 791    echo "/* OPT_${1} -> HAVE_${1} */" >> ${h}
 792    eval OPT_${1}=0
 793    option_update # XXX this is rather useless here (dependency chain..)
 794 }
 795
 796 feat_def() {
 797    if feat_yes ${1}; then
 798       msg ' . %s ... yes' "${1}"
 799       echo '#define HAVE_'${1}'' >> ${h}
 800       return 0
 801    else
 802       feat_is_disabled "${@}"
 803       return 1
 804    fi
 805 }
 806
 807 option_parse() {
 808    # Parse one of our XOPTIONS* in $2 and assign the sh(1) compatible list of
 809    # options, without documentation, to $1
 810    j=\'
 811    i="`${awk} -v input=\"${2}\" '
 812       BEGIN{
 813          for(i = 0;;){
 814             voff = match(input, /[[:alnum:]_]+(='${j}'[^'${j}']+)?/)
 815             if(voff == 0)
 816                break
 817             v = substr(input, voff, RLENGTH)
 818             input = substr(input, voff + RLENGTH)
 819             doff = index(v, "=")
 820             if(doff > 0){
 821                d = substr(v, doff + 2, length(v) - doff - 1)
 822                v = substr(v, 1, doff - 1)
 823             }
 824             print v
 825          }
 826       }
 827       '`"
 828    eval ${1}=\"${i}\"
 829 }
 830
 831 option_doc_of() {
 832    # Return the "documentation string" for option $1, itself if none such
 833    j=\'
 834    ${awk} -v want="${1}" \
 835       -v input="${XOPTIONS_DETECT}${XOPTIONS}${XOPTIONS_XTRA}" '
 836    BEGIN{
 837       for(;;){
 838          voff = match(input, /[[:alnum:]_]+(='${j}'[^'${j}']+)?/)
 839          if(voff == 0)
 840             break
 841          v = substr(input, voff, RLENGTH)
 842          input = substr(input, voff + RLENGTH)
 843          doff = index(v, "=")
 844          if(doff > 0){
 845             d = substr(v, doff + 2, length(v) - doff - 1)
 846             v = substr(v, 1, doff - 1)
 847          }else
 848             d = v
 849          if(v == want){
 850             if(d != "-")
 851                print d
 852             exit
 853          }
 854       }
 855    }
 856    '
 857 }
 858
 859 option_join_rc() {
 860    # Join the values from make.rc into what currently is defined, not
 861    # overwriting yet existing settings
 862    ${rm} -f ${tmp}
 863    # We want read(1) to perform reverse solidus escaping in order to be able to
 864    # use multiline values in make.rc; the resulting sh(1)/sed(1) code was very
 865    # slow in VMs (see [fa2e248]), Aharon Robbins suggested the following
 866    < ${rc} ${awk} 'BEGIN{line = ""}{
 867       gsub(/^[[:space:]]+/, "", $0)
 868       gsub(/[[:space:]]+$/, "", $0)
 869       if(gsub(/\\$/, "", $0)){
 870          line = line $0
 871          next
 872       }else
 873          line = line $0
 874       if(index(line, "#") == 1){
 875          line = ""
 876       }else if(length(line)){
 877          print line
 878          line = ""
 879       }
 880    }' |
 881    while read line; do
 882       if [ -n "${good_shell}" ]; then
 883          i=${line%%=*}
 884       else
 885          i=`${awk} -v LINE="${line}" 'BEGIN{
 886             gsub(/=.*$/, "", LINE)
 887             print LINE
 888          }'`
 889       fi
 890       if [ "${i}" = "${line}" ]; then
 891          msg 'ERROR: invalid syntax in: %s' "${line}"
 892          continue
 893       fi
 894
 895       eval j="\$${i}" jx="\${${i}+x}"
 896       if [ -n "${j}" ] || [ "${jx}" = x ]; then
 897          : # Yet present
 898       else
 899          j=`${awk} -v LINE="${line}" 'BEGIN{
 900             gsub(/^[^=]*=/, "", LINE)
 901             gsub(/^\"*/, "", LINE)
 902             gsub(/\"*$/, "", LINE)
 903             print LINE
 904          }'`
 905       fi
 906       [ "${i}" = "DESTDIR" ] && continue
 907       echo "${i}=\"${j}\""
 908    done > ${tmp}
 909    # Reread the mixed version right now
 910    . ./${tmp}
 911 }
 912
 913 option_evaluate() {
 914    # Expand the option values, which may contain shell snippets
 915    ${rm} -f ${newlst} ${newmk} ${newh}
 916    exec 5<&0 6>&1 <${tmp} >${newlst}
 917    while read line; do
 918       z=
 919       if [ -n "${good_shell}" ]; then
 920          i=${line%%=*}
 921          [ "${i}" != "${i#OPT_}" ] && z=1
 922       else
 923          i=`${awk} -v LINE="${line}" 'BEGIN{
 924             gsub(/=.*$/, "", LINE);\
 925             print LINE
 926          }'`
 927          if echo "${i}" | ${grep} '^OPT_' >/dev/null 2>&1; then
 928             z=1
 929          fi
 930       fi
 931
 932       eval j=\$${i}
 933       if [ -n "${z}" ]; then
 934          j="`echo ${j} | ${tr} '[A-Z]' '[a-z]'`"
 935          if [ -z "${j}" ] || feat_val_no "${j}"; then
 936             j=0
 937             printf "   /* #undef ${i} */\n" >> ${newh}
 938          elif feat_val_yes "${j}"; then
 939             if feat_val_require "${j}"; then
 940                j=require
 941             else
 942                j=1
 943             fi
 944             printf "   /* #define ${i} */\n" >> ${newh}
 945          else
 946             msg 'ERROR: cannot parse <%s>' "${line}"
 947             config_exit 1
 948          fi
 949       elif { echo ${i} | ${grep} ${H_BLACKLIST} >/dev/null 2>&1; }; then
 950          :
 951       else
 952          printf "#define ${i} \"${j}\"\n" >> ${newh}
 953       fi
 954       printf "${i} = ${j}\n" >> ${newmk}
 955       printf "${i}=${j}\n"
 956       eval "${i}=\"${j}\""
 957    done
 958    exec 0<&5 1>&6 5<&- 6<&-
 959 }
 960
 961 val_allof() {
 962    eval __expo__=\$${1}
 963    ${awk} -v HEAP="${2}" -v USER="${__expo__}" '
 964       BEGIN{
 965          i = split(HEAP, ha, /[, ]/)
 966          if((j = split(USER, ua, /[, ]/)) == 0)
 967             exit
 968          for(; j != 0; --j){
 969             us = tolower(ua[j])
 970             if(us == "all" || us == "any")
 971                continue
 972             ok = 0
 973             for(ii = i; ii != 0; --ii)
 974                if(tolower(ha[ii]) == us){
 975                   ok = 1
 976                   break
 977                }
 978             if(!ok)
 979                exit 1
 980          }
 981       }
 982    '
 983    __rv__=${?}
 984    [ ${__rv__} -ne 0 ] && return ${__rv__}
 985
 986     if ${awk} -v USER="${__expo__}" '
 987             BEGIN{
 988                if((j = split(USER, ua, /[, ]/)) == 0)
 989                   exit
 990                for(; j != 0; --j){
 991                   us = tolower(ua[j])
 992                   if(us == "all" || us == "any")
 993                      exit 0
 994                }
 995                exit 1
 996             }
 997          '; then
 998       eval "${1}"=\"${2}\"
 999    else
1000       # Enfore lowercase also in otherwise unchanged user value..
1001       eval "${1}"=\""`echo ${__expo__} | ${tr} '[A-Z]_' '[a-z]-'`"\"
1002    fi
1003    return 0
1004 }
1005
1006 path_check() {
1007    # "path_check VARNAME" or "path_check VARNAME FLAG VARNAME"
1008    varname=${1} addflag=${2} flagvarname=${3}
1009    j=${IFS}
1010    IFS=:
1011    [ -n "${noglob_shell}" ] && set -o noglob
1012    eval "set -- \$${1}"
1013    [ -n "${noglob_shell}" ] && set +o noglob
1014    IFS=${j}
1015    j= k= y= z=
1016    for i
1017    do
1018       [ -z "${i}" ] && continue
1019       [ -d "${i}" ] || continue
1020       if [ -n "${j}" ]; then
1021          if { z=${y}; echo "${z}"; } | ${grep} ":${i}:" >/dev/null 2>&1; then
1022             :
1023          else
1024             y="${y} :${i}:"
1025             j="${j}:${i}"
1026             # But do not link any fakeroot path into our binaries!
