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 # The feature set, to be kept in sync with make.rc
   8 # If no documentation given, the option is used as such; if doc is a hyphen,
   9 # entry is suppressed when configuration overview is printed, and also in the
  10 # *features* string: most likely for obsolete features etc.
  11 XOPTIONS="\
  12    ICONV='Character set conversion using iconv(3)' \
  13    SOCKETS='Network support' \
  14       SSL='SSL/TLS (OpenSSL / LibreSSL)' \
  15          SSL_ALL_ALGORITHMS='Support of all digest and cipher algorithms' \
  16       SMTP='Simple Mail Transfer Protocol client' \
  17       POP3='Post Office Protocol Version 3 client' \
  18       IMAP='IMAP v4r1 client' \
  19       GSSAPI='Generic Security Service authentication' \
  20       NETRC='.netrc file support' \
  21       AGENT='-' \
  22       MD5='MD5 message digest (APOP, CRAM-MD5)' \
  23    IDNA='Internationalized Domain Names for Applications (encode only)' \
  24    IMAP_SEARCH='IMAP-style search expressions' \
  25    REGEX='Regular expressions' \
  26    MLE='Mailx Line Editor' \
  27       HISTORY='Line editor history management' \
  28       KEY_BINDINGS='Configurable key bindings' \
  29    TERMCAP='Terminal capability queries (termcap(5))' \
  30       TERMCAP_VIA_TERMINFO='Terminal capability queries use terminfo(5)' \
  31    ERRORS='Error log message ring' \
  32    SPAM_SPAMC='Spam management via spamc(1) of spamassassin(1)' \
  33    SPAM_SPAMD='-' \
  34    SPAM_FILTER='Freely configurable *spam-filter-..*s' \
  35    DOCSTRINGS='Command documentation help strings' \
  36    QUOTE_FOLD='Extended *quote-fold*ing' \
  37    FILTER_HTML_TAGSOUP='Simple built-in HTML-to-text display filter' \
  38    COLOUR='Coloured message display' \
  39    DOTLOCK='Dotlock files and privilege-separated dotlock program' \
  40 "
  41
  42 # Options which are automatically deduced from host environment, i.e., these
  43 # need special treatment all around here to warp from/to OPT_ stuff
  44 # setlocale, C90AMEND1, NL_LANGINFO, wcwidth
  45 XOPTIONS_DETECT="\
  46    LOCALES='Locale support - printable characters etc. depend on environment' \
  47    MULTIBYTE_CHARSETS='Multibyte character sets' \
  48    TERMINAL_CHARSET='Automatic detection of terminal character set' \
  49    WIDE_GLYPHS='Wide glyph support' \
  50 "
  51
  52 # Rather special options, for custom building, or which always exist.
  53 # Mostly for generating the visual overview and the *features* string
  54 XOPTIONS_XTRA="\
  55    MIME='Multipurpose Internet Mail Extensions' \
  56    SMIME='S/MIME message signing, verification, en- and decryption' \
  57    CROSS_BUILD='Cross-compilation: trust any detected environment' \
  58    DEBUG='Debug enabled binary, not for end-users: THANKS!' \
  59    DEVEL='Computers do not blunder' \
  60 "
  61
  62 # The problem is that we don't have any tools we can use right now, so
  63 # encapsulate stuff in functions which get called in right order later on
  64
  65 option_reset() {
  66    set -- ${OPTIONS}
  67    for i
  68    do
  69       eval OPT_${i}=0
  70    done
  71 }
  72
  73 option_maximal() {
  74    set -- ${OPTIONS}
  75    for i
  76    do
  77       eval OPT_${i}=1
  78    done
  79    OPT_ICONV=require
  80    OPT_REGEX=require
  81    OPT_DOTLOCK=require
  82 }
  83
  84 option_setup() {
  85    option_parse OPTIONS_DETECT "${XOPTIONS_DETECT}"
  86    option_parse OPTIONS "${XOPTIONS}"
  87    option_parse OPTIONS_XTRA "${XOPTIONS_XTRA}"
  88    OPT_MIME=1
  89
  90    # Predefined CONFIG= urations take precedence over anything else
  91    if [ -n "${CONFIG}" ]; then
  92       case "${CONFIG}" in
  93       [nN][uU][lL][lL])
  94          option_reset
  95          ;;
  96       [nN][uU][lL][lL][iI])
  97          option_reset
  98          OPT_ICONV=require
  99          ;;
 100       [mM][iI][nN][iI][mM][aA][lL])
 101          option_reset
 102          OPT_ICONV=1
 103          OPT_REGEX=1
 104          OPT_DOTLOCK=require
 105          ;;
 106       [mM][eE][dD][iI][uU][mM])
 107          option_reset
 108          OPT_ICONV=require
 109          OPT_IDNA=1
 110          OPT_REGEX=1
 111          OPT_MLE=1
 112             OPT_HISTORY=1 OPT_KEY_BINDINGS=1
 113          OPT_ERRORS=1
 114          OPT_SPAM_FILTER=1
 115          OPT_DOCSTRINGS=1
 116          OPT_COLOUR=1
 117          OPT_DOTLOCK=require
 118          ;;
 119       [nN][eE][tT][sS][eE][nN][dD])
 120          option_reset
 121          OPT_ICONV=require
 122          OPT_SOCKETS=1
 123             OPT_SSL=require
 124             OPT_SMTP=require
 125             OPT_GSSAPI=1 OPT_NETRC=1 OPT_AGENT=1
 126          OPT_IDNA=1
 127          OPT_REGEX=1
 128          OPT_MLE=1
 129             OPT_HISTORY=1 OPT_KEY_BINDINGS=1
 130          OPT_DOCSTRINGS=1
 131          OPT_COLOUR=1
 132          OPT_DOTLOCK=require
 133          ;;
 134       [mM][aA][xX][iI][mM][aA][lL])
 135          option_reset
 136          option_maximal
 137          ;;
 138       [dD][eE][vV][eE][lL])
 139          OPT_DEVEL=1 OPT_DEBUG=1 OPT_NYD2=1
 140          option_maximal
 141          ;;
 142       [oO][dD][eE][vV][eE][lL])
 143          OPT_DEVEL=1
 144          option_maximal
 145          ;;
 146       *)
 147          echo >&2 "Unknown CONFIG= setting: ${CONFIG}"
 148          echo >&2 '   NULL, NULLI, MINIMAL, MEDIUM, NETSEND, MAXIMAL'
 149          exit 1
 150          ;;
 151       esac
 152       msg_nonl "CONFIG=${CONFIG} ... "
 153    fi
 154 }
 155
 156 # Inter-relationships
 157 option_update() {
 158    if feat_no SMTP && feat_no POP3 && feat_no IMAP; then
 159       OPT_SOCKETS=0
 160    fi
 161    if feat_no SOCKETS; then
 162       if feat_require SMTP; then
 163          msg 'ERROR: need SOCKETS for required feature SMTP'
 164          config_exit 13
 165       fi
 166       if feat_require POP3; then
 167          msg 'ERROR: need SOCKETS for required feature POP3'
 168          config_exit 13
 169       fi
 170       if feat_require IMAP; then
 171          msg 'ERROR: need SOCKETS for required feature IMAP'
 172          config_exit 13
 173       fi
 174       OPT_SSL=0 OPT_SSL_ALL_ALGORITHMS=0
 175       OPT_SMTP=0 OPT_POP3=0 OPT_IMAP=0
 176       OPT_GSSAPI=0 OPT_NETRC=0 OPT_AGENT=0
 177    fi
 178    if feat_no SMTP && feat_no IMAP; then
 179       OPT_GSSAPI=0
 180    fi
 181
 182    if feat_no ICONV; then
 183       if feat_yes IMAP; then
 184          if feat_require IMAP; then
 185             msg 'ERROR: need ICONV for required feature IMAP'
 186             config_exit 13
 187          fi
 188          msg 'ERROR: disabling IMAP due to missing ICONV'
 189          OPT_IMAP=0
 190       fi
 191
 192       if feat_yes IDNA; then
 193          if feat_require IDNA; then
 194             msg 'ERROR: need ICONV for required feature IDNA'
 195             config_exit 13
 196          fi
 197          msg 'ERROR: disabling IDNA due to missing ICONV'
 198          OPT_IDNA=0
 199       fi
 200    fi
 201
 202    if feat_no MLE; then
 203       OPT_HISTORY=0 OPT_KEY_BINDINGS=0
 204    fi
 205
 206    # If we don't need MD5 leave it alone
 207    if feat_no SOCKETS; then
 208       OPT_MD5=0
 209    fi
 210
 211    if feat_no TERMCAP; then
 212       OPT_TERMCAP_VIA_TERMINFO=0
 213    fi
 214
 215    if feat_yes DEVEL; then
 216       OPT_DEBUG=1
 217    fi
 218 }
 219
 220 rc=./make.rc
 221 lst=./mk-config.lst
 222 ev=./mk-config.ev
 223 h=./mk-config.h h_name=mk-config.h
 224 mk=./mk-config.mk
 225
 226 newlst=./mk-nconfig.lst
 227 newmk=./mk-nconfig.mk
 228 newev=./mk-nconfig.ev
 229 newh=./mk-nconfig.h
 230 tmp0=___tmp
 231 tmp=./${tmp0}1$$
 232 tmp2=./${tmp0}2$$
 233
 234 ##  --  >8  - << OPTIONS | OS/CC >> -  8<  --  ##
 235
 236 # Note that potential duplicates in PATH, C_INCLUDE_PATH etc. will be cleaned
 237 # via path_check() later on once possible
 238
 239 # TODO cc_maxopt is brute simple, we should compile test program and dig real
 240 # compiler versions for known compilers, then be more specific
 241 cc_maxopt=100
 242 _CFLAGS= _LDFLAGS=
 243
 244 os_early_setup() {
 245    # We don't "have any utility": only path adjustments and such in here!
 246    i="${OS:-`uname -s`}"
 247
 248    if [ ${i} = SunOS ]; then
 249       msg 'SunOS / Solaris?  Applying some "early setup" rules ...'
 250       _os_early_setup_sunos
 251    fi
 252 }
 253
 254 _os_early_setup_sunos() {
 255    # According to standards(5), this is what we need to do
 256    if [ -d /usr/xpg4 ]; then :; else
 257       msg 'ERROR: On SunOS / Solaris we need /usr/xpg4 environment!  Sorry.'
 258       config_exit 1
 259    fi
 260    PATH="/usr/xpg4/bin:/usr/ccs/bin:/usr/bin:${PATH}"
 261    [ -d /usr/xpg6 ] && PATH="/usr/xpg6/bin:${PATH}"
 262    export PATH
 263 }
 264
 265 os_setup() {
 266    # OSENV ends up in *build-osenv*
 267    # OSFULLSPEC is used to recognize changes (i.e., machine type, updates etc.)
 268    : ${OS:=`uname -s | ${tr} '[A-Z]' '[a-z]'`}
 269    : ${OSENV:=`uname -srm`}
 270    : ${OSFULLSPEC:=`uname -a`}
 271    msg 'Operating system is %s' ${OS}
 272
 273    if [ ${OS} = sunos ]; then
 274       msg ' . have special SunOS / Solaris "setup" rules ...'
 275       _os_setup_sunos
 276    elif [ ${OS} = unixware ]; then
 277       msg ' . have special UnixWare environmental rules ...'
 278       if feat_yes AUTOCC && command -v cc >/dev/null 2>&1; then
 279          CC=cc
 280          feat_yes DEBUG && _CFLAGS='-v -Xa -g' || _CFLAGS='-Xa -O'
 281
 282          CFLAGS="${_CFLAGS} ${EXTRA_CFLAGS}"
 283          LDFLAGS="${_LDFLAGS} ${EXTRA_LDFLAGS}"
 284          export CC CFLAGS LDFLAGS
 285          OPT_AUTOCC=0 had_want_autocc=1 need_R_ldflags=-R
 286       fi
 287    elif [ -n "${VERBOSE}" ]; then
 288       msg ' . no special treatment for this system necessary or known'
 289    fi
 290
 291    # Sledgehammer: better set _GNU_SOURCE
 292    # And in general: oh, boy!
 293    OS_DEFINES="${OS_DEFINES}#define _GNU_SOURCE\n"
 294    #OS_DEFINES="${OS_DEFINES}#define _POSIX_C_SOURCE 200809L\n"
 295    #OS_DEFINES="${OS_DEFINES}#define _XOPEN_SOURCE 700\n"
 296    #[ ${OS} = darwin ] && OS_DEFINES="${OS_DEFINES}#define _DARWIN_C_SOURCE\n"
 297
 298    # On pkgsrc(7) systems automatically add /usr/pkg/*
 299    if [ -d /usr/pkg ]; then
 300       C_INCLUDE_PATH="${C_INCLUDE_PATH}:/usr/pkg/include"
 301       LD_LIBRARY_PATH="${LD_LIBRARY_PATH}:/usr/pkg/lib"
 302    fi
 303 }
 304
 305 _os_setup_sunos() {
 306    C_INCLUDE_PATH="/usr/xpg4/include:${C_INCLUDE_PATH}"
 307    LD_LIBRARY_PATH="/usr/xpg4/lib:${LD_LIBRARY_PATH}"
 308
 309    # Include packages
 310    if [ -d /opt/csw ]; then
 311       C_INCLUDE_PATH="${C_INCLUDE_PATH}:/opt/csw/include"
 312       LD_LIBRARY_PATH="${LD_LIBRARY_PATH}:/opt/csw/lib"
 313    fi
 314
 315    OS_DEFINES="${OS_DEFINES}#define __EXTENSIONS__\n"
 316    #OS_DEFINES="${OS_DEFINES}#define _POSIX_C_SOURCE 200112L\n"
 317
 318    [ -n "${cksum}" ] || cksum=/opt/csw/gnu/cksum
 319    if [ -x "${cksum}" ]; then :; else
 320       msg 'ERROR: Not an executable program: %s' "${cksum}"
 321       msg 'ERROR:   We need a CRC-32 cksum(1), as specified in POSIX.'
 322       msg 'ERROR:   However, we do so only for tests.'
 323       msg 'ERROR:   If that is ok, set "cksum=/usr/bin/true", then rerun'
 324       config_exit 1
 325    fi
 326
 327    if feat_yes AUTOCC; then
 328       if command -v cc >/dev/null 2>&1; then
 329          CC=cc
 330          feat_yes DEBUG && _CFLAGS="-v -Xa -g" || _CFLAGS="-Xa -O"
 331
 332          CFLAGS="${_CFLAGS} ${EXTRA_CFLAGS}"
 333          LDFLAGS="${_LDFLAGS} ${EXTRA_LDFLAGS}"
 334          export CC CFLAGS LDFLAGS
 335          OPT_AUTOCC=0 had_want_autocc=1 need_R_ldflags=-R
 336       else
 337          # Assume gcc(1), which supports -R for compat
 338          cc_maxopt=2 force_no_stackprot=1 need_R_ldflags=-Wl,-R
 339       fi
 340    fi
 341 }
 342
 343 # Check out compiler ($CC) and -flags ($CFLAGS)
 344 cc_setup() {
 345    # Even though it belongs into cc_flags we will try to compile and link
 346    # something, so ensure we have a clean state regarding CFLAGS/LDFLAGS or
 347    # EXTRA_CFLAGS/EXTRA_LDFLAGS
 348    if feat_no AUTOCC; then
 349       _cc_default
 350       # Ensure those don't do any harm
 351       EXTRA_CFLAGS= EXTRA_LDFLAGS=
 352       export EXTRA_CFLAGS EXTRA_LDFLAGS
 353       return
 354    else
 355       CFLAGS= LDFLAGS=
 356       export CFLAGS LDFLAGS
 357    fi
 358
 359    [ -n "${CC}" ] && [ "${CC}" != cc ] && { _cc_default; return; }
 360
 361    msg_nonl 'Searching for a usable C compiler .. $CC='
 362    if { i="`command -v clang`"; }; then
 363       CC=${i}
 364    elif { i="`command -v gcc`"; }; then
 365       CC=${i}
 366    elif { i="`command -v c99`"; }; then
 367       CC=${i}
 368    elif { i="`command -v tcc`"; }; then
 369       CC=${i}
 370    elif { i="`command -v pcc`"; }; then
 371       CC=${i}
 372    else
 373       if [ "${CC}" = cc ]; then
 374          :
 375       elif { i="`command -v c89`"; }; then
 376          CC=${i}
 377       else
 378          msg 'boing booom tschak'
 379          msg 'ERROR: I cannot find a compiler!'
 380          msg ' Neither of clang(1), gcc(1), tcc(1), pcc(1), c89(1) and c99(1).'
 381          msg ' Please set ${CC} environment variable, maybe ${CFLAGS}, rerun.'
 382          config_exit 1
 383       fi
 384    fi
 385    msg '%s' "${CC}"
 386    export CC
 387 }
 388
 389 _cc_default() {
 390    if [ -z "${CC}" ]; then
 391       msg 'To go on like you have chosen, please set $CC, rerun.'
 392       config_exit 1
 393    fi
 394
 395    if [ -z "${VERBOSE}" ] && [ -f ${lst} ] && feat_no DEBUG; then
 396       :
 397    else
 398       msg 'Using C compiler ${CC}=%s' "${CC}"
 399    fi
 400 }
 401
 402 cc_flags() {
 403    if feat_yes AUTOCC; then
 404       if [ -f ${lst} ] && feat_no DEBUG && [ -z "${VERBOSE}" ]; then
 405          cc_check_silent=1
 406          msg 'Detecting ${CFLAGS}/${LDFLAGS} for ${CC}=%s, just a second..' \
 407             "${CC}"
 408       else
 409          cc_check_silent=
 410          msg 'Testing usable ${CFLAGS}/${LDFLAGS} for ${CC}=%s' "${CC}"
 411       fi
 412
 413       i=`echo "${CC}" | ${awk} 'BEGIN{FS="/"}{print $NF}'`
 414       if { echo "${i}" | ${grep} tcc; } >/dev/null 2>&1; then
 415          msg ' . have special tcc(1) environmental rules ...'
 416          _cc_flags_tcc
 417       else
 418          # As of pcc CVS 2016-04-02, stack protection support is announced but
 419          # will break if used on Linux
 420          if { echo "${i}" | ${grep} pcc; } >/dev/null 2>&1; then
 421             force_no_stackprot=1
 422          fi
 423          _cc_flags_generic
 424       fi
 425
 426       feat_no DEBUG && _CFLAGS="-DNDEBUG ${_CFLAGS}"
 427       CFLAGS="${_CFLAGS} ${EXTRA_CFLAGS}"
 428       LDFLAGS="${_LDFLAGS} ${EXTRA_LDFLAGS}"
 429    else
 430       if feat_no DEBUG; then
 431          CFLAGS="-DNDEBUG ${CFLAGS}"
 432       fi
 433    fi
 434    msg ''
 435    export CFLAGS LDFLAGS
 436 }
 437
 438 _cc_flags_tcc() {
 439    __cflags=${_CFLAGS} __ldflags=${_LDFLAGS}
 440    _CFLAGS= _LDFLAGS=
 441
 442    cc_check -Wall
 443    cc_check -Wextra
 444    cc_check -pedantic
 445
 446    if feat_yes DEBUG; then
 447       # May have problems to find libtcc cc_check -b
 448       cc_check -g
 449    fi
 450
 451    if ld_check -Wl,-rpath =./ no; then
 452       need_R_ldflags=-Wl,-rpath=
 453       ld_check -Wl,--enable-new-dtags
 454       ld_runtime_flags # update!
 455    fi
 456
 457    _CFLAGS="${_CFLAGS} ${__cflags}" _LDFLAGS="${_LDFLAGS} ${__ldflags}"
 458    unset __cflags __ldflags
 459 }
 460
 461 _cc_flags_generic() {
 462    __cflags=${_CFLAGS} __ldflags=${_LDFLAGS}
 463    _CFLAGS= _LDFLAGS=
 464    feat_yes DEVEL && cc_check -std=c89 || cc_check -std=c99
 465
 466    # Check -g first since some others may rely upon -g / optim. level
 467    if feat_yes DEBUG; then
 468       cc_check -O
 469       cc_check -g
 470    elif [ ${cc_maxopt} -gt 2 ] && cc_check -O3; then
 471       :
 472    elif [ ${cc_maxopt} -gt 1 ] && cc_check -O2; then
 473       :
 474    elif [ ${cc_maxopt} -gt 0 ] && cc_check -O1; then
 475       :
 476    else
 477       cc_check -O
 478    fi
 479
 480    if feat_yes AMALGAMATION; then
 481       cc_check -pipe
 482    fi
 483
 484    #if feat_yes DEVEL && cc_check -Weverything; then
 485    #   :
 486    #else
 487       cc_check -Wall
 488       cc_check -Wextra
 489       cc_check -Wbad-function-cast
 490       cc_check -Wcast-align
 491       cc_check -Wcast-qual
 492       cc_check -Winit-self
 493       cc_check -Wmissing-prototypes
 494       cc_check -Wshadow
 495       cc_check -Wunused
 496       cc_check -Wwrite-strings
 497       cc_check -Wno-long-long
 498    #fi
 499    cc_check -pedantic
 500
 501    if feat_yes AMALGAMATION && feat_no DEVEL; then
 502       cc_check -Wno-unused-function
 503    fi
 504    feat_no DEVEL && cc_check -Wno-unused-result # XXX do right way (pragma too)
 505
 506    cc_check -fno-unwind-tables
 507    cc_check -fno-asynchronous-unwind-tables
 508    cc_check -fstrict-aliasing
 509    if cc_check -fstrict-overflow && feat_yes DEVEL; then
 510       cc_check -Wstrict-overflow=5
 511    fi
 512
 513    if feat_yes DEBUG || feat_yes FORCED_STACKPROT; then
 514       if [ -z "${force_no_stackprot}" ]; then
 515          if cc_check -fstack-protector-strong ||
 516                cc_check -fstack-protector-all; then
 517             cc_check -D_FORTIFY_SOURCE=2
 518          fi
 519       else
 520          msg 'Not checking for -fstack-protector compiler option,'
 521          msg 'since that caused errors in a "similar" configuration.'
 522          msg 'You may turn off OPT_AUTOCC and use your own settings, rerun'
 523       fi
 524    fi
 525
 526    # LD (+ dependend CC)
 527
 528    if feat_yes ASAN_ADDRESS; then
 529       _ccfg=${_CFLAGS}
 530       if cc_check -fsanitize=address &&
 531             ld_check -fsanitize=address; then
 532          :
 533       else
 534          feat_bail_required ASAN_ADDRESS
 535          _CFLAGS=${_ccfg}
 536       fi
 537    fi
 538
 539    if feat_yes ASAN_MEMORY; then
 540       _ccfg=${_CFLAGS}
 541       if cc_check -fsanitize=memory &&
 542             ld_check -fsanitize=memory &&
 543             cc_check -fsanitize-memory-track-origins=2 &&
 544             ld_check -fsanitize-memory-track-origins=2; then
 545          :
 546       else
 547          feat_bail_required ASAN_MEMORY
 548          _CFLAGS=${_ccfg}
 549       fi
 550    fi
 551
 552    ld_check -Wl,-z,relro
 553    ld_check -Wl,-z,now
 554    ld_check -Wl,-z,noexecstack
 555    if ld_check -Wl,-rpath =./ no; then
 556       need_R_ldflags=-Wl,-rpath=
 557       # Choose DT_RUNPATH (after $LD_LIBRARY_PATH) over DT_RPATH (before)
 558       ld_check -Wl,--enable-new-dtags
 559       ld_runtime_flags # update!
 560    elif ld_check -Wl,-R ./ no; then
 561       need_R_ldflags=-Wl,-R
 562       ld_check -Wl,--enable-new-dtags
 563       ld_runtime_flags # update!
 564    fi
 565
 566    # Address randomization
 567    _ccfg=${_CFLAGS}
 568    if cc_check -fPIE || cc_check -fpie; then
 569       ld_check -pie || _CFLAGS=${_ccfg}
 570    fi
 571    unset _ccfg
 572
 573    _CFLAGS="${_CFLAGS} ${__cflags}" _LDFLAGS="${_LDFLAGS} ${__ldflags}"
 574    unset __cflags __ldflags
 575 }
 576
 577 ##  --  >8  - <<OS/CC | SUPPORT FUNS>> -  8<  --  ##
 578
 579 ## Notes:
 580 ## - Heirloom sh(1) (and same origin) have _sometimes_ problems with ': >'
 581 ##   redirection, so use "printf '' >" instead
 582
 583 ## Very first: we undergo several states regarding I/O redirection etc.,
 584 ## but need to deal with option updates from within all.  Since all the
 585 ## option stuff should be above the scissor line, define utility functions
 586 ## and redefine them as necessary.
 587 ## And, since we have those functions, simply use them for whatever
 588
 589 config_exit() {
 590    exit ${1}
 591 }
 592
 593 msg() {
 594    fmt=${1}
 595    shift
 596    printf >&2 -- "${fmt}\\n" "${@}"
 597 }
 598
 599 msg_nonl() {
 600    fmt=${1}
 601    shift
 602    printf >&2 -- "${fmt}" "${@}"
 603 }
 604
 605 t1=ten10one1ten10one1
 606 if ( [ ${t1##*ten10} = one1 ] && [ ${t1#*ten10} = one1ten10one1 ] &&
 607       [ ${t1%%one1*} = ten10 ] && [ ${t1%one1*} = ten10one1ten10 ]
 608       ) > /dev/null 2>&1; then
 609    good_shell=1
 610 else
 611    unset good_shell
 612 fi
 613 unset t1
 614
 615 # We need some standard utilities
 616 unset -f command
 617 check_tool() {
 618    n=${1} i=${2} opt=${3:-0}
 619    # Evaluate, just in case user comes in with shell snippets (..well..)
 620    eval i="${i}"
 621    if type "${i}" >/dev/null 2>&1; then # XXX why have i type not command -v?
 622       [ -n "${VERBOSE}" ] && msg ' . ${%s} ... %s' "${n}" "${i}"
 623       eval ${n}=${i}
 624       return 0
 625    fi
 626    if [ ${opt} -eq 0 ]; then
 627       msg 'ERROR: no trace of utility %s' "${n}"
 628       config_exit 1
 629    fi
 630    return 1
 631 }
 632
 633 # Our feature check environment
 634 feat_val_no() {
 635    [ "x${1}" = x0 ] || [ "x${1}" = xn ] ||
 636    [ "x${1}" = xfalse ] || [ "x${1}" = xno ] || [ "x${1}" = xoff ]
 637 }
 638
 639 feat_val_yes() {
 640    [ "x${1}" = x1 ] || [ "x${1}" = xy ] ||
 641    [ "x${1}" = xtrue ] || [ "x${1}" = xyes ] || [ "x${1}" = xon ] ||
 642          [ "x${1}" = xrequire ]
 643 }
 644
 645 feat_val_require() {
 646    [ "x${1}" = xrequire ]
 647 }
 648
 649 _feat_check() {
 650    eval i=\$OPT_${1}
 651    i="`echo ${i} | ${tr} '[A-Z]' '[a-z]'`"
 652    if feat_val_no "${i}"; then
 653       return 1
 654    elif feat_val_yes "${i}"; then
 655       return 0
 656    else
 657       msg "ERROR: %s: 0/n/false/no/off or 1/y/true/yes/on/require, got: %s" \
 658          "${1}" "${i}"
 659       config_exit 11
 660    fi
 661 }
 662
 663 feat_yes() {
 664    _feat_check ${1}
 665 }
 666
 667 feat_no() {
 668    _feat_check ${1} && return 1
 669    return 0
 670 }
 671
 672 feat_require() {
 673    eval i=\$OPT_${1}
 674    i="`echo ${i} | ${tr} '[A-Z]' '[a-z]'`"
 675    [ "x${i}" = xrequire ] || [ "x${i}" = xrequired ]
 676 }
 677
 678 feat_bail_required() {
 679    if feat_require ${1}; then
 680       msg 'ERROR: feature OPT_%s is required but not available' "${1}"
 681       config_exit 13
 682    fi
 683    eval OPT_${1}=0
 684    option_update # XXX this is rather useless here (dependency chain..)
 685 }
 686
 687 option_parse() {
 688    # Parse one of our XOPTIONS* in $2 and assign the sh(1) compatible list of
 689    # options, without documentation, to $1
 690    j=\'
 691    i="`${awk} -v input=\"${2}\" '
 692       BEGIN{
 693          for(i = 0;;){
 694             voff = match(input, /[[:alnum:]_]+(='${j}'[^'${j}']+)?/)
 695             if(voff == 0)
 696                break
 697             v = substr(input, voff, RLENGTH)
 698             input = substr(input, voff + RLENGTH)
 699             doff = index(v, "=")
 700             if(doff > 0){
 701                d = substr(v, doff + 2, length(v) - doff - 1)
 702                v = substr(v, 1, doff - 1)
 703             }
 704             print v
 705          }
 706       }
 707       '`"
 708    eval ${1}=\"${i}\"
 709 }
 710
 711 option_doc_of() {
 712    # Return the "documentation string" for option $1, itself if none such
 713    j=\'
 714    ${awk} -v want="${1}" \
 715       -v input="${XOPTIONS_DETECT}${XOPTIONS}${XOPTIONS_XTRA}" '
 716    BEGIN{
 717       for(;;){
 718          voff = match(input, /[[:alnum:]_]+(='${j}'[^'${j}']+)?/)
 719          if(voff == 0)
 720             break
 721          v = substr(input, voff, RLENGTH)
 722          input = substr(input, voff + RLENGTH)
 723          doff = index(v, "=")
 724          if(doff > 0){
 725             d = substr(v, doff + 2, length(v) - doff - 1)
 726             v = substr(v, 1, doff - 1)
 727          }else
 728             d = v
 729          if(v == want){
 730             if(d != "-")
 731                print d
 732             exit
 733          }
 734       }
 735    }
 736    '
 737 }
 738
 739 option_join_rc() {
 740    # Join the values from make.rc into what currently is defined, not
 741    # overwriting yet existing settings
 742    ${rm} -f ${tmp}
 743    # We want read(1) to perform reverse solidus escaping in order to be able to
 744    # use multiline values in make.rc; the resulting sh(1)/sed(1) code was very
 745    # slow in VMs (see [fa2e248]), Aharon Robbins suggested the following
 746    < ${rc} ${awk} 'BEGIN{line = ""}{
 747       gsub(/^[[:space:]]+/, "", $0)
 748       gsub(/[[:space:]]+$/, "", $0)
 749       if(gsub(/\\$/, "", $0)){
 750          line = line $0
 751          next
 752       }else
 753          line = line $0
 754       if(index(line, "#") == 1){
 755          line = ""
 756       }else if(length(line)){
 757          print line
 758          line = ""
 759       }
 760    }' |
 761    while read line; do
 762       if [ -n "${good_shell}" ]; then
 763          i=${line%%=*}
 764       else
 765          i=`${awk} -v LINE="${line}" 'BEGIN{
 766             gsub(/=.*$/, "", LINE)
 767             print LINE
 768          }'`
 769       fi
 770       if [ "${i}" = "${line}" ]; then
 771          msg 'ERROR: invalid syntax in: %s' "${line}"
 772          continue
 773       fi
 774
 775       eval j="\$${i}" jx="\${${i}+x}"
 776       if [ -n "${j}" ] || [ "${jx}" = x ]; then
 777          : # Yet present
 778       else
 779          j=`${awk} -v LINE="${line}" 'BEGIN{
 780             gsub(/^[^=]*=/, "", LINE)
 781             gsub(/^\"*/, "", LINE)
 782             gsub(/\"*$/, "", LINE)
 783             print LINE
 784          }'`
 785       fi
 786       [ "${i}" = "DESTDIR" ] && continue
 787       echo "${i}=\"${j}\""
 788    done > ${tmp}
 789    # Reread the mixed version right now
 790    . ./${tmp}
 791 }
 792
 793 option_evaluate() {
 794    # Expand the option values, which may contain shell snippets
 795    ${rm} -f ${newlst} ${newmk} ${newh}
 796    exec 5<&0 6>&1 <${tmp} >${newlst}
 797    while read line; do
 798       z=
 799       if [ -n "${good_shell}" ]; then
 800          i=${line%%=*}
 801          [ "${i}" != "${i#OPT_}" ] && z=1
 802       else
 803          i=`${awk} -v LINE="${line}" 'BEGIN{
 804             gsub(/=.*$/, "", LINE);\
 805             print LINE
 806          }'`
 807          if echo "${i}" | ${grep} '^OPT_' >/dev/null 2>&1; then
 808             z=1
 809          fi
 810       fi
 811
 812       eval j=\$${i}
 813       if [ -n "${z}" ]; then
 814          j="`echo ${j} | ${tr} '[A-Z]' '[a-z]'`"
 815          if [ -z "${j}" ] || feat_val_no "${j}"; then
 816             j=0
 817             printf "   /* #undef ${i} */\n" >> ${newh}
 818          elif feat_val_yes "${j}"; then
 819             if feat_val_require "${j}"; then
 820                j=require
 821             else
 822                j=1
 823             fi
 824             printf "   /* #define ${i} */\n" >> ${newh}
 825          else
 826             msg 'ERROR: cannot parse <%s>' "${line}"
 827             config_exit 1
 828          fi
 829       else
 830          printf "#define ${i} \"${j}\"\n" >> ${newh}
 831       fi
 832       printf "${i} = ${j}\n" >> ${newmk}
 833       printf "${i}=${j}\n"
 834       eval "${i}=\"${j}\""
 835    done
 836    exec 0<&5 1>&6 5<&- 6<&-
 837 }
 838
 839 path_check() {
 840    # "path_check VARNAME" or "path_check VARNAME FLAG VARNAME"
 841    varname=${1} addflag=${2} flagvarname=${3}
 842    j=${IFS}
 843    IFS=:
 844    eval "set -- \$${1}"
 845    IFS=${j}
 846    j= k= y= z=
 847    for i
 848    do
 849       [ -z "${i}" ] && continue
 850       [ -d "${i}" ] || continue
 851       # Skip any fakeroot packager environment
 852       case "${i}" in *fakeroot*) continue;; esac
 853       if [ -n "${j}" ]; then
 854          if { z=${y}; echo "${z}"; } | ${grep} ":${i}:" >/dev/null 2>&1; then
 855             :
 856          else
 857             y="${y} :${i}:"
 858             j="${j}:${i}"
 859             [ -n "${addflag}" ] && k="${k} ${addflag}${i}"
 860          fi
 861       else
 862          y=" :${i}:"
 863          j="${i}"
 864          [ -n "${addflag}" ] && k="${addflag}${i}"
 865       fi
 866    done
 867    eval "${varname}=\"${j}\""
 868    [ -n "${addflag}" ] && eval "${flagvarname}=\"${k}\""
 869    unset varname
 870 }
 871
 872 ld_runtime_flags() {
 873    if [ -n "${need_R_ldflags}" ]; then
 874       i=${IFS}
 875       IFS=:
 876       set -- ${LD_LIBRARY_PATH}
 877       IFS=${i}
 878       for i
 879       do
 880          LDFLAGS="${LDFLAGS} ${need_R_ldflags}${i}"
 881          _LDFLAGS="${_LDFLAGS} ${need_R_ldflags}${i}"
 882       done
 883       export LDFLAGS
 884    fi
 885    # Disable it for a possible second run.
 886    need_R_ldflags=
 887 }
 888
 889 cc_check() {
 890    [ -n "${cc_check_silent}" ] || msg_nonl ' . CC %s .. ' "${1}"
 891    if "${CC}" ${INCS} \
 892          ${_CFLAGS} ${1} ${EXTRA_CFLAGS} ${_LDFLAGS} ${EXTRA_LDFLAGS} \
 893          -o ${tmp2} ${tmp}.c ${LIBS} >/dev/null 2>&1; then
 894       _CFLAGS="${_CFLAGS} ${1}"
 895       [ -n "${cc_check_silent}" ] || msg 'yes'
 896       return 0
 897    fi
 898    [ -n "${cc_check_silent}" ] || msg 'no'
 899    return 1
 900 }
 901
 902 ld_check() {
 903    # $1=option [$2=option argument] [$3=if set, shall NOT be added to _LDFLAGS]
 904    [ -n "${cc_check_silent}" ] || msg_nonl ' . LD %s .. ' "${1}"
 905    if "${CC}" ${INCS} ${_CFLAGS} ${_LDFLAGS} ${1}${2} ${EXTRA_LDFLAGS} \
 906          -o ${tmp2} ${tmp}.c ${LIBS} >/dev/null 2>&1; then
 907       [ -n "${3}" ] || _LDFLAGS="${_LDFLAGS} ${1}"
 908       [ -n "${cc_check_silent}" ] || msg 'yes'
 909       return 0
 910    fi
 911    [ -n "${cc_check_silent}" ] || msg 'no'
 912    return 1
 913 }
 914
 915 _check_preface() {
 916    variable=$1 topic=$2 define=$3
 917
 918    echo '**********'
 919    msg_nonl ' . %s ... ' "${topic}"
 920    echo "/* checked ${topic} */" >> ${h}
 921    ${rm} -f ${tmp} ${tmp}.o
 922    echo '*** test program is'
 923    { echo '#include <'"${h_name}"'>'; cat; } | ${tee} ${tmp}.c
 924    #echo '*** the preprocessor generates'
 925    #${make} -f ${makefile} ${tmp}.x
 926    #${cat} ${tmp}.x
 927    echo '*** results are'
 928 }
 929
 930 without_check() {
 931    yesno=$1 variable=$2 topic=$3 define=$4 libs=$5 incs=$6
 932
 933    echo '**********'
 934    msg_nonl ' . %s ... ' "${topic}"
 935
 936    echo '*** enforced unchecked results are'
 937    if feat_val_yes ${yesno}; then
 938       if [ -n "${incs}" ] || [ -n "${libs}" ]; then
 939          echo "*** adding INCS<${incs}> LIBS<${libs}>"
 940          LIBS="${LIBS} ${libs}"
 941          echo "${libs}" >> ${lib}
 942          INCS="${INCS} ${incs}"
 943          echo "${incs}" >> ${inc}
 944       fi
 945       msg 'yes (deduced)'
 946       echo "${define}" >> ${h}
 947       eval have_${variable}=yes
 948       return 0
 949    else
 950       echo "/* ${define} */" >> ${h}
 951       msg 'no (deduced)'
 952       eval unset have_${variable}
 953       return 1
 954    fi
 955 }
 956
 957 compile_check() {
 958    variable=$1 topic=$2 define=$3
 959
 960    _check_preface "${variable}" "${topic}" "${define}"
 961
 962    if ${make} -f ${makefile} XINCS="${INCS}" \
 963             CFLAGS="${CFLAGS}" LDFLAGS="${LDFLAGS}" \
 964             ./${tmp}.o &&
 965          [ -f ./${tmp}.o ]; then
 966       msg 'yes'
 967       echo "${define}" >> ${h}
 968       eval have_${variable}=yes
 969       return 0
 970    else
 971       echo "/* ${define} */" >> ${h}
 972       msg 'no'
 973       eval unset have_${variable}
 974       return 1
 975    fi
 976 }
 977
 978 _link_mayrun() {
 979    run=$1 variable=$2 topic=$3 define=$4 libs=$5 incs=$6
 980
 981    _check_preface "${variable}" "${topic}" "${define}"
 982
 983    if feat_yes CROSS_BUILD; then
 984       if [ ${run} = 1 ]; then
 985          run=0
 986       fi
 987    fi
 988
 989    if ${make} -f ${makefile} XINCS="${INCS} ${incs}" \
 990             CFLAGS="${CFLAGS}" LDFLAGS="${LDFLAGS}" \
 991             XLIBS="${LIBS} ${libs}" \
 992             ./${tmp} &&
 993          [ -f ./${tmp} ] &&
 994          { [ ${run} -eq 0 ] || ./${tmp}; }; then
 995       echo "*** adding INCS<${incs}> LIBS<${libs}>; executed: ${run}"
 996       msg 'yes'
 997       echo "${define}" >> ${h}
 998       LIBS="${LIBS} ${libs}"
 999       echo "${libs}" >> ${lib}
1000       INCS="${INCS} ${incs}"
1001       echo "${incs}" >> ${inc}
1002       eval have_${variable}=yes
1003       return 0
1004    else
1005       msg 'no'
1006       echo "/* ${define} */" >> ${h}
1007       eval unset have_${variable}
1008       return 1
1009    fi
1010 }
1011
1012 link_check() {
1013    _link_mayrun 0 "${1}" "${2}" "${3}" "${4}" "${5}"
1014 }
1015
1016 run_check() {
1017    _link_mayrun 1 "${1}" "${2}" "${3}" "${4}" "${5}"
1018 }
1019
1020 xrun_check() {
1021    _link_mayrun 2 "${1}" "${2}" "${3}" "${4}" "${5}"
1022 }
1023
1024 feat_def() {
1025    if feat_yes ${1}; then
1026       echo '#define HAVE_'${1}'' >> ${h}
1027       return 0
1028    else
1029       echo '/* OPT_'${1}'=0 */' >> ${h}
1030       return 1
1031    fi
1032 }
1033
1034 squeeze_em() {
1035    < "${1}" > "${2}" ${awk} \
1036    'BEGIN {ORS = " "} /^[^#]/ {print} {next} END {ORS = ""; print "\n"}'
1037 }
1038
1039 ##  --  >8  - <<SUPPORT FUNS | RUNNING>> -  8<  --  ##
1040
1041 # First of all, create new configuration and check whether it changed
1042
1043 # Very easy checks for the operating system in order to be able to adjust paths
1044 # or similar very basic things which we need to be able to go at all
1045 os_early_setup
1046
1047 # Check those tools right now that we need before including $rc
1048 msg 'Checking for basic utility set'
1049 check_tool awk "${awk:-`command -v awk`}"
1050 check_tool rm "${rm:-`command -v rm`}"
1051 check_tool tr "${tr:-`command -v tr`}"
1052
1053 # Initialize the option set
1054 msg_nonl 'Setting up configuration options ... '
1055 option_setup
1056 msg 'done'
1057
1058 # Include $rc, but only take from it what wasn't overwritten by the user from
1059 # within the command line or from a chosen fixed CONFIG=
1060 # Note we leave alone the values
1061 trap "exit 1" HUP INT TERM
1062 trap "${rm} -f ${tmp}" EXIT
1063
1064 msg_nonl 'Joining in %s ... ' ${rc}
1065 option_join_rc
1066 msg 'done'
1067
1068 # We need to know about that now, in order to provide utility overwrites etc.
1069 os_setup
1070
1071 msg 'Checking for remaining set of utilities'
1072 check_tool grep "${grep:-`command -v grep`}"
1073
1074 # Before we step ahead with the other utilities perform a path cleanup first.
1075 path_check PATH
1076
1077 # awk(1) above
1078 check_tool cat "${cat:-`command -v cat`}"
1079 check_tool chmod "${chmod:-`command -v chmod`}"
1080 check_tool cp "${cp:-`command -v cp`}"
1081 check_tool cmp "${cmp:-`command -v cmp`}"
1082 # grep(1) above
1083 check_tool mkdir "${mkdir:-`command -v mkdir`}"
1084 check_tool mv "${mv:-`command -v mv`}"
1085 # rm(1) above
1086 check_tool sed "${sed:-`command -v sed`}"
1087 check_tool sort "${sort:-`command -v sort`}"
1088 check_tool tee "${tee:-`command -v tee`}"
1089
1090 check_tool chown "${chown:-`command -v chown`}" 1 ||
1091    check_tool chown "/sbin/chown" 1 ||
1092    check_tool chown "/usr/sbin/chown"
1093
1094 check_tool make "${MAKE:-`command -v make`}"
1095 MAKE=${make}
1096 check_tool strip "${STRIP:-`command -v strip`}" 1 &&
1097    HAVE_STRIP=1 || HAVE_STRIP=0
1098
1099 # For ./cc-test.sh only
1100 check_tool cksum "${cksum:-`command -v cksum`}"
1101
1102 # Update OPT_ options now, in order to get possible inter-dependencies right
1103 option_update
1104
1105 # (No functions since some shells loose non-exported variables in traps)
1106 trap "trap \"\" HUP INT TERM; exit 1" HUP INT TERM
1107 trap "trap \"\" HUP INT TERM EXIT;\
1108    ${rm} -rf ${newlst} ${tmp0}.* ${tmp0}* ${newmk} ${newev} ${newh}" EXIT
1109
1110 # Our configuration options may at this point still contain shell snippets,
1111 # we need to evaluate them in order to get them expanded, and we need those
1112 # evaluated values not only in our new configuration file, but also at hand..
1113 msg_nonl 'Evaluating all configuration items ... '
1114 option_evaluate
1115 msg 'done'
1116
1117 # Add the known utility and some other variables
1118 printf "#define VAL_UAGENT \"${VAL_SID}${VAL_MAILX}\"\n" >> ${newh}
1119 printf "VAL_UAGENT = ${VAL_SID}${VAL_MAILX}\n" >> ${newmk}
1120
1121 printf "#define VAL_PRIVSEP \"${VAL_SID}${VAL_MAILX}-privsep\"\n" >> ${newh}
1122 printf "VAL_PRIVSEP = \$(VAL_UAGENT)-privsep\n" >> ${newmk}
1123 if feat_yes DOTLOCK; then
1124    printf "OPTIONAL_PRIVSEP = \$(VAL_PRIVSEP)\n" >> ${newmk}
1125 else
1126    printf "OPTIONAL_PRIVSEP =\n" >> ${newmk}
1127 fi
1128
1129 for i in \
1130       awk cat chmod chown cp cmp grep mkdir mv rm sed sort tee tr \
1131       MAKE MAKEFLAGS make SHELL strip \
1132       cksum; do
1133    eval j=\$${i}
1134    printf "${i} = ${j}\n" >> ${newmk}
1135    printf "${i}=${j}\n" >> ${newlst}
1136    printf "${i}=\"${j}\";export ${i}; " >> ${newev}
1137 done
1138 printf "\n" >> ${newev}
1139
1140 # Build a basic set of INCS and LIBS according to user environment.
1141 path_check C_INCLUDE_PATH -I _INCS
1142 INCS="${INCS} ${_INCS}"
1143 path_check LD_LIBRARY_PATH -L _LIBS
1144 LIBS="${LIBS} ${_LIBS}"
1145 unset _INCS _LIBS
1146 export C_INCLUDE_PATH LD_LIBRARY_PATH
1147
1148 # Some environments need runtime path flags to be able to go at all
1149 ld_runtime_flags
1150
1151 ## Detect CC, whether we can use it, and possibly which CFLAGS we can use
1152
1153 cc_setup
1154
1155 ${cat} > ${tmp}.c << \!
1156 #include <stdio.h>
1157 #include <string.h>
1158 static void doit(char const *s);
1159 int
1160 main(int argc, char **argv){
1161    (void)argc;
1162    (void)argv;
1163    doit("Hello world");
1164    return 0;
1165 }
1166 static void
1167 doit(char const *s){
1168    char buf[12];
1169    memcpy(buf, s, strlen(s) +1);
1170    puts(s);
1171 }
1172 !
1173
1174 if "${CC}" ${INCS} ${CFLAGS} ${EXTRA_CFLAGS} ${LDFLAGS} ${EXTRA_LDFLAGS} \
1175       -o ${tmp2} ${tmp}.c ${LIBS}; then
1176    :
1177 else
1178    msg 'ERROR: i cannot compile a "Hello world" via'
1179    msg '   %s' \
1180    "${CC} ${INCS} ${CFLAGS} ${EXTRA_CFLAGS} ${LDFLAGS} ${EXTRA_LDFLAGS} ${LIBS}"
1181    msg 'ERROR:   Please read INSTALL, rerun'
1182    config_exit 1
1183 fi
1184
1185 # This may also update ld_runtime_flags() (again)
1186 cc_flags
1187
1188 for i in \
1189       INCS LIBS \
1190       ; do
1191    eval j=\$${i}
1192    printf -- "${i}=${j}\n" >> ${newlst}
1193 done
1194 for i in \
1195       CC \
1196       CFLAGS \
1197       LDFLAGS \
1198       PATH C_INCLUDE_PATH LD_LIBRARY_PATH \
1199       OSFULLSPEC \
1200       ; do
1201    eval j=\$${i}
1202    printf -- "${i} = ${j}\n" >> ${newmk}
1203    printf -- "${i}=${j}\n" >> ${newlst}
1204 done
1205
1206 # Now finally check whether we already have a configuration and if so, whether
1207 # all those parameters are still the same.. or something has actually changed
1208 if [ -f ${lst} ] && ${cmp} ${newlst} ${lst} >/dev/null 2>&1; then
1209    echo 'Configuration is up-to-date'
1210    exit 0
1211 elif [ -f ${lst} ]; then
1212    echo 'Configuration has been updated..'
1213    ( eval "${MAKE} -f ./mk-config.mk clean" )
1214    echo
1215 else
1216    echo 'Shiny configuration..'
1217 fi
1218
1219 # Time to redefine helper 1
1220 config_exit() {
1221    ${rm} -f ${lst} ${h} ${mk}
1222    exit ${1}
1223 }
1224
1225 ${mv} -f ${newlst} ${lst}
1226 ${mv} -f ${newev} ${ev}
1227 ${mv} -f ${newh} ${h}
1228 ${mv} -f ${newmk} ${mk}
1229
1230 if [ -z "${VERBOSE}" ]; then
1231    printf -- "ECHO_CC = @echo '  'CC \$(@);\n" >> ${mk}
1232    printf -- "ECHO_LINK = @echo '  'LINK \$(@);\n" >> ${mk}
1233    printf -- "ECHO_GEN = @echo '  'GEN \$(@);\n" >> ${mk}
1234    printf -- "ECHO_TEST = @\n" >> ${mk}
1235    printf -- "ECHO_CMD = @echo '  CMD';\n" >> ${mk}
1236    printf -- "ECHO_BLOCK_BEGIN = @( \n" >> ${mk}
1237    printf -- "ECHO_BLOCK_END = ) >/dev/null\n" >> ${mk}
1238 fi
1239
1240 ## Compile and link checking
1241
1242 tmp3=./${tmp0}3$$
1243 log=./mk-config.log
1244 lib=./mk-config.lib
1245 inc=./mk-config.inc
1246 makefile=./${tmp0}.mk
1247
1248 # (No function since some shells loose non-exported variables in traps)
1249 trap "trap \"\" HUP INT TERM;\
1250    ${rm} -f ${lst} ${h} ${mk} ${lib} ${inc}; exit 1" HUP INT TERM
1251 trap "trap \"\" HUP INT TERM EXIT;\
1252    ${rm} -rf ${tmp0}.* ${tmp0}*" EXIT
1253
1254 # Time to redefine helper 2
1255 msg() {
1256    fmt=${1}
1257    shift
1258    printf "*** ${fmt}\\n" "${@}"
1259    printf -- "${fmt}\\n" "${@}" >&5
1260 }
1261 msg_nonl() {
1262    fmt=${1}
1263    shift
1264    printf "*** ${fmt}\\n" "${@}"
1265    printf -- "${fmt}" "${@}" >&5
1266 }
1267
1268 # !!
1269 exec 5>&2 > ${log} 2>&1
1270
1271 echo "${LIBS}" > ${lib}
1272 echo "${INCS}" > ${inc}
1273 ${cat} > ${makefile} << \!
1274 .SUFFIXES: .o .c .x .y
1275 .c.o:
1276         $(CC) -I./ $(XINCS) $(CFLAGS) -c $(<)
1277 .c.x:
1278         $(CC) -I./ $(XINCS) -E $(<) > $(@)
1279 .c:
1280         $(CC) -I./ $(XINCS) $(CFLAGS) $(LDFLAGS) -o $(@) $(<) $(XLIBS)
1281 !
1282
1283 ## Generics
1284
1285 # May be multiline..
1286 echo >> ${h}
1287 [ -n "${OS_DEFINES}" ] && printf -- "${OS_DEFINES}" >> ${h}
1288 echo '#define VAL_BUILD_OS "'"${OS}"'"' >> ${h}
1289 echo '#define VAL_BUILD_OSENV "'"${OSENV}"'"' >> ${h}
1290
1291 # Generate n_err_number OS mappings
1292 (
1293    feat_yes DEVEL && NV= || NV=noverbose
1294    TARGET="${h}" awk="${awk}" ./make-errors.sh ${NV} config
1295 ) |
1296    xrun_check oserrno 'OS error mapping table generated' || config_exit 1
1297
1298 feat_def ALWAYS_UNICODE_LOCALE
1299 feat_def AMALGAMATION
1300 feat_def CROSS_BUILD
1301 feat_def DOCSTRINGS
1302 feat_def ERRORS
1303
1304 feat_def ASAN_ADDRESS
1305 feat_def ASAN_MEMORY
1306 feat_def DEBUG
1307 feat_def DEVEL
1308 feat_def NYD2
1309 feat_def NOMEMDBG
1310
1311 if xrun_check inline 'inline functions' \
1312    '#define HAVE_INLINE
1313    #define n_INLINE static inline' << \!
1314 static inline int ilf(int i){return ++i;}
1315 int main(void){return ilf(-1);}
1316 !
1317 then
1318    :
1319 elif xrun_check inline 'inline functions (via __inline)' \
1320    '#define HAVE_INLINE
1321    #define n_INLINE static __inline' << \!
1322 static __inline int ilf(int i){return ++i;}
1323 int main(void){return ilf(-1);}
1324 !
1325 then
1326    :
1327 fi
1328
1329 ## Test for "basic" system-calls / functionality that is used by all parts
1330 ## of our program.  Once this is done fork away BASE_LIBS and other BASE_*
1331 ## macros to be used by only the subprograms (potentially).
1332
1333 if run_check clock_gettime 'clock_gettime(2)' \
1334    '#define HAVE_CLOCK_GETTIME' << \!
1335 #include <time.h>
1336 # include <errno.h>
1337 int main(void){
1338    struct timespec ts;
1339
1340    if(!clock_gettime(CLOCK_REALTIME, &ts) || errno != ENOSYS)
1341       return 0;
1342    return 1;
1343 }
1344 !
1345 then
1346    :
1347 elif run_check clock_gettime 'clock_gettime(2) (via -lrt)' \
1348    '#define HAVE_CLOCK_GETTIME' '-lrt' << \!
1349 #include <time.h>
1350 # include <errno.h>
1351 int main(void){
1352    struct timespec ts;
1353
1354    if(!clock_gettime(CLOCK_REALTIME, &ts) || errno != ENOSYS)
1355       return 0;
1356    return 1;
1357 }
1358 !
1359 then
1360    :
1361 elif run_check gettimeofday 'gettimeofday(2)' \
1362    '#define HAVE_GETTIMEOFDAY' << \!
1363 #include <stdio.h> /* For C89 NULL */
1364 #include <sys/time.h>
1365 # include <errno.h>
1366 int main(void){
1367    struct timeval tv;
1368
1369    if(!gettimeofday(&tv, NULL) || errno != ENOSYS)
1370       return 0;
1371    return 1;
1372 }
1373 !
1374 then
1375    :
1376 else
1377    have_no_subsecond_time=1
1378 fi
1379
1380 if run_check nanosleep 'nanosleep(2)' \
1381    '#define HAVE_NANOSLEEP' << \!
1382 #include <time.h>
1383 # include <errno.h>
1384 int main(void){
1385    struct timespec ts;
1386
1387    ts.tv_sec = 1;
1388    ts.tv_nsec = 100000;
1389    if(!nanosleep(&ts, NULL) || errno != ENOSYS)
1390       return 0;
1391    return 1;
1392 }
1393 !
1394 then
1395    :
1396 elif run_check nanosleep 'nanosleep(2) (via -lrt)' \
1397    '#define HAVE_NANOSLEEP' '-lrt' << \!
1398 #include <time.h>
1399 # include <errno.h>
1400 int main(void){
1401    struct timespec ts;
1402
1403    ts.tv_sec = 1;
1404    ts.tv_nsec = 100000;
1405    if(!nanosleep(&ts, NULL) || errno != ENOSYS)
1406       return 0;
1407    return 1;
1408 }
1409 !
1410 then
1411    :
1412 # link_check is enough for this, that function is so old, trust the proto
1413 elif link_check sleep 'sleep(3)' \
1414    '#define HAVE_SLEEP' << \!
1415 #include <unistd.h>
1416 # include <errno.h>
1417 int main(void){
1418    if(!sleep(1) || errno != ENOSYS)
1419       return 0;
1420    return 1;
1421 }
1422 !
1423 then
1424    :
1425 else
1426    msg 'ERROR: we require one of nanosleep(2) and sleep(3).'
1427    config_exit 1
1428 fi
1429
1430 if run_check userdb 'gete?[gu]id(2), getpwuid(3), getpwnam(3)' << \!
1431 #include <pwd.h>
1432 #include <unistd.h>
1433 # include <errno.h>
1434 int main(void){
1435    struct passwd *pw;
1436    gid_t gid;
1437    uid_t uid;
1438
1439    if((gid = getgid()) != 0)
1440       gid = getegid();
1441    if((uid = getuid()) != 0)
1442       uid = geteuid();
1443    if((pw = getpwuid(uid)) == NULL && errno == ENOSYS)
1444       return 1;
1445    if((pw = getpwnam("root")) == NULL && errno == ENOSYS)
1446       return 1;
1447    return 0;
1448 }
1449 !
1450 then
1451    :
1452 else
1453    msg 'ERROR: we require user and group info / database searches.'
1454    msg 'That much Unix we indulge ourselfs.'
1455    config_exit 1
1456 fi
1457
1458 if link_check ftruncate 'ftruncate(2)' \
1459    '#define HAVE_FTRUNCATE' << \!
1460 #include <unistd.h>
1461 #include <sys/types.h>
1462 int main(void){
1463    return (ftruncate(0, 0) != 0);
1464 }
1465 !
1466 then
1467    :
1468 else
1469    msg 'ERROR: we require the ftruncate(2) system call.'
1470    config_exit 1
1471 fi
1472
1473 if run_check sa_restart 'SA_RESTART (for sigaction(2))' << \!
1474 #include <signal.h>
1475 # include <errno.h>
1476 int main(void){
1477    struct sigaction nact, oact;
1478
1479    nact.sa_handler = SIG_DFL;
1480    sigemptyset(&nact.sa_mask);
1481    nact.sa_flags = SA_RESTART;
1482    return !(!sigaction(SIGCHLD, &nact, &oact) || errno != ENOSYS);
1483 }
1484 !
1485 then
1486    :
1487 else
1488    msg 'ERROR: we (yet) require the SA_RESTART flag for sigaction(2).'
1489    config_exit 1
1490 fi
1491
1492 if link_check snprintf 'snprintf(3)' << \!
1493 #include <stdio.h>
1494 int main(void){
1495    char b[20];
1496
1497    snprintf(b, sizeof b, "%s", "string");
1498    return 0;
1499 }
1500 !
1501 then
1502    :
1503 else
1504    msg 'ERROR: we require the snprintf(3) function.'
1505    config_exit 1
1506 fi
1507
1508 if link_check environ 'environ(3)' << \!
1509 #include <stdio.h> /* For C89 NULL */
1510 int main(void){
1511    extern char **environ;
1512
1513    return environ[0] == NULL;
1514 }
1515 !
1516 then
1517    :
1518 else
1519    msg 'ERROR: we require the environ(3) array for subprocess control.'
1520    config_exit 1
1521 fi
1522
1523 if link_check setenv '(un)?setenv(3)' '#define HAVE_SETENV' << \!
1524 #include <stdlib.h>
1525 int main(void){
1526    setenv("s-mailx", "i want to see it cute!", 1);
1527    unsetenv("s-mailx");
1528    return 0;
1529 }
1530 !
1531 then
1532    :
1533 elif link_check setenv 'putenv(3)' '#define HAVE_PUTENV' << \!
1534 #include <stdlib.h>
1535 int main(void){
1536    putenv("s-mailx=i want to see it cute!");
1537    return 0;
1538 }
1539 !
1540 then
1541    :
1542 else
1543    msg 'ERROR: we require either the setenv(3) or putenv(3) functions.'
1544    config_exit 1
1545 fi
1546
1547 if link_check termios 'termios.h and tc*(3) family' << \!
1548 #include <termios.h>
1549 int main(void){
1550    struct termios tios;
1551
1552    tcgetattr(0, &tios);
1553    tcsetattr(0, TCSANOW | TCSADRAIN | TCSAFLUSH, &tios);
1554    return 0;
1555 }
1556 !
1557 then
1558    :
1559 else
1560    msg 'ERROR: we require termios.h and the tc*() family of functions.'
1561    msg 'That much Unix we indulge ourselfs.'
1562    config_exit 1
1563 fi
1564
1565 ## optional stuff
1566
1567 if link_check vsnprintf 'vsnprintf(3)' << \!
1568 #include <stdarg.h>
1569 #include <stdio.h>
1570 static void dome(char *buf, size_t blen, ...){
1571    va_list ap;
1572
1573    va_start(ap, blen);
1574    vsnprintf(buf, blen, "%s", ap);
1575    va_end(ap);
1576 }
1577 int main(void){
1578    char b[20];
1579
1580    dome(b, sizeof b, "string");
1581    return 0;
1582 }
1583 !
1584 then
1585    :
1586 else
1587    feat_bail_required ERRORS
1588 fi
1589
1590 if [ "${have_vsnprintf}" = yes ]; then
1591    __va_copy() {
1592       link_check va_copy "va_copy(3) (as ${2})" \
1593          "#define HAVE_N_VA_COPY
1594 #define n_va_copy ${2}" <<_EOT
1595 #include <stdarg.h>
1596 #include <stdio.h>
1597 #if ${1}
1598 # if defined __va_copy && !defined va_copy
1599 #  define va_copy __va_copy
1600 # endif
1601 #endif
1602 static void dome2(char *buf, size_t blen, va_list src){
1603    va_list ap;
1604
1605    va_copy(ap, src);
1606    vsnprintf(buf, blen, "%s", ap);
1607    va_end(ap);
1608 }
1609 static void dome(char *buf, size_t blen, ...){
1610    va_list ap;
1611
1612    va_start(ap, blen);
1613    dome2(buf, blen, ap);
1614    va_end(ap);
1615 }
1616 int main(void){
1617    char b[20];
1618
1619    dome(b, sizeof b, "string");
1620    return 0;
1621 }
1622 _EOT
1623    }
1624    __va_copy 0 va_copy || __va_copy 1 __va_copy
1625 fi
1626
1627 run_check pathconf 'f?pathconf(2)' '#define HAVE_PATHCONF' << \!
1628 #include <unistd.h>
1629 #include <errno.h>
1630 int main(void){
1631    int rv = 0;
1632
1633    errno = 0;
1634    rv |= !(pathconf(".", _PC_NAME_MAX) >= 0 || errno == 0 || errno != ENOSYS);
1635    errno = 0;
1636    rv |= !(pathconf(".", _PC_PATH_MAX) >= 0 || errno == 0 || errno != ENOSYS);
1637
1638    /* Only link check */
1639    fpathconf(0, _PC_NAME_MAX);
1640
1641    return rv;
1642 }
1643 !
1644
1645 run_check pipe2 'pipe2(2)' '#define HAVE_PIPE2' << \!
1646 #include <fcntl.h>
1647 #include <unistd.h>
1648 # include <errno.h>
1649 int main(void){
1650    int fds[2];
1651
1652    if(!pipe2(fds, O_CLOEXEC) || errno != ENOSYS)
1653       return 0;
1654    return 1;
1655 }
1656 !
1657
1658 # We use this only then for now (need NOW+1)
1659 run_check utimensat 'utimensat(2)' '#define HAVE_UTIMENSAT' << \!
1660 #include <fcntl.h> /* For AT_* */
1661 #include <sys/stat.h>
1662 # include <errno.h>
1663 int main(void){
1664    struct timespec ts[2];
1665
1666    ts[0].tv_nsec = UTIME_NOW;
1667    ts[1].tv_nsec = UTIME_OMIT;
1668    if(!utimensat(AT_FDCWD, "", ts, 0) || errno != ENOSYS)
1669       return 0;
1670    return 1;
1671 }
1672 !
1673
1674 ##
1675
1676 # XXX Add POSIX check once standardized
1677 if link_check posix_random 'arc4random(3)' '#define HAVE_POSIX_RANDOM 0' << \!
1678 #include <stdlib.h>
1679 int main(void){
1680    arc4random();
1681    return 0;
1682 }
1683 !
1684 then
1685    :
1686 elif link_check getrandom 'getrandom(2) (in sys/random.h)' \
1687       '#define HAVE_GETRANDOM(B,S) getrandom(B, S, 0)
1688       #define HAVE_GETRANDOM_HEADER <sys/random.h>' <<\!
1689 #include <sys/random.h>
1690 int main(void){
1691    char buf[256];
1692    getrandom(buf, sizeof buf, 0);
1693    return 0;
1694 }
1695 !
1696 then
1697    :
1698 elif link_check getrandom 'getrandom(2) (via syscall(2))' \
1699       '#define HAVE_GETRANDOM(B,S) syscall(SYS_getrandom, B, S, 0)
1700       #define HAVE_GETRANDOM_HEADER <sys/syscall.h>' <<\!
1701 #include <sys/syscall.h>
1702 int main(void){
1703    char buf[256];
1704    syscall(SYS_getrandom, buf, sizeof buf, 0);
1705    return 0;
1706 }
1707 !
1708 then
1709    :
1710 elif [ -n "${have_no_subsecond_time}" ]; then
1711    msg 'ERROR: %s %s' 'without a native random' \
1712       'one of clock_gettime(2) and gettimeofday(2) is required.'
1713    config_exit 1
1714 fi
1715
1716
1717 link_check putc_unlocked 'putc_unlocked(3)' '#define HAVE_PUTC_UNLOCKED' <<\!
1718 #include <stdio.h>
1719 int main(void){
1720    putc_unlocked('@', stdout);
1721    return 0;
1722 }
1723 !
1724
1725 link_check fchdir 'fchdir(3)' '#define HAVE_FCHDIR' << \!
1726 #include <unistd.h>
1727 int main(void){
1728    fchdir(0);
1729    return 0;
1730 }
1731 !
1732
1733 if run_check realpath 'realpath(3)' '#define HAVE_REALPATH' << \!
1734 #include <stdlib.h>
1735 int main(void){
1736    char x_buf[4096], *x = realpath(".", x_buf);
1737
1738    return (x != NULL) ? 0 : 1;
1739 }
1740 !
1741 then
1742    if run_check realpath_malloc 'realpath(3) takes NULL' \
1743          '#define HAVE_REALPATH_NULL' << \!
1744 #include <stdlib.h>
1745 int main(void){
1746    char *x = realpath(".", NULL);
1747
1748    if(x != NULL)
1749       free(x);
1750    return (x != NULL) ? 0 : 1;
1751 }
1752 !
1753    then
1754       :
1755    fi
1756 fi
1757
1758 ## optional and selectable
1759
1760 if feat_yes DOTLOCK; then
1761    if run_check readlink 'readlink(2)' << \!
1762 #include <unistd.h>
1763 # include <errno.h>
1764 int main(void){
1765    char buf[128];
1766
1767    if(!readlink("here", buf, sizeof buf) || errno != ENOSYS)
1768       return 0;
1769    return 1;
1770 }
1771 !
1772    then
1773       :
1774    else
1775       feat_bail_required DOTLOCK
1776    fi
1777 fi
1778
1779 if feat_yes DOTLOCK; then
1780    if run_check fchown 'fchown(2)' << \!
1781 #include <unistd.h>
1782 # include <errno.h>
1783 int main(void){
1784    if(!fchown(0, 0, 0) || errno != ENOSYS)
1785       return 0;
1786    return 1;
1787 }
1788 !
1789    then
1790       :
1791    else
1792       feat_bail_required DOTLOCK
1793    fi
1794 fi
1795
1796 ## Now it is the time to fork away the BASE_ series
1797
1798 ${rm} -f ${tmp}
1799 squeeze_em ${inc} ${tmp}
1800 ${mv} ${tmp} ${inc}
1801 squeeze_em ${lib} ${tmp}
1802 ${mv} ${tmp} ${lib}
1803
1804 echo "BASE_LIBS = `${cat} ${lib}`" >> ${mk}
1805 echo "BASE_INCS = `${cat} ${inc}`" >> ${mk}
1806
1807 ## The remains are expected to be used only by the main MUA binary!
1808
1809 OPT_LOCALES=0
1810 link_check setlocale 'setlocale(3)' '#define HAVE_SETLOCALE' << \!
1811 #include <locale.h>
1812 int main(void){
1813    setlocale(LC_ALL, "");
1814    return 0;
1815 }
1816 !
1817 [ -n "${have_setlocale}" ] && OPT_LOCALES=1
1818
1819 OPT_MULTIBYTE_CHARSETS=0
1820 OPT_WIDE_GLYPHS=0
1821 OPT_TERMINAL_CHARSET=0
1822 if [ -n "${have_setlocale}" ]; then
1823    link_check c90amend1 'ISO/IEC 9899:1990/Amendment 1:1995' \
1824       '#define HAVE_C90AMEND1' << \!
1825 #include <limits.h>
1826 #include <stdlib.h>
1827 #include <wchar.h>
1828 #include <wctype.h>
1829 int main(void){
1830    char mbb[MB_LEN_MAX + 1];
1831    wchar_t wc;
1832
1833    iswprint(L'c');
1834    towupper(L'c');
1835    mbtowc(&wc, "x", 1);
1836    mbrtowc(&wc, "x", 1, NULL);
1837    wctomb(mbb, wc);
1838    return (mblen("\0", 1) == 0);
1839 }
1840 !
1841    [ -n "${have_c90amend1}" ] && OPT_MULTIBYTE_CHARSETS=1
1842
1843    if [ -n "${have_c90amend1}" ]; then
1844       link_check wcwidth 'wcwidth(3)' '#define HAVE_WCWIDTH' << \!
1845 #include <wchar.h>
1846 int main(void){
1847    wcwidth(L'c');
1848    return 0;
1849 }
1850 !
1851       [ -n "${have_wcwidth}" ] && OPT_WIDE_GLYPHS=1
1852    fi
1853
1854    link_check nl_langinfo 'nl_langinfo(3)' '#define HAVE_NL_LANGINFO' << \!
1855 #include <langinfo.h>
1856 #include <stdlib.h>
1857 int main(void){
1858    nl_langinfo(DAY_1);
1859    return (nl_langinfo(CODESET) == NULL);
1860 }
1861 !
1862    [ -n "${have_nl_langinfo}" ] && OPT_TERMINAL_CHARSET=1
1863 fi # have_setlocale
1864
1865 link_check fnmatch 'fnmatch(3)' '#define HAVE_FNMATCH' << \!
1866 #include <fnmatch.h>
1867 int main(void){
1868    return (fnmatch("*", ".", FNM_PATHNAME | FNM_PERIOD) == FNM_NOMATCH);
1869 }
1870 !
1871
1872 link_check dirent_d_type 'struct dirent.d_type' '#define HAVE_DIRENT_TYPE' << \!
1873 #include <dirent.h>
1874 int main(void){
1875    struct dirent de;
1876    return !(de.d_type == DT_UNKNOWN ||
1877       de.d_type == DT_DIR || de.d_type == DT_LNK);
1878 }
1879 !
1880
1881 ## optional and selectable
1882
1883 if feat_yes ICONV; then
1884    ${cat} > ${tmp2}.c << \!
1885 #include <stdio.h> /* For C89 NULL */
1886 #include <iconv.h>
1887 int main(void){
1888    iconv_t id;
1889
1890    id = iconv_open("foo", "bar");
1891    iconv(id, NULL, NULL, NULL, NULL);
1892    iconv_close(id);
1893    return 0;
1894 }
1895 !
1896    < ${tmp2}.c link_check iconv 'iconv(3) functionality' \
1897          '#define HAVE_ICONV' ||
1898       < ${tmp2}.c link_check iconv 'iconv(3) functionality (via -liconv)' \
1899          '#define HAVE_ICONV' '-liconv' ||
1900       feat_bail_required ICONV
1901 else
1902    echo '/* OPT_ICONV=0 */' >> ${h}
1903 fi # feat_yes ICONV
1904
1905 if feat_yes SOCKETS || feat_yes SPAM_SPAMD; then
1906    ${cat} > ${tmp2}.c << \!
1907 #include <sys/types.h>
1908 #include <sys/socket.h>
1909 #include <sys/un.h>
1910 # include <errno.h>
1911 int main(void){
1912    struct sockaddr_un soun;
1913
1914    if(socket(AF_UNIX, SOCK_STREAM, 0) == -1 && errno == ENOSYS)
1915       return 1;
1916    if(connect(0, (struct sockaddr*)&soun, 0) == -1 && errno == ENOSYS)
1917       return 1;
1918    if(shutdown(0, SHUT_RD | SHUT_WR | SHUT_RDWR) == -1 && errno == ENOSYS)
1919       return 1;
1920    return 0;
1921 }
1922 !
1923
1924    < ${tmp2}.c run_check af_unix 'AF_UNIX sockets' \
1925          '#define HAVE_UNIX_SOCKETS' ||
1926       < ${tmp2}.c run_check af_unix 'AF_UNIX sockets (via -lnsl)' \
1927          '#define HAVE_UNIX_SOCKETS' '-lnsl' ||
1928       < ${tmp2}.c run_check af_unix 'AF_UNIX sockets (via -lsocket -lnsl)' \
1929          '#define HAVE_UNIX_SOCKETS' '-lsocket -lnsl'
1930 fi
1931
1932 if feat_yes SOCKETS; then
1933    ${cat} > ${tmp2}.c << \!
1934 #include <sys/types.h>
1935 #include <sys/socket.h>
1936 #include <netinet/in.h>
1937 # include <errno.h>
1938 int main(void){
1939    struct sockaddr s;
1940
1941    if(socket(AF_INET, SOCK_STREAM, 0) == -1 && errno == ENOSYS)
1942       return 1;
1943    if(connect(0, &s, 0) == -1 && errno == ENOSYS)
1944       return 1;
1945    return 0;
1946 }
1947 !
1948
1949    < ${tmp2}.c run_check sockets 'sockets' \
1950          '#define HAVE_SOCKETS' ||
1951       < ${tmp2}.c run_check sockets 'sockets (via -lnsl)' \
1952          '#define HAVE_SOCKETS' '-lnsl' ||
1953       < ${tmp2}.c run_check sockets 'sockets (via -lsocket -lnsl)' \
1954          '#define HAVE_SOCKETS' '-lsocket -lnsl' ||
1955       feat_bail_required SOCKETS
1956 else
1957    echo '/* OPT_SOCKETS=0 */' >> ${h}
1958 fi # feat_yes SOCKETS
1959
1960 if feat_yes SOCKETS; then
1961    link_check getaddrinfo 'getaddrinfo(3)' \
1962       '#define HAVE_GETADDRINFO' << \!
1963 #include <sys/types.h>
1964 #include <sys/socket.h>
1965 #include <stdio.h>
1966 #include <netdb.h>
1967 int main(void){
1968    struct addrinfo a, *ap;
1969    int lrv;
1970
1971    switch((lrv = getaddrinfo("foo", "0", &a, &ap))){
1972    case EAI_NONAME:
1973    case EAI_SERVICE:
1974    default:
1975       fprintf(stderr, "%s\n", gai_strerror(lrv));
1976    case 0:
1977       break;
1978    }
1979    return 0;
1980 }
1981 !
1982 fi
1983
1984 if feat_yes SOCKETS && [ -z "${have_getaddrinfo}" ]; then
1985    compile_check arpa_inet_h '<arpa/inet.h>' \
1986       '#define HAVE_ARPA_INET_H' << \!
1987 #include <sys/types.h>
1988 #include <sys/socket.h>
1989 #include <netdb.h>
1990 #include <netinet/in.h>
1991 #include <arpa/inet.h>
1992 !
1993
1994    ${cat} > ${tmp2}.c << \!
1995 #include <sys/types.h>
1996 #include <sys/socket.h>
1997 #include <stdio.h>
1998 #include <string.h>
1999 #include <netdb.h>
2000 #include <netinet/in.h>
2001 #ifdef HAVE_ARPA_INET_H
2002 #include <arpa/inet.h>
2003 #endif
2004 int main(void){
2005    struct sockaddr_in servaddr;
2006    unsigned short portno;
2007    struct servent *ep;
2008    struct hostent *hp;
2009    struct in_addr **pptr;
2010
2011    portno = 0;
2012    if((ep = getservbyname("POPPY-PORT", "tcp")) != NULL)
2013       portno = (unsigned short)ep->s_port;
2014
2015    if((hp = gethostbyname("POPPY-HOST")) != NULL){
2016       pptr = (struct in_addr**)hp->h_addr_list;
2017       if(hp->h_addrtype != AF_INET)
2018          fprintf(stderr, "au\n");
2019    }else{
2020       switch(h_errno){
2021       case HOST_NOT_FOUND:
2022       case TRY_AGAIN:
2023       case NO_RECOVERY:
2024       case NO_DATA:
2025          break;
2026       default:
2027          fprintf(stderr, "au\n");
2028          break;
2029       }
2030    }
2031
2032    memset(&servaddr, 0, sizeof servaddr);
2033    servaddr.sin_family = AF_INET;
2034    servaddr.sin_port = htons(portno);
2035    memcpy(&servaddr.sin_addr, *pptr, sizeof(struct in_addr));
2036    fprintf(stderr, "Would connect to %s:%d ...\n",
2037       inet_ntoa(**pptr), (int)portno);
2038    return 0;
2039 }
2040 !
2041
2042    < ${tmp2}.c link_check gethostbyname 'get(serv|host)byname(3)' ||
2043       < ${tmp2}.c link_check gethostbyname \
2044          'get(serv|host)byname(3) (via -nsl)' '' '-lnsl' ||
2045       < ${tmp2}.c link_check gethostbyname \
2046          'get(serv|host)byname(3) (via -lsocket -nsl)' \
2047          '' '-lsocket -lnsl' ||
2048       feat_bail_required SOCKETS
2049 fi
2050
2051 feat_yes SOCKETS &&
2052 run_check setsockopt 'setsockopt(2)' '#define HAVE_SETSOCKOPT' << \!
2053 #include <sys/socket.h>
2054 #include <stdlib.h>
2055 # include <errno.h>
2056 int main(void){
2057    int sockfd = 3;
2058
2059    if(setsockopt(sockfd, SOL_SOCKET, SO_KEEPALIVE, NULL, 0) == -1 &&
2060          errno == ENOSYS)
2061       return 1;
2062    return 0;
2063 }
2064 !
2065
2066 feat_yes SOCKETS && [ -n "${have_setsockopt}" ] &&
2067 link_check so_sndtimeo 'SO_SNDTIMEO' '#define HAVE_SO_SNDTIMEO' << \!
2068 #include <sys/socket.h>
2069 #include <stdlib.h>
2070 int main(void){
2071    struct timeval tv;
2072    int sockfd = 3;
2073
2074    tv.tv_sec = 42;
2075    tv.tv_usec = 21;
2076    setsockopt(sockfd, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof tv);
2077    setsockopt(sockfd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof tv);
2078    return 0;
2079 }
2080 !
2081
2082 feat_yes SOCKETS && [ -n "${have_setsockopt}" ] &&
2083 link_check so_linger 'SO_LINGER' '#define HAVE_SO_LINGER' << \!
2084 #include <sys/socket.h>
2085 #include <stdlib.h>
2086 int main(void){
2087    struct linger li;
2088    int sockfd = 3;
2089
2090    li.l_onoff = 1;
2091    li.l_linger = 42;
2092    setsockopt(sockfd, SOL_SOCKET, SO_LINGER, &li, sizeof li);
2093    return 0;
2094 }
2095 !
2096
2097 if feat_yes SSL; then # {{{
2098    # {{{ LibreSSL decided to define OPENSSL_VERSION_NUMBER with a useless value
2099    # instead of keeping it at the one that corresponds to the OpenSSL at fork
2100    # time: we need to test it first in order to get things right
2101    if compile_check _xssl 'TLS/SSL (LibreSSL)' \
2102       '#define HAVE_SSL
2103       #define HAVE_XSSL
2104       #define HAVE_XSSL_RESSL
2105       #define HAVE_XSSL_OPENSSL 0' << \!
2106 #include <openssl/opensslv.h>
2107 #ifdef LIBRESSL_VERSION_NUMBER
2108 #else
2109 # error nope
2110 #endif
2111 !
2112    then
2113       ossl_v1_1=
2114    # TODO OPENSSL_IS_BORINGSSL, but never tried that one!
2115    elif compile_check _xssl 'TLS/SSL (OpenSSL >= v1.1.0)' \
2116       '#define HAVE_SSL
2117       #define HAVE_XSSL
2118       #define HAVE_XSSL_OPENSSL 0x10100' << \!
2119 #include <openssl/opensslv.h>
2120 #if OPENSSL_VERSION_NUMBER + 0 >= 0x10100000L
2121 #else
2122 # error nope
2123 #endif
2124 !
2125    then
2126       ossl_v1_1=1
2127    elif compile_check _xssl 'TLS/SSL (OpenSSL)' \
2128       '#define HAVE_SSL
2129       #define HAVE_XSSL
2130       #define HAVE_XSSL_OPENSSL 0x10000' << \!
2131 #include <openssl/opensslv.h>
2132 #ifdef OPENSSL_VERSION_NUMBER
2133 #else
2134 # error nope
2135 #endif
2136 !
2137    then
2138       ossl_v1_1=
2139    else
2140       feat_bail_required SSL
2141    fi # }}}
2142
2143    if feat_yes SSL; then # {{{
2144       if [ -n "${ossl_v1_1}" ]; then
2145          without_check yes xssl 'TLS/SSL (new style *_client_method(3ssl))' \
2146             '#define n_XSSL_CLIENT_METHOD TLS_client_method' \
2147             '-lssl -lcrypto'
2148       elif link_check xssl 'TLS/SSL (new style *_client_method(3ssl))' \
2149             '#define n_XSSL_CLIENT_METHOD TLS_client_method' \
2150             '-lssl -lcrypto' << \!
2151 #include <openssl/ssl.h>
2152 #include <openssl/err.h>
2153 #include <openssl/x509v3.h>
2154 #include <openssl/x509.h>
2155 #include <openssl/rand.h>
2156 #ifdef OPENSSL_NO_TLS1 /* TODO only deduced from OPENSSL_NO_SSL[23]! */
2157 # error We need TLSv1.
2158 #endif
2159 int main(void){
2160    SSL_CTX *ctx = SSL_CTX_new(TLS_client_method());
2161
2162    SSL_CTX_free(ctx);
2163    PEM_read_PrivateKey(0, 0, 0, 0);
2164    return 0;
2165 }
2166 !
2167       then
2168          :
2169       elif link_check xssl 'TLS/SSL (old style *_client_method(3ssl))' \
2170             '#define n_XSSL_CLIENT_METHOD SSLv23_client_method' \
2171             '-lssl -lcrypto' << \!
2172 #include <openssl/ssl.h>
2173 #include <openssl/err.h>
2174 #include <openssl/x509v3.h>
2175 #include <openssl/x509.h>
2176 #include <openssl/rand.h>
2177 #if defined OPENSSL_NO_SSL3 &&\
2178       defined OPENSSL_NO_TLS1 /* TODO only deduced from OPENSSL_NO_SSL[23]! */
2179 # error We need one of SSLv3 and TLSv1.
2180 #endif
2181 int main(void){
2182    SSL_CTX *ctx = SSL_CTX_new(SSLv23_client_method());
2183
2184    SSL_CTX_free(ctx);
2185    PEM_read_PrivateKey(0, 0, 0, 0);
2186    return 0;
2187 }
2188 !
2189       then
2190          :
2191       else
2192          feat_bail_required SSL
2193       fi
2194    fi # }}}
2195
2196    if feat_yes SSL; then # {{{
2197       if [ -n "${ossl_v1_1}" ]; then
2198          without_check yes xssl_stack_of 'TLS/SSL STACK_OF()' \
2199             '#define HAVE_XSSL_STACK_OF'
2200       elif compile_check xssl_stack_of 'TLS/SSL STACK_OF()' \
2201             '#define HAVE_XSSL_STACK_OF' << \!
2202 #include <stdio.h> /* For C89 NULL */
2203 #include <openssl/ssl.h>
2204 #include <openssl/err.h>
2205 #include <openssl/x509v3.h>
2206 #include <openssl/x509.h>
2207 #include <openssl/rand.h>
2208 int main(void){
2209    STACK_OF(GENERAL_NAME) *gens = NULL;
2210
2211    printf("%p", gens); /* to use it */
2212    return 0;
2213 }
2214 !
2215       then
2216          :
2217       fi
2218
2219       if [ -n "${ossl_v1_1}" ]; then
2220          without_check yes xssl_conf 'TLS/SSL OpenSSL_modules_load_file()' \
2221             '#define HAVE_XSSL_CONFIG'
2222       elif link_check xssl_conf 'TLS/SSL OpenSSL_modules_load_file() support' \
2223             '#define HAVE_XSSL_CONFIG' << \!
2224 #include <stdio.h> /* For C89 NULL */
2225 #include <openssl/conf.h>
2226 int main(void){
2227    CONF_modules_load_file(NULL, NULL, CONF_MFLAGS_IGNORE_MISSING_FILE);
2228    CONF_modules_free();
2229    return 0;
2230 }
2231 !
2232       then
2233          :
2234       fi
2235
2236       if [ -n "${ossl_v1_1}" ]; then
2237          without_check yes xssl_conf_ctx 'TLS/SSL SSL_CONF_CTX support' \
2238             '#define HAVE_XSSL_CONF_CTX'
2239       elif link_check xssl_conf_ctx 'TLS/SSL SSL_CONF_CTX support' \
2240          '#define HAVE_XSSL_CONF_CTX' << \!
2241 #include <openssl/ssl.h>
2242 #include <openssl/err.h>
2243 int main(void){
2244    SSL_CTX *ctx = SSL_CTX_new(n_XSSL_CLIENT_METHOD());
2245    SSL_CONF_CTX *cctx = SSL_CONF_CTX_new();
2246
2247    SSL_CONF_CTX_set_flags(cctx,
2248       SSL_CONF_FLAG_FILE | SSL_CONF_FLAG_CLIENT |
2249       SSL_CONF_FLAG_CERTIFICATE | SSL_CONF_FLAG_SHOW_ERRORS);
2250    SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
2251    SSL_CONF_cmd(cctx, "Protocol", "ALL");
2252    SSL_CONF_CTX_finish(cctx);
2253    SSL_CONF_CTX_free(cctx);
2254    SSL_CTX_free(ctx);
2255    return 0;
2256 }
2257 !
2258       then
2259          :
2260       fi
2261
2262       if [ -n "${ossl_v1_1}" ]; then
2263          without_check no xssl_rand_egd 'TLS/SSL RAND_egd(3ssl)' \
2264             '#define HAVE_XSSL_RAND_EGD'
2265       elif link_check xssl_rand_egd 'TLS/SSL RAND_egd(3ssl)' \
2266             '#define HAVE_XSSL_RAND_EGD' << \!
2267 #include <openssl/rand.h>
2268 int main(void){
2269    return RAND_egd("some.where") > 0;
2270 }
2271 !
2272       then
2273          :
2274       fi
2275
2276       if feat_yes SSL_ALL_ALGORITHMS; then
2277          if [ -n "${ossl_v1_1}" ]; then
2278             without_check yes ssl_all_algo 'TLS/SSL all-algorithms support' \
2279                '#define HAVE_SSL_ALL_ALGORITHMS'
2280          elif link_check ssl_all_algo 'TLS/SSL all-algorithms support' \
2281             '#define HAVE_SSL_ALL_ALGORITHMS' << \!
2282 #include <openssl/evp.h>
2283 int main(void){
2284    OpenSSL_add_all_algorithms();
2285    EVP_get_cipherbyname("two cents i never exist");
2286    EVP_cleanup();
2287    return 0;
2288 }
2289 !
2290          then
2291             :
2292          else
2293             feat_bail_required SSL_ALL_ALGORITHMS
2294          fi
2295       fi
2296    fi # feat_yes SSL }}}
2297
2298    if feat_yes SSL && feat_yes MD5 && feat_no NOEXTMD5; then # {{{
2299       run_check ssl_md5 'MD5 digest in the used crypto library' \
2300             '#define HAVE_XSSL_MD5' << \!
2301 #include <stdlib.h>
2302 #include <string.h>
2303 #include <openssl/md5.h>
2304 int main(void){
2305    char const dat[] = "abrakadabrafidibus";
2306    char dig[16], hex[16 * 2];
2307    MD5_CTX ctx;
2308    size_t i, j;
2309
2310    memset(dig, 0, sizeof(dig));
2311    memset(hex, 0, sizeof(hex));
2312    MD5_Init(&ctx);
2313    MD5_Update(&ctx, dat, sizeof(dat) - 1);
2314    MD5_Final(dig, &ctx);
2315
2316 #define hexchar(n) ((n) > 9 ? (n) - 10 + 'a' : (n) + '0')
2317    for(i = 0; i < sizeof(hex) / 2; i++){
2318       j = i << 1;
2319       hex[j] = hexchar((dig[i] & 0xf0) >> 4);
2320       hex[++j] = hexchar(dig[i] & 0x0f);
2321    }
2322    return !!memcmp("6d7d0a3d949da2e96f2aa010f65d8326", hex, sizeof(hex));
2323 }
2324 !
2325    fi # }}}
2326 else
2327    echo '/* OPT_SSL=0 */' >> ${h}
2328 fi # }}} feat_yes SSL
2329
2330 if [ "${have_xssl}" = yes ]; then
2331    OPT_SMIME=1
2332 else
2333    OPT_SMIME=0
2334 fi
2335 feat_def SMIME
2336
2337 feat_def SMTP
2338 feat_def POP3
2339 feat_def IMAP
2340
2341 if feat_yes GSSAPI; then
2342    ${cat} > ${tmp2}.c << \!
2343 #include <gssapi/gssapi.h>
2344 int main(void){
2345    gss_import_name(0, 0, GSS_C_NT_HOSTBASED_SERVICE, 0);
2346    gss_init_sec_context(0,0,0,0,0,0,0,0,0,0,0,0,0);
2347    return 0;
2348 }
2349 !
2350    ${sed} -e '1s/gssapi\///' < ${tmp2}.c > ${tmp3}.c
2351
2352    if command -v krb5-config >/dev/null 2>&1; then
2353       i=`command -v krb5-config`
2354       GSS_LIBS="`CFLAGS= ${i} --libs gssapi`"
2355       GSS_INCS="`CFLAGS= ${i} --cflags`"
2356       i='GSS-API via krb5-config(1)'
2357    else
2358       GSS_LIBS='-lgssapi'
2359       GSS_INCS=
2360       i='GSS-API in gssapi/gssapi.h, libgssapi'
2361    fi
2362    if < ${tmp2}.c link_check gss \
2363          "${i}" '#define HAVE_GSSAPI' "${GSS_LIBS}" "${GSS_INCS}" ||\
2364       < ${tmp3}.c link_check gss \
2365          'GSS-API in gssapi.h, libgssapi' \
2366          '#define HAVE_GSSAPI
2367          #define GSSAPI_REG_INCLUDE' \
2368          '-lgssapi' ||\
2369       < ${tmp2}.c link_check gss 'GSS-API in libgssapi_krb5' \
2370          '#define HAVE_GSSAPI' \
2371          '-lgssapi_krb5' ||\
2372       < ${tmp3}.c link_check gss \
2373          'GSS-API in libgssapi, OpenBSD-style (pre 5.3)' \
2374          '#define HAVE_GSSAPI
2375          #define GSS_REG_INCLUDE' \
2376          '-lgssapi -lkrb5 -lcrypto' \
2377          '-I/usr/include/kerberosV' ||\
2378       < ${tmp2}.c link_check gss 'GSS-API in libgss' \
2379          '#define HAVE_GSSAPI' \
2380          '-lgss' ||\
2381       link_check gss 'GSS-API in libgssapi_krb5, old-style' \
2382          '#define HAVE_GSSAPI
2383          #define GSSAPI_OLD_STYLE' \
2384          '-lgssapi_krb5' << \!
2385 #include <gssapi/gssapi.h>
2386 #include <gssapi/gssapi_generic.h>
2387 int main(void){
2388    gss_import_name(0, 0, gss_nt_service_name, 0);
2389    gss_init_sec_context(0,0,0,0,0,0,0,0,0,0,0,0,0);
2390    return 0;
2391 }
2392 !
2393    then
2394       :
2395    else
2396       feat_bail_required GSSAPI
2397    fi
2398 else
2399    echo '/* OPT_GSSAPI=0 */' >> ${h}
2400 fi # feat_yes GSSAPI
2401
2402 feat_def NETRC
2403 feat_def AGENT
2404
2405 if feat_yes IDNA; then
2406    if link_check idna 'GNU Libidn' '#define HAVE_IDNA HAVE_IDNA_LIBIDNA' \
2407          '-lidn' << \!
2408 #include <idna.h>
2409 #include <idn-free.h>
2410 #include <stringprep.h>
2411 int main(void){
2412    char *utf8, *idna_ascii, *idna_utf8;
2413
2414    utf8 = stringprep_locale_to_utf8("does.this.work");
2415    if (idna_to_ascii_8z(utf8, &idna_ascii, IDNA_USE_STD3_ASCII_RULES)
2416          != IDNA_SUCCESS)
2417       return 1;
2418    idn_free(idna_ascii);
2419    /* (Rather link check only here) */
2420    idna_utf8 = stringprep_convert(idna_ascii, "UTF-8", "de_DE");
2421    return 0;
2422 }
2423 !
2424    then
2425       :
2426    elif link_check idna 'idnkit' '#define HAVE_IDNA HAVE_IDNA_IDNKIT' \
2427          '-lidnkit' << \!
2428 #include <stdio.h>
2429 #include <idn/api.h>
2430 #include <idn/result.h>
2431 int main(void){
2432    idn_result_t r;
2433    char ace_name[256];
2434    char local_name[256];
2435
2436    r = idn_encodename(IDN_ENCODE_APP, "does.this.work", ace_name,
2437          sizeof(ace_name));
2438    if (r != idn_success) {
2439       fprintf(stderr, "idn_encodename failed: %s\n", idn_result_tostring(r));
2440       return 1;
2441    }
2442    r = idn_decodename(IDN_DECODE_APP, ace_name, local_name, sizeof(local_name));
2443    if (r != idn_success) {
2444       fprintf(stderr, "idn_decodename failed: %s\n", idn_result_tostring(r));
2445       return 1;
2446    }
2447    return 0;
2448 }
2449 !
2450    then
2451       :
2452    else
2453       feat_bail_required IDNA
2454    fi
2455
2456    if [ -n "${have_idna}" ]; then
2457       echo '#define HAVE_IDNA_LIBIDNA 0' >> ${h}
2458       echo '#define HAVE_IDNA_IDNKIT 1' >> ${h}
2459    fi
2460 else
2461    echo '/* OPT_IDNA=0 */' >> ${h}
2462 fi
2463
2464 feat_def IMAP_SEARCH
2465
2466 if feat_yes REGEX; then
2467    if link_check regex 'regular expressions' '#define HAVE_REGEX' << \!
2468 #include <regex.h>
2469 #include <stdlib.h>
2470 int main(void){
2471    size_t xret;
2472    int status;
2473    regex_t re;
2474
2475    status = regcomp(&re, ".*bsd", REG_EXTENDED | REG_ICASE | REG_NOSUB);
2476    xret = regerror(status, &re, NULL, 0);
2477    status = regexec(&re, "plan9", 0,NULL, 0);
2478    regfree(&re);
2479    return !(status == REG_NOMATCH);
2480 }
2481 !
2482    then
2483       :
2484    else
2485       feat_bail_required REGEX
2486    fi
2487 else
2488    echo '/* OPT_REGEX=0 */' >> ${h}
2489 fi
2490
2491 if feat_yes MLE && [ -n "${have_c90amend1}" ]; then
2492    have_mle=1
2493    echo '#define HAVE_MLE' >> ${h}
2494 else
2495    feat_bail_required MLE
2496    echo '/* OPT_MLE=0 */' >> ${h}
2497 fi
2498
2499 # Generic have-a-line-editor switch for those who need it below
2500 if [ -n "${have_mle}" ]; then
2501    have_cle=1
2502 fi
2503
2504 if [ -n "${have_cle}" ] && feat_yes HISTORY; then
2505    echo '#define HAVE_HISTORY' >> ${h}
2506 else
2507    echo '/* OPT_HISTORY=0 */' >> ${h}
2508 fi
2509
2510 if [ -n "${have_mle}" ] && feat_yes KEY_BINDINGS; then
2511    echo '#define HAVE_KEY_BINDINGS' >> ${h}
2512 else
2513    echo '/* OPT_KEY_BINDINGS=0 */' >> ${h}
2514 fi
2515
2516 if feat_yes TERMCAP; then
2517    __termcaplib() {
2518       link_check termcap "termcap(5) (via ${4})" \
2519          "#define HAVE_TERMCAP${3}" "${1}" << _EOT
2520 #include <stdio.h>
2521 #include <stdlib.h>
2522 ${2}
2523 #include <term.h>
2524 #define UNCONST(P) ((void*)(unsigned long)(void const*)(P))
2525 static int my_putc(int c){return putchar(c);}
2526 int main(void){
2527    char buf[1024+512], cmdbuf[2048], *cpb, *r1;
2528    int r2 = OK, r3 = ERR;
2529
2530    tgetent(buf, getenv("TERM"));
2531    cpb = cmdbuf;
2532    r1 = tgetstr(UNCONST("cm"), &cpb);
2533    tgoto(r1, 1, 1);
2534    r2 = tgetnum(UNCONST("Co"));
2535    r3 = tgetflag(UNCONST("ut"));
2536    tputs("cr", 1, &my_putc);
2537    return (r1 == NULL || r2 == -1 || r3 == 0);
2538 }
2539 _EOT
2540    }
2541
2542    __terminfolib() {
2543       link_check terminfo "terminfo(5) (via ${2})" \
2544          '#define HAVE_TERMCAP
2545          #define HAVE_TERMCAP_CURSES
2546          #define HAVE_TERMINFO' "${1}" << _EOT
2547 #include <stdio.h>
2548 #include <curses.h>
2549 #include <term.h>
2550 #define UNCONST(P) ((void*)(unsigned long)(void const*)(P))
2551 static int my_putc(int c){return putchar(c);}
2552 int main(void){
2553    int er, r0, r1, r2;
2554    char *r3, *tp;
2555
2556    er = OK;
2557    r0 = setupterm(NULL, 1, &er);
2558    r1 = tigetflag(UNCONST("bce"));
2559    r2 = tigetnum(UNCONST("colors"));
2560    r3 = tigetstr(UNCONST("cr"));
2561    tp = tparm(r3, NULL, NULL, 0,0,0,0,0,0,0);
2562    tputs(tp, 1, &my_putc);
2563    return (r0 == ERR || r1 == -1 || r2 == -2 || r2 == -1 ||
2564       r3 == (char*)-1 || r3 == NULL);
2565 }
2566 _EOT
2567    }
2568
2569    if feat_yes TERMCAP_VIA_TERMINFO; then
2570       __terminfolib -ltinfo -ltinfo ||
2571          __terminfolib -lcurses -lcurses ||
2572          __terminfolib -lcursesw -lcursesw ||
2573          feat_bail_required TERMCAP_VIA_TERMINFO
2574    fi
2575
2576    if [ -z "${have_terminfo}" ]; then
2577       __termcaplib -ltermcap '' '' '-ltermcap' ||
2578          __termcaplib -ltermcap '#include <curses.h>' '
2579             #define HAVE_TERMCAP_CURSES' \
2580             'curses.h / -ltermcap' ||
2581          __termcaplib -lcurses '#include <curses.h>' '
2582             #define HAVE_TERMCAP_CURSES' \
2583             'curses.h / -lcurses' ||
2584          __termcaplib -lcursesw '#include <curses.h>' '
2585             #define HAVE_TERMCAP_CURSES' \
2586             'curses.h / -lcursesw' ||
2587          feat_bail_required TERMCAP
2588
2589       if [ -n "${have_termcap}" ]; then
2590          run_check tgetent_null \
2591             "tgetent(3) of termcap(5) takes NULL buffer" \
2592             "#define HAVE_TGETENT_NULL_BUF" << _EOT
2593 #include <stdio.h> /* For C89 NULL */
2594 #include <stdlib.h>
2595 #ifdef HAVE_TERMCAP_CURSES
2596 # include <curses.h>
2597 #endif
2598 #include <term.h>
2599 int main(void){
2600    tgetent(NULL, getenv("TERM"));
2601    return 0;
2602 }
2603 _EOT
2604       fi
2605    fi
2606 else
2607    echo '/* OPT_TERMCAP=0 */' >> ${h}
2608    echo '/* OPT_TERMCAP_VIA_TERMINFO=0 */' >> ${h}
2609 fi
2610
2611 if feat_def SPAM_SPAMC; then
2612    if command -v spamc >/dev/null 2>&1; then
2613       echo "#define SPAM_SPAMC_PATH \"`command -v spamc`\"" >> ${h}
2614    fi
2615 fi
2616
2617 if feat_yes SPAM_SPAMD && [ -n "${have_af_unix}" ]; then
2618    echo '#define HAVE_SPAM_SPAMD' >> ${h}
2619 else
2620    feat_bail_required SPAM_SPAMD
2621    echo '/* OPT_SPAM_SPAMD=0 */' >> ${h}
2622 fi
2623
2624 feat_def SPAM_FILTER
2625
2626 if feat_yes SPAM_SPAMC || feat_yes SPAM_SPAMD || feat_yes SPAM_FILTER; then
2627    echo '#define HAVE_SPAM' >> ${h}
2628 else
2629    echo '/* HAVE_SPAM */' >> ${h}
2630 fi
2631
2632 if feat_yes QUOTE_FOLD &&\
2633       [ -n "${have_c90amend1}" ] && [ -n "${have_wcwidth}" ]; then
2634    echo '#define HAVE_QUOTE_FOLD' >> ${h}
2635 else
2636    feat_bail_required QUOTE_FOLD
2637    echo '/* OPT_QUOTE_FOLD=0 */' >> ${h}
2638 fi
2639
2640 feat_def FILTER_HTML_TAGSOUP
2641 feat_def COLOUR
2642 feat_def DOTLOCK
2643 feat_def MD5
2644 feat_def NOMEMDBG
2645
2646 ## Summarizing
2647
2648 ${rm} -f ${tmp}
2649 squeeze_em ${inc} ${tmp}
2650 ${mv} ${tmp} ${inc}
2651 squeeze_em ${lib} ${tmp}
2652 ${mv} ${tmp} ${lib}
2653
2654 # mk-config.h
2655 ${mv} ${h} ${tmp}
2656 printf '#ifndef n_MK_CONFIG_H\n# define n_MK_CONFIG_H 1\n' > ${h}
2657 ${cat} ${tmp} >> ${h}
2658 ${rm} -f ${tmp}
2659 printf '\n' >> ${h}
2660
2661 # Create the string that is used by *features* and `version'.
2662 # Take this nice opportunity and generate a visual listing of included and
2663 # non-included features for the person who runs the configuration
2664 msg '\nThe following features are included (+) or not (-):'
2665 set -- ${OPTIONS_DETECT} ${OPTIONS} ${OPTIONS_XTRA}
2666 printf '/* The "feature string" */\n' >> ${h}
2667 # Because + is expanded by *folder* if first in "echo $features", put something
2668 printf '#define VAL_FEATURES_CNT '${#}'\n#define VAL_FEATURES "#' >> ${h}
2669 sep=
2670 for opt
2671 do
2672    sdoc=`option_doc_of ${opt}`
2673    [ -z "${sdoc}" ] && continue
2674    sopt="`echo ${opt} | ${tr} '[A-Z]_' '[a-z]-'`"
2675    feat_yes ${opt} && sign=+ || sign=-
2676    printf -- "${sep}${sign}${sopt}" >> ${h}
2677    sep=','
2678    msg " %s %s: %s" ${sign} ${sopt} "${sdoc}"
2679 done
2680 # TODO instead of using sh+tr+awk+printf, use awk, drop option_doc_of, inc here
2681 #exec 5>&1 >>${h}
2682 #${awk} -v opts="${OPTIONS_DETECT} ${OPTIONS} ${OPTIONS_XTRA}" \
2683 #   -v xopts="${XOPTIONS_DETECT} ${XOPTIONS} ${XOPTIONS_XTRA}" \
2684 printf '"\n' >> ${h}
2685
2686 # Create the real mk-config.mk
2687 # Note we cannout use explicit ./ filename prefix for source and object
2688 # pathnames because of a bug in bmake(1)
2689 ${rm} -rf ${tmp0}.* ${tmp0}*
2690 printf 'OBJ_SRC = ' >> ${mk}
2691 if feat_no AMALGAMATION; then
2692    for i in `printf '%s\n' *.c | ${sort}`; do
2693       if [ "${i}" = privsep.c ]; then
2694          continue
2695       fi
2696       printf "${i} " >> ${mk}
2697    done
2698    printf '\nAMALGAM_TARGET =\nAMALGAM_DEP =\n' >> ${mk}
2699 else
2700    printf 'main.c\nAMALGAM_TARGET = main.o\nAMALGAM_DEP = ' >> ${mk}
2701
2702    printf '\n/* HAVE_AMALGAMATION: include sources */\n' >> ${h}
2703    printf '#elif n_MK_CONFIG_H + 0 == 1\n' >> ${h}
2704    printf '# undef n_MK_CONFIG_H\n' >> ${h}
2705    printf '# define n_MK_CONFIG_H 2\n' >> ${h}
2706    for i in `printf '%s\n' *.c | ${sort}`; do
2707       if [ "${i}" = "${j}" ] || [ "${i}" = main.c ] || \
2708             [ "${i}" = privsep.c ]; then
2709          continue
2710       fi
2711       printf "${i} " >> ${mk}
2712       printf "# include \"${i}\"\n" >> ${h}
2713    done
2714    echo >> ${mk}
2715 fi
2716
2717 printf '#endif /* n_MK_CONFIG_H */\n' >> ${h}
2718
2719 echo "LIBS = `${cat} ${lib}`" >> ${mk}
2720 echo "INCS = `${cat} ${inc}`" >> ${mk}
2721 echo >> ${mk}
2722 ${cat} ./make-config.in >> ${mk}
2723
2724 ## Finished!
2725
2726 msg '\nSetup:'
2727 msg ' . System-wide resource file: %s/%s' "${VAL_SYSCONFDIR}" "${VAL_SYSCONFRC}"
2728 msg ' . bindir: %s' "${VAL_BINDIR}"
2729 if feat_yes DOTLOCK; then
2730    msg ' . libexecdir: %s' "${VAL_LIBEXECDIR}"
2731 fi
2732 msg ' . mandir: %s' "${VAL_MANDIR}"
2733 msg ' . M(ail)T(ransfer)A(gent): %s (argv0 %s)' "${VAL_MTA}" "${VAL_MTA_ARGV0}"
2734 msg ' . $MAIL spool directory: %s' "${VAL_MAIL}"
2735 msg ''
2736
2737 if [ -n "${have_fnmatch}" ] && [ -n "${have_fchdir}" ]; then
2738    exit 0
2739 fi
2740 msg 'Remarks:'
2741 if [ -z "${have_fnmatch}" ]; then
2742    msg ' . The function fnmatch(3) could not be found.'
2743    msg '   Filename patterns like wildcard are not supported on your system'
2744 fi
2745 if [ -z "${have_fchdir}" ]; then
2746    msg ' . The function fchdir(2) could not be found.'
2747    msg '   We will use chdir(2) instead.'
2748    msg '   This is a problem only if the current working directory is changed'
2749    msg '   while this program is inside of it'
2750 fi
2751 msg ''
2752
2753 # s-it-mode