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 option_reset() {
   8    WANT_ICONV=0
   9    WANT_SOCKETS=0
  10       WANT_SSL=0 WANT_ALL_SSL_ALGORITHMS=0
  11       WANT_SMTP=0 WANT_POP3=0
  12       WANT_GSSAPI=0 WANT_NETRC=0 WANT_AGENT=0
  13       #WANT_MD5=0
  14    WANT_IDNA=0
  15    WANT_IMAP_SEARCH=0
  16    WANT_REGEX=0
  17    WANT_READLINE=0 WANT_MLE=0
  18       WANT_HISTORY=0 WANT_KEY_BINDINGS=0
  19    WANT_TERMCAP=0 WANT_TERMCAP_PREFER_TERMINFO=0
  20    WANT_ERRORS=0
  21    WANT_SPAM_SPAMC=0 WANT_SPAM_SPAMD=0 WANT_SPAM_FILTER=0
  22    WANT_DOCSTRINGS=0
  23    WANT_QUOTE_FOLD=0
  24    WANT_FILTER_HTML_TAGSOUP=0
  25    WANT_COLOUR=0
  26    WANT_DOTLOCK=0
  27 }
  28
  29 option_maximal() {
  30    WANT_ICONV=require
  31    WANT_SOCKETS=1
  32       WANT_SSL=1 WANT_ALL_SSL_ALGORITHMS=1
  33       WANT_SMTP=1 WANT_POP3=1
  34       WANT_GSSAPI=1 WANT_NETRC=1 WANT_AGENT=1
  35       #WANT_MD5=1
  36    WANT_IDNA=1
  37    WANT_IMAP_SEARCH=1
  38    WANT_REGEX=require
  39    WANT_MLE=1
  40       WANT_HISTORY=1 WANT_KEY_BINDINGS=1
  41    WANT_TERMCAP=1 WANT_TERMCAP_PREFER_TERMINFO=1
  42    WANT_ERRORS=1
  43    WANT_SPAM_SPAMC=1 WANT_SPAM_SPAMD=1 WANT_SPAM_FILTER=1
  44    WANT_DOCSTRINGS=1
  45    WANT_QUOTE_FOLD=1
  46    WANT_FILTER_HTML_TAGSOUP=1
  47    WANT_COLOUR=1
  48    WANT_DOTLOCK=require
  49 }
  50
  51 # Predefined CONFIG= urations take precedence over anything else
  52 if [ -n "${CONFIG}" ]; then
  53    case "${CONFIG}" in
  54    [nN][uU][lL][lL])
  55       option_reset
  56       ;;
  57    [nN][uU][lL][lL][iI])
  58       option_reset
  59       WANT_ICONV=require
  60       ;;
  61    [mM][iI][nN][iI][mM][aA][lL])
  62       option_reset
  63       WANT_ICONV=1
  64       WANT_REGEX=1
  65       WANT_DOTLOCK=require
  66       ;;
  67    [mM][eE][dD][iI][uU][mM])
  68       option_reset
  69       WANT_ICONV=require
  70       WANT_IDNA=1
  71       WANT_REGEX=1
  72       WANT_MLE=1
  73          WANT_HISTORY=1 WANT_KEY_BINDINGS=1
  74       WANT_ERRORS=1
  75       WANT_SPAM_FILTER=1
  76       WANT_DOCSTRINGS=1
  77       WANT_COLOUR=1
  78       WANT_DOTLOCK=require
  79       ;;
  80    [nN][eE][tT][sS][eE][nN][dD])
  81       option_reset
  82       WANT_ICONV=require
  83       WANT_SOCKETS=1
  84          WANT_SSL=require
  85          WANT_SMTP=require
  86          WANT_GSSAPI=1 WANT_NETRC=1 WANT_AGENT=1
  87       WANT_IDNA=1
  88       WANT_REGEX=1
  89       WANT_MLE=1
  90          WANT_HISTORY=1 WANT_KEY_BINDINGS=1
  91       WANT_DOCSTRINGS=1
  92       WANT_COLOUR=1
  93       WANT_DOTLOCK=require
  94       ;;
  95    [mM][aA][xX][iI][mM][aA][lL])
  96       option_reset
  97       option_maximal
  98       ;;
  99    [dD][eE][vV][eE][lL])
 100       WANT_DEVEL=1 WANT_DEBUG=1 WANT_NYD2=1
 101       option_maximal
 102       ;;
 103    [oO][dD][eE][vV][eE][lL])
 104       WANT_DEVEL=1
 105       option_maximal
 106       ;;
 107    *)
 108       echo >&2 "Unknown CONFIG= setting: ${CONFIG}"
 109       echo >&2 'Possible values: NULL, NULLI, MINIMAL, MEDIUM, NETSEND, MAXIMAL'
 110       exit 1
 111       ;;
 112    esac
 113 fi
 114
 115 # Inter-relationships
 116 option_update() {
 117    if feat_no SMTP && feat_no POP3; then
 118       WANT_SOCKETS=0
 119    fi
 120    if feat_no SOCKETS; then
