mk-conf.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       GSSAPI='Generic Security Service authentication' \
  19       NETRC='.netrc file support' \
  20       AGENT='-' \
  21       MD5='MD5 message digest (APOP, CRAM-MD5)' \
  22    IDNA='Internationalized Domain Names for Applications (encode only)' \
  23    IMAP_SEARCH='IMAP-style search expressions' \
  24    REGEX='Regular expressions' \
  25    MLE='Mailx Line Editor' \
  26       HISTORY='Line editor history management' \
  27       KEY_BINDINGS='Configurable key bindings' \
  28    TERMCAP='Terminal capability queries (termcap(5))' \
  29       TERMCAP_VIA_TERMINFO='Terminal capability queries use terminfo(5)' \
  30    ERRORS='Error log message ring' \
  31    SPAM_SPAMC='Spam management via spamc(1) of spamassassin(1)' \
  32    SPAM_SPAMD='-' \
  33    SPAM_FILTER='Freely configurable *spam-filter-..*s' \
  34    DOCSTRINGS='Command documentation help strings' \
  35    QUOTE_FOLD='Extended *quote-fold*ing' \
  36    FILTER_HTML_TAGSOUP='Simple builtin HTML-to-text display filter' \
  37    COLOUR='Coloured message display' \
  38    DOTLOCK='Dotlock files and privilege-separated dotlock program' \
  39 "
  40
  41 # Options which are automatically deduced from host environment, i.e., these
  42 # need special treatment all around here to warp from/to OPT_ stuff
  43 # setlocale, C90AMEND1, NL_LANGINFO, wcwidth
  44 XOPTIONS_DETECT="\
  45    LOCALES='Locale support - printable characters etc. depend on environment' \
  46    MULTIBYTE_CHARSETS='Multibyte character sets' \
  47    TERMINAL_CHARSET='Automatic detection of terminal character set' \
  48    WIDE_GLYPHS='Wide glyph support' \
  49 "
  50
  51 # Rather special options, for custom building, or which always exist.
  52 # Mostly for generating the visual overview and the *features* string
  53 XOPTIONS_XTRA="\
  54    MIME='Multipurpose Internet Mail Extensions' \
  55    SMIME='S/MIME message signing, verification, en- and decryption' \
  56    CROSS_BUILD='Cross-compilation: trust any detected environment' \
  57    DEBUG='Debug enabled binary, not for end-users: THANKS!' \
  58    DEVEL='Computers do not blunder' \
  59 "
  60
  61 # The problem is that we don't have any tools we can use right now, so
  62 # encapsulate stuff in functions which get called in right order later on
  63
  64 option_reset() {
  65    set -- ${OPTIONS}
  66    for i
  67    do
  68       eval OPT_${i}=0
  69    done
  70 }
  71
  72 option_maximal() {
  73    set -- ${OPTIONS}
  74    for i
  75    do
  76       eval OPT_${i}=1
  77    done
  78    OPT_ICONV=require
  79    OPT_REGEX=require
  80    OPT_DOTLOCK=require
  81 }
  82
  83 option_setup() {
  84    option_parse OPTIONS_DETECT "${XOPTIONS_DETECT}"
  85    option_parse OPTIONS "${XOPTIONS}"
  86    option_parse OPTIONS_XTRA "${XOPTIONS_XTRA}"
  87    OPT_MIME=1
  88
  89    # Predefined CONFIG= urations take precedence over anything else
  90    if [ -n "${CONFIG}" ]; then
  91       case "${CONFIG}" in
  92       [nN][uU][lL][lL])
  93          option_reset
  94          ;;
  95       [nN][uU][lL][lL][iI])
  96          option_reset
  97          OPT_ICONV=require
  98          ;;
  99       [mM][iI][nN][iI][mM][aA][lL])
 100          option_reset
 101          OPT_ICONV=1
 102          OPT_REGEX=1
 103          OPT_DOTLOCK=require
 104          ;;
 105       [mM][eE][dD][iI][uU][mM])
 106          option_reset
 107          OPT_ICONV=require
 108          OPT_IDNA=1
 109          OPT_REGEX=1
 110          OPT_MLE=1
 111             OPT_HISTORY=1 OPT_KEY_BINDINGS=1
 112          OPT_ERRORS=1
 113          OPT_SPAM_FILTER=1
 114          OPT_DOCSTRINGS=1
 115          OPT_COLOUR=1
 116          OPT_DOTLOCK=require
 117          ;;
 118       [nN][eE][tT][sS][eE][nN][dD])
 119          option_reset
 120          OPT_ICONV=require
 121          OPT_SOCKETS=1
 122             OPT_SSL=require
 123             OPT_SMTP=require
 124             OPT_GSSAPI=1 OPT_NETRC=1 OPT_AGENT=1
 125          OPT_IDNA=1
 126          OPT_REGEX=1
 127          OPT_MLE=1
 128             OPT_HISTORY=1 OPT_KEY_BINDINGS=1
 129          OPT_DOCSTRINGS=1
 130          OPT_COLOUR=1
 131          OPT_DOTLOCK=require
 132          ;;
 133       [mM][aA][xX][iI][mM][aA][lL])
 134          option_reset
 135          option_maximal
 136          ;;
 137       [dD][eE][vV][eE][lL])
 138          OPT_DEVEL=1 OPT_DEBUG=1 OPT_NYD2=1
 139          option_maximal
 140          ;;
 141       [oO][dD][eE][vV][eE][lL])
 142          OPT_DEVEL=1
 143          option_maximal
 144          ;;
 145       *)
 146          echo >&2 "Unknown CONFIG= setting: ${CONFIG}"
 147          echo >&2 '   NULL, NULLI, MINIMAL, MEDIUM, NETSEND, MAXIMAL'
 148          exit 1
 149          ;;
 150       esac
 151    fi
 152 }
 153
 154 # Inter-relationships
 155 option_update() {
 156    if feat_no SMTP && feat_no POP3; then
 157       OPT_SOCKETS=0
 158    fi
 159    if feat_no SOCKETS; then
 160       if feat_require SMTP; then
 161          msg 'ERROR: need SOCKETS for required feature SMTP'
 162          config_exit 13
 163       fi
 164       if feat_require POP3; then
 165          msg 'ERROR: need SOCKETS for required feature POP3'
 166          config_exit 13
 167       fi
 168       OPT_SSL=0 OPT_SSL_ALL_ALGORITHMS=0
 169       OPT_SMTP=0 OPT_POP3=0
 170       OPT_GSSAPI=0 OPT_NETRC=0 OPT_AGENT=0
 171    fi
 172    if feat_no SMTP; then
 173       OPT_GSSAPI=0
 174    fi
 175
 176    if feat_no MLE; then
 177       OPT_HISTORY=0 OPT_KEY_BINDINGS=0
 178    fi
 179
 180    # If we don't need MD5 leave it alone
 181    if feat_no SOCKETS; then
 182       OPT_MD5=0
 183    fi
 184
 185    if feat_yes DEVEL; then
 186       OPT_DEBUG=1
 187    fi
 188 }
 189
 190 rc=./make.rc
 191 lst=./config.lst
 192 ev=./config.ev
 193 h=./config.h h_name=config.h
 194 mk=./mk.mk
 195
 196 newlst=./config.lst-new
 197 newmk=./config.mk-new
 198 newev=./config.ev-new
 199 newh=./config.h-new
 200 tmp0=___tmp
 201 tmp=./${tmp0}1$$
 202 tmp2=./${tmp0}2$$
 203
 204 ##  --  >8  - << OPTIONS | OS/CC >> -  8<  --  ##
 205
 206 # Note that potential duplicates in PATH, C_INCLUDE_PATH etc. will be cleaned
 207 # via path_check() later on once possible
 208
 209 # TODO cc_maxopt is brute simple, we should compile test program and dig real
 210 # compiler versions for known compilers, then be more specific
 211 cc_maxopt=100
 212 _CFLAGS= _LDFLAGS=
 213
 214 os_early_setup() {
 215    # We don't "have any utility": only path adjustments and such in here!
 216    i="${OS:-`uname -s`}"
 217
 218    if [ ${i} = SunOS ]; then
 219       msg 'SunOS / Solaris?  Applying some "early setup" rules ...'
 220       _os_early_setup_sunos
 221    fi
 222 }
 223
 224 _os_early_setup_sunos() {
 225    # According to standards(5), this is what we need to do
 226    if [ -d /usr/xpg4 ]; then :; else
 227       msg 'ERROR: On SunOS / Solaris we need /usr/xpg4 environment!  Sorry.'
 228       config_exit 1
 229    fi
 230    PATH="/usr/xpg4/bin:/usr/ccs/bin:/usr/bin:${PATH}"
 231    [ -d /usr/xpg6 ] && PATH="/usr/xpg6/bin:${PATH}"
 232    export PATH
 233 }
 234
 235 os_setup() {
 236    # OSFULLSPEC is used to recognize changes (i.e., machine type, updates etc.)
 237    OSFULLSPEC="${OS:-`uname -a | ${tr} '[A-Z]' '[a-z]'`}"
 238    OS="${OS:-`uname -s | ${tr} '[A-Z]' '[a-z]'`}"
 239    msg 'Operating system is %s' ${OS}
 240
 241    if [ ${OS} = sunos ]; then
 242       msg ' . have special SunOS / Solaris "setup" rules ...'
 243       _os_setup_sunos
 244    elif [ ${OS} = unixware ]; then
 245       msg ' . have special UnixWare environmental rules ...'
 246       if feat_yes AUTOCC && command -v cc >/dev/null 2>&1; then
 247          CC=cc
 248          feat_yes DEBUG && _CFLAGS='-v -Xa -g' || _CFLAGS='-Xa -O'
 249
 250          CFLAGS="${_CFLAGS} ${EXTRA_CFLAGS}"
 251          LDFLAGS="${_LDFLAGS} ${EXTRA_LDFLAGS}"
 252          export CC CFLAGS LDFLAGS
 253          OPT_AUTOCC=0 had_want_autocc=1 need_R_ldflags=-R
 254       fi
 255    elif [ -n "${VERBOSE}" ]; then
 256       msg ' . no special treatment for this system necessary or known'
 257    fi
 258
 259    # Sledgehammer: better set _GNU_SOURCE
 260    # And in general: oh, boy!
 261    OS_DEFINES="${OS_DEFINES}#define _GNU_SOURCE\n"
 262    #OS_DEFINES="${OS_DEFINES}#define _POSIX_C_SOURCE 200809L\n"
 263    #OS_DEFINES="${OS_DEFINES}#define _XOPEN_SOURCE 700\n"
 264    #[ ${OS} = darwin ] && OS_DEFINES="${OS_DEFINES}#define _DARWIN_C_SOURCE\n"
 265
 266    # On pkgsrc(7) systems automatically add /usr/pkg/*
 267    if [ -d /usr/pkg ]; then
 268       C_INCLUDE_PATH="${C_INCLUDE_PATH}:/usr/pkg/include"
 269       LD_LIBRARY_PATH="${LD_LIBRARY_PATH}:/usr/pkg/lib"
 270    fi
 271 }
 272
 273 _os_setup_sunos() {
 274    C_INCLUDE_PATH="/usr/xpg4/include:${C_INCLUDE_PATH}"
 275    LD_LIBRARY_PATH="/usr/xpg4/lib:${LD_LIBRARY_PATH}"
 276
 277    # Include packages
 278    if [ -d /opt/csw ]; then
 279       C_INCLUDE_PATH="${C_INCLUDE_PATH}:/opt/csw/include"
 280       LD_LIBRARY_PATH="${LD_LIBRARY_PATH}:/opt/csw/lib"
 281    fi
 282
 283    OS_DEFINES="${OS_DEFINES}#define __EXTENSIONS__\n"
 284    #OS_DEFINES="${OS_DEFINES}#define _POSIX_C_SOURCE 200112L\n"
 285
 286    [ -n "${cksum}" ] || cksum=/opt/csw/gnu/cksum
 287    if [ -x "${cksum}" ]; then :; else
 288       msg 'ERROR: Not an executable program: %s' "${cksum}"
 289       msg 'ERROR:   We need a CRC-32 cksum(1), as specified in POSIX.'
 290       msg 'ERROR:   However, we do so only for tests.'
 291       msg 'ERROR:   If that is ok, set "cksum=/usr/bin/true", then rerun'
 292       config_exit 1
 293    fi
 294
 295    if feat_yes AUTOCC; then
 296       if command -v cc >/dev/null 2>&1; then
 297          CC=cc
 298          feat_yes DEBUG && _CFLAGS="-v -Xa -g" || _CFLAGS="-Xa -O"
 299
 300          CFLAGS="${_CFLAGS} ${EXTRA_CFLAGS}"
 301          LDFLAGS="${_LDFLAGS} ${EXTRA_LDFLAGS}"
 302          export CC CFLAGS LDFLAGS
 303          OPT_AUTOCC=0 had_want_autocc=1 need_R_ldflags=-R
 304       else
 305          # Assume gcc(1), which supports -R for compat
 306          cc_maxopt=2 force_no_stackprot=1 need_R_ldflags=-Wl,-R
 307       fi
 308    fi
 309 }
 310
 311 # Check out compiler ($CC) and -flags ($CFLAGS)
 312 cc_setup() {
 313    # Even though it belongs into cc_flags we will try to compile and link
 314    # something, so ensure we have a clean state regarding CFLAGS/LDFLAGS or
 315    # EXTRA_CFLAGS/EXTRA_LDFLAGS
 316    if feat_no AUTOCC; then
 317       _cc_default
 318       # Ensure those don't do any harm
 319       EXTRA_CFLAGS= EXTRA_LDFLAGS=
 320       export EXTRA_CFLAGS EXTRA_LDFLAGS
 321       return
 322    else
 323       CFLAGS= LDFLAGS=
 324       export CFLAGS LDFLAGS
 325    fi
 326
 327    [ -n "${CC}" ] && [ "${CC}" != cc ] && { _cc_default; return; }
 328
 329    msg_nonl 'Searching for a usable C compiler .. $CC='
 330    if { i="`command -v clang`"; }; then
 331       CC=${i}
 332    elif { i="`command -v gcc`"; }; then
 333       CC=${i}
 334    elif { i="`command -v c99`"; }; then
 335       CC=${i}
 336    elif { i="`command -v tcc`"; }; then
 337       CC=${i}
 338    elif { i="`command -v pcc`"; }; then
 339       CC=${i}
 340    else
 341       if [ "${CC}" = cc ]; then
 342          :
 343       elif { i="`command -v c89`"; }; then
 344          CC=${i}
 345       else
 346          msg 'boing booom tschak'
 347          msg 'ERROR: I cannot find a compiler!'