1027             if [ -n "${addflag}" ]; then
1028                case "${i}" in *fakeroot*) continue;; esac
1029                k="${k} ${addflag}${i}"
1030             fi
1031          fi
1032       else
1033          y=" :${i}:"
1034          j="${i}"
1035          # But do not link any fakeroot path into our binaries!
1036          if [ -n "${addflag}" ]; then
1037             case "${i}" in *fakeroot*) continue;; esac
1038             k="${k} ${addflag}${i}"
1039          fi
1040       fi
1041    done
1042    eval "${varname}=\"${j}\""
1043    [ -n "${addflag}" ] && eval "${flagvarname}=\"${k}\""
1044    unset varname
1045 }
1046
1047 ld_runtime_flags() {
1048    if [ -n "${ld_need_R_flags}" ]; then
1049       i=${IFS}
1050       IFS=:
1051       set -- ${LD_LIBRARY_PATH}
1052       IFS=${i}
1053       for i
1054       do
1055          # But do not link any fakeroot path into our binaries!
1056          case "${i}" in *fakeroot*) continue;; esac
1057          LDFLAGS="${LDFLAGS} ${ld_need_R_flags}${i}"
1058          _LDFLAGS="${_LDFLAGS} ${ld_need_R_flags}${i}"
1059       done
1060       export LDFLAGS
1061    fi
1062    # Disable it for a possible second run.
1063    ld_need_R_flags=
1064 }
1065
1066 cc_check() {
1067    [ -n "${cc_check_silent}" ] || msg_nonl ' . CC %s .. ' "${1}"
1068    if ${CC} ${INCS} \
1069          ${_CFLAGS} ${1} ${EXTRA_CFLAGS} ${_LDFLAGS} ${EXTRA_LDFLAGS} \
1070          -o ${tmp2} ${tmp}.c ${LIBS} >/dev/null 2>&1; then
1071       _CFLAGS="${_CFLAGS} ${1}"
1072       [ -n "${cc_check_silent}" ] || msg 'yes'
1073       return 0
1074    fi
1075    [ -n "${cc_check_silent}" ] || msg 'no'
1076    return 1
1077 }
1078
1079 ld_check() {
1080    # $1=option [$2=option argument] [$3=if set, shall NOT be added to _LDFLAGS]
1081    [ -n "${cc_check_silent}" ] || msg_nonl ' . LD %s .. ' "${1}"
1082    if ${CC} ${INCS} ${_CFLAGS} ${_LDFLAGS} ${1}${2} ${EXTRA_LDFLAGS} \
1083          -o ${tmp2} ${tmp}.c ${LIBS} >/dev/null 2>&1; then
1084       [ -n "${3}" ] || _LDFLAGS="${_LDFLAGS} ${1}"
1085       [ -n "${cc_check_silent}" ] || msg 'yes'
1086       return 0
1087    fi
1088    [ -n "${cc_check_silent}" ] || msg 'no'
1089    return 1
1090 }
1091
1092 dump_test_program=1
1093 _check_preface() {
1094    variable=$1 topic=$2 define=$3
1095
1096    echo '**********'
1097    msg_nonl ' . %s ... ' "${topic}"
1098    #echo "/* checked ${topic} */" >> ${h}
1099    ${rm} -f ${tmp} ${tmp}.o
1100    if [ "${dump_test_program}" = 1 ]; then
1101       echo '*** test program is'
1102       { echo '#include <'"${h_name}"'>'; cat; } | ${tee} ${tmp}.c
1103    else
1104       { echo '#include <'"${h_name}"'>'; cat; } > ${tmp}.c
1105    fi
1106    #echo '*** the preprocessor generates'
1107    #${make} -f ${makefile} ${tmp}.x
1108    #${cat} ${tmp}.x
1109    echo '*** tests results'
1110 }
1111
1112 without_check() {
1113    yesno=$1 variable=$2 topic=$3 define=$4 libs=$5 incs=$6
1114
1115    echo '**********'
1116    msg_nonl ' . %s ... ' "${topic}"
1117
1118    echo '*** enforced unchecked results are'
1119    if feat_val_yes ${yesno}; then
1120       if [ -n "${incs}" ] || [ -n "${libs}" ]; then
1121          echo "*** adding INCS<${incs}> LIBS<${libs}>"
1122          LIBS="${LIBS} ${libs}"
1123          echo "${libs}" >> ${lib}
1124          INCS="${INCS} ${incs}"
1125          echo "${incs}" >> ${inc}
1126       fi
1127       msg 'yes (deduced)'
1128       echo "${define}" >> ${h}
1129       eval have_${variable}=yes
1130       return 0
1131    else
1132       #echo "/* ${define} */" >> ${h}
1133       msg 'no (deduced)'
1134       eval unset have_${variable}
1135       return 1
1136    fi
1137 }
1138
1139 compile_check() {
1140    variable=$1 topic=$2 define=$3
1141
1142    _check_preface "${variable}" "${topic}" "${define}"
1143
1144    if ${make} -f ${makefile} XINCS="${INCS}" \
1145             CFLAGS="${CFLAGS}" LDFLAGS="${LDFLAGS}" ${tmp}.o &&
1146             [ -f ${tmp}.o ]; then
1147       msg 'yes'
1148       echo "${define}" >> ${h}
1149       eval have_${variable}=yes
1150       return 0
1151    else
1152       #echo "/* ${define} */" >> ${h}
1153       msg 'no'
1154       eval unset have_${variable}
1155       return 1
1156    fi
1157 }
1158
1159 _link_mayrun() {
1160    run=$1 variable=$2 topic=$3 define=$4 libs=$5 incs=$6
1161
1162    _check_preface "${variable}" "${topic}" "${define}"
1163
1164    if feat_yes CROSS_BUILD; then
1165       if [ ${run} = 1 ]; then
1166          run=0
1167       fi
1168    fi
1169
1170    if ${make} -f ${makefile} XINCS="${INCS} ${incs}" \
1171             CFLAGS="${CFLAGS}" LDFLAGS="${LDFLAGS}" \
1172             XLIBS="${LIBS} ${libs}" ${tmp} &&
1173          [ -f ${tmp} ] && { [ ${run} -eq 0 ] || ${tmp}; }; then
1174       echo "*** adding INCS<${incs}> LIBS<${libs}>; executed: ${run}"
1175       msg 'yes'
1176       echo "${define}" >> ${h}
1177       LIBS="${LIBS} ${libs}"
1178       echo "${libs}" >> ${lib}
1179       INCS="${INCS} ${incs}"
1180       echo "${incs}" >> ${inc}
1181       eval have_${variable}=yes
1182       return 0
1183    else
1184       msg 'no'
1185       #echo "/* ${define} */" >> ${h}
1186       eval unset have_${variable}
1187       return 1
1188    fi
1189 }
1190
1191 link_check() {
1192    _link_mayrun 0 "${1}" "${2}" "${3}" "${4}" "${5}"
1193 }
1194
1195 run_check() {
1196    _link_mayrun 1 "${1}" "${2}" "${3}" "${4}" "${5}"
1197 }
1198
1199 xrun_check() {
1200    _link_mayrun 2 "${1}" "${2}" "${3}" "${4}" "${5}"
1201 }
1202
1203 squeeze_em() {
1204    < "${1}" > "${2}" ${awk} \
1205    'BEGIN {ORS = " "} /^[^#]/ {print} {next} END {ORS = ""; print "\n"}'
1206 }
1207
1208 ##  --  >8  - <<SUPPORT FUNS | RUNNING>> -  8<  --  ##
1209
1210 # First of all, create new configuration and check whether it changed
1211
1212 if [ -d .obj ] || mkdir .obj; then :; else
1213    msg 'ERROR: cannot create .obj build directory'
1214    exit 1
1215 fi
1216
1217 # Very easy checks for the operating system in order to be able to adjust paths
1218 # or similar very basic things which we need to be able to go at all
1219 os_early_setup
1220
1221 # Check those tools right now that we need before including $rc
1222 msg 'Checking for basic utility set'
1223 thecmd_testandset_fail awk awk
1224 thecmd_testandset_fail rm rm
1225 thecmd_testandset_fail tr tr
1226
1227 # Initialize the option set
1228 msg_nonl 'Setting up configuration options ... '
1229 option_setup
1230 msg 'done'
1231
1232 # Include $rc, but only take from it what wasn't overwritten by the user from
1233 # within the command line or from a chosen fixed CONFIG=
1234 # Note we leave alone the values
1235 trap "exit 1" HUP INT TERM
1236 trap "${rm} -f ${tmp}" EXIT
1237
1238 msg_nonl 'Joining in %s ... ' ${rc}
1239 option_join_rc
1240 msg 'done'
1241
1242 # We need to know about that now, in order to provide utility overwrites etc.