 121       if feat_require SMTP; then
 122          msg 'ERROR: need SOCKETS for required feature SMTP'
 123          config_exit 13
 124       fi
 125       if feat_require POP3; then
 126          msg 'ERROR: need SOCKETS for required feature POP3'
 127          config_exit 13
 128       fi
 129       WANT_SSL=0 WANT_ALL_SSL_ALGORITHMS=0
 130       WANT_SMTP=0 WANT_POP3=0
 131       WANT_GSSAPI=0 WANT_NETRC=0 WANT_AGENT=0
 132    fi
 133    if feat_no SMTP; then
 134       WANT_GSSAPI=0
 135    fi
 136
 137    if feat_no READLINE && feat_no MLE; then
 138       WANT_HISTORY=0 WANT_KEY_BINDINGS=0
 139    fi
 140
 141    # If we don't need MD5 leave it alone
 142    if feat_no SOCKETS; then
 143       WANT_MD5=0
 144    fi
 145
 146    if feat_yes DEVEL; then
 147       WANT_DEBUG=1
 148    fi
 149    if feat_yes DEBUG; then
 150       WANT_NOALLOCA=1 WANT_DEVEL=1
 151    fi
 152 }
 153
 154 # Note that potential duplicates in PATH, C_INCLUDE_PATH etc. will be cleaned
 155 # via path_check() later on once possible
 156
 157 # TODO cc_maxopt is brute simple, we should compile test program and dig real
 158 # compiler versions for known compilers, then be more specific
 159 cc_maxopt=100
 160 _CFLAGS= _LDFLAGS=
 161
 162 os_early_setup() {
 163    i="${OS:-`uname -s`}"
 164
 165    if [ ${i} = SunOS ]; then
 166       msg 'SunOS / Solaris?  Applying some "early setup" rules ...'
 167       _os_early_setup_sunos
 168    fi
 169 }
 170
 171 os_setup() {
 172    # OSFULLSPEC is used to recognize changes (i.e., machine type, updates etc.)
 173    OSFULLSPEC="${OS:-`uname -a | ${tr} '[A-Z]' '[a-z]'`}"
 174    OS="${OS:-`uname -s | ${tr} '[A-Z]' '[a-z]'`}"
 175    msg 'Operating system is "%s"' ${OS}
 176
 177    if [ ${OS} = sunos ]; then
 178       msg ' . have special SunOS / Solaris "setup" rules ...'
 179       _os_setup_sunos
 180    elif [ ${OS} = unixware ]; then
 181       msg ' . have special UnixWare environmental rules ...'
 182       if feat_yes AUTOCC && command -v cc >/dev/null 2>&1; then
 183          CC=cc
 184          feat_yes DEBUG && _CFLAGS='-v -Xa -g' || _CFLAGS='-Xa -O'
 185
 186          CFLAGS="${_CFLAGS} ${EXTRA_CFLAGS}"
 187          LDFLAGS="${_LDFLAGS} ${EXTRA_LDFLAGS}"
 188          export CC CFLAGS LDFLAGS
 189          WANT_AUTOCC=0 had_want_autocc=1 need_R_ldflags=-R
 190       fi
 191    elif [ -n "${VERBOSE}" ]; then
 192       msg ' . no special treatment for this system necessary or known'
 193    fi
 194
 195    # Sledgehammer: better set _GNU_SOURCE
 196    # And in general: oh, boy!
 197    OS_DEFINES="${OS_DEFINES}#define _GNU_SOURCE\n"
 198    #OS_DEFINES="${OS_DEFINES}#define _POSIX_C_SOURCE 200809L\n"
 199    #OS_DEFINES="${OS_DEFINES}#define _XOPEN_SOURCE 700\n"
 200    #[ ${OS} = darwin ] && OS_DEFINES="${OS_DEFINES}#define _DARWIN_C_SOURCE\n"
 201
 202    # On pkgsrc(7) systems automatically add /usr/pkg/*
 203    if [ -d /usr/pkg ]; then
 204       C_INCLUDE_PATH="${C_INCLUDE_PATH}:/usr/pkg/include"
 205       LD_LIBRARY_PATH="${LD_LIBRARY_PATH}:/usr/pkg/lib"
 206    fi
 207 }
 208
 209 _os_early_setup_sunos() {
 210    # According to standards(5), this is what we need to do
 211    if [ -d /usr/xpg4 ]; then :; else
 212       msg 'ERROR: On SunOS / Solaris we need /usr/xpg4 environment!  Sorry.'