 348          msg ' Neither of clang(1), gcc(1), tcc(1), pcc(1), c89(1) and c99(1).'
 349          msg ' Please set ${CC} environment variable, maybe ${CFLAGS}, rerun.'
 350          config_exit 1
 351       fi
 352    fi
 353    msg '%s' "${CC}"
 354    export CC
 355 }
 356
 357 _cc_default() {
 358    if [ -z "${CC}" ]; then
 359       msg 'To go on like you have chosen, please set $CC, rerun.'
 360       config_exit 1
 361    fi
 362
 363    if [ -z "${VERBOSE}" ] && [ -f ${lst} ] && feat_no DEBUG; then
 364       :
 365    else
 366       msg 'Using C compiler ${CC}=%s' "${CC}"
 367    fi
 368 }
 369
 370 cc_flags() {
 371    if feat_yes AUTOCC; then
 372       if [ -f ${lst} ] && feat_no DEBUG && [ -z "${VERBOSE}" ]; then
 373          cc_check_silent=1
 374          msg 'Detecting ${CFLAGS}/${LDFLAGS} for ${CC}=%s, just a second..' \
 375             "${CC}"
 376       else
 377          cc_check_silent=
 378          msg 'Testing usable ${CFLAGS}/${LDFLAGS} for ${CC}=%s' "${CC}"
 379       fi
 380
 381       i=`echo "${CC}" | ${awk} 'BEGIN{FS="/"}{print $NF}'`
 382       if { echo "${i}" | ${grep} tcc; } >/dev/null 2>&1; then
 383          msg ' . have special tcc(1) environmental rules ...'
 384          _cc_flags_tcc
 385       else
 386          # As of pcc CVS 2016-04-02, stack protection support is announced but
 387          # will break if used on Linux
 388          if { echo "${i}" | ${grep} pcc; } >/dev/null 2>&1; then
 389             force_no_stackprot=1
 390          fi
 391          _cc_flags_generic
 392       fi
 393
 394       feat_no DEBUG && _CFLAGS="-DNDEBUG ${_CFLAGS}"
 395       CFLAGS="${_CFLAGS} ${EXTRA_CFLAGS}"
 396       LDFLAGS="${_LDFLAGS} ${EXTRA_LDFLAGS}"
 397    else
 398       if feat_no DEBUG; then
 399          CFLAGS="-DNDEBUG ${CFLAGS}"
 400       fi
 401    fi
 402    msg ''
 403    export CFLAGS LDFLAGS
 404 }
 405
 406 _cc_flags_tcc() {
 407    __cflags=${_CFLAGS} __ldflags=${_LDFLAGS}
 408    _CFLAGS= _LDFLAGS=
 409
 410    cc_check -Wall
 411    cc_check -Wextra
 412    cc_check -pedantic
 413
 414    if feat_yes DEBUG; then
 415       # May have problems to find libtcc cc_check -b
 416       cc_check -g
 417    fi
 418
 419    if ld_check -Wl,-rpath =./ no; then
 420       need_R_ldflags=-Wl,-rpath=
 421       ld_check -Wl,--enable-new-dtags
 422       ld_runtime_flags # update!
 423    fi
 424
 425    _CFLAGS="${_CFLAGS} ${__cflags}" _LDFLAGS="${_LDFLAGS} ${__ldflags}"
 426    unset __cflags __ldflags
 427 }
 428
 429 _cc_flags_generic() {
 430    __cflags=${_CFLAGS} __ldflags=${_LDFLAGS}
 431    _CFLAGS= _LDFLAGS=
 432    feat_yes DEVEL && cc_check -std=c89 || cc_check -std=c99
 433
 434    # Check -g first since some others may rely upon -g / optim. level
 435    if feat_yes DEBUG; then
 436       cc_check -O
 437       cc_check -g
 438    elif [ ${cc_maxopt} -gt 2 ] && cc_check -O3; then
 439       :
 440    elif [ ${cc_maxopt} -gt 1 ] && cc_check -O2; then
 441       :
 442    elif [ ${cc_maxopt} -gt 0 ] && cc_check -O1; then
 443       :
 444    else
 445       cc_check -O
 446    fi
 447
 448    #if feat_yes DEVEL && cc_check -Weverything; then
 449    #   :
 450    #else
 451       cc_check -Wall
 452       cc_check -Wextra
 453       cc_check -Wbad-function-cast
 454       cc_check -Wcast-align
 455       cc_check -Wcast-qual
 456       cc_check -Winit-self
 457       cc_check -Wmissing-prototypes
 458       cc_check -Wshadow
 459       cc_check -Wunused
 460       cc_check -Wwrite-strings
 461       cc_check -Wno-long-long
 462    #fi
 463    cc_check -pedantic
 464
 465    if feat_yes AMALGAMATION && feat_no DEVEL; then
 466       cc_check -Wno-unused-function
 467    fi
 468    feat_no DEVEL && cc_check -Wno-unused-result # XXX do right way (pragma too)
 469
 470    cc_check -fno-unwind-tables
 471    cc_check -fno-asynchronous-unwind-tables
 472    cc_check -fstrict-aliasing
 473    if cc_check -fstrict-overflow && feat_yes DEVEL; then
 474       cc_check -Wstrict-overflow=5
 475    fi
 476
 477    if feat_yes DEBUG || feat_yes FORCED_STACKPROT; then
 478       if [ -z "${force_no_stackprot}" ]; then
 479          if cc_check -fstack-protector-strong ||
 480                cc_check -fstack-protector-all; then
 481             cc_check -D_FORTIFY_SOURCE=2
 482          fi
 483       else
 484          msg 'Not checking for -fstack-protector compiler option,'
 485          msg 'since that caused errors in a "similar" configuration.'
 486          msg 'You may turn off OPT_AUTOCC and use your own settings, rerun'
 487       fi
 488    fi
 489
 490    if feat_yes AMALGAMATION; then
 491       cc_check -pipe
 492    fi
 493
 494    # LD (+ dependend CC)
 495
 496    if feat_yes DEVEL; then
 497       _ccfg=${_CFLAGS}
 498       # -fsanitize=address
 499       #if cc_check -fsanitize=memory &&
 500       #      ld_check -fsanitize=memory &&
 501       #      cc_check -fsanitize-memory-track-origins=2 &&
 502       #      ld_check -fsanitize-memory-track-origins=2; then
 503       #   :
 504       #else
 505       #   _CFLAGS=${_ccfg}
 506       #fi
 507    fi
 508
 509    ld_check -Wl,-z,relro
 510    ld_check -Wl,-z,now
 511    ld_check -Wl,-z,noexecstack
 512    if ld_check -Wl,-rpath =./ no; then
 513       need_R_ldflags=-Wl,-rpath=
 514       # Choose DT_RUNPATH (after $LD_LIBRARY_PATH) over DT_RPATH (before)
 515       ld_check -Wl,--enable-new-dtags
 516       ld_runtime_flags # update!
 517    elif ld_check -Wl,-R ./ no; then
 518       need_R_ldflags=-Wl,-R
 519       ld_check -Wl,--enable-new-dtags
 520       ld_runtime_flags # update!
 521    fi
 522
 523    # Address randomization
 524    _ccfg=${_CFLAGS}
 525    if cc_check -fPIE || cc_check -fpie; then
 526       ld_check -pie || _CFLAGS=${_ccfg}
 527    fi
 528    unset _ccfg
 529
 530    _CFLAGS="${_CFLAGS} ${__cflags}" _LDFLAGS="${_LDFLAGS} ${__ldflags}"
 531    unset __cflags __ldflags
 532 }
 533
 534 ##  --  >8  - <<OS/CC | SUPPORT FUNS>> -  8<  --  ##
 535
 536 ## Notes:
 537 ## - Heirloom sh(1) (and same origin) have _sometimes_ problems with ': >'
 538 ##   redirection, so use "printf '' >" instead
 539
 540 ## Very first: we undergo several states regarding I/O redirection etc.,
 541 ## but need to deal with option updates from within all.  Since all the
 542 ## option stuff should be above the scissor line, define utility functions
 543 ## and redefine them as necessary.
 544 ## And, since we have those functions, simply use them for whatever
 545
 546 config_exit() {
 547    exit ${1}
 548 }
 549
 550 msg() {
 551    fmt=${1}
 552    shift
 553    printf >&2 -- "${fmt}\\n" "${@}"
 554 }
 555
 556 msg_nonl() {
 557    fmt=${1}
 558    shift
 559    printf >&2 -- "${fmt}" "${@}"
 560 }
 561
 562 t1=ten10one1ten10one1
 563 if ( [ ${t1##*ten10} = one1 ] && [ ${t1#*ten10} = one1ten10one1 ] &&
 564       [ ${t1%%one1*} = ten10 ] && [ ${t1%one1*} = ten10one1ten10 ]
 565       ) > /dev/null 2>&1; then
 566    good_shell=1
 567 else
 568    unset good_shell
 569 fi
 570 unset t1
 571
 572 # We need some standard utilities
 573 unset -f command
 574 check_tool() {
 575    n=${1} i=${2} opt=${3:-0}
 576    # Evaluate, just in case user comes in with shell snippets (..well..)
 577    eval i="${i}"
 578    if type "${i}" >/dev/null 2>&1; then # XXX why have i type not command -v?
 579       [ -n "${VERBOSE}" ] && msg ' . ${%s} ... %s' "${n}" "${i}"
 580       eval ${n}=${i}
 581       return 0
 582    fi
 583    if [ ${opt} -eq 0 ]; then
 584       msg 'ERROR: no trace of utility %s' "${n}"
 585       config_exit 1
 586    fi
 587    return 1
 588 }
 589
 590 # Our feature check environment
 591 feat_val_no() {
 592    [ "x${1}" = x0 ] || [ "x${1}" = xn ] ||
 593    [ "x${1}" = xfalse ] || [ "x${1}" = xno ] || [ "x${1}" = xoff ]
 594 }
 595
 596 feat_val_yes() {
 597    [ "x${1}" = x1 ] || [ "x${1}" = xy ] ||
 598    [ "x${1}" = xtrue ] || [ "x${1}" = xyes ] || [ "x${1}" = xon ] ||
 599          [ "x${1}" = xrequire ]
 600 }
 601
 602 feat_val_require() {
 603    [ "x${1}" = xrequire ]
 604 }
 605
 606 _feat_check() {
 607    eval i=\$OPT_${1}
 608    i="`echo ${i} | ${tr} '[A-Z]' '[a-z]'`"
 609    if feat_val_no "${i}"; then
 610       return 1
 611    elif feat_val_yes "${i}"; then
 612       return 0
 613    else
 614       msg "ERROR: %s: 0/n/false/no/off or 1/y/true/yes/on/require, got: %s" \
 615          "${1}" "${i}"
 616       config_exit 11
 617    fi
 618 }
 619
 620 feat_yes() {
 621    _feat_check ${1}
 622 }
 623
 624 feat_no() {
 625    _feat_check ${1} && return 1
 626    return 0
 627 }
 628
 629 feat_require() {
 630    eval i=\$OPT_${1}
 631    i="`echo ${i} | ${tr} '[A-Z]' '[a-z]'`"
 632    [ "x${i}" = xrequire ] || [ "x${i}" = xrequired ]
 633 }
 634
 635 feat_bail_required() {
 636    if feat_require ${1}; then
 637       msg 'ERROR: feature OPT_%s is required but not available' "${1}"
 638       config_exit 13
 639    fi
 640    eval OPT_${1}=0
 641    option_update # XXX this is rather useless here (dependency chain..)