1243 os_setup
1244
1245 msg 'Checking for remaining set of utilities'
1246 thecmd_testandset_fail grep grep
1247
1248 # Before we step ahead with the other utilities perform a path cleanup first.
1249 path_check PATH
1250
1251 # awk(1) above
1252 thecmd_testandset_fail basename basename
1253 thecmd_testandset_fail cat cat
1254 thecmd_testandset_fail chmod chmod
1255 thecmd_testandset_fail cp cp
1256 thecmd_testandset_fail cmp cmp
1257 # grep(1) above
1258 thecmd_testandset_fail mkdir mkdir
1259 thecmd_testandset_fail mv mv
1260 # pwd(1) is needed - either for make-emerge.sh, or for ourselves
1261 [ -n "${CWDDIR}" ] || thecmd_testandset_fail pwd pwd
1262 # rm(1) above
1263 thecmd_testandset_fail sed sed
1264 thecmd_testandset_fail sort sort
1265 thecmd_testandset_fail tee tee
1266 __PATH=${PATH}
1267 thecmd_testandset chown chown ||
1268    PATH="/sbin:${PATH}" thecmd_set chown chown ||
1269    PATH="/usr/sbin:${PATH}" thecmd_set_fail chown chown
1270 PATH=${__PATH}
1271 thecmd_testandset_fail MAKE make
1272 make=${MAKE}
1273 export MAKE
1274 thecmd_testandset strip strip && HAVE_STRIP=1 || HAVE_STRIP=0
1275
1276 # For ./cc-test.sh only
1277 thecmd_testandset_fail cksum cksum
1278
1279 # Now that we have pwd(1), set our build paths unless make-emerge.sh has been
1280 # used; it would have created a makefile with the full paths, then
1281 [ -n "${CWDDIR}" ] || CWDDIR=`${pwd}`/
1282 [ -n "${SRCDIR}" ] || SRCDIR=${CWDDIR}
1283
1284 # Update OPT_ options now, in order to get possible inter-dependencies right
1285 option_update
1286
1287 # (No functions since some shells loose non-exported variables in traps)
1288 trap "trap \"\" HUP INT TERM; exit 1" HUP INT TERM
1289 trap "trap \"\" HUP INT TERM EXIT;\
1290    ${rm} -rf ${newlst} ${tmp0}.* ${tmp0}* \
1291       ${newmk} ${oldmk} ${newev} ${newh} ${oldh}" EXIT
1292
1293 # Our configuration options may at this point still contain shell snippets,
1294 # we need to evaluate them in order to get them expanded, and we need those
1295 # evaluated values not only in our new configuration file, but also at hand..
1296 msg_nonl 'Evaluating all configuration items ... '
1297 option_evaluate
1298 msg 'done'
1299
1300 #
1301 printf "#define VAL_UAGENT \"${VAL_SID}${VAL_MAILX}\"\n" >> ${newh}
1302 printf "VAL_UAGENT = ${VAL_SID}${VAL_MAILX}\n" >> ${newmk}
1303
1304 # The problem now is that the test should be able to run in the users linker
1305 # and path environment, so we need to place the test: rule first, before
1306 # injecting the relevant make variables.  Set up necessary environment
1307 if [ -z "${VERBOSE}" ]; then
1308    printf -- "ECHO_CC = @echo '  'CC \$(@);\n" >> ${newmk}
1309    printf -- "ECHO_LINK = @echo '  'LINK \$(@);\n" >> ${newmk}
1310    printf -- "ECHO_GEN = @echo '  'GEN \$(@);\n" >> ${newmk}
1311    printf -- "ECHO_TEST = @\n" >> ${newmk}
1312    printf -- "ECHO_CMD = @echo '  CMD';\n" >> ${newmk}
1313    printf -- "ECHO_BLOCK_BEGIN = @( \n" >> ${newmk}
1314    printf -- "ECHO_BLOCK_END = ) >/dev/null\n" >> ${newmk}
1315 fi
1316 printf 'test: all\n\t$(ECHO_TEST)%s %scc-test.sh --check-only %s\n' \
1317    "${SHELL}" "${SRCDIR}" "./${VAL_SID}${VAL_MAILX}" >> ${newmk}
1318
1319 # Add the known utility and some other variables
1320 printf "#define VAL_PRIVSEP \"${VAL_SID}${VAL_MAILX}-privsep\"\n" >> ${newh}
1321 printf "VAL_PRIVSEP = \$(VAL_UAGENT)-privsep\n" >> ${newmk}
1322 if feat_yes DOTLOCK; then
1323    printf "OPTIONAL_PRIVSEP = \$(VAL_PRIVSEP)\n" >> ${newmk}
1324 else
1325    printf "OPTIONAL_PRIVSEP =\n" >> ${newmk}
1326 fi
1327
1328 for i in \
1329    CWDDIR SRCDIR \
1330       awk basename cat chmod chown cp cmp grep mkdir mv rm sed sort tee tr \
1331       MAKE MAKEFLAGS make SHELL strip \
1332       cksum; do
1333    eval j=\$${i}
1334    printf -- "${i} = ${j}\n" >> ${newmk}
1335    printf -- "${i}=${j}\n" >> ${newlst}
1336    printf -- "${i}=\"${j}\";export ${i}; " >> ${newev}
1337 done
1338 # Note that makefile reads and eval'uates one line of this file, whereas other
1339 # consumers source it via .(1)
1340 printf "\n" >> ${newev}
1341
1342 # Build a basic set of INCS and LIBS according to user environment.
1343 C_INCLUDE_PATH="${CWDDIR}:${CWDDIR}.obj:${SRCDIR}:${C_INCLUDE_PATH}"
1344 path_check C_INCLUDE_PATH -I _INCS
1345 INCS="${INCS} ${_INCS}"
1346 path_check LD_LIBRARY_PATH -L _LIBS
1347 LIBS="${LIBS} ${_LIBS}"
1348 unset _INCS _LIBS
1349 export C_INCLUDE_PATH LD_LIBRARY_PATH
1350
1351 # Some environments need runtime path flags to be able to go at all
1352 ld_runtime_flags
1353
1354 ## Detect CC, whether we can use it, and possibly which CFLAGS we can use
1355
1356 cc_setup
1357
1358 ${cat} > ${tmp}.c << \!
1359 #include <stdio.h>
1360 #include <string.h>
1361 static void doit(char const *s);
1362 int
1363 main(int argc, char **argv){
1364    (void)argc;
1365    (void)argv;
1366    doit("Hello world");
1367    return 0;
1368 }
1369 static void
1370 doit(char const *s){
1371    char buf[12];
1372    memcpy(buf, s, strlen(s) +1);
1373    puts(s);
1374 }
1375 !
1376
1377 if ${CC} ${INCS} ${CFLAGS} ${EXTRA_CFLAGS} ${LDFLAGS} ${EXTRA_LDFLAGS} \
1378       -o ${tmp2} ${tmp}.c ${LIBS}; then
1379    :
1380 else
1381    msg 'ERROR: i cannot compile a "Hello world" via'
1382    msg '   %s' \
1383    "${CC} ${INCS} ${CFLAGS} ${EXTRA_CFLAGS} ${LDFLAGS} ${EXTRA_LDFLAGS} ${LIBS}"
1384    msg 'ERROR:   Please read INSTALL, rerun'
1385    config_exit 1
1386 fi
1387
1388 # This may also update ld_runtime_flags() (again)
1389 cc_flags
1390
1391 for i in \
1392       INCS LIBS \
1393       ; do
1394    eval j=\$${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}"'"' >> ${h}
1487 echo '#define VAL_BUILD_OSENV "'"${OSENV}"'"' >> ${h}
1488
1489 # Generate n_err_number OS mappings
1490 dump_test_program=0
1491 (
1492    feat_yes DEVEL && NV= || NV=noverbose
1493    SRCDIR="${SRCDIR}" TARGET="${h}" awk="${awk}" \
1494       ${SHELL} "${SRCDIR}"make-errors.sh ${NV} config
1495 ) | xrun_check oserrno 'OS error mapping table generated' || config_exit 1
1496 dump_test_program=1
1497
1498 feat_def ALWAYS_UNICODE_LOCALE
1499 feat_def AMALGAMATION 0
1500 feat_def CROSS_BUILD
1501 feat_def DOCSTRINGS
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 SSL 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 "${have_sockopt}" ] &&
2396    link_check so_linger 'SO_LINGER' '#define HAVE_SO_LINGER' << \!
2397 #include <sys/socket.h>
2398 #include <stdlib.h>
2399 int main(void){
2400    struct linger li;
2401    int sockfd = 3;
2402
2403    li.l_onoff = 1;
2404    li.l_linger = 42;
2405    setsockopt(sockfd, SOL_SOCKET, SO_LINGER, &li, sizeof li);
2406    return 0;
2407 }
2408 !
2409
2410 VAL_SSL_FEATURES=
2411 if feat_yes SSL; then # {{{
2412    # {{{ LibreSSL decided to define OPENSSL_VERSION_NUMBER with a useless value
2413    # instead of keeping it at the one that corresponds to the OpenSSL at fork
2414    # time: we need to test it first in order to get things right
2415    if compile_check _xssl 'TLS/SSL (LibreSSL)' \
2416       '#define HAVE_SSL
2417       #define HAVE_XSSL
2418       #define HAVE_XSSL_RESSL
2419       #define HAVE_XSSL_OPENSSL 0' << \!
2420 #include <openssl/opensslv.h>
2421 #ifdef LIBRESSL_VERSION_NUMBER
2422 #else
2423 # error nope
2424 #endif
2425 !
2426    then
2427       ossl_v1_1=
2428       VAL_SSL_FEATURES=libressl
2429    # TODO OPENSSL_IS_BORINGSSL, but never tried that one!
2430    elif compile_check _xssl 'TLS/SSL (OpenSSL >= v1.1.0)' \
2431       '#define HAVE_SSL
2432       #define HAVE_XSSL
2433       #define HAVE_XSSL_OPENSSL 0x10100' << \!
2434 #include <openssl/opensslv.h>
2435 #if OPENSSL_VERSION_NUMBER + 0 >= 0x10100000L
2436 #else
2437 # error nope
2438 #endif
2439 !
2440    then
2441       ossl_v1_1=1
2442       VAL_SSL_FEATURES=libssl-0x10100
2443    elif compile_check _xssl 'TLS/SSL (OpenSSL)' \
2444       '#define HAVE_SSL
2445       #define HAVE_XSSL
2446       #define HAVE_XSSL_OPENSSL 0x10000' << \!
2447 #include <openssl/opensslv.h>
2448 #ifdef OPENSSL_VERSION_NUMBER
2449 #else
2450 # error nope
2451 #endif
2452 !
2453    then
2454       ossl_v1_1=
2455       VAL_SSL_FEATURES=libssl-0x10000
2456    else
2457       feat_bail_required SSL
2458    fi # }}}
2459
2460    if feat_yes SSL; then # {{{
2461       if [ -n "${ossl_v1_1}" ]; then
2462          without_check yes xssl 'TLS/SSL new style TLS_client_method(3ssl)' \
2463             '#define n_XSSL_CLIENT_METHOD TLS_client_method' \
2464             '-lssl -lcrypto'
2465       elif link_check xssl 'TLS/SSL new style TLS_client_method(3ssl)' \
2466             '#define n_XSSL_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 xssl 'TLS/SSL old style SSLv23_client_method(3ssl)' \
2487             '#define n_XSSL_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 SSL
2510       fi
2511    fi # }}}
2512
2513    if feat_yes SSL; then # {{{
2514       if feat_yes SSL_ALL_ALGORITHMS; then
2515          if [ -n "${ossl_v1_1}" ]; then
2516             without_check yes ssl_all_algo 'TLS/SSL all-algorithms support' \
2517                '#define HAVE_SSL_ALL_ALGORITHMS'
2518          elif link_check ssl_all_algo 'TLS/SSL all-algorithms support' \
2519             '#define HAVE_SSL_ALL_ALGORITHMS' << \!
2520 #include <openssl/evp.h>
2521 int main(void){
2522    OpenSSL_add_all_algorithms();
2523    EVP_get_cipherbyname("two cents i never exist");
2524    EVP_cleanup();
2525    return 0;
2526 }
2527 !
2528          then
2529             :
2530          else
2531             feat_bail_required SSL_ALL_ALGORITHMS
2532          fi
2533       elif [ -n "${ossl_v1_1}" ]; then
2534          without_check yes ssl_all_algo \
2535             'TLS/SSL all-algorithms (always available in v1.1.0+)' \
2536             '#define HAVE_SSL_ALL_ALGORITHMS'
2537       fi
2538
2539       if [ -n "${ossl_v1_1}" ]; then
2540          without_check yes xssl_stack_of 'TLS/SSL STACK_OF()' \
2541             '#define HAVE_XSSL_STACK_OF'
2542       elif compile_check xssl_stack_of 'TLS/SSL STACK_OF()' \
2543             '#define HAVE_XSSL_STACK_OF' << \!
2544 #include <stdio.h> /* For C89 NULL */
2545 #include <openssl/ssl.h>
2546 #include <openssl/err.h>
2547 #include <openssl/x509v3.h>
2548 #include <openssl/x509.h>
2549 #include <openssl/rand.h>
2550 int main(void){
2551    STACK_OF(GENERAL_NAME) *gens = NULL;
2552
2553    printf("%p", gens); /* to use it */
2554    return 0;
2555 }
2556 !
2557       then
2558          :
2559       fi
2560
2561       if [ -n "${ossl_v1_1}" ]; then
2562          without_check yes xssl_conf 'TLS/SSL OpenSSL_modules_load_file(3ssl)' \
2563             '#define HAVE_XSSL_CONFIG'
2564          VAL_SSL_FEATURES="${VAL_SSL_FEATURES},+modules-load-file"
2565       elif link_check xssl_conf \
2566             'TLS/SSL OpenSSL_modules_load_file(3ssl) support' \
2567             '#define HAVE_XSSL_CONFIG' << \!
2568 #include <stdio.h> /* For C89 NULL */
2569 #include <openssl/conf.h>
2570 int main(void){
2571    CONF_modules_load_file(NULL, NULL, CONF_MFLAGS_IGNORE_MISSING_FILE);
2572    CONF_modules_free();
2573    return 0;
2574 }
2575 !
2576       then
2577          VAL_SSL_FEATURES="${VAL_SSL_FEATURES},+modules-load-file"
2578       else
2579          VAL_SSL_FEATURES="${VAL_SSL_FEATURES},-modules-load-file"
2580       fi
2581
2582       if [ -n "${ossl_v1_1}" ]; then
2583          without_check yes xssl_conf_ctx 'TLS/SSL SSL_CONF_CTX support' \
2584             '#define HAVE_XSSL_CONF_CTX'
2585          VAL_SSL_FEATURES="${VAL_SSL_FEATURES},+conf-ctx"
2586       elif link_check xssl_conf_ctx 'TLS/SSL SSL_CONF_CTX support' \
2587          '#define HAVE_XSSL_CONF_CTX' << \!
2588 #include <openssl/ssl.h>
2589 #include <openssl/err.h>
2590 int main(void){
2591    SSL_CTX *ctx = SSL_CTX_new(n_XSSL_CLIENT_METHOD());
2592    SSL_CONF_CTX *cctx = SSL_CONF_CTX_new();
2593
2594    SSL_CONF_CTX_set_flags(cctx,
2595       SSL_CONF_FLAG_FILE | SSL_CONF_FLAG_CLIENT |
2596       SSL_CONF_FLAG_CERTIFICATE | SSL_CONF_FLAG_SHOW_ERRORS);
2597    SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
2598    SSL_CONF_cmd(cctx, "Protocol", "ALL");
2599    SSL_CONF_CTX_finish(cctx);
2600    SSL_CONF_CTX_free(cctx);
2601    SSL_CTX_free(ctx);
2602    return 0;
2603 }
2604 !
2605       then
2606          VAL_SSL_FEATURES="${VAL_SSL_FEATURES},+conf-ctx"
2607       else
2608          VAL_SSL_FEATURES="${VAL_SSL_FEATURES},-conf-ctx"
2609       fi
2610
2611       if [ -n "${ossl_v1_1}" ]; then
2612          without_check yes xssl_ctx_config 'TLS/SSL SSL_CTX_config(3ssl)' \
2613             '#define HAVE_XSSL_CTX_CONFIG'
2614          VAL_SSL_FEATURES="${VAL_SSL_FEATURES},+ctx-config"
2615       elif [ -n "${have_xssl_conf}" ] && [ -n "${have_xssl_conf_ctx}" ] &&
2616             link_check xssl_ctx_config 'TLS/SSL SSL_CTX_config(3ssl)' \
2617                '#define HAVE_XSSL_CTX_CONFIG' << \!
2618 #include <stdio.h> /* For C89 NULL */
2619 #include <openssl/ssl.h>
2620 int main(void){
2621    SSL_CTX_config(NULL, "SOMEVAL");
2622    return 0;
2623 }
2624 !
2625       then
2626          VAL_SSL_FEATURES="${VAL_SSL_FEATURES},+ctx-config"
2627       else
2628          VAL_SSL_FEATURES="${VAL_SSL_FEATURES},-ctx-config"
2629       fi
2630
2631       if [ -n "${ossl_v1_1}" ] && [ -n "${have_xssl_conf_ctx}" ]; then
2632          without_check yes xssl_set_maxmin_proto \
2633             'TLS/SSL SSL_CTX_set_min_proto_version(3ssl)' \
2634             '#define HAVE_XSSL_SET_MIN_PROTO_VERSION'
2635          VAL_SSL_FEATURES="${VAL_SSL_FEATURES},+ctx-set-maxmin-proto"
2636       elif link_check xssl_set_maxmin_proto \
2637          'TLS/SSL SSL_CTX_set_min_proto_version(3ssl)' \
2638          '#define HAVE_XSSL_SET_MIN_PROTO_VERSION' << \!
2639 #include <stdio.h> /* For C89 NULL */
2640 #include <openssl/ssl.h>
2641 int main(void){
2642    SSL_CTX_set_min_proto_version(NULL, 0);
2643    SSL_CTX_set_max_proto_version(NULL, 10);
2644    return 0;
2645 }
2646 !
2647       then
2648          VAL_SSL_FEATURES="${VAL_SSL_FEATURES},+ctx-set-maxmin-proto"
2649       else
2650          VAL_SSL_FEATURES="${VAL_SSL_FEATURES},-ctx-set-maxmin-proto"
2651       fi
2652
2653       if [ -n "${ossl_v1_1}" ] && [ -n "${have_xssl_conf_ctx}" ]; then
2654          without_check yes xssl_set_ciphersuites \
2655             'TLSv1.3 SSL_CTX_set_ciphersuites(3ssl)' \
2656             '#define HAVE_XSSL_SET_CIPHERSUITES'
2657          VAL_SSL_FEATURES="${VAL_SSL_FEATURES},+ctx-set-ciphersuites"
2658       elif link_check xssl_set_ciphersuites \
2659          'TLSv1.3 SSL_CTX_set_ciphersuites(3ssl)' \
2660          '#define HAVE_XSSL_SET_CIPHERSUITES' << \!
2661 #include <stdio.h> /* For C89 NULL */
2662 #include <openssl/ssl.h>
2663 int main(void){
2664    SSL_CTX_set_ciphersuites(NULL, NULL);
2665    return 0;
2666 }
2667 !
2668       then
2669          VAL_SSL_FEATURES="${VAL_SSL_FEATURES},+ctx-set-ciphersuites"
2670       else
2671          VAL_SSL_FEATURES="${VAL_SSL_FEATURES},-ctx-set-ciphersuites"
2672       fi
2673
2674       if link_check xssl_rand_egd 'TLS/SSL RAND_egd(3ssl)' \
2675             '#define HAVE_XSSL_RAND_EGD' << \!
2676 #include <openssl/rand.h>
2677 int main(void){
2678    return RAND_egd("some.where") > 0;
2679 }
2680 !
2681       then
2682          VAL_SSL_FEATURES="${VAL_SSL_FEATURES},+rand-egd"
2683       else
2684          VAL_SSL_FEATURES="${VAL_SSL_FEATURES},-rand-egd"
2685       fi
2686    fi # feat_yes SSL }}}
2687
2688    if feat_yes SSL && feat_yes MD5 && feat_no NOEXTMD5; then # {{{
2689       run_check ssl_md5 'MD5 digest in the used crypto library' \
2690             '#define HAVE_XSSL_MD5' << \!
2691 #include <stdlib.h>
2692 #include <string.h>
2693 #include <openssl/md5.h>
2694 int main(void){
2695    char const dat[] = "abrakadabrafidibus";
2696    char dig[16], hex[16 * 2];
2697    MD5_CTX ctx;
2698    size_t i, j;
2699
2700    memset(dig, 0, sizeof(dig));
2701    memset(hex, 0, sizeof(hex));
2702    MD5_Init(&ctx);
2703    MD5_Update(&ctx, dat, sizeof(dat) - 1);
2704    MD5_Final(dig, &ctx);
2705
2706 #define hexchar(n) ((n) > 9 ? (n) - 10 + 'a' : (n) + '0')
2707    for(i = 0; i < sizeof(hex) / 2; i++){
2708       j = i << 1;
2709       hex[j] = hexchar((dig[i] & 0xf0) >> 4);
2710       hex[++j] = hexchar(dig[i] & 0x0f);
2711    }
2712    return !!memcmp("6d7d0a3d949da2e96f2aa010f65d8326", hex, sizeof(hex));
2713 }
2714 !
2715    fi # }}}
2716
2717    if feat_yes SSL; then
2718       feat_def SSL_ALL_ALGORITHMS
2719    else
2720       feat_bail_required SSL_ALL_ALGORITHMS
2721    fi
2722 else
2723    feat_is_disabled SSL
2724    feat_is_disabled SSL_ALL_ALGORITHMS
2725 fi # }}} feat_yes SSL
2726 printf '#define VAL_SSL_FEATURES "#'"${VAL_SSL_FEATURES}"'"\n' >> ${h}
2727
2728 if [ "${have_xssl}" = yes ]; then
2729    OPT_SMIME=1
2730 else
2731    OPT_SMIME=0
2732 fi
2733 feat_def SMIME
2734
2735 # VAL_RANDOM {{{
2736 if val_allof VAL_RANDOM \
2737       "arc4,ssl,libgetrandom,sysgetrandom,urandom,builtin,error"; then
2738    :
2739 else
2740    msg 'ERROR: VAL_RANDOM with invalid entries: %s' "${VAL_RANDOM}"
2741    config_exit 1
2742 fi
2743
2744 val_random_arc4() {
2745    link_check arc4random 'VAL_RANDOM: arc4random(3)' \
2746       '#define HAVE_RANDOM n_RANDOM_IMPL_ARC4' << \!
2747 #include <stdlib.h>
2748 int main(void){
2749    arc4random();
2750    return 0;
2751 }
2752 !
2753 }
2754
2755 val_random_ssl() {
2756    if feat_yes SSL; then
2757       msg ' . VAL_RANDOM: ssl ... yes'
2758       echo '#define HAVE_RANDOM n_RANDOM_IMPL_SSL' >> ${h}
2759       return 0
2760    else
2761       msg ' . VAL_RANDOM: ssl ... no'
2762       return 1
2763    fi
2764 }
2765
2766 val_random_libgetrandom() {
2767    link_check getrandom 'VAL_RANDOM: getrandom(3) (in sys/random.h)' \
2768       '#define HAVE_RANDOM n_RANDOM_IMPL_GETRANDOM
2769       #define n_RANDOM_GETRANDOM_FUN(B,S) getrandom(B, S, 0)
2770       #define n_RANDOM_GETRANDOM_H <sys/random.h>' <<\!
2771 #include <sys/random.h>
2772 int main(void){
2773    char buf[256];
2774    getrandom(buf, sizeof buf, 0);
2775    return 0;
2776 }
2777 !
2778 }
2779
2780 val_random_sysgetrandom() {
2781    link_check getrandom 'VAL_RANDOM: getrandom(2) (via syscall(2))' \
2782       '#define HAVE_RANDOM n_RANDOM_IMPL_GETRANDOM
2783       #define n_RANDOM_GETRANDOM_FUN(B,S) syscall(SYS_getrandom, B, S, 0)
2784       #define n_RANDOM_GETRANDOM_H <sys/syscall.h>' <<\!
2785 #include <sys/syscall.h>
2786 int main(void){
2787    char buf[256];
2788    syscall(SYS_getrandom, buf, sizeof buf, 0);
2789    return 0;
2790 }
2791 !
2792 }
2793
2794 val_random_urandom() {
2795    msg_nonl ' . VAL_RANDOM: /dev/urandom ... '
2796    if feat_yes CROSS_BUILD; then
2797       msg 'yes (unchecked)'
2798       echo '#define HAVE_RANDOM n_RANDOM_IMPL_URANDOM' >> ${h}
2799    elif [ -f /dev/urandom ]; then
2800       msg yes
2801       echo '#define HAVE_RANDOM n_RANDOM_IMPL_URANDOM' >> ${h}
2802    else
2803       msg no
2804       return 1
2805    fi
2806    return 0
2807 }
2808
2809 val_random_builtin() {
2810    msg_nonl ' . VAL_RANDOM: builtin ... '
2811    if [ -n "${have_no_subsecond_time}" ]; then
2812       msg 'no\nERROR: %s %s' 'without a specialized PRG ' \
2813          'one of clock_gettime(2) and gettimeofday(2) is required.'
2814       config_exit 1
2815    else
2816       msg yes
2817       echo '#define HAVE_RANDOM n_RANDOM_IMPL_BUILTIN' >> ${h}
2818    fi
2819 }
2820
2821 val_random_error() {
2822    msg 'ERROR: VAL_RANDOM search reached "error" entry'
2823    config_exit 42
2824 }
2825
2826 oifs=${IFS}
2827 IFS=", "
2828 VAL_RANDOM="${VAL_RANDOM},error"
2829 set -- ${VAL_RANDOM}
2830 IFS=${oifs}
2831 for randfun
2832 do
2833    eval val_random_$randfun && break
2834 done
2835 # }}} VAL_RANDOM
2836
2837 feat_def SMTP
2838 feat_def POP3
2839 feat_def IMAP
2840
2841 if feat_yes GSSAPI; then
2842    ${cat} > ${tmp2}.c << \!
2843 #include <gssapi/gssapi.h>
2844 int main(void){
2845    gss_import_name(0, 0, GSS_C_NT_HOSTBASED_SERVICE, 0);
2846    gss_init_sec_context(0,0,0,0,0,0,0,0,0,0,0,0,0);
2847    return 0;
2848 }
2849 !
2850    ${sed} -e '1s/gssapi\///' < ${tmp2}.c > ${tmp3}.c
2851
2852    if acmd_set i krb5-config; then
2853       GSS_LIBS="`CFLAGS= ${i} --libs gssapi`"
2854       GSS_INCS="`CFLAGS= ${i} --cflags`"
2855       i='GSS-API via krb5-config(1)'
2856    else
2857       GSS_LIBS='-lgssapi'
2858       GSS_INCS=
2859       i='GSS-API in gssapi/gssapi.h, libgssapi'
2860    fi
2861    if < ${tmp2}.c link_check gss \
2862          "${i}" '#define HAVE_GSSAPI' "${GSS_LIBS}" "${GSS_INCS}" ||\
2863       < ${tmp3}.c link_check gss \
2864          'GSS-API in gssapi.h, libgssapi' \
2865          '#define HAVE_GSSAPI
2866          #define GSSAPI_REG_INCLUDE' \
2867          '-lgssapi' ||\
2868       < ${tmp2}.c link_check gss 'GSS-API in libgssapi_krb5' \
2869          '#define HAVE_GSSAPI' \
2870          '-lgssapi_krb5' ||\
2871       < ${tmp3}.c link_check gss \
2872          'GSS-API in libgssapi, OpenBSD-style (pre 5.3)' \
2873          '#define HAVE_GSSAPI
2874          #define GSS_REG_INCLUDE' \
2875          '-lgssapi -lkrb5 -lcrypto' \
2876          '-I/usr/include/kerberosV' ||\
2877       < ${tmp2}.c link_check gss 'GSS-API in libgss' \
2878          '#define HAVE_GSSAPI' \
2879          '-lgss' ||\
2880       link_check gss 'GSS-API in libgssapi_krb5, old-style' \
2881          '#define HAVE_GSSAPI
2882          #define GSSAPI_OLD_STYLE' \
2883          '-lgssapi_krb5' << \!
2884 #include <gssapi/gssapi.h>
2885 #include <gssapi/gssapi_generic.h>
2886 int main(void){
2887    gss_import_name(0, 0, gss_nt_service_name, 0);
2888    gss_init_sec_context(0,0,0,0,0,0,0,0,0,0,0,0,0);
2889    return 0;
2890 }
2891 !
2892    then
2893       :
2894    else
2895       feat_bail_required GSSAPI
2896    fi
2897 else
2898    feat_is_disabled GSSAPI
2899 fi # feat_yes GSSAPI
2900
2901 feat_def NETRC
2902 feat_def AGENT
2903
2904 if feat_yes IDNA; then # {{{
2905    if val_allof VAL_IDNA "idnkit,idn2,idn"; then
2906       :
2907    else
2908       msg 'ERROR: VAL_IDNA with invalid entries: %s' "${VAL_IDNA}"
2909       config_exit 1
2910    fi
2911
2912    val_idna_idn2() {
2913       link_check idna 'OPT_IDNA: GNU Libidn2' \
2914          '#define HAVE_IDNA n_IDNA_IMPL_LIBIDN2' '-lidn2' << \!
2915 #include <idn2.h>
2916 int main(void){
2917    char *idna_utf8, *idna_lc;
2918
2919    if(idn2_to_ascii_8z("does.this.work", &idna_utf8,
2920          IDN2_NONTRANSITIONAL | IDN2_TRANSITIONAL) != IDN2_OK)
2921       return 1;
2922    if(idn2_to_unicode_8zlz(idna_utf8, &idna_lc, 0) != IDN2_OK)
2923       return 1;
2924    idn2_free(idna_lc);
2925    idn2_free(idna_utf8);
2926    return 0;
2927 }
2928 !
2929    }
2930
2931    val_idna_idn() {
2932       link_check idna 'OPT_IDNA: GNU Libidn' \
2933          '#define HAVE_IDNA n_IDNA_IMPL_LIBIDN' '-lidn' << \!
2934 #include <idna.h>
2935 #include <idn-free.h>
2936 #include <stringprep.h> /* XXX we actually use our own iconv instead */
2937 int main(void){
2938    char *utf8, *idna_ascii, *idna_utf8;
2939
2940    utf8 = stringprep_locale_to_utf8("does.this.work");
2941    if (idna_to_ascii_8z(utf8, &idna_ascii, IDNA_USE_STD3_ASCII_RULES)
2942          != IDNA_SUCCESS)
2943       return 1;
2944    idn_free(idna_ascii);
2945    /* (Rather link check only here) */
2946    idna_utf8 = stringprep_convert(idna_ascii, "UTF-8", "de_DE");
2947    return 0;
2948 }
2949 !
2950    }
2951
2952    val_idna_idnkit() {
2953       link_check idna 'OPT_IDNA: idnkit' \
2954          '#define HAVE_IDNA n_IDNA_IMPL_IDNKIT' '-lidnkit' << \!
2955 #include <stdio.h>
2956 #include <idn/api.h>
2957 #include <idn/result.h>
2958 int main(void){
2959    idn_result_t r;
2960    char ace_name[256];
2961    char local_name[256];
2962
2963    r = idn_encodename(IDN_ENCODE_APP, "does.this.work", ace_name,
2964          sizeof(ace_name));
2965    if (r != idn_success) {
2966       fprintf(stderr, "idn_encodename failed: %s\n", idn_result_tostring(r));
2967       return 1;
2968    }
2969    r = idn_decodename(IDN_DECODE_APP, ace_name, local_name, sizeof(local_name));
2970    if (r != idn_success) {
2971       fprintf(stderr, "idn_decodename failed: %s\n", idn_result_tostring(r));
2972       return 1;
2973    }
2974    return 0;
2975 }
2976 !
2977    }
2978
2979    val_idna_bye() {
2980       feat_bail_required IDNA
2981    }
2982
2983    oifs=${IFS}
2984    IFS=", "
2985    VAL_IDNA="${VAL_IDNA},bye"
2986    set -- ${VAL_IDNA}
2987    IFS=${oifs}
2988    for randfun
2989    do
2990       eval val_idna_$randfun && break
2991    done
2992 else
2993    feat_is_disabled IDNA
2994 fi # }}} IDNA
2995
2996 feat_def IMAP_SEARCH
2997
2998 if feat_yes REGEX; then
2999    if link_check regex 'regular expressions' '#define HAVE_REGEX' << \!
3000 #include <regex.h>
3001 #include <stdlib.h>
3002 int main(void){
3003    size_t xret;
3004    int status;
3005    regex_t re;
3006
3007    status = regcomp(&re, ".*bsd", REG_EXTENDED | REG_ICASE | REG_NOSUB);
3008    xret = regerror(status, &re, NULL, 0);
3009    status = regexec(&re, "plan9", 0,NULL, 0);
3010    regfree(&re);
3011    return !(status == REG_NOMATCH);
3012 }
3013 !
3014    then
3015       :
3016    else
3017       feat_bail_required REGEX
3018    fi
3019 else
3020    feat_is_disabled REGEX
3021 fi
3022
3023 if feat_yes MLE; then
3024    if [ -n "${have_c90amend1}" ]; then
3025       have_mle=1
3026       echo '#define HAVE_MLE' >> ${h}
3027    else
3028       feat_bail_required MLE
3029    fi
3030 else
3031    feat_is_disabled MLE
3032 fi
3033
3034 # Generic have-a-line-editor switch for those who need it below
3035 if [ -n "${have_mle}" ]; then
3036    have_cle=1
3037 fi
3038
3039 if feat_yes HISTORY; then
3040    if [ -n "${have_cle}" ]; then
3041       echo '#define HAVE_HISTORY' >> ${h}
3042    else
3043       feat_is_unsupported HISTORY
3044    fi
3045 else
3046    feat_is_disabled HISTORY
3047 fi
3048
3049 if feat_yes KEY_BINDINGS; then
3050    if [ -n "${have_mle}" ]; then
3051       echo '#define HAVE_KEY_BINDINGS' >> ${h}
3052    else
3053       feat_is_unsupported KEY_BINDINGS
3054    fi
3055 else
3056    feat_is_disabled KEY_BINDINGS
3057 fi
3058
3059 if feat_yes TERMCAP; then # {{{
3060    ADDINC=
3061    __termcaplib() {
3062       link_check termcap "termcap(5) (via ${4}${ADDINC})" \
3063          "#define HAVE_TERMCAP${3}" "${1}" "${ADDINC}" << _EOT
3064 #include <stdio.h>
3065 #include <stdlib.h>
3066 ${2}
3067 #include <term.h>
3068 #define UNCONST(P) ((void*)(unsigned long)(void const*)(P))
3069 static int my_putc(int c){return putchar(c);}
3070 int main(void){
3071    char buf[1024+512], cmdbuf[2048], *cpb, *r1;
3072    int r2 = OK, r3 = ERR;
3073
3074    tgetent(buf, getenv("TERM"));
3075    cpb = cmdbuf;
3076    r1 = tgetstr(UNCONST("cm"), &cpb);
3077    tgoto(r1, 1, 1);
3078    r2 = tgetnum(UNCONST("Co"));
3079    r3 = tgetflag(UNCONST("ut"));
3080    tputs("cr", 1, &my_putc);
3081    return (r1 == NULL || r2 == -1 || r3 == 0);
3082 }
3083 _EOT
3084    }
3085
3086    __terminfolib() {
3087       link_check terminfo "terminfo(5) (via ${2}${ADDINC})" \
3088          '#define HAVE_TERMCAP
3089          #define HAVE_TERMCAP_CURSES
3090          #define HAVE_TERMINFO' "${1}" "${ADDINC}" << _EOT
3091 #include <stdio.h>
3092 #include <curses.h>
3093 #include <term.h>
3094 #define UNCONST(P) ((void*)(unsigned long)(void const*)(P))
3095 static int my_putc(int c){return putchar(c);}
3096 int main(void){
3097    int er, r0, r1, r2;
3098    char *r3, *tp;
3099
3100    er = OK;
3101    r0 = setupterm(NULL, 1, &er);
3102    r1 = tigetflag(UNCONST("bce"));
3103    r2 = tigetnum(UNCONST("colors"));
3104    r3 = tigetstr(UNCONST("cr"));
3105    tp = tparm(r3, NULL, NULL, 0,0,0,0,0,0,0);
3106    tputs(tp, 1, &my_putc);
3107    return (r0 == ERR || r1 == -1 || r2 == -2 || r2 == -1 ||
3108       r3 == (char*)-1 || r3 == NULL);
3109 }
3110 _EOT
3111    }
3112
3113    if feat_yes TERMCAP_VIA_TERMINFO; then
3114       ADDINC=
3115       do_me() {
3116          xbail=
3117          __terminfolib -ltinfo -ltinfo ||
3118             __terminfolib -lcurses -lcurses ||
3119             __terminfolib -lcursesw -lcursesw ||
3120          xbail=y
3121       }
3122       do_me
3123       if [ -n "${xbail}" ] && [ -d /usr/local/include/ncurses ]; then
3124          ADDINC=' -I/usr/local/include/ncurses'
3125          do_me
3126       fi
3127       if [ -n "${xbail}" ] && [ -d /usr/include/ncurses ]; then
3128          ADDINC=' -I/usr/include/ncurses'
3129          do_me
3130       fi
3131       [ -n "${xbail}" ] && feat_bail_required TERMCAP_VIA_TERMINFO
3132    fi
3133
3134    if [ -z "${have_terminfo}" ]; then
3135       ADDINC=
3136       do_me() {
3137          xbail=
3138          __termcaplib -ltermcap '' '' '-ltermcap' ||
3139             __termcaplib -ltermcap '#include <curses.h>' '
3140                #define HAVE_TERMCAP_CURSES' \
3141                'curses.h / -ltermcap' ||
3142             __termcaplib -lcurses '#include <curses.h>' '
3143                #define HAVE_TERMCAP_CURSES' \
3144                'curses.h / -lcurses' ||
3145             __termcaplib -lcursesw '#include <curses.h>' '
3146                #define HAVE_TERMCAP_CURSES' \
3147                'curses.h / -lcursesw' ||
3148             xbail=y
3149       }
3150       do_me
3151       if [ -n "${xbail}" ] && [ -d /usr/local/include/ncurses ]; then
3152          ADDINC=' -I/usr/local/include/ncurses'
3153          do_me
3154       fi
3155       if [ -n "${xbail}" ] && [ -d /usr/include/ncurses ]; then
3156          ADDINC=' -I/usr/include/ncurses'
3157          do_me
3158       fi
3159       [ -n "${xbail}" ] && feat_bail_required TERMCAP
3160
3161       if [ -n "${have_termcap}" ]; then
3162          run_check tgetent_null \
3163             "tgetent(3) of termcap(5) takes NULL buffer" \
3164             "#define HAVE_TGETENT_NULL_BUF" << _EOT
3165 #include <stdio.h> /* For C89 NULL */
3166 #include <stdlib.h>
3167 #ifdef HAVE_TERMCAP_CURSES
3168 # include <curses.h>
3169 #endif
3170 #include <term.h>
3171 int main(void){
3172    tgetent(NULL, getenv("TERM"));
3173    return 0;
3174 }
3175 _EOT
3176       fi
3177    fi
3178    unset ADDINC
3179 else # }}}
3180    feat_is_disabled TERMCAP
3181    feat_is_disabled TERMCAP_VIA_TERMINFO
3182 fi
3183
3184 if feat_def SPAM_SPAMC; then
3185    if acmd_set i spamc; then
3186       echo "#define SPAM_SPAMC_PATH \"${i}\"" >> ${h}
3187    fi
3188 fi
3189
3190 if feat_yes SPAM_SPAMD; then
3191    if [ -n "${have_af_unix}" ]; then
3192       echo '#define HAVE_SPAM_SPAMD' >> ${h}
3193    else
3194       feat_bail_required SPAM_SPAMD
3195    fi
3196 else
3197    feat_is_disabled SPAM_SPAMD
3198 fi
3199
3200 feat_def SPAM_FILTER
3201
3202 if feat_yes SPAM_SPAMC || feat_yes SPAM_SPAMD || feat_yes SPAM_FILTER; then
3203    echo '#define HAVE_SPAM' >> ${h}
3204 else
3205    echo '/* HAVE_SPAM */' >> ${h}
3206 fi
3207
3208 if feat_yes QUOTE_FOLD; then
3209    if [ -n "${have_c90amend1}" ] && [ -n "${have_wcwidth}" ]; then
3210       echo '#define HAVE_QUOTE_FOLD' >> ${h}
3211    else
3212       feat_bail_required QUOTE_FOLD
3213    fi
3214 else
3215    feat_is_disabled QUOTE_FOLD
3216 fi
3217
3218 feat_def FILTER_HTML_TAGSOUP
3219 feat_def COLOUR
3220 feat_def DOTLOCK
3221 feat_def MD5
3222
3223 ## Summarizing
3224
3225 ${rm} -f ${tmp}
3226 squeeze_em ${inc} ${tmp}
3227 ${mv} ${tmp} ${inc}
3228 squeeze_em ${lib} ${tmp}
3229 ${mv} ${tmp} ${lib}
3230
3231 echo "LIBS = `${cat} ${lib}`" >> ${mk}
3232 echo "INCS = `${cat} ${inc}`" >> ${mk}
3233 echo >> ${mk}
3234
3235 # mk-config.h
3236 ${mv} ${h} ${tmp}
3237 printf '#ifndef n_MK_CONFIG_H\n# define n_MK_CONFIG_H 1\n' > ${h}
3238 ${cat} ${tmp} >> ${h}
3239 printf '\n' >> ${h}
3240 # We need these for correct "second stage configuration changed" detection */
3241 echo "/* `${cat} ${lib}` */" >> ${h}
3242 echo "/* `${cat} ${inc}` */" >> ${h}
3243 printf '\n' >> ${h}
3244
3245 # Throw away all temporaries
3246 ${rm} -rf ${tmp0}.* ${tmp0}*
3247
3248 # Create the string that is used by *features* and `version'.
3249 # Take this nice opportunity and generate a visual listing of included and
3250 # non-included features for the person who runs the configuration
3251 echo 'The following features are included (+) or not (-):' > ${tmp}
3252 set -- ${OPTIONS_DETECT} ${OPTIONS} ${OPTIONS_XTRA}
3253 printf '/* The "feature string" */\n' >> ${h}
3254 # Because + is expanded by *folder* if first in "echo $features", put something
3255 printf '#define VAL_FEATURES_CNT '${#}'\n#define VAL_FEATURES "#' >> ${h}
3256 sep=
3257 for opt
3258 do
3259    sdoc=`option_doc_of ${opt}`
3260    [ -z "${sdoc}" ] && continue
3261    sopt="`echo ${opt} | ${tr} '[A-Z]_' '[a-z]-'`"
3262    feat_yes ${opt} && sign=+ || sign=-
3263    printf -- "${sep}${sign}${sopt}" >> ${h}
3264    sep=','
3265    printf ' %s %s: %s\n' ${sign} ${sopt} "${sdoc}" >> ${tmp}
3266 done
3267 # TODO instead of using sh+tr+awk+printf, use awk, drop option_doc_of, inc here
3268 #exec 5>&1 >>${h}
3269 #${awk} -v opts="${OPTIONS_DETECT} ${OPTIONS} ${OPTIONS_XTRA}" \
3270 #   -v xopts="${XOPTIONS_DETECT} ${XOPTIONS} ${XOPTIONS_XTRA}" \
3271 printf '"\n' >> ${h}
3272
3273 # Create the real mk-config.mk
3274 # Note we cannout use explicit ./ filename prefix for source and object
3275 # pathnames because of a bug in bmake(1)
3276 srclist= objlist=
3277 if feat_no AMALGAMATION; then
3278    for i in `printf '%s\n' "${SRCDIR}"*.c | ${sort}`; do
3279       i=`basename "${i}" .c`
3280       if [ "${i}" = privsep ]; then
3281          continue
3282       fi
3283       objlist="${objlist} ${i}.o"
3284       srclist="${srclist} \$(SRCDIR)${i}.c"
3285       printf '%s: %s\n\t$(ECHO_CC)$(CC) $(CFLAGS) $(INCS) -c %s\n' \
3286          "${i}.o" "\$(SRCDIR)${i}.c" "\$(SRCDIR)${i}.c" >> ${mk}
3287    done
3288    printf '\nAMALGAM_TARGET =\nAMALGAM_DEP =\n' >> ${mk}
3289 else
3290    printf '%s:\n\t$(ECHO_CC)$(CC) $(CFLAGS) $(INCS) -c $(SRCDIR)%s\n' \
3291       "main.o" "main.c" >> ${mk}
3292    srclist=main.c objlist=main.o
3293    printf '\nAMALGAM_TARGET = main.o\nAMALGAM_DEP = ' >> ${mk}
3294
3295    printf '\n/* HAVE_AMALGAMATION: include sources */\n' >> ${h}
3296    printf '#elif n_MK_CONFIG_H + 0 == 1\n' >> ${h}
3297    printf '# undef n_MK_CONFIG_H\n' >> ${h}
3298    printf '# define n_MK_CONFIG_H 2\n' >> ${h}
3299    for i in `printf '%s\n' "${SRCDIR}"*.c | ${sort}`; do
3300       i=`basename "${i}"`
3301       if [ "${i}" = main.c ] ||
3302             [ "${i}" = privsep.c ]; then
3303          continue
3304       fi
3305       printf '$(SRCDIR)%s ' "${i}" >> ${mk}
3306       printf '# include "%s%s"\n' "${SRCDIR}" "${i}" >> ${h}
3307    done
3308    echo >> ${mk}
3309 fi
3310 printf 'OBJ_SRC = %s\nOBJ = %s\n' "${srclist}" "${objlist}" >> "${mk}"
3311
3312 printf '#endif /* n_MK_CONFIG_H */\n' >> ${h}
3313
3314 echo >> ${mk}
3315 ${cat} "${SRCDIR}"make-config.in >> ${mk}
3316
3317 ## Finished!
3318
3319 # We have completed the new configuration header.  Check whether *really*
3320 # Do the "second stage configuration changed" detection, exit if nothing to do
3321 if [ -f ${oldh} ]; then
3322    if ${cmp} ${h} ${oldh} >/dev/null 2>&1; then
3323       ${mv} -f ${oldh} ${h}
3324       msg 'Effective configuration is up-to-date'
3325       exit 0
3326    fi
3327    config_updated=1
3328    ${rm} -f ${oldh}
3329    msg 'Effective configuration has been updated..'
3330 fi
3331
3332 if [ -n "${config_updated}" ]; then
3333    msg 'Wiping away old objects and such..'
3334    ( cd .obj; oldmk=`${basename} ${oldmk}`; ${MAKE} -f ${oldmk} clean )
3335 fi
3336
3337 msg ''
3338 while read l; do msg "${l}"; done < ${tmp}
3339
3340 msg 'Setup:'
3341 msg ' . System-wide resource file: %s/%s' "${VAL_SYSCONFDIR}" "${VAL_SYSCONFRC}"
3342 msg ' . bindir: %s' "${VAL_BINDIR}"
3343 if feat_yes DOTLOCK; then
3344    msg ' . libexecdir: %s' "${VAL_LIBEXECDIR}"
3345 fi
3346 msg ' . mandir: %s' "${VAL_MANDIR}"
3347 msg ' . M(ail)T(ransfer)A(gent): %s (argv0: %s)' "${VAL_MTA}" "${VAL_MTA_ARGV0}"
3348 msg ' . $MAIL spool directory: %s' "${VAL_MAIL}"
3349
3350 msg ''
3351 if [ -n "${have_fnmatch}" ] && [ -n "${have_fchdir}" ]; then
3352    exit 0
3353 fi
3354 msg 'Remarks:'
3355 if [ -z "${have_fnmatch}" ]; then
3356    msg ' . The function fnmatch(3) could not be found.'
3357    msg '   Filename patterns like wildcard are not supported on your system'
3358 fi
3359 if [ -z "${have_fchdir}" ]; then
3360    msg ' . The function fchdir(2) could not be found.'
3361    msg '   We will use chdir(2) instead.'
3362    msg '   This is a problem only if the current working directory is changed'
3363    msg '   while this program is inside of it'
3364 fi
3365 msg ''
3366
3367 # s-it-mode