 213       config_exit 1
 214    fi
 215    PATH="/usr/xpg4/bin:/usr/ccs/bin:/usr/bin:${PATH}"
 216    [ -d /usr/xpg6 ] && PATH="/usr/xpg6/bin:${PATH}"
 217    export PATH
 218 }
 219
 220 _os_setup_sunos() {
 221    C_INCLUDE_PATH="/usr/xpg4/include:${C_INCLUDE_PATH}"
 222    LD_LIBRARY_PATH="/usr/xpg4/lib:${LD_LIBRARY_PATH}"
 223
 224    # Include packages
 225    if [ -d /opt/csw ]; then
 226       C_INCLUDE_PATH="${C_INCLUDE_PATH}:/opt/csw/include"
 227       LD_LIBRARY_PATH="${LD_LIBRARY_PATH}:/opt/csw/lib"
 228    fi
 229
 230    OS_DEFINES="${OS_DEFINES}#define __EXTENSIONS__\n"
 231    #OS_DEFINES="${OS_DEFINES}#define _POSIX_C_SOURCE 200112L\n"
 232
 233    [ -n "${cksum}" ] || cksum=/opt/csw/gnu/cksum
 234    if [ -x "${cksum}" ]; then :; else
 235       msg 'ERROR: Not an executable program: "%s"' "${cksum}"
 236       msg 'ERROR:   We need a CRC-32 cksum(1), as specified in POSIX.'
 237       msg 'ERROR:   However, we do so only for tests.'
 238       msg 'ERROR:   If that is ok, set "cksum=/usr/bin/true", then rerun'
 239       config_exit 1
 240    fi
 241
 242    if feat_yes AUTOCC; then
 243       if command -v cc >/dev/null 2>&1; then
 244          CC=cc
 245          feat_yes DEBUG && _CFLAGS="-v -Xa -g" || _CFLAGS="-Xa -O"
 246
 247          CFLAGS="${_CFLAGS} ${EXTRA_CFLAGS}"
 248          LDFLAGS="${_LDFLAGS} ${EXTRA_LDFLAGS}"
 249          export CC CFLAGS LDFLAGS
 250          WANT_AUTOCC=0 had_want_autocc=1 need_R_ldflags=-R
 251       else
 252          # Assume gcc(1), which supports -R for compat
 253          cc_maxopt=2 force_no_stackprot=1 need_R_ldflags=-Wl,-R
 254       fi
 255    fi
 256 }
 257
 258 # Check out compiler ($CC) and -flags ($CFLAGS)
 259 cc_setup() {
 260    # Even though it belongs into cc_flags we will try to compile and link
 261    # something, so ensure we have a clean state regarding CFLAGS/LDFLAGS or
 262    # EXTRA_CFLAGS/EXTRA_LDFLAGS
 263    if feat_no AUTOCC; then
 264       _cc_default
 265       # Ensure those don't do any harm
 266       EXTRA_CFLAGS= EXTRA_LDFLAGS=
 267       export EXTRA_CFLAGS EXTRA_LDFLAGS
 268       return
 269    else
 270       CFLAGS= LDFLAGS=
 271       export CFLAGS LDFLAGS
 272    fi
 273
 274    [ -n "${CC}" ] && [ "${CC}" != cc ] && { _cc_default; return; }
 275
 276    printf >&2 'Searching for a usable C compiler .. $CC='
 277    if { i="`command -v clang`"; }; then
 278       CC=${i}
 279    elif { i="`command -v gcc`"; }; then
 280       CC=${i}
 281    elif { i="`command -v c99`"; }; then
 282       CC=${i}
 283    elif { i="`command -v tcc`"; }; then
 284       CC=${i}
 285    elif { i="`command -v pcc`"; }; then
 286       CC=${i}
 287    else
 288       if [ "${CC}" = cc ]; then
 289          :
 290       elif { i="`command -v c89`"; }; then
 291          CC=${i}
 292       else
 293          printf >&2 'boing booom tschak\n'
 294          msg 'ERROR: I cannot find a compiler!'
 295          msg ' Neither of clang(1), gcc(1), tcc(1), pcc(1), c89(1) and c99(1).'
 296          msg ' Please set ${CC} environment variable, maybe ${CFLAGS}, rerun.'
 297          config_exit 1
 298       fi
 299    fi
 300    printf >&2 -- '"%s"\n' "${CC}"
 301    export CC
 302 }
 303
 304 _cc_default() {
 305    if [ -z "${CC}" ]; then
 306       printf >&2 'To go on like you have chosen, please set $CC, rerun.'