 642 }
 643
 644 option_parse() {
 645    # Parse one of our XOPTIONS* in $2 and assign the sh(1) compatible list of
 646    # options, without documentation, to $1
 647    j=\'
 648    i="`${awk} -v input=\"${2}\" '
 649       BEGIN{
 650          for(i = 0;;){
 651             voff = match(input, /[[:alnum:]_]+(='${j}'[^'${j}']+)?/)
 652             if(voff == 0)
 653                break
 654             v = substr(input, voff, RLENGTH)
 655             input = substr(input, voff + RLENGTH)
 656             doff = index(v, "=")
 657             if(doff > 0){
 658                d = substr(v, doff + 2, length(v) - doff - 1)
 659                v = substr(v, 1, doff - 1)
 660             }
 661             print v
 662          }
 663       }
 664       '`"
 665    eval ${1}=\"${i}\"
 666 }
 667
 668 option_doc_of() {
 669    # Return the "documentation string" for option $1, itself if none such
 670    j=\'
 671    ${awk} -v want="${1}" \
 672       -v input="${XOPTIONS_DETECT}${XOPTIONS}${XOPTIONS_XTRA}" '
 673    BEGIN{
 674       for(;;){
 675          voff = match(input, /[[:alnum:]_]+(='${j}'[^'${j}']+)?/)
 676          if(voff == 0)
 677             break
 678          v = substr(input, voff, RLENGTH)
 679          input = substr(input, voff + RLENGTH)
 680          doff = index(v, "=")
 681          if(doff > 0){
 682             d = substr(v, doff + 2, length(v) - doff - 1)
 683             v = substr(v, 1, doff - 1)
 684          }else
 685             d = v
 686          if(v == want){
 687             if(d != "-")
 688                print d
 689             exit
 690          }
 691       }
 692    }
 693    '
 694 }
 695
 696 option_join_rc() {
 697    # Join the values from make.rc into what currently is defined, not
 698    # overwriting yet existing settings
 699    ${rm} -f ${tmp}
 700    # We want read(1) to perform reverse solidus escaping in order to be able to
 701    # use multiline values in make.rc; the resulting sh(1)/sed(1) code was very
 702    # slow in VMs (see [fa2e248]), Aharon Robbins suggested the following
 703    < ${rc} ${awk} 'BEGIN{line = ""}{
 704       gsub(/^[[:space:]]+/, "", $0)
 705       gsub(/[[:space:]]+$/, "", $0)
 706       if(gsub(/\\$/, "", $0)){
 707          line = line $0
 708          next
 709       }else
 710          line = line $0
 711       if(index(line, "#") == 1){
 712          line = ""
 713       }else if(length(line)){
 714          print line
 715          line = ""
 716       }
 717    }' |
 718    while read line; do
 719       if [ -n "${good_shell}" ]; then
 720          i=${line%%=*}
 721       else
 722          i=`${awk} -v LINE="${line}" 'BEGIN{
 723             gsub(/=.*$/, "", LINE)
 724             print LINE
 725          }'`
 726       fi
 727       if [ "${i}" = "${line}" ]; then
 728          msg 'ERROR: invalid syntax in: %s' "${line}"
 729          continue
 730       fi
 731
 732       eval j="\$${i}" jx="\${${i}+x}"
 733       if [ -n "${j}" ] || [ "${jx}" = x ]; then
 734          : # Yet present
 735       else
 736          j=`${awk} -v LINE="${line}" 'BEGIN{
 737             gsub(/^[^=]*=/, "", LINE)
 738             gsub(/^\"*/, "", LINE)
 739             gsub(/\"*$/, "", LINE)
 740             print LINE
 741          }'`
 742       fi
 743       [ "${i}" = "DESTDIR" ] && continue
 744       echo "${i}=\"${j}\""
 745    done > ${tmp}
 746    # Reread the mixed version right now
 747    . ./${tmp}
 748 }
 749
 750 option_evaluate() {
 751    # Expand the option values, which may contain shell snippets
 752    ${rm} -f ${newlst} ${newmk} ${newh}
 753    exec 5<&0 6>&1 <${tmp} >${newlst}
 754    while read line; do
 755       z=
 756       if [ -n "${good_shell}" ]; then
 757          i=${line%%=*}
 758          [ "${i}" != "${i#OPT_}" ] && z=1
 759       else
 760          i=`${awk} -v LINE="${line}" 'BEGIN{
 761             gsub(/=.*$/, "", LINE);\
 762             print LINE
 763          }'`
 764          if echo "${i}" | ${grep} '^OPT_' >/dev/null 2>&1; then
 765             z=1
 766          fi
 767       fi
 768
 769       eval j=\$${i}
 770       if [ -n "${z}" ]; then
 771          j="`echo ${j} | ${tr} '[A-Z]' '[a-z]'`"
 772          if [ -z "${j}" ] || feat_val_no "${j}"; then
 773             j=0
 774             printf "   /* #undef ${i} */\n" >> ${newh}
 775          elif feat_val_yes "${j}"; then
 776             if feat_val_require "${j}"; then
 777                j=require
 778             else
 779                j=1
 780             fi
 781             printf "   /* #define ${i} */\n" >> ${newh}
 782          else
 783             msg 'ERROR: cannot parse <%s>' "${line}"
 784             config_exit 1
 785          fi
 786       else
 787          printf "#define ${i} \"${j}\"\n" >> ${newh}
 788       fi
 789       printf "${i} = ${j}\n" >> ${newmk}
 790       printf "${i}=${j}\n"
 791       eval "${i}=\"${j}\""
 792    done
 793    exec 0<&5 1>&6 5<&- 6<&-
 794 }
 795
 796 path_check() {
 797    # "path_check VARNAME" or "path_check VARNAME FLAG VARNAME"
 798    varname=${1} addflag=${2} flagvarname=${3}
 799    j=${IFS}
 800    IFS=:
 801    eval "set -- \$${1}"
 802    IFS=${j}
 803    j= k= y= z=
 804    for i
 805    do
 806       [ -z "${i}" ] && continue
 807       [ -d "${i}" ] || continue
 808       # Skip any fakeroot packager environment
 809       case "${i}" in *fakeroot*) continue;; esac
 810       if [ -n "${j}" ]; then
 811          if { z=${y}; echo "${z}"; } | ${grep} ":${i}:" >/dev/null 2>&1; then
 812             :
 813          else
 814             y="${y} :${i}:"
 815             j="${j}:${i}"
 816             [ -n "${addflag}" ] && k="${k} ${addflag}${i}"
 817          fi
 818       else
 819          y=" :${i}:"
 820          j="${i}"
 821          [ -n "${addflag}" ] && k="${addflag}${i}"
 822       fi
 823    done
 824    eval "${varname}=\"${j}\""
 825    [ -n "${addflag}" ] && eval "${flagvarname}=\"${k}\""
 826    unset varname
 827 }
 828
 829 ld_runtime_flags() {
 830    if [ -n "${need_R_ldflags}" ]; then
 831       i=${IFS}
 832       IFS=:
 833       set -- ${LD_LIBRARY_PATH}
 834       IFS=${i}
 835       for i
 836       do
 837          LDFLAGS="${LDFLAGS} ${need_R_ldflags}${i}"
 838          _LDFLAGS="${_LDFLAGS} ${need_R_ldflags}${i}"
 839       done
 840       export LDFLAGS
 841    fi
 842    # Disable it for a possible second run.
 843    need_R_ldflags=
 844 }
 845
 846 cc_check() {
 847    [ -n "${cc_check_silent}" ] || msg_nonl ' . CC %s .. ' "${1}"
 848    if "${CC}" ${INCS} \
 849          ${_CFLAGS} ${1} ${EXTRA_CFLAGS} ${_LDFLAGS} ${EXTRA_LDFLAGS} \
 850          -o ${tmp2} ${tmp}.c ${LIBS} >/dev/null 2>&1; then
 851       _CFLAGS="${_CFLAGS} ${1}"
 852       [ -n "${cc_check_silent}" ] || msg 'yes'
 853       return 0
 854    fi
 855    [ -n "${cc_check_silent}" ] || msg 'no'
 856    return 1
 857 }
 858
 859 ld_check() {
 860    # $1=option [$2=option argument] [$3=if set, shall NOT be added to _LDFLAGS]
 861    [ -n "${cc_check_silent}" ] || msg_nonl ' . LD %s .. ' "${1}"
 862    if "${CC}" ${INCS} ${_CFLAGS} ${_LDFLAGS} ${1}${2} ${EXTRA_LDFLAGS} \
 863          -o ${tmp2} ${tmp}.c ${LIBS} >/dev/null 2>&1; then
 864       [ -n "${3}" ] || _LDFLAGS="${_LDFLAGS} ${1}"
 865       [ -n "${cc_check_silent}" ] || msg 'yes'
 866       return 0
 867    fi
 868    [ -n "${cc_check_silent}" ] || msg 'no'
 869    return 1
 870 }
 871
 872 _check_preface() {
 873    variable=$1 topic=$2 define=$3
 874
 875    echo '**********'
 876    msg_nonl ' . %s ... ' "${topic}"
 877    echo "/* checked ${topic} */" >> ${h}
 878    ${rm} -f ${tmp} ${tmp}.o
 879    echo '*** test program is'
 880    { echo '#include <'"${h_name}"'>'; cat; } | ${tee} ${tmp}.c
 881    #echo '*** the preprocessor generates'
 882    #${make} -f ${makefile} ${tmp}.x
 883    #${cat} ${tmp}.x
 884    echo '*** results are'
 885 }
 886
 887 without_check() {
 888    yesno=$1 variable=$2 topic=$3 define=$4 libs=$5 incs=$6
 889
 890    echo '**********'
 891    msg_nonl ' . %s ... ' "${topic}"
 892
 893    echo '*** enforced unchecked results are'
 894    if feat_val_yes ${yesno}; then
 895       if [ -n "${incs}" ] || [ -n "${libs}" ]; then
 896          echo "*** adding INCS<${incs}> LIBS<${libs}>"
 897          LIBS="${LIBS} ${libs}"
 898          echo "${libs}" >> ${lib}
 899          INCS="${INCS} ${incs}"
 900          echo "${incs}" >> ${inc}
 901       fi
 902       msg 'yes (deduced)'
 903       echo "${define}" >> ${h}
 904       eval have_${variable}=yes
 905       return 0
 906    else
 907       echo "/* ${define} */" >> ${h}
 908       msg 'no (deduced)'
 909       eval unset have_${variable}
 910       return 1
 911    fi
 912 }
 913
 914 compile_check() {
 915    variable=$1 topic=$2 define=$3
 916
 917    _check_preface "${variable}" "${topic}" "${define}"
 918
 919    if ${make} -f ${makefile} XINCS="${INCS}" \
 920             CFLAGS="${CFLAGS}" LDFLAGS="${LDFLAGS}" \
 921             ./${tmp}.o &&
 922          [ -f ./${tmp}.o ]; then
 923       msg 'yes'
 924       echo "${define}" >> ${h}
 925       eval have_${variable}=yes
 926       return 0
 927    else
 928       echo "/* ${define} */" >> ${h}
 929       msg 'no'
 930       eval unset have_${variable}
 931       return 1
 932    fi
 933 }
 934
 935 _link_mayrun() {
 936    run=$1 variable=$2 topic=$3 define=$4 libs=$5 incs=$6
 937
 938    _check_preface "${variable}" "${topic}" "${define}"
 939
 940    if feat_yes CROSS_BUILD; then
 941       if [ ${run} = 1 ]; then
 942          run=0
 943       fi
 944    fi
 945
 946    if ${make} -f ${makefile} XINCS="${INCS} ${incs}" \
 947             CFLAGS="${CFLAGS}" LDFLAGS="${LDFLAGS}" \
 948             XLIBS="${LIBS} ${libs}" \
 949             ./${tmp} &&
 950          [ -f ./${tmp} ] &&
 951          { [ ${run} -eq 0 ] || ./${tmp}; }; then
 952       echo "*** adding INCS<${incs}> LIBS<${libs}>; executed: ${run}"
 953       msg 'yes'
 954       echo "${define}" >> ${h}
 955       LIBS="${LIBS} ${libs}"
 956       echo "${libs}" >> ${lib}
 957       INCS="${INCS} ${incs}"
 958       echo "${incs}" >> ${inc}
 959       eval have_${variable}=yes
 960       return 0
 961    else
 962       msg 'no'
 963       echo "/* ${define} */" >> ${h}
 964       eval unset have_${variable}
 965       return 1
 966    fi
 967 }
 968
 969 link_check() {
 970    _link_mayrun 0 "${1}" "${2}" "${3}" "${4}" "${5}"
 971 }
 972
 973 run_check() {
 974    _link_mayrun 1 "${1}" "${2}" "${3}" "${4}" "${5}"
 975 }
 976
 977 xrun_check() {
 978    _link_mayrun 2 "${1}" "${2}" "${3}" "${4}" "${5}"
 979 }
 980
 981 feat_def() {
 982    if feat_yes ${1}; then
 983       echo '#define HAVE_'${1}'' >> ${h}
 984    else
 985       echo '/* OPT_'${1}'=0 */' >> ${h}
 986    fi
 987 }
 988
 989 squeeze_em() {
 990    < "${1}" > "${2}" ${awk} \
 991    'BEGIN {ORS = " "} /^[^#]/ {print} {next} END {ORS = ""; print "\n"}'
 992 }
 993
 994 ##  --  >8  - <<SUPPORT FUNS | RUNNING>> -  8<  --  ##
 995
 996 # First of all, create new configuration and check whether it changed
 997
 998 # Very easy checks for the operating system in order to be able to adjust paths
 999 # or similar very basic things which we need to be able to go at all
1000 os_early_setup
1001
1002 # Check those tools right now that we need before including $rc
1003 msg 'Checking for basic utility set'
1004 check_tool awk "${awk:-`command -v awk`}"
1005 check_tool rm "${rm:-`command -v rm`}"
1006 check_tool tr "${tr:-`command -v tr`}"
1007
1008 # Initialize the option set
1009 msg_nonl 'Setting up configuration options ... '
1010 option_setup
1011 msg 'done'
1012
1013 # Include $rc, but only take from it what wasn't overwritten by the user from
1014 # within the command line or from a chosen fixed CONFIG=
1015 # Note we leave alone the values
1016 trap "exit 1" HUP INT TERM
1017 trap "${rm} -f ${tmp}" EXIT
1018
1019 msg_nonl 'Joining in %s ... ' ${rc}
1020 option_join_rc
1021 msg 'done'
1022
1023 # We need to know about that now, in order to provide utility overwrites etc.
1024 os_setup
1025
1026 msg 'Checking for remaining set of utilities'
1027 check_tool grep "${grep:-`command -v grep`}"
1028
1029 # Before we step ahead with the other utilities perform a path cleanup first.
1030 path_check PATH
1031
1032 # awk(1) above
1033 check_tool cat "${cat:-`command -v cat`}"
1034 check_tool chmod "${chmod:-`command -v chmod`}"
1035 check_tool cp "${cp:-`command -v cp`}"
1036 check_tool cmp "${cmp:-`command -v cmp`}"
1037 # grep(1) above
1038 check_tool mkdir "${mkdir:-`command -v mkdir`}"
1039 check_tool mv "${mv:-`command -v mv`}"
1040 # rm(1) above
1041 check_tool sed "${sed:-`command -v sed`}"
1042 check_tool sort "${sort:-`command -v sort`}"
1043 check_tool tee "${tee:-`command -v tee`}"
1044
1045 check_tool chown "${chown:-`command -v chown`}" 1 ||
1046    check_tool chown "/sbin/chown" 1 ||
1047    check_tool chown "/usr/sbin/chown"
1048
1049 check_tool make "${MAKE:-`command -v make`}"
1050 MAKE=${make}
1051 check_tool strip "${STRIP:-`command -v strip`}" 1 &&
1052    HAVE_STRIP=1 || HAVE_STRIP=0
1053
1054 # For ./cc-test.sh only
1055 check_tool cksum "${cksum:-`command -v cksum`}"
1056
1057 # Update OPT_ options now, in order to get possible inter-dependencies right
1058 option_update
1059
1060 # (No functions since some shells loose non-exported variables in traps)
1061 trap "trap \"\" HUP INT TERM; exit 1" HUP INT TERM
1062 trap "trap \"\" HUP INT TERM EXIT;\
1063    ${rm} -rf ${newlst} ${tmp0}.* ${tmp0}* ${newmk} ${newev} ${newh}" EXIT
1064
1065 # Our configuration options may at this point still contain shell snippets,
1066 # we need to evaluate them in order to get them expanded, and we need those
1067 # evaluated values not only in our new configuration file, but also at hand..
1068 msg_nonl 'Evaluating all configuration items ... '
1069 option_evaluate
1070 msg 'done'
1071
1072 # Add the known utility and some other variables
1073 printf "#define VAL_UAGENT \"${VAL_SID}${VAL_NAIL}\"\n" >> ${newh}
1074 printf "VAL_UAGENT = ${VAL_SID}${VAL_NAIL}\n" >> ${newmk}
1075
1076 printf "#define VAL_PRIVSEP \"${VAL_SID}${VAL_NAIL}-privsep\"\n" >> ${newh}
1077 printf "VAL_PRIVSEP = \$(VAL_UAGENT)-privsep\n" >> ${newmk}
1078 if feat_yes DOTLOCK; then
1079    printf "OPTIONAL_PRIVSEP = \$(VAL_PRIVSEP)\n" >> ${newmk}
1080 else
1081    printf "OPTIONAL_PRIVSEP =\n" >> ${newmk}
1082 fi
1083
1084 for i in \
1085       awk cat chmod chown cp cmp grep mkdir mv rm sed sort tee tr \
1086       MAKE MAKEFLAGS make SHELL strip \
1087       cksum; do
1088    eval j=\$${i}
1089    printf "${i} = ${j}\n" >> ${newmk}
1090    printf "${i}=${j}\n" >> ${newlst}
1091    printf "${i}=\"${j}\";export ${i}; " >> ${newev}
1092 done
1093 printf "\n" >> ${newev}
1094
1095 # Build a basic set of INCS and LIBS according to user environment.
1096 path_check C_INCLUDE_PATH -I _INCS
1097 INCS="${INCS} ${_INCS}"
1098 path_check LD_LIBRARY_PATH -L _LIBS
1099 LIBS="${LIBS} ${_LIBS}"
1100 unset _INCS _LIBS
1101 export C_INCLUDE_PATH LD_LIBRARY_PATH
1102
1103 # Some environments need runtime path flags to be able to go at all
1104 ld_runtime_flags
1105
1106 ## Detect CC, whether we can use it, and possibly which CFLAGS we can use
1107
1108 cc_setup
1109
1110 ${cat} > ${tmp}.c << \!
1111 #include <stdio.h>
1112 #include <string.h>
1113 static void doit(char const *s);
1114 int
1115 main(int argc, char **argv){
1116    (void)argc;
1117    (void)argv;
1118    doit("Hello world");
1119    return 0;
1120 }
1121 static void
1122 doit(char const *s){
1123    char buf[12];
1124    memcpy(buf, s, strlen(s) +1);
1125    puts(s);
1126 }
1127 !
1128
1129 if "${CC}" ${INCS} ${CFLAGS} ${EXTRA_CFLAGS} ${LDFLAGS} ${EXTRA_LDFLAGS} \
1130       -o ${tmp2} ${tmp}.c ${LIBS}; then
1131    :
1132 else
1133    msg 'ERROR: i cannot compile a "Hello world" via'
1134    msg '   %s' \
1135    "${CC} ${INCS} ${CFLAGS} ${EXTRA_CFLAGS} ${LDFLAGS} ${EXTRA_LDFLAGS} ${LIBS}"
1136    msg 'ERROR:   Please read INSTALL, rerun'
1137    config_exit 1
1138 fi
1139
1140 # This may also update ld_runtime_flags() (again)
1141 cc_flags
1142
1143 for i in \
1144       INCS LIBS \
1145       ; do
1146    eval j=\$${i}
1147    printf -- "${i}=${j}\n" >> ${newlst}
1148 done
1149 for i in \
1150       CC \
1151       CFLAGS \
1152       LDFLAGS \
1153       PATH C_INCLUDE_PATH LD_LIBRARY_PATH \
1154       OSFULLSPEC \
1155       ; do
1156    eval j=\$${i}
1157    printf -- "${i} = ${j}\n" >> ${newmk}
1158    printf -- "${i}=${j}\n" >> ${newlst}
1159 done
1160
1161 # Now finally check whether we already have a configuration and if so, whether
1162 # all those parameters are still the same.. or something has actually changed
1163 if [ -f ${lst} ] && ${cmp} ${newlst} ${lst} >/dev/null 2>&1; then
1164    echo 'Configuration is up-to-date'
1165    exit 0
1166 elif [ -f ${lst} ]; then
1167    echo 'Configuration has been updated..'
1168    ( eval "${MAKE} -f ./mk.mk clean" )
1169    echo
1170 else
1171    echo 'Shiny configuration..'
1172 fi
1173
1174 # Time to redefine helper 1
1175 config_exit() {
1176    ${rm} -f ${lst} ${h} ${mk}
1177    exit ${1}
1178 }
1179
1180 ${mv} -f ${newlst} ${lst}
1181 ${mv} -f ${newev} ${ev}
1182 ${mv} -f ${newh} ${h}
1183 ${mv} -f ${newmk} ${mk}
1184
1185 if [ -z "${VERBOSE}" ]; then
1186    printf -- "ECHO_CC = @echo '  'CC \$(@);\n" >> ${mk}
1187    printf -- "ECHO_LINK = @echo '  'LINK \$(@);\n" >> ${mk}
1188    printf -- "ECHO_GEN = @echo '  'GEN \$(@);\n" >> ${mk}
1189    printf -- "ECHO_TEST = @\n" >> ${mk}
1190    printf -- "ECHO_CMD = @echo '  CMD';\n" >> ${mk}
1191    printf -- "ECHO_BLOCK_BEGIN = @( \n" >> ${mk}
1192    printf -- "ECHO_BLOCK_END = ) >/dev/null\n" >> ${mk}
1193 fi
1194
1195 ## Compile and link checking
1196
1197 tmp3=./${tmp0}3$$
1198 log=./config.log
1199 lib=./config.lib
1200 inc=./config.inc
1201 makefile=./config.mk
1202
1203 # (No function since some shells loose non-exported variables in traps)
1204 trap "trap \"\" HUP INT TERM;\
1205    ${rm} -f ${lst} ${h} ${mk} ${lib} ${inc}; exit 1" HUP INT TERM
1206 trap "trap \"\" HUP INT TERM EXIT;\
1207    ${rm} -rf ${tmp0}.* ${tmp0}* ${makefile}" EXIT
1208
1209 # Time to redefine helper 2
1210 msg() {
1211    fmt=${1}
1212    shift
1213    printf "*** ${fmt}\\n" "${@}"
1214    printf -- "${fmt}\\n" "${@}" >&5
1215 }
1216 msg_nonl() {
1217    fmt=${1}
1218    shift
1219    printf "*** ${fmt}\\n" "${@}"
1220    printf -- "${fmt}" "${@}" >&5
1221 }
1222
1223 # !!
1224 exec 5>&2 > ${log} 2>&1
1225
1226 echo "${LIBS}" > ${lib}
1227 echo "${INCS}" > ${inc}
1228 ${cat} > ${makefile} << \!
1229 .SUFFIXES: .o .c .x .y
1230 .c.o:
1231         $(CC) -I./ $(XINCS) $(CFLAGS) -c $(<)
1232 .c.x:
1233         $(CC) -I./ $(XINCS) -E $(<) > $(@)
1234 .c:
1235         $(CC) -I./ $(XINCS) $(CFLAGS) $(LDFLAGS) -o $(@) $(<) $(XLIBS)
1236 !
1237
1238 ## Generics
1239
1240 # May be multiline..
1241 [ -n "${OS_DEFINES}" ] && printf -- "${OS_DEFINES}" >> ${h}
1242
1243 feat_def ALWAYS_UNICODE_LOCALE
1244 feat_def AMALGAMATION
1245 feat_def CROSS_BUILD
1246 feat_def DEBUG
1247 feat_def DEVEL
1248 feat_def DOCSTRINGS
1249 feat_def ERRORS
1250 feat_def NYD2
1251 feat_def NOMEMDBG
1252
1253 if xrun_check inline 'inline functions' \
1254    '#define HAVE_INLINE
1255    #define n_INLINE static inline' << \!
1256 static inline int ilf(int i){return ++i;}
1257 int main(void){return ilf(-1);}
1258 !
1259 then
1260    :
1261 elif xrun_check inline 'inline functions (via __inline)' \
1262    '#define HAVE_INLINE
1263    #define n_INLINE static __inline' << \!
1264 static __inline int ilf(int i){return ++i;}
1265 int main(void){return ilf(-1);}
1266 !
1267 then
1268    :
1269 fi
1270
1271 ## Test for "basic" system-calls / functionality that is used by all parts
1272 ## of our program.  Once this is done fork away BASE_LIBS and other BASE_*
1273 ## macros to be used by only the subprograms (potentially).
1274
1275 if run_check clock_gettime 'clock_gettime(2)' \
1276    '#define HAVE_CLOCK_GETTIME' << \!
1277 #include <time.h>
1278 # include <errno.h>
1279 int main(void){
1280    struct timespec ts;
1281
1282    if(!clock_gettime(CLOCK_REALTIME, &ts) || errno != ENOSYS)
1283       return 0;
1284    return 1;
1285 }
1286 !
1287 then
1288    :
1289 elif run_check clock_gettime 'clock_gettime(2) (via -lrt)' \
1290    '#define HAVE_CLOCK_GETTIME' '-lrt' << \!
1291 #include <time.h>
1292 # include <errno.h>
1293 int main(void){
1294    struct timespec ts;
1295
1296    if(!clock_gettime(CLOCK_REALTIME, &ts) || errno != ENOSYS)
1297       return 0;
1298    return 1;
1299 }
1300 !
1301 then
1302    :
1303 elif run_check gettimeofday 'gettimeofday(2)' \
1304    '#define HAVE_GETTIMEOFDAY' << \!
1305 #include <stdio.h> /* For C89 NULL */
1306 #include <sys/time.h>
1307 # include <errno.h>
1308 int main(void){
1309    struct timeval tv;
1310
1311    if(!gettimeofday(&tv, NULL) || errno != ENOSYS)
1312       return 0;
1313    return 1;
1314 }
1315 !
1316 then
1317    :
1318 else
1319    have_no_subsecond_time=1
1320 fi
1321
1322 if run_check nanosleep 'nanosleep(2)' \
1323    '#define HAVE_NANOSLEEP' << \!
1324 #include <time.h>
1325 # include <errno.h>
1326 int main(void){
1327    struct timespec ts;
1328
1329    ts.tv_sec = 1;
1330    ts.tv_nsec = 100000;
1331    if(!nanosleep(&ts, NULL) || errno != ENOSYS)
1332       return 0;
1333    return 1;
1334 }
1335 !
1336 then
1337    :
1338 elif run_check nanosleep 'nanosleep(2) (via -lrt)' \
1339    '#define HAVE_NANOSLEEP' '-lrt' << \!
1340 #include <time.h>
1341 # include <errno.h>
1342 int main(void){
1343    struct timespec ts;
1344
1345    ts.tv_sec = 1;
1346    ts.tv_nsec = 100000;
1347    if(!nanosleep(&ts, NULL) || errno != ENOSYS)
1348       return 0;
1349    return 1;
1350 }
1351 !
1352 then
1353    :
1354 # link_check is enough for this, that function is so old, trust the proto
1355 elif link_check sleep 'sleep(3)' \
1356    '#define HAVE_SLEEP' << \!
1357 #include <unistd.h>
1358 # include <errno.h>
1359 int main(void){
1360    if(!sleep(1) || errno != ENOSYS)
1361       return 0;
1362    return 1;
1363 }
1364 !
1365 then
1366    :
1367 else
1368    msg 'ERROR: we require one of nanosleep(2) and sleep(3).'
1369    config_exit 1
1370 fi
1371
1372 if run_check userdb 'gete?[gu]id(2), getpwuid(3), getpwnam(3)' << \!
1373 #include <pwd.h>
1374 #include <unistd.h>
1375 # include <errno.h>
1376 int main(void){
1377    struct passwd *pw;
1378    gid_t gid;
1379    uid_t uid;
1380
1381    if((gid = getgid()) != 0)
1382       gid = getegid();
1383    if((uid = getuid()) != 0)
1384       uid = geteuid();
1385    if((pw = getpwuid(uid)) == NULL && errno == ENOSYS)
1386       return 1;
1387    if((pw = getpwnam("root")) == NULL && errno == ENOSYS)
1388       return 1;
1389    return 0;
1390 }
1391 !
1392 then
1393    :
1394 else
1395    msg 'ERROR: we require user and group info / database searches.'
1396    msg 'That much Unix we indulge ourselfs.'
1397    config_exit 1
1398 fi
1399
1400 if link_check ftruncate 'ftruncate(2)' \
1401    '#define HAVE_FTRUNCATE' << \!
1402 #include <unistd.h>
1403 #include <sys/types.h>
1404 int main(void){
1405    return (ftruncate(0, 0) != 0);
1406 }
1407 !
1408 then
1409    :
1410 else
1411    msg 'ERROR: we require the ftruncate(2) system call.'
1412    config_exit 1
1413 fi
1414
1415 if run_check sa_restart 'SA_RESTART (for sigaction(2))' << \!
1416 #include <signal.h>
1417 # include <errno.h>
1418 int main(void){
1419    struct sigaction nact, oact;
1420
1421    nact.sa_handler = SIG_DFL;
1422    sigemptyset(&nact.sa_mask);
1423    nact.sa_flags = SA_RESTART;
1424    return !(!sigaction(SIGCHLD, &nact, &oact) || errno != ENOSYS);
1425 }
1426 !
1427 then
1428    :
1429 else
1430    msg 'ERROR: we (yet) require the SA_RESTART flag for sigaction(2).'
1431    config_exit 1
1432 fi
1433
1434 if link_check snprintf 'snprintf(3)' << \!
1435 #include <stdio.h>
1436 int main(void){
1437    char b[20];
1438
1439    snprintf(b, sizeof b, "%s", "string");
1440    return 0;
1441 }
1442 !
1443 then
1444    :
1445 else
1446    msg 'ERROR: we require the snprintf(3) function.'
1447    config_exit 1
1448 fi
1449
1450 if link_check environ 'environ(3)' << \!
1451 #include <stdio.h> /* For C89 NULL */
1452 int main(void){
1453    extern char **environ;
1454
1455    return environ[0] == NULL;
1456 }
1457 !
1458 then
1459    :
1460 else
1461    msg 'ERROR: we require the environ(3) array for subprocess control.'
1462    config_exit 1
1463 fi
1464
1465 if link_check setenv '(un)?setenv(3)' '#define HAVE_SETENV' << \!
1466 #include <stdlib.h>
1467 int main(void){
1468    setenv("s-mailx", "i want to see it cute!", 1);
1469    unsetenv("s-mailx");
1470    return 0;
1471 }
1472 !
1473 then
1474    :
1475 elif link_check setenv 'putenv(3)' '#define HAVE_PUTENV' << \!
1476 #include <stdlib.h>
1477 int main(void){
1478    putenv("s-mailx=i want to see it cute!");
1479    return 0;
1480 }
1481 !
1482 then
1483    :
1484 else
1485    msg 'ERROR: we require either the setenv(3) or putenv(3) functions.'
1486    config_exit 1
1487 fi
1488
1489 if link_check termios 'termios.h and tc*(3) family' << \!
1490 #include <termios.h>
1491 int main(void){
1492    struct termios tios;
1493
1494    tcgetattr(0, &tios);
1495    tcsetattr(0, TCSANOW | TCSADRAIN | TCSAFLUSH, &tios);
1496    return 0;
1497 }
1498 !
1499 then
1500    :
1501 else
1502    msg 'ERROR: we require termios.h and the tc*() family of functions.'
1503    msg 'That much Unix we indulge ourselfs.'
1504    config_exit 1
1505 fi
1506
1507 ## optional stuff
1508
1509 if link_check vsnprintf 'vsnprintf(3)' << \!
1510 #include <stdarg.h>
1511 #include <stdio.h>
1512 static void dome(char *buf, size_t blen, ...){
1513    va_list ap;
1514
1515    va_start(ap, blen);
1516    vsnprintf(buf, blen, "%s", ap);
1517    va_end(ap);
1518 }
1519 int main(void){
1520    char b[20];
1521
1522    dome(b, sizeof b, "string");
1523    return 0;
1524 }
1525 !
1526 then
1527    :
1528 else
1529    feat_bail_required ERRORS
1530 fi
1531
1532 if [ "${have_vsnprintf}" = yes ]; then
1533    __va_copy() {
1534       link_check va_copy "va_copy(3) (as ${2})" \
1535          "#define HAVE_N_VA_COPY
1536 #define n_va_copy ${2}" <<_EOT
1537 #include <stdarg.h>
1538 #include <stdio.h>
1539 #if ${1}
1540 # if defined __va_copy && !defined va_copy
1541 #  define va_copy __va_copy
1542 # endif
1543 #endif
1544 static void dome2(char *buf, size_t blen, va_list src){
1545    va_list ap;
1546
1547    va_copy(ap, src);
1548    vsnprintf(buf, blen, "%s", ap);
1549    va_end(ap);
1550 }
1551 static void dome(char *buf, size_t blen, ...){
1552    va_list ap;
1553
1554    va_start(ap, blen);
1555    dome2(buf, blen, ap);
1556    va_end(ap);
1557 }
1558 int main(void){
1559    char b[20];
1560
1561    dome(b, sizeof b, "string");
1562    return 0;
1563 }
1564 _EOT
1565    }
1566    __va_copy 0 va_copy || __va_copy 1 __va_copy
1567 fi
1568
1569 run_check pathconf 'f?pathconf(2)' '#define HAVE_PATHCONF' << \!
1570 #include <unistd.h>
1571 #include <errno.h>
1572 int main(void){
1573    int rv = 0;
1574
1575    errno = 0;
1576    rv |= !(pathconf(".", _PC_NAME_MAX) >= 0 || errno == 0 || errno != ENOSYS);
1577    errno = 0;
1578    rv |= !(pathconf(".", _PC_PATH_MAX) >= 0 || errno == 0 || errno != ENOSYS);
1579
1580    /* Only link check */
1581    fpathconf(0, _PC_NAME_MAX);
1582
1583    return rv;
1584 }
1585 !
1586
1587 run_check pipe2 'pipe2(2)' '#define HAVE_PIPE2' << \!
1588 #include <fcntl.h>
1589 #include <unistd.h>
1590 # include <errno.h>
1591 int main(void){
1592    int fds[2];
1593
1594    if(!pipe2(fds, O_CLOEXEC) || errno != ENOSYS)
1595       return 0;
1596    return 1;
1597 }
1598 !
1599
1600 # We use this only then for now (need NOW+1)
1601 run_check utimensat 'utimensat(2)' '#define HAVE_UTIMENSAT' << \!
1602 #include <fcntl.h> /* For AT_* */
1603 #include <sys/stat.h>
1604 # include <errno.h>
1605 int main(void){
1606    struct timespec ts[2];
1607
1608    ts[0].tv_nsec = UTIME_NOW;
1609    ts[1].tv_nsec = UTIME_OMIT;
1610    if(!utimensat(AT_FDCWD, "", ts, 0) || errno != ENOSYS)
1611       return 0;
1612    return 1;
1613 }
1614 !
1615
1616 ##
1617
1618 # XXX Add POSIX check once standardized
1619 if link_check posix_random 'arc4random(3)' '#define HAVE_POSIX_RANDOM 0' << \!
1620 #include <stdlib.h>
1621 int main(void){
1622    arc4random();
1623    return 0;
1624 }
1625 !
1626 then
1627    :
1628 elif link_check getrandom 'getrandom(2) (in sys/random.h)' \
1629       '#define HAVE_GETRANDOM(B,S) getrandom(B, S, 0)
1630       #define HAVE_GETRANDOM_HEADER <sys/random.h>' <<\!
1631 #include <sys/random.h>
1632 int main(void){
1633    char buf[256];
1634    getrandom(buf, sizeof buf, 0);
1635    return 0;
1636 }
1637 !
1638 then
1639    :
1640 elif link_check getrandom 'getrandom(2) (via syscall(2))' \
1641       '#define HAVE_GETRANDOM(B,S) syscall(SYS_getrandom, B, S, 0)
1642       #define HAVE_GETRANDOM_HEADER <sys/syscall.h>' <<\!
1643 #include <sys/syscall.h>
1644 int main(void){
1645    char buf[256];
1646    syscall(SYS_getrandom, buf, sizeof buf, 0);
1647    return 0;
1648 }
1649 !
1650 then
1651    :
1652 elif [ -n "${have_no_subsecond_time}" ]; then
1653    msg 'ERROR: %s %s' 'without a native random' \
1654       'one of clock_gettime(2) and gettimeofday(2) is required.'
1655    config_exit 1
1656 fi
1657
1658
1659 link_check putc_unlocked 'putc_unlocked(3)' '#define HAVE_PUTC_UNLOCKED' <<\!
1660 #include <stdio.h>
1661 int main(void){
1662    putc_unlocked('@', stdout);
1663    return 0;
1664 }
1665 !
1666
1667 link_check fchdir 'fchdir(3)' '#define HAVE_FCHDIR' << \!
1668 #include <unistd.h>
1669 int main(void){
1670    fchdir(0);
1671    return 0;
1672 }
1673 !
1674
1675 if run_check realpath 'realpath(3)' '#define HAVE_REALPATH' << \!
1676 #include <stdlib.h>
1677 int main(void){
1678    char x_buf[4096], *x = realpath(".", x_buf);
1679
1680    return (x != NULL) ? 0 : 1;
1681 }
1682 !
1683 then
1684    if run_check realpath_malloc 'realpath(3) takes NULL' \
1685          '#define HAVE_REALPATH_NULL' << \!
1686 #include <stdlib.h>
1687 int main(void){
1688    char *x = realpath(".", NULL);
1689
1690    if(x != NULL)
1691       free(x);
1692    return (x != NULL) ? 0 : 1;
1693 }
1694 !
1695    then
1696       :
1697    fi
1698 fi
1699
1700 ## optional and selectable
1701
1702 if feat_yes DOTLOCK; then
1703    if run_check readlink 'readlink(2)' << \!
1704 #include <unistd.h>
1705 # include <errno.h>
1706 int main(void){
1707    char buf[128];
1708
1709    if(!readlink("here", buf, sizeof buf) || errno != ENOSYS)
1710       return 0;
1711    return 1;
1712 }
1713 !
1714    then
1715       :
1716    else
1717       feat_bail_required DOTLOCK
1718    fi
1719 fi
1720
1721 if feat_yes DOTLOCK; then
1722    if run_check fchown 'fchown(2)' << \!
1723 #include <unistd.h>
1724 # include <errno.h>
1725 int main(void){
1726    if(!fchown(0, 0, 0) || errno != ENOSYS)
1727       return 0;
1728    return 1;
1729 }
1730 !
1731    then
1732       :
1733    else
1734       feat_bail_required DOTLOCK
1735    fi
1736 fi
1737
1738 ## Now it is the time to fork away the BASE_ series
1739
1740 ${rm} -f ${tmp}
1741 squeeze_em ${inc} ${tmp}
1742 ${mv} ${tmp} ${inc}
1743 squeeze_em ${lib} ${tmp}
1744 ${mv} ${tmp} ${lib}
1745
1746 echo "BASE_LIBS = `${cat} ${lib}`" >> ${mk}
1747 echo "BASE_INCS = `${cat} ${inc}`" >> ${mk}
1748
1749 ## The remains are expected to be used only by the main MUA binary!
1750
1751 OPT_LOCALES=0
1752 link_check setlocale 'setlocale(3)' '#define HAVE_SETLOCALE' << \!
1753 #include <locale.h>
1754 int main(void){
1755    setlocale(LC_ALL, "");
1756    return 0;
1757 }
1758 !
1759 [ -n "${have_setlocale}" ] && OPT_LOCALES=1
1760
1761 OPT_MULTIBYTE_CHARSETS=0
1762 OPT_WIDE_GLYPHS=0
1763 OPT_TERMINAL_CHARSET=0
1764 if [ -n "${have_setlocale}" ]; then
1765    link_check c90amend1 'ISO/IEC 9899:1990/Amendment 1:1995' \
1766       '#define HAVE_C90AMEND1' << \!
1767 #include <limits.h>
1768 #include <stdlib.h>
1769 #include <wchar.h>
1770 #include <wctype.h>
1771 int main(void){
1772    char mbb[MB_LEN_MAX + 1];
1773    wchar_t wc;
1774
1775    iswprint(L'c');
1776    towupper(L'c');
1777    mbtowc(&wc, "x", 1);
1778    mbrtowc(&wc, "x", 1, NULL);
1779    wctomb(mbb, wc);
1780    return (mblen("\0", 1) == 0);
1781 }
1782 !
1783    [ -n "${have_c90amend1}" ] && OPT_MULTIBYTE_CHARSETS=1
1784
1785    if [ -n "${have_c90amend1}" ]; then
1786       link_check wcwidth 'wcwidth(3)' '#define HAVE_WCWIDTH' << \!
1787 #include <wchar.h>
1788 int main(void){
1789    wcwidth(L'c');
1790    return 0;
1791 }
1792 !
1793       [ -n "${have_wcwidth}" ] && OPT_WIDE_GLYPHS=1
1794    fi
1795
1796    link_check nl_langinfo 'nl_langinfo(3)' '#define HAVE_NL_LANGINFO' << \!
1797 #include <langinfo.h>
1798 #include <stdlib.h>
1799 int main(void){
1800    nl_langinfo(DAY_1);
1801    return (nl_langinfo(CODESET) == NULL);
1802 }
1803 !
1804    [ -n "${have_nl_langinfo}" ] && OPT_TERMINAL_CHARSET=1
1805 fi # have_setlocale
1806
1807 link_check fnmatch 'fnmatch(3)' '#define HAVE_FNMATCH' << \!
1808 #include <fnmatch.h>
1809 int main(void){
1810    return (fnmatch("*", ".", FNM_PATHNAME | FNM_PERIOD) == FNM_NOMATCH);
1811 }
1812 !
1813
1814 link_check dirent_d_type 'struct dirent.d_type' '#define HAVE_DIRENT_TYPE' << \!
1815 #include <dirent.h>
1816 int main(void){
1817    struct dirent de;
1818    return !(de.d_type == DT_UNKNOWN ||
1819       de.d_type == DT_DIR || de.d_type == DT_LNK);
1820 }
1821 !
1822
1823 ## optional and selectable
1824
1825 if feat_yes ICONV; then
1826    ${cat} > ${tmp2}.c << \!
1827 #include <stdio.h> /* For C89 NULL */
1828 #include <iconv.h>
1829 int main(void){
1830    iconv_t id;
1831
1832    id = iconv_open("foo", "bar");
1833    iconv(id, NULL, NULL, NULL, NULL);
1834    iconv_close(id);
1835    return 0;
1836 }
1837 !
1838    < ${tmp2}.c link_check iconv 'iconv(3) functionality' \
1839          '#define HAVE_ICONV' ||
1840       < ${tmp2}.c link_check iconv 'iconv(3) functionality (via -liconv)' \
1841          '#define HAVE_ICONV' '-liconv' ||
1842       feat_bail_required ICONV
1843 else
1844    echo '/* OPT_ICONV=0 */' >> ${h}
1845 fi # feat_yes ICONV
1846
1847 if feat_yes SOCKETS || feat_yes SPAM_SPAMD; then
1848    ${cat} > ${tmp2}.c << \!
1849 #include <sys/types.h>
1850 #include <sys/socket.h>
1851 #include <sys/un.h>
1852 # include <errno.h>
1853 int main(void){
1854    struct sockaddr_un soun;
1855
1856    if(socket(AF_UNIX, SOCK_STREAM, 0) == -1 && errno == ENOSYS)
1857       return 1;
1858    if(connect(0, (struct sockaddr*)&soun, 0) == -1 && errno == ENOSYS)
1859       return 1;
1860    if(shutdown(0, SHUT_RD | SHUT_WR | SHUT_RDWR) == -1 && errno == ENOSYS)
1861       return 1;
1862    return 0;
1863 }
1864 !
1865
1866    < ${tmp2}.c run_check af_unix 'AF_UNIX sockets' \
1867          '#define HAVE_UNIX_SOCKETS' ||
1868       < ${tmp2}.c run_check af_unix 'AF_UNIX sockets (via -lnsl)' \
1869          '#define HAVE_UNIX_SOCKETS' '-lnsl' ||
1870       < ${tmp2}.c run_check af_unix 'AF_UNIX sockets (via -lsocket -lnsl)' \
1871          '#define HAVE_UNIX_SOCKETS' '-lsocket -lnsl'
1872 fi
1873
1874 if feat_yes SOCKETS; then
1875    ${cat} > ${tmp2}.c << \!
1876 #include "config.h"
1877 #include <sys/types.h>
1878 #include <sys/socket.h>
1879 #include <netinet/in.h>
1880 # include <errno.h>
1881 int main(void){
1882    struct sockaddr s;
1883
1884    if(socket(AF_INET, SOCK_STREAM, 0) == -1 && errno == ENOSYS)
1885       return 1;
1886    if(connect(0, &s, 0) == -1 && errno == ENOSYS)
1887       return 1;
1888    return 0;
1889 }
1890 !
1891
1892    < ${tmp2}.c run_check sockets 'sockets' \
1893          '#define HAVE_SOCKETS' ||
1894       < ${tmp2}.c run_check sockets 'sockets (via -lnsl)' \
1895          '#define HAVE_SOCKETS' '-lnsl' ||
1896       < ${tmp2}.c run_check sockets 'sockets (via -lsocket -lnsl)' \
1897          '#define HAVE_SOCKETS' '-lsocket -lnsl' ||
1898       feat_bail_required SOCKETS
1899 else
1900    echo '/* OPT_SOCKETS=0 */' >> ${h}
1901 fi # feat_yes SOCKETS
1902
1903 if feat_yes SOCKETS; then
1904    link_check getaddrinfo 'getaddrinfo(3)' \
1905       '#define HAVE_GETADDRINFO' << \!
1906 #include "config.h"
1907 #include <sys/types.h>
1908 #include <sys/socket.h>
1909 #include <stdio.h>
1910 #include <netdb.h>
1911 int main(void){
1912    struct addrinfo a, *ap;
1913    int lrv;
1914
1915    switch((lrv = getaddrinfo("foo", "0", &a, &ap))){
1916    case EAI_NONAME:
1917    case EAI_SERVICE:
1918    default:
1919       fprintf(stderr, "%s\n", gai_strerror(lrv));
1920    case 0:
1921       break;
1922    }
1923    return 0;
1924 }
1925 !
1926 fi
1927
1928 if feat_yes SOCKETS && [ -z "${have_getaddrinfo}" ]; then
1929    compile_check arpa_inet_h '<arpa/inet.h>' \
1930       '#define HAVE_ARPA_INET_H' << \!
1931 #include "config.h"
1932 #include <sys/types.h>
1933 #include <sys/socket.h>
1934 #include <netdb.h>
1935 #include <netinet/in.h>
1936 #include <arpa/inet.h>
1937 !
1938
1939    ${cat} > ${tmp2}.c << \!
1940 #include "config.h"
1941 #include <sys/types.h>
1942 #include <sys/socket.h>
1943 #include <stdio.h>
1944 #include <string.h>
1945 #include <netdb.h>
1946 #include <netinet/in.h>
1947 #ifdef HAVE_ARPA_INET_H
1948 #include <arpa/inet.h>
1949 #endif
1950 int main(void){
1951    struct sockaddr_in servaddr;
1952    unsigned short portno;
1953    struct servent *ep;
1954    struct hostent *hp;
1955    struct in_addr **pptr;
1956
1957    portno = 0;
1958    if((ep = getservbyname("POPPY-PORT", "tcp")) != NULL)
1959       portno = (unsigned short)ep->s_port;
1960
1961    if((hp = gethostbyname("POPPY-HOST")) != NULL){
1962       pptr = (struct in_addr**)hp->h_addr_list;
1963       if(hp->h_addrtype != AF_INET)
1964          fprintf(stderr, "au\n");
1965    }else{
1966       switch(h_errno){
1967       case HOST_NOT_FOUND:
1968       case TRY_AGAIN:
1969       case NO_RECOVERY:
1970       case NO_DATA:
1971          break;
1972       default:
1973          fprintf(stderr, "au\n");
1974          break;
1975       }
1976    }
1977
1978    memset(&servaddr, 0, sizeof servaddr);
1979    servaddr.sin_family = AF_INET;
1980    servaddr.sin_port = htons(portno);
1981    memcpy(&servaddr.sin_addr, *pptr, sizeof(struct in_addr));
1982    fprintf(stderr, "Would connect to %s:%d ...\n",
1983       inet_ntoa(**pptr), (int)portno);
1984    return 0;
1985 }
1986 !
1987
1988    < ${tmp2}.c link_check gethostbyname 'get(serv|host)byname(3)' ||
1989       < ${tmp2}.c link_check gethostbyname \
1990          'get(serv|host)byname(3) (via -nsl)' '' '-lnsl' ||
1991       < ${tmp2}.c link_check gethostbyname \
1992          'get(serv|host)byname(3) (via -lsocket -nsl)' \
1993          '' '-lsocket -lnsl' ||
1994       feat_bail_required SOCKETS
1995 fi
1996
1997 feat_yes SOCKETS &&
1998 run_check setsockopt 'setsockopt(2)' '#define HAVE_SETSOCKOPT' << \!
1999 #include <sys/socket.h>
2000 #include <stdlib.h>
2001 # include <errno.h>
2002 int main(void){
2003    int sockfd = 3;
2004
2005    if(setsockopt(sockfd, SOL_SOCKET, SO_KEEPALIVE, NULL, 0) == -1 &&
2006          errno == ENOSYS)
2007       return 1;
2008    return 0;
2009 }
2010 !
2011
2012 feat_yes SOCKETS && [ -n "${have_setsockopt}" ] &&
2013 link_check so_sndtimeo 'SO_SNDTIMEO' '#define HAVE_SO_SNDTIMEO' << \!
2014 #include <sys/socket.h>
2015 #include <stdlib.h>
2016 int main(void){
2017    struct timeval tv;
2018    int sockfd = 3;
2019
2020    tv.tv_sec = 42;
2021    tv.tv_usec = 21;
2022    setsockopt(sockfd, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof tv);
2023    setsockopt(sockfd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof tv);
2024    return 0;
2025 }
2026 !
2027
2028 feat_yes SOCKETS && [ -n "${have_setsockopt}" ] &&
2029 link_check so_linger 'SO_LINGER' '#define HAVE_SO_LINGER' << \!
2030 #include <sys/socket.h>
2031 #include <stdlib.h>
2032 int main(void){
2033    struct linger li;
2034    int sockfd = 3;
2035
2036    li.l_onoff = 1;
2037    li.l_linger = 42;
2038    setsockopt(sockfd, SOL_SOCKET, SO_LINGER, &li, sizeof li);
2039    return 0;
2040 }
2041 !
2042
2043 if feat_yes SSL; then # {{{
2044    # {{{ LibreSSL decided to define OPENSSL_VERSION_NUMBER with a useless value
2045    # instead of keeping it at the one that corresponds to the OpenSSL at fork
2046    # time: we need to test it first in order to get things right
2047    if compile_check _xssl 'TLS/SSL (LibreSSL)' \
2048       '#define HAVE_SSL
2049       #define HAVE_XSSL
2050       #define HAVE_XSSL_RESSL
2051       #define HAVE_XSSL_OPENSSL 0' << \!
2052 #include <openssl/opensslv.h>
2053 #ifdef LIBRESSL_VERSION_NUMBER
2054 #else
2055 # error nope
2056 #endif
2057 !
2058    then
2059       ossl_v1_1=
2060    # TODO OPENSSL_IS_BORINGSSL, but never tried that one!
2061    elif compile_check _xssl 'TLS/SSL (OpenSSL >= v1.1.0)' \
2062       '#define HAVE_SSL
2063       #define HAVE_XSSL
2064       #define HAVE_XSSL_OPENSSL 0x10100' << \!
2065 #include <openssl/opensslv.h>
2066 #if OPENSSL_VERSION_NUMBER + 0 >= 0x10100000L
2067 #else
2068 # error nope
2069 #endif
2070 !
2071    then
2072       ossl_v1_1=1
2073    elif compile_check _xssl 'TLS/SSL (OpenSSL)' \
2074       '#define HAVE_SSL
2075       #define HAVE_XSSL
2076       #define HAVE_XSSL_OPENSSL 0x10000' << \!
2077 #include <openssl/opensslv.h>
2078 #ifdef OPENSSL_VERSION_NUMBER
2079 #else
2080 # error nope
2081 #endif
2082 !
2083    then
2084       ossl_v1_1=
2085    else
2086       feat_bail_required SSL
2087    fi # }}}
2088
2089    if feat_yes SSL; then # {{{
2090       if [ -n "${ossl_v1_1}" ]; then
2091          without_check yes xssl 'TLS/SSL (new style *_client_method(3ssl))' \
2092             '#define n_XSSL_CLIENT_METHOD TLS_client_method' \
2093             '-lssl -lcrypto'
2094       elif link_check xssl 'TLS/SSL (new style *_client_method(3ssl))' \
2095             '#define n_XSSL_CLIENT_METHOD TLS_client_method' \
2096             '-lssl -lcrypto' << \!
2097 #include <openssl/ssl.h>
2098 #include <openssl/err.h>
2099 #include <openssl/x509v3.h>
2100 #include <openssl/x509.h>
2101 #include <openssl/rand.h>
2102 #ifdef OPENSSL_NO_TLS1 /* TODO only deduced from OPENSSL_NO_SSL[23]! */
2103 # error We need TLSv1.
2104 #endif
2105 int main(void){
2106    SSL_CTX *ctx = SSL_CTX_new(TLS_client_method());
2107
2108    SSL_CTX_free(ctx);
2109    PEM_read_PrivateKey(0, 0, 0, 0);
2110    return 0;
2111 }
2112 !
2113       then
2114          :
2115       elif link_check xssl 'TLS/SSL (old style *_client_method(3ssl))' \
2116             '#define n_XSSL_CLIENT_METHOD SSLv23_client_method' \
2117             '-lssl -lcrypto' << \!
2118 #include <openssl/ssl.h>
2119 #include <openssl/err.h>
2120 #include <openssl/x509v3.h>
2121 #include <openssl/x509.h>
2122 #include <openssl/rand.h>
2123 #if defined OPENSSL_NO_SSL3 &&\
2124       defined OPENSSL_NO_TLS1 /* TODO only deduced from OPENSSL_NO_SSL[23]! */
2125 # error We need one of SSLv3 and TLSv1.
2126 #endif
2127 int main(void){
2128    SSL_CTX *ctx = SSL_CTX_new(SSLv23_client_method());
2129
2130    SSL_CTX_free(ctx);
2131    PEM_read_PrivateKey(0, 0, 0, 0);
2132    return 0;
2133 }
2134 !
2135       then
2136          :
2137       else
2138          feat_bail_required SSL
2139       fi
2140    fi # }}}
2141
2142    if feat_yes SSL; then # {{{
2143       if [ -n "${ossl_v1_1}" ]; then
2144          without_check yes xssl_stack_of 'TLS/SSL STACK_OF()' \
2145             '#define HAVE_XSSL_STACK_OF'
2146       elif compile_check xssl_stack_of 'TLS/SSL STACK_OF()' \
2147             '#define HAVE_XSSL_STACK_OF' << \!
2148 #include <stdio.h> /* For C89 NULL */
2149 #include <openssl/ssl.h>
2150 #include <openssl/err.h>
2151 #include <openssl/x509v3.h>
2152 #include <openssl/x509.h>
2153 #include <openssl/rand.h>
2154 int main(void){
2155    STACK_OF(GENERAL_NAME) *gens = NULL;
2156
2157    printf("%p", gens); /* to use it */
2158    return 0;
2159 }
2160 !
2161       then
2162          :
2163       fi
2164
2165       if [ -n "${ossl_v1_1}" ]; then
2166          without_check yes xssl_conf 'TLS/SSL OpenSSL_modules_load_file()' \
2167             '#define HAVE_XSSL_CONFIG'
2168       elif link_check xssl_conf 'TLS/SSL OpenSSL_modules_load_file() support' \
2169             '#define HAVE_XSSL_CONFIG' << \!
2170 #include <stdio.h> /* For C89 NULL */
2171 #include <openssl/conf.h>
2172 int main(void){
2173    CONF_modules_load_file(NULL, NULL, CONF_MFLAGS_IGNORE_MISSING_FILE);
2174    CONF_modules_free();
2175    return 0;
2176 }
2177 !
2178       then
2179          :
2180       fi
2181
2182       if [ -n "${ossl_v1_1}" ]; then
2183          without_check yes xssl_conf_ctx 'TLS/SSL SSL_CONF_CTX support' \
2184             '#define HAVE_XSSL_CONF_CTX'
2185       elif link_check xssl_conf_ctx 'TLS/SSL SSL_CONF_CTX support' \
2186          '#define HAVE_XSSL_CONF_CTX' << \!
2187 #include "config.h"
2188 #include <openssl/ssl.h>
2189 #include <openssl/err.h>
2190 int main(void){
2191    SSL_CTX *ctx = SSL_CTX_new(n_XSSL_CLIENT_METHOD());
2192    SSL_CONF_CTX *cctx = SSL_CONF_CTX_new();
2193
2194    SSL_CONF_CTX_set_flags(cctx,
2195       SSL_CONF_FLAG_FILE | SSL_CONF_FLAG_CLIENT |
2196       SSL_CONF_FLAG_CERTIFICATE | SSL_CONF_FLAG_SHOW_ERRORS);
2197    SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
2198    SSL_CONF_cmd(cctx, "Protocol", "ALL");
2199    SSL_CONF_CTX_finish(cctx);
2200    SSL_CONF_CTX_free(cctx);
2201    SSL_CTX_free(ctx);
2202    return 0;
2203 }
2204 !
2205       then
2206          :
2207       fi
2208
2209       if [ -n "${ossl_v1_1}" ]; then
2210          without_check no xssl_rand_egd 'TLS/SSL RAND_egd(3ssl)' \
2211             '#define HAVE_XSSL_RAND_EGD'
2212       elif link_check xssl_rand_egd 'TLS/SSL RAND_egd(3ssl)' \
2213             '#define HAVE_XSSL_RAND_EGD' << \!
2214 #include <openssl/rand.h>
2215 int main(void){
2216    return RAND_egd("some.where") > 0;
2217 }
2218 !
2219       then
2220          :
2221       fi
2222
2223       if feat_yes SSL_ALL_ALGORITHMS; then
2224          if [ -n "${ossl_v1_1}" ]; then
2225             without_check yes ssl_all_algo 'TLS/SSL all-algorithms support' \
2226                '#define HAVE_SSL_ALL_ALGORITHMS'
2227          elif link_check ssl_all_algo 'TLS/SSL all-algorithms support' \
2228             '#define HAVE_SSL_ALL_ALGORITHMS' << \!
2229 #include <openssl/evp.h>
2230 int main(void){
2231    OpenSSL_add_all_algorithms();
2232    EVP_get_cipherbyname("two cents i never exist");
2233    EVP_cleanup();
2234    return 0;
2235 }
2236 !
2237          then
2238             :
2239          else
2240             feat_bail_required SSL_ALL_ALGORITHMS
2241          fi
2242       fi
2243    fi # feat_yes SSL }}}
2244
2245    if feat_yes SSL && feat_yes MD5 && feat_no NOEXTMD5; then # {{{
2246       run_check ssl_md5 'MD5 digest in the used crypto library' \
2247             '#define HAVE_XSSL_MD5' << \!
2248 #include <stdlib.h>
2249 #include <string.h>
2250 #include <openssl/md5.h>
2251 int main(void){
2252    char const dat[] = "abrakadabrafidibus";
2253    char dig[16], hex[16 * 2];
2254    MD5_CTX ctx;
2255    size_t i, j;
2256
2257    memset(dig, 0, sizeof(dig));
2258    memset(hex, 0, sizeof(hex));
2259    MD5_Init(&ctx);
2260    MD5_Update(&ctx, dat, sizeof(dat) - 1);
2261    MD5_Final(dig, &ctx);
2262
2263 #define hexchar(n) ((n) > 9 ? (n) - 10 + 'a' : (n) + '0')
2264    for(i = 0; i < sizeof(hex) / 2; i++){
2265       j = i << 1;
2266       hex[j] = hexchar((dig[i] & 0xf0) >> 4);
2267       hex[++j] = hexchar(dig[i] & 0x0f);
2268    }
2269    return !!memcmp("6d7d0a3d949da2e96f2aa010f65d8326", hex, sizeof(hex));
2270 }
2271 !
2272    fi # }}}
2273 else
2274    echo '/* OPT_SSL=0 */' >> ${h}
2275 fi # }}} feat_yes SSL
2276
2277 if [ "${have_xssl}" = yes ]; then
2278    OPT_SMIME=1
2279 else
2280    OPT_SMIME=0
2281 fi
2282
2283 if feat_yes SMTP; then
2284    echo '#define HAVE_SMTP' >> ${h}
2285 else
2286    echo '/* OPT_SMTP=0 */' >> ${h}
2287 fi
2288
2289 if feat_yes POP3; then
2290    echo '#define HAVE_POP3' >> ${h}
2291 else
2292    echo '/* OPT_POP3=0 */' >> ${h}
2293 fi
2294
2295 if feat_yes GSSAPI; then
2296    ${cat} > ${tmp2}.c << \!
2297 #include <gssapi/gssapi.h>
2298 int main(void){
2299    gss_import_name(0, 0, GSS_C_NT_HOSTBASED_SERVICE, 0);
2300    gss_init_sec_context(0,0,0,0,0,0,0,0,0,0,0,0,0);
2301    return 0;
2302 }
2303 !
2304    ${sed} -e '1s/gssapi\///' < ${tmp2}.c > ${tmp3}.c
2305
2306    if command -v krb5-config >/dev/null 2>&1; then
2307       i=`command -v krb5-config`
2308       GSS_LIBS="`CFLAGS= ${i} --libs gssapi`"
2309       GSS_INCS="`CFLAGS= ${i} --cflags`"
2310       i='GSS-API via krb5-config(1)'
2311    else
2312       GSS_LIBS='-lgssapi'
2313       GSS_INCS=
2314       i='GSS-API in gssapi/gssapi.h, libgssapi'
2315    fi
2316    if < ${tmp2}.c link_check gss \
2317          "${i}" '#define HAVE_GSSAPI' "${GSS_LIBS}" "${GSS_INCS}" ||\
2318       < ${tmp3}.c link_check gss \
2319          'GSS-API in gssapi.h, libgssapi' \
2320          '#define HAVE_GSSAPI
2321          #define GSSAPI_REG_INCLUDE' \
2322          '-lgssapi' ||\
2323       < ${tmp2}.c link_check gss 'GSS-API in libgssapi_krb5' \
2324          '#define HAVE_GSSAPI' \
2325          '-lgssapi_krb5' ||\
2326       < ${tmp3}.c link_check gss \
2327          'GSS-API in libgssapi, OpenBSD-style (pre 5.3)' \
2328          '#define HAVE_GSSAPI
2329          #define GSS_REG_INCLUDE' \
2330          '-lgssapi -lkrb5 -lcrypto' \
2331          '-I/usr/include/kerberosV' ||\
2332       < ${tmp2}.c link_check gss 'GSS-API in libgss' \
2333          '#define HAVE_GSSAPI' \
2334          '-lgss' ||\
2335       link_check gss 'GSS-API in libgssapi_krb5, old-style' \
2336          '#define HAVE_GSSAPI
2337          #define GSSAPI_OLD_STYLE' \
2338          '-lgssapi_krb5' << \!
2339 #include <gssapi/gssapi.h>
2340 #include <gssapi/gssapi_generic.h>
2341 int main(void){
2342    gss_import_name(0, 0, gss_nt_service_name, 0);
2343    gss_init_sec_context(0,0,0,0,0,0,0,0,0,0,0,0,0);
2344    return 0;
2345 }
2346 !
2347    then
2348       :
2349    else
2350       feat_bail_required GSSAPI
2351    fi
2352 else
2353    echo '/* OPT_GSSAPI=0 */' >> ${h}
2354 fi # feat_yes GSSAPI
2355
2356 if feat_yes NETRC; then
2357    echo '#define HAVE_NETRC' >> ${h}
2358 else
2359    echo '/* OPT_NETRC=0 */' >> ${h}
2360 fi
2361
2362 if feat_yes AGENT; then
2363    echo '#define HAVE_AGENT' >> ${h}
2364 else
2365    echo '/* OPT_AGENT=0 */' >> ${h}
2366 fi
2367
2368 if feat_yes IDNA; then
2369    if link_check idna 'GNU Libidn' '#define HAVE_IDNA HAVE_IDNA_LIBIDNA' \
2370          '-lidn' << \!
2371 #include <idna.h>
2372 #include <idn-free.h>
2373 #include <stringprep.h>
2374 int main(void){
2375    char *utf8, *idna_ascii, *idna_utf8;
2376
2377    utf8 = stringprep_locale_to_utf8("does.this.work");
2378    if (idna_to_ascii_8z(utf8, &idna_ascii, IDNA_USE_STD3_ASCII_RULES)
2379          != IDNA_SUCCESS)
2380       return 1;
2381    idn_free(idna_ascii);
2382    /* (Rather link check only here) */
2383    idna_utf8 = stringprep_convert(idna_ascii, "UTF-8", "de_DE");
2384    return 0;
2385 }
2386 !
2387    then
2388       :
2389    elif link_check idna 'idnkit' '#define HAVE_IDNA HAVE_IDNA_IDNKIT' \
2390          '-lidnkit' << \!
2391 #include <stdio.h>
2392 #include <idn/api.h>
2393 #include <idn/result.h>
2394 int main(void){
2395    idn_result_t r;
2396    char ace_name[256];
2397    char local_name[256];
2398
2399    r = idn_encodename(IDN_ENCODE_APP, "does.this.work", ace_name,
2400          sizeof(ace_name));
2401    if (r != idn_success) {
2402       fprintf(stderr, "idn_encodename failed: %s\n", idn_result_tostring(r));
2403       return 1;
2404    }
2405    r = idn_decodename(IDN_DECODE_APP, ace_name, local_name, sizeof(local_name));
2406    if (r != idn_success) {
2407       fprintf(stderr, "idn_decodename failed: %s\n", idn_result_tostring(r));
2408       return 1;
2409    }
2410    return 0;
2411 }
2412 !
2413    then
2414       :
2415    else
2416       feat_bail_required IDNA
2417    fi
2418
2419    if [ -n "${have_idna}" ]; then
2420       echo '#define HAVE_IDNA_LIBIDNA 0' >> ${h}
2421       echo '#define HAVE_IDNA_IDNKIT 1' >> ${h}
2422    fi
2423 else
2424    echo '/* OPT_IDNA=0 */' >> ${h}
2425 fi
2426
2427 if feat_yes IMAP_SEARCH; then
2428    echo '#define HAVE_IMAP_SEARCH' >> ${h}
2429 else
2430    echo '/* OPT_IMAP_SEARCH=0 */' >> ${h}
2431 fi
2432
2433 if feat_yes REGEX; then
2434    if link_check regex 'regular expressions' '#define HAVE_REGEX' << \!
2435 #include <regex.h>
2436 #include <stdlib.h>
2437 int main(void){
2438    size_t xret;
2439    int status;
2440    regex_t re;
2441
2442    status = regcomp(&re, ".*bsd", REG_EXTENDED | REG_ICASE | REG_NOSUB);
2443    xret = regerror(status, &re, NULL, 0);
2444    status = regexec(&re, "plan9", 0,NULL, 0);
2445    regfree(&re);
2446    return !(status == REG_NOMATCH);
2447 }
2448 !
2449    then
2450       :
2451    else
2452       feat_bail_required REGEX
2453    fi
2454 else
2455    echo '/* OPT_REGEX=0 */' >> ${h}
2456 fi
2457
2458 if feat_yes MLE && [ -n "${have_c90amend1}" ]; then
2459    have_mle=1
2460    echo '#define HAVE_MLE' >> ${h}
2461 else
2462    feat_bail_required MLE
2463    echo '/* OPT_MLE=0 */' >> ${h}
2464 fi
2465
2466 # Generic have-a-line-editor switch for those who need it below
2467 if [ -n "${have_mle}" ]; then
2468    have_cle=1
2469 fi
2470
2471 if [ -n "${have_cle}" ] && feat_yes HISTORY; then
2472    echo '#define HAVE_HISTORY' >> ${h}
2473 else
2474    echo '/* OPT_HISTORY=0 */' >> ${h}
2475 fi
2476
2477 if [ -n "${have_mle}" ] && feat_yes KEY_BINDINGS; then
2478    echo '#define HAVE_KEY_BINDINGS' >> ${h}
2479 else
2480    echo '/* OPT_KEY_BINDINGS=0 */' >> ${h}
2481 fi
2482
2483 if feat_yes TERMCAP; then
2484    __termcaplib() {
2485       link_check termcap "termcap(5) (via ${4})" \
2486          "#define HAVE_TERMCAP${3}" "${1}" << _EOT
2487 #include <stdio.h>
2488 #include <stdlib.h>
2489 ${2}
2490 #include <term.h>
2491 #define UNCONST(P) ((void*)(unsigned long)(void const*)(P))
2492 static int my_putc(int c){return putchar(c);}
2493 int main(void){
2494    char buf[1024+512], cmdbuf[2048], *cpb, *r1;
2495    int r2 = OK, r3 = ERR;
2496
2497    tgetent(buf, getenv("TERM"));
2498    cpb = cmdbuf;
2499    r1 = tgetstr(UNCONST("cm"), &cpb);
2500    tgoto(r1, 1, 1);
2501    r2 = tgetnum(UNCONST("Co"));
2502    r3 = tgetflag(UNCONST("ut"));
2503    tputs("cr", 1, &my_putc);
2504    return (r1 == NULL || r2 == -1 || r3 == 0);
2505 }
2506 _EOT
2507    }
2508
2509    __terminfolib() {
2510       link_check terminfo "terminfo(5) (via ${2})" \
2511          '#define HAVE_TERMCAP
2512          #define HAVE_TERMCAP_CURSES
2513          #define HAVE_TERMINFO' "${1}" << _EOT
2514 #include <stdio.h>
2515 #include <curses.h>
2516 #include <term.h>
2517 #define UNCONST(P) ((void*)(unsigned long)(void const*)(P))
2518 static int my_putc(int c){return putchar(c);}
2519 int main(void){
2520    int er, r0, r1, r2;
2521    char *r3, *tp;
2522
2523    er = OK;
2524    r0 = setupterm(NULL, 1, &er);
2525    r1 = tigetflag(UNCONST("bce"));
2526    r2 = tigetnum(UNCONST("colors"));
2527    r3 = tigetstr(UNCONST("cr"));
2528    tp = tparm(r3, NULL, NULL, 0,0,0,0,0,0,0);
2529    tputs(tp, 1, &my_putc);
2530    return (r0 == ERR || r1 == -1 || r2 == -2 || r2 == -1 ||
2531       r3 == (char*)-1 || r3 == NULL);
2532 }
2533 _EOT
2534    }
2535
2536    if feat_yes TERMCAP_VIA_TERMINFO; then
2537       __terminfolib -ltinfo -ltinfo ||
2538          __terminfolib -lcurses -lcurses ||
2539          __terminfolib -lcursesw -lcursesw ||
2540          feat_bail_required TERMCAP_VIA_TERMINFO
2541    fi
2542
2543    if [ -z "${have_terminfo}" ]; then
2544       __termcaplib -ltermcap '' '' '-ltermcap' ||
2545          __termcaplib -ltermcap '#include <curses.h>' '
2546             #define HAVE_TERMCAP_CURSES' \
2547             'curses.h / -ltermcap' ||
2548          __termcaplib -lcurses '#include <curses.h>' '
2549             #define HAVE_TERMCAP_CURSES' \
2550             'curses.h / -lcurses' ||
2551          __termcaplib -lcursesw '#include <curses.h>' '
2552             #define HAVE_TERMCAP_CURSES' \
2553             'curses.h / -lcursesw' ||
2554          feat_bail_required TERMCAP
2555
2556       if [ -n "${have_termcap}" ]; then
2557          run_check tgetent_null \
2558             "tgetent(3) of termcap(5) takes NULL buffer" \
2559             "#define HAVE_TGETENT_NULL_BUF" << _EOT
2560 #include <stdio.h> /* For C89 NULL */
2561 #include <stdlib.h>
2562 #ifdef HAVE_TERMCAP_CURSES
2563 # include <curses.h>
2564 #endif
2565 #include <term.h>
2566 int main(void){
2567    tgetent(NULL, getenv("TERM"));
2568    return 0;
2569 }
2570 _EOT
2571       fi
2572    fi
2573 else
2574    echo '/* OPT_TERMCAP=0 */' >> ${h}
2575    echo '/* OPT_TERMCAP_VIA_TERMINFO=0 */' >> ${h}
2576 fi
2577
2578 if feat_yes SPAM_SPAMC; then
2579    echo '#define HAVE_SPAM_SPAMC' >> ${h}
2580    if command -v spamc >/dev/null 2>&1; then
2581       echo "#define SPAM_SPAMC_PATH \"`command -v spamc`\"" >> ${h}
2582    fi
2583 else
2584    echo '/* OPT_SPAM_SPAMC=0 */' >> ${h}
2585 fi
2586
2587 if feat_yes SPAM_SPAMD && [ -n "${have_af_unix}" ]; then
2588    echo '#define HAVE_SPAM_SPAMD' >> ${h}
2589 else
2590    feat_bail_required SPAM_SPAMD
2591    echo '/* OPT_SPAM_SPAMD=0 */' >> ${h}
2592 fi
2593
2594 feat_def SPAM_FILTER
2595
2596 if feat_yes SPAM_SPAMC || feat_yes SPAM_SPAMD || feat_yes SPAM_FILTER; then
2597    echo '#define HAVE_SPAM' >> ${h}
2598 else
2599    echo '/* HAVE_SPAM */' >> ${h}
2600 fi
2601
2602 if feat_yes QUOTE_FOLD &&\
2603       [ -n "${have_c90amend1}" ] && [ -n "${have_wcwidth}" ]; then
2604    echo '#define HAVE_QUOTE_FOLD' >> ${h}
2605 else
2606    feat_bail_required QUOTE_FOLD
2607    echo '/* OPT_QUOTE_FOLD=0 */' >> ${h}
2608 fi
2609
2610 feat_def FILTER_HTML_TAGSOUP
2611 feat_def COLOUR
2612 feat_def DOTLOCK
2613 feat_def MD5
2614 feat_def NOMEMDBG
2615
2616 ## Summarizing
2617
2618 ${rm} -f ${tmp}
2619 squeeze_em ${inc} ${tmp}
2620 ${mv} ${tmp} ${inc}
2621 squeeze_em ${lib} ${tmp}
2622 ${mv} ${tmp} ${lib}
2623
2624 # config.h
2625 ${mv} ${h} ${tmp}
2626 printf '#ifndef n_CONFIG_H\n# define n_CONFIG_H 1\n' > ${h}
2627 ${cat} ${tmp} >> ${h}
2628 ${rm} -f ${tmp}
2629 printf '\n' >> ${h}
2630
2631 # Create the real mk.mk
2632 # Note we cannout use explicit ./ filename prefix for source and object
2633 # pathnames because of a bug in bmake(1)
2634 ${rm} -rf ${tmp0}.* ${tmp0}*
2635 printf 'OBJ_SRC = ' >> ${mk}
2636 if feat_no AMALGAMATION; then
2637    for i in `printf '%s\n' *.c | ${sort}`; do
2638       if [ "${i}" = privsep.c ]; then
2639          continue
2640       fi
2641       printf "${i} " >> ${mk}
2642    done
2643    printf '\nAMALGAM_TARGET =\nAMALGAM_DEP =\n' >> ${mk}
2644 else
2645    printf 'main.c\nAMALGAM_TARGET = main.o\nAMALGAM_DEP = ' >> ${mk}
2646
2647    printf '\n/* HAVE_AMALGAMATION: include sources */\n' >> ${h}
2648    printf '#elif _CONFIG_H + 0 == 1\n' >> ${h}
2649    printf '# undef _CONFIG_H\n' >> ${h}
2650    printf '# define _CONFIG_H 2\n' >> ${h}
2651    for i in `printf '%s\n' *.c | ${sort}`; do
2652       if [ "${i}" = "${j}" ] || [ "${i}" = main.c ] || \
2653             [ "${i}" = privsep.c ]; then
2654          continue
2655       fi
2656       printf "${i} " >> ${mk}
2657       printf "# include \"${i}\"\n" >> ${h}
2658    done
2659    echo >> ${mk}
2660    # tcc(1) fails on 2015-11-13 unless this #else clause existed
2661    echo '#else' >> ${h}
2662 fi
2663
2664 # Finally, create the string that is used by *features* and `version'.
2665 # Take this nice opportunity and generate a visual listing of included and
2666 # non-included features for the person who runs the configuration
2667 msg '\nThe following features are included (+) or not (-):'
2668 set -- ${OPTIONS_DETECT} ${OPTIONS} ${OPTIONS_XTRA}
2669 printf '/* The "feature string" */\n' >> ${h}
2670 # Because + is expanded by *folder* if first in "echo $features", put something
2671 printf '#define VAL_FEATURES_CNT '${#}'\n#define VAL_FEATURES "#' >> ${h}
2672 sep=
2673 for opt
2674 do
2675    sdoc=`option_doc_of ${opt}`
2676    [ -z "${sdoc}" ] && continue
2677    sopt="`echo ${opt} | ${tr} '[A-Z]_' '[a-z]-'`"
2678    feat_yes ${opt} && sign=+ || sign=-
2679    printf -- "${sep}${sign}${sopt}" >> ${h}
2680    sep=','
2681    msg " %s %s: %s" ${sign} ${sopt} "${sdoc}"
2682 done
2683 # TODO instead of using sh+tr+awk+printf, use awk, drop option_doc_of, inc here
2684 #exec 5>&1 >>${h}
2685 #${awk} -v opts="${OPTIONS_DETECT} ${OPTIONS} ${OPTIONS_XTRA}" \
2686 #   -v xopts="${XOPTIONS_DETECT} ${XOPTIONS} ${XOPTIONS_XTRA}" \
2687 #
2688 printf '"\n#endif /* n_CONFIG_H */\n' >> ${h}
2689
2690 echo "LIBS = `${cat} ${lib}`" >> ${mk}
2691 echo "INCS = `${cat} ${inc}`" >> ${mk}
2692 echo >> ${mk}
2693 ${cat} ./mk-mk.in >> ${mk}
2694
2695 ## Finished!
2696
2697 msg '\nSetup:'
2698 msg ' . System-wide resource file: %s/%s' "${VAL_SYSCONFDIR}" "${VAL_SYSCONFRC}"
2699 msg ' . bindir: %s' "${VAL_BINDIR}"
2700 if feat_yes DOTLOCK; then
2701    msg ' . libexecdir: %s' "${VAL_LIBEXECDIR}"
2702 fi
2703 msg ' . mandir: %s' "${VAL_MANDIR}"
2704 msg ' . M(ail)T(ransfer)A(gent): %s (argv0 %s)' "${VAL_MTA}" "${VAL_MTA_ARGV0}"
2705 msg ' . $MAIL spool directory: %s' "${VAL_MAIL}"
2706 msg ''
2707
2708 if [ -n "${have_fnmatch}" ] && [ -n "${have_fchdir}" ]; then
2709    exit 0
2710 fi
2711 msg 'Remarks:'
2712 if [ -z "${have_fnmatch}" ]; then
2713    msg ' . The function fnmatch(3) could not be found.'
2714    msg '   Filename patterns like wildcard are not supported on your system'
2715 fi
2716 if [ -z "${have_fchdir}" ]; then
2717    msg ' . The function fchdir(2) could not be found.'
2718    msg '   We will use chdir(2) instead.'
2719    msg '   This is a problem only if the current working directory is changed'
2720    msg '   while this program is inside of it'
2721 fi
2722 msg ''
2723
2724 # s-it-mode