 307       config_exit 1
 308    fi
 309
 310    if [ -z "${VERBOSE}" ] && [ -f ${lst} ] && feat_no DEBUG; then
 311       :
 312    else
 313       msg 'Using C compiler ${CC}=%s' "${CC}"
 314    fi
 315 }
 316
 317 cc_flags() {
 318    if feat_yes AUTOCC; then
 319       if [ -f ${lst} ] && feat_no DEBUG && [ -z "${VERBOSE}" ]; then
 320          cc_check_silent=1
 321          msg 'Detecting ${CFLAGS}/${LDFLAGS} for ${CC}="%s", just a second..' \
 322             "${CC}"
 323       else
 324          cc_check_silent=
 325          msg 'Testing usable ${CFLAGS}/${LDFLAGS} for ${CC}=%s' "${CC}"
 326       fi
 327
 328       i=`echo "${CC}" | ${awk} 'BEGIN{FS="/"}{print $NF}'`
 329       if { echo "${i}" | ${grep} tcc; } >/dev/null 2>&1; then
 330          msg ' . have special tcc(1) environmental rules ...'
 331          _cc_flags_tcc
 332       else
 333          # As of pcc CVS 2016-04-02, stack protection support is announced but
 334          # will break if used on Linux
 335          if { echo "${i}" | ${grep} pcc; } >/dev/null 2>&1; then
 336             force_no_stackprot=1
 337          fi
 338          _cc_flags_generic
 339       fi
 340
 341       feat_no DEBUG && _CFLAGS="-DNDEBUG ${_CFLAGS}"
 342       CFLAGS="${_CFLAGS} ${EXTRA_CFLAGS}"
 343       LDFLAGS="${_LDFLAGS} ${EXTRA_LDFLAGS}"
 344    else
 345       if feat_no DEBUG; then
 346          CFLAGS="-DNDEBUG ${CFLAGS}"
 347       fi
 348    fi
 349    msg ''
 350    export CFLAGS LDFLAGS
 351 }
 352
 353 _cc_flags_tcc() {
 354    __cflags=${_CFLAGS} __ldflags=${_LDFLAGS}
 355    _CFLAGS= _LDFLAGS=
 356
 357    cc_check -Wall
 358    cc_check -Wextra
 359    cc_check -pedantic
 360
 361    if feat_yes DEBUG; then
 362       # May have problems to find libtcc cc_check -b
 363       cc_check -g
 364    fi
 365
 366    if ld_check -Wl,-rpath =./ no; then
 367       need_R_ldflags=-Wl,-rpath=
 368       ld_runtime_flags # update!
 369    fi
 370
 371    _CFLAGS="${_CFLAGS} ${__cflags}" _LDFLAGS="${_LDFLAGS} ${__ldflags}"
 372    unset __cflags __ldflags
 373 }
 374
 375 _cc_flags_generic() {
 376    __cflags=${_CFLAGS} __ldflags=${_LDFLAGS}
 377    _CFLAGS= _LDFLAGS=
 378    feat_yes DEVEL && cc_check -std=c89 || cc_check -std=c99
 379
 380    # Check -g first since some others may rely upon -g / optim. level
 381    if feat_yes DEBUG; then
 382       cc_check -O
 383       cc_check -g
 384    elif [ ${cc_maxopt} -gt 2 ] && cc_check -O3; then
 385       :
 386    elif [ ${cc_maxopt} -gt 1 ] && cc_check -O2; then
 387       :
 388    elif [ ${cc_maxopt} -gt 0 ] && cc_check -O1; then
 389       :
 390    else
 391       cc_check -O
 392    fi
 393
 394    if feat_yes DEVEL && cc_check -Weverything; then
 395       :
 396    else
 397       cc_check -Wall
 398       cc_check -Wextra
 399       cc_check -Wbad-function-cast
 400       cc_check -Wcast-align
 401       cc_check -Wcast-qual
 402       cc_check -Winit-self
 403       cc_check -Wmissing-prototypes
 404       cc_check -Wshadow
 405       cc_check -Wunused
 406       cc_check -Wwrite-strings
 407       cc_check -Wno-long-long
 408    fi
 409    cc_check -pedantic
 410
 411    if feat_yes AMALGAMATION && feat_no DEVEL; then
 412       cc_check -Wno-unused-function
 413    fi
 414    feat_no DEVEL && cc_check -Wno-unused-result # XXX do right way (pragma too)
 415
 416    cc_check -fno-unwind-tables
 417    cc_check -fno-asynchronous-unwind-tables
 418    cc_check -fstrict-aliasing
 419    if cc_check -fstrict-overflow && feat_yes DEVEL; then
 420       cc_check -Wstrict-overflow=5
 421    fi
 422
 423    if feat_yes DEBUG || feat_yes FORCED_STACKPROT; then
 424       if [ -z "${force_no_stackprot}" ]; then
 425          if cc_check -fstack-protector-strong ||
 426                cc_check -fstack-protector-all; then
 427             cc_check -D_FORTIFY_SOURCE=2
 428          fi
 429       else
 430          msg 'Not checking for -fstack-protector compiler option,'
 431          msg 'since that caused errors in a "similar" configuration.'
 432          msg 'You may turn off WANT_AUTOCC and use your own settings, rerun'
 433       fi
 434    fi
 435
 436    if feat_yes AMALGAMATION; then
 437       cc_check -pipe
 438    fi
 439
 440    # LD (+ dependend CC)
 441
 442    if feat_yes DEVEL; then
 443       _ccfg=${_CFLAGS}
 444       # -fsanitize=address
 445       #if cc_check -fsanitize=memory &&
 446       #      ld_check -fsanitize=memory &&
 447       #      cc_check -fsanitize-memory-track-origins=2 &&
 448       #      ld_check -fsanitize-memory-track-origins=2; then
 449       #   :
 450       #else
 451       #   _CFLAGS=${_ccfg}
 452       #fi
 453    fi
 454
 455    ld_check -Wl,-z,relro
 456    ld_check -Wl,-z,now
 457    ld_check -Wl,-z,noexecstack
 458    if ld_check -Wl,-rpath =./ no; then
 459       need_R_ldflags=-Wl,-rpath=
 460       ld_runtime_flags # update!
 461    elif ld_check -Wl,-R ./ no; then
 462       need_R_ldflags=-Wl,-R
 463       ld_runtime_flags # update!
 464    fi
 465
 466    # Address randomization
 467    _ccfg=${_CFLAGS}
 468    if cc_check -fPIE || cc_check -fpie; then
 469       ld_check -pie || _CFLAGS=${_ccfg}
 470    fi
 471    unset _ccfg
 472
 473    _CFLAGS="${_CFLAGS} ${__cflags}" _LDFLAGS="${_LDFLAGS} ${__ldflags}"
 474    unset __cflags __ldflags
 475 }
 476
 477 ##  --  >8  --  8<  --  ##
 478
 479 ## Notes:
 480 ## - Heirloom sh(1) (and same origin) have _sometimes_ problems with ': >'
 481 ##   redirection, so use "printf '' >" instead
 482
 483 ## Very first: we undergo several states regarding I/O redirection etc.,
 484 ## but need to deal with option updates from within all.  Since all the
 485 ## option stuff should be above the scissor line, define utility functions
 486 ## and redefine them as necessary.
 487 ## And, since we have those functions, simply use them for whatever
 488
 489 config_exit() {
 490    exit ${1}
 491 }
 492
 493 msg() {
 494    fmt=${1}
 495    shift
 496    printf >&2 -- "${fmt}\\n" "${@}"
 497 }
 498
 499 ## First of all, create new configuration and check wether it changed
 500
 501 rc=./make.rc
 502 lst=./config.lst
 503 ev=./config.ev
 504 h=./config.h h_name=config.h
 505 mk=./mk.mk
 506
 507 newlst=./config.lst-new
 508 newmk=./config.mk-new
 509 newev=./config.ev-new
 510 newh=./config.h-new
 511 tmp0=___tmp
 512 tmp=./${tmp0}1$$
 513 tmp2=./${tmp0}2$$
 514
 515 t1=ten10one1ten10one1
 516 if ( [ ${t1##*ten10} = one1 ] && [ ${t1#*ten10} = one1ten10one1 ] &&
 517       [ ${t1%%one1*} = ten10 ] && [ ${t1%one1*} = ten10one1ten10 ]
 518       ) > /dev/null 2>&1; then
 519    good_shell=1
 520 else
 521    unset good_shell
 522 fi
 523 unset t1
 524
 525 # We need some standard utilities
 526 unset -f command
 527 check_tool() {
 528    n=${1} i=${2} opt=${3:-0}
 529    # Evaluate, just in case user comes in with shell snippets (..well..)
 530    eval i="${i}"
 531    if type "${i}" >/dev/null 2>&1; then # XXX why have i type not command -v?
 532       [ -n "${VERBOSE}" ] && msg ' . ${%s} ... %s' "${n}" "${i}"
 533       eval ${n}=${i}
 534       return 0
 535    fi
 536    if [ ${opt} -eq 0 ]; then
 537       msg 'ERROR: no trace of utility "%s"' "${n}"
 538       config_exit 1
 539    fi
 540    return 1
 541 }
 542
 543 # Very easy checks for the operating system in order to be able to adjust paths
 544 # or similar very basic things which we need to be able to go at all
 545 os_early_setup
 546
 547 # Check those tools right now that we need before including $rc
 548 msg 'Checking for basic utility set'
 549 check_tool awk "${awk:-`command -v awk`}"
 550 check_tool rm "${rm:-`command -v rm`}"
 551 check_tool tr "${tr:-`command -v tr`}"
 552
 553 # Our feature check environment
 554 feat_val_no() {
 555    [ "x${1}" = x0 ] || [ "x${1}" = xn ] ||
 556    [ "x${1}" = xfalse ] || [ "x${1}" = xno ] || [ "x${1}" = xoff ]
 557 }
 558
 559 feat_val_yes() {
 560    [ "x${1}" = x1 ] || [ "x${1}" = xy ] ||
 561    [ "x${1}" = xtrue ] || [ "x${1}" = xyes ] || [ "x${1}" = xon ] ||
 562          [ "x${1}" = xrequire ]
 563 }
 564
 565 feat_val_require() {
 566    [ "x${1}" = xrequire ]
 567 }
 568
 569 _feat_check() {
 570    eval i=\$WANT_${1}
 571    i="`echo ${i} | ${tr} '[A-Z]' '[a-z]'`"
 572    if feat_val_no "${i}"; then
 573       return 1
 574    elif feat_val_yes "${i}"; then
 575       return 0
 576    else
 577       msg "ERROR: %s: 0/n/false/no/off or 1/y/true/yes/on/require, got: %s" \
 578          "${1}" "${i}"
 579       config_exit 11
 580    fi
 581 }
 582
 583 feat_yes() {
 584    _feat_check ${1}
 585 }
 586
 587 feat_no() {
 588    _feat_check ${1} && return 1
 589    return 0
 590 }
 591
 592 feat_require() {
 593    eval i=\$WANT_${1}
 594    i="`echo ${i} | ${tr} '[A-Z]' '[a-z]'`"
 595    [ "x${i}" = xrequire ] || [ "x${i}" = xrequired ]
 596 }
 597
 598 feat_bail_required() {
 599    if feat_require ${1}; then
 600       msg 'ERROR: feature WANT_%s is required but not available' "${1}"
 601       config_exit 13
 602    fi
 603    eval WANT_${1}=0
 604    option_update # XXX this is rather useless here (dependency chain..)
 605 }
 606
 607 path_check() {
 608    # "path_check VARNAME" or "path_check VARNAME FLAG VARNAME"
 609    varname=${1} addflag=${2} flagvarname=${3}
 610    j=${IFS}
 611    IFS=:
 612    eval "set -- \$${1}"
 613    IFS=${j}
 614    j= k= y= z=
 615    for i
 616    do
 617       [ -z "${i}" ] && continue
 618       [ -d "${i}" ] || continue
 619       # Skip any fakeroot packager environment
 620       case "${i}" in *fakeroot*) continue;; esac
 621       if [ -n "${j}" ]; then
 622          if { z=${y}; echo "${z}"; } | ${grep} ":${i}:" >/dev/null 2>&1; then
 623             :
 624          else
 625             y="${y} :${i}:"
 626             j="${j}:${i}"
 627             [ -n "${addflag}" ] && k="${k} ${addflag}${i}"
 628          fi
 629       else
 630          y=" :${i}:"
 631          j="${i}"
 632          [ -n "${addflag}" ] && k="${addflag}${i}"
 633       fi
 634    done
 635    eval "${varname}=\"${j}\""
 636    [ -n "${addflag}" ] && eval "${flagvarname}=\"${k}\""
 637    unset varname
 638 }
 639
 640 ld_runtime_flags() {
 641    if [ -n "${need_R_ldflags}" ]; then
 642       i=${IFS}
 643       IFS=:
 644       set -- ${LD_LIBRARY_PATH}
 645       IFS=${i}
 646       for i
 647       do
 648          LDFLAGS="${LDFLAGS} ${need_R_ldflags}${i}"
 649          _LDFLAGS="${_LDFLAGS} ${need_R_ldflags}${i}"
 650       done
 651       export LDFLAGS
 652    fi
 653    # Disable it for a possible second run.
 654    need_R_ldflags=
 655 }
 656
 657 cc_check() {
 658    [ -n "${cc_check_silent}" ] || printf >&2 ' . CC %s .. ' "${1}"
 659    if "${CC}" ${INCS} \
 660          ${_CFLAGS} ${1} ${EXTRA_CFLAGS} ${_LDFLAGS} ${EXTRA_LDFLAGS} \
 661          -o ${tmp2} ${tmp}.c ${LIBS} >/dev/null 2>&1; then
 662       _CFLAGS="${_CFLAGS} ${1}"
 663       [ -n "${cc_check_silent}" ] || printf >&2 'yes\n'
 664       return 0
 665    fi
 666    [ -n "${cc_check_silent}" ] || printf >&2 'no\n'
 667    return 1
 668 }
 669
 670 ld_check() {
 671    # $1=option [$2=option argument] [$3=if set, shall NOT be added to _LDFLAGS]
 672    [ -n "${cc_check_silent}" ] || printf >&2 ' . LD %s .. ' "${1}"
 673    if "${CC}" ${INCS} ${_CFLAGS} ${_LDFLAGS} ${1}${2} ${EXTRA_LDFLAGS} \
 674          -o ${tmp2} ${tmp}.c ${LIBS} >/dev/null 2>&1; then
 675       [ -n "${3}" ] || _LDFLAGS="${_LDFLAGS} ${1}"
 676       [ -n "${cc_check_silent}" ] || printf >&2 'yes\n'
 677       return 0
 678    fi
 679    [ -n "${cc_check_silent}" ] || printf >&2 'no\n'
 680    return 1
 681 }
 682
 683 # Include $rc, but only take from it what wasn't overwritten by the user from
 684 # within the command line or from a chosen fixed CONFIG=
 685 # Note we leave alone the values
 686 trap "exit 1" HUP INT TERM
 687 trap "${rm} -f ${tmp}" EXIT
 688
 689 printf >&2 'Reading and preparing configuration from "%s" ... ' ${rc}
 690 ${rm} -f ${tmp}
 691 # We want read(1) to perform backslash escaping in order to be able to use
 692 # multiline values in make.rc; the resulting sh(1)/sed(1) code was very slow in
 693 # VMs (see [fa2e248]), Aharon Robbins suggested the following
 694 < ${rc} ${awk} 'BEGIN{line = ""}{
 695    gsub(/^[[:space:]]+/, "", $0)
 696    gsub(/[[:space:]]+$/, "", $0)
 697    if(gsub(/\\$/, "", $0)){
 698       line = line $0
 699       next
 700    }else
 701       line = line $0
 702    if(index(line, "#") == 1){
 703       line = ""
 704    }else if(length(line)){
 705       print line
 706       line = ""
 707    }
 708 }' |
 709 while read line; do
 710    if [ -n "${good_shell}" ]; then
 711       i=${line%%=*}
 712    else
 713       i=`${awk} -v LINE="${line}" 'BEGIN{
 714          gsub(/=.*$/, "", LINE)
 715          print LINE
 716       }'`
 717    fi
 718    if [ "${i}" = "${line}" ]; then
 719       msg 'ERROR: invalid syntax in "%s"' "${line}"
 720       continue
 721    fi
 722
 723    eval j="\$${i}" jx="\${${i}+x}"
 724    if [ -n "${j}" ] || [ "${jx}" = x ]; then
 725       : # Yet present
 726    else
 727       j=`${awk} -v LINE="${line}" 'BEGIN{
 728          gsub(/^[^=]*=/, "", LINE)
 729          gsub(/^\"*/, "", LINE)
 730          gsub(/\"*$/, "", LINE)
 731          print LINE
 732       }'`
 733    fi
 734    [ "${i}" = "DESTDIR" ] && continue
 735    echo "${i}=\"${j}\""
 736 done > ${tmp}
 737 # Reread the mixed version right now
 738 . ./${tmp}
 739 printf >&2 'done\n'
 740
 741 # We need to know about that now, in order to provide utility overwrites etc.
 742 os_setup
 743
 744 msg 'Checking for remaining set of utilities'
 745 check_tool grep "${grep:-`command -v grep`}"
 746
 747 # Before we step ahead with the other utilities perform a path cleanup first.
 748 path_check PATH
 749
 750 # awk(1) above
 751 check_tool cat "${cat:-`command -v cat`}"
 752 check_tool chmod "${chmod:-`command -v chmod`}"
 753 check_tool cp "${cp:-`command -v cp`}"
 754 check_tool cmp "${cmp:-`command -v cmp`}"
 755 # grep(1) above
 756 check_tool mkdir "${mkdir:-`command -v mkdir`}"
 757 check_tool mv "${mv:-`command -v mv`}"
 758 # rm(1) above
 759 check_tool sed "${sed:-`command -v sed`}"
 760 check_tool sort "${sort:-`command -v sort`}"
 761 check_tool tee "${tee:-`command -v tee`}"
 762
 763 check_tool chown "${chown:-`command -v chown`}" 1 ||
 764    check_tool chown "/sbin/chown" 1 ||
 765    check_tool chown "/usr/sbin/chown"
 766
 767 check_tool make "${MAKE:-`command -v make`}"
 768 MAKE=${make}
 769 check_tool strip "${STRIP:-`command -v strip`}" 1 &&
 770    HAVE_STRIP=1 || HAVE_STRIP=0
 771
 772 # For ./cc-test.sh only
 773 check_tool cksum "${cksum:-`command -v cksum`}"
 774
 775 # Update WANT_ options now, in order to get possible inter-dependencies right
 776 option_update
 777
 778 # (No functions since some shells loose non-exported variables in traps)
 779 trap "trap \"\" HUP INT TERM; exit 1" HUP INT TERM
 780 trap "trap \"\" HUP INT TERM EXIT;\
 781    ${rm} -rf ${newlst} ${tmp0}.* ${tmp0}* ${newmk} ${newev} ${newh}" EXIT
 782
 783 # Our configuration options may at this point still contain shell snippets,
 784 # we need to evaluate them in order to get them expanded, and we need those
 785 # evaluated values not only in our new configuration file, but also at hand..
 786 printf >&2 'Evaluating all configuration items ... '
 787 ${rm} -f ${newlst} ${newmk} ${newh}
 788 exec 5<&0 6>&1 <${tmp} >${newlst}
 789 while read line; do
 790    z=
 791    if [ -n "${good_shell}" ]; then
 792       i=${line%%=*}
 793       [ "${i}" != "${i#WANT_}" ] && z=1
 794    else
 795       i=`${awk} -v LINE="${line}" 'BEGIN{
 796          gsub(/=.*$/, "", LINE);\
 797          print LINE
 798       }'`
 799       if echo "${i}" | ${grep} '^WANT_' >/dev/null 2>&1; then
 800          z=1
 801       fi
 802    fi
 803
 804    eval j=\$${i}
 805    if [ -n "${z}" ]; then
 806       j="`echo ${j} | ${tr} '[A-Z]' '[a-z]'`"
 807       if [ -z "${j}" ] || feat_val_no "${j}"; then
 808          j=0
 809          printf "/*#define ${i}*/\n" >> ${newh}
 810       elif feat_val_yes "${j}"; then
 811          if feat_val_require "${j}"; then
 812             j=require
 813          else
 814             j=1
 815          fi
 816          printf "#define ${i}\n" >> ${newh}
 817       else
 818          msg 'ERROR: cannot parse <%s>' "${line}"
 819          config_exit 1
 820       fi
 821    else
 822       printf "#define ${i} \"${j}\"\n" >> ${newh}
 823    fi
 824    printf "${i} = ${j}\n" >> ${newmk}
 825    printf "${i}=${j}\n"
 826    eval "${i}=\"${j}\""
 827 done
 828 exec 0<&5 1>&6 5<&- 6<&-
 829 printf >&2 'done\n'
 830
 831 # Add the known utility and some other variables
 832 printf "#define UAGENT \"${SID}${NAIL}\"\n" >> ${newh}
 833 printf "UAGENT = ${SID}${NAIL}\n" >> ${newmk}
 834
 835 printf "#define PRIVSEP \"${SID}${NAIL}-privsep\"\n" >> ${newh}
 836 printf "PRIVSEP = \$(UAGENT)-privsep\n" >> ${newmk}
 837 if feat_yes DOTLOCK; then
 838    printf "OPTIONAL_PRIVSEP = \$(PRIVSEP)\n" >> ${newmk}
 839 else
 840    printf "OPTIONAL_PRIVSEP =\n" >> ${newmk}
 841 fi
 842
 843 for i in \
 844       awk cat chmod chown cp cmp grep mkdir mv rm sed sort tee tr \
 845       MAKE MAKEFLAGS make SHELL strip \
 846       cksum; do
 847    eval j=\$${i}
 848    printf "${i} = ${j}\n" >> ${newmk}
 849    printf "${i}=${j}\n" >> ${newlst}
 850    printf "${i}=\"${j}\";export ${i}; " >> ${newev}
 851 done
 852 printf "\n" >> ${newev}
 853
 854 # Build a basic set of INCS and LIBS according to user environment.
 855 path_check C_INCLUDE_PATH -I _INCS
 856 INCS="${INCS} ${_INCS}"
 857 path_check LD_LIBRARY_PATH -L _LIBS
 858 LIBS="${LIBS} ${_LIBS}"
 859 unset _INCS _LIBS
 860 export C_INCLUDE_PATH LD_LIBRARY_PATH
 861
 862 # Some environments need runtime path flags to be able to go at all
 863 ld_runtime_flags
 864
 865 ## Detect CC, wether we can use it, and possibly which CFLAGS we can use
 866
 867 cc_setup
 868
 869 ${cat} > ${tmp}.c << \!
 870 #include <stdio.h>
 871 #include <string.h>
 872 static void doit(char const *s);
 873 int
 874 main(int argc, char **argv){
 875    (void)argc;
 876    (void)argv;
 877    doit("Hello world");
 878    return 0;
 879 }
 880 static void
 881 doit(char const *s){
 882    char buf[12];
 883    memcpy(buf, s, strlen(s) +1);
 884    puts(s);
 885 }
 886 !
 887
 888 if "${CC}" ${INCS} ${CFLAGS} ${EXTRA_CFLAGS} ${LDFLAGS} ${EXTRA_LDFLAGS} \
 889       -o ${tmp2} ${tmp}.c ${LIBS}; then
 890    :
 891 else
 892    msg 'ERROR: i cannot compile a "Hello world" via'
 893    msg '   %s' \
 894    "${CC} ${INCS} ${CFLAGS} ${EXTRA_CFLAGS} ${LDFLAGS} ${EXTRA_LDFLAGS} ${LIBS}"
 895    msg 'ERROR:   Please read INSTALL, rerun'
 896    config_exit 1
 897 fi
 898
 899 # This may also update ld_runtime_flags() (again)
 900 cc_flags
 901
 902 for i in \
 903       INCS LIBS \
 904       ; do
 905    eval j=\$${i}
 906    printf -- "${i}=${j}\n" >> ${newlst}
 907 done
 908 for i in \
 909       CC \
 910       CFLAGS \
 911       LDFLAGS \
 912       PATH C_INCLUDE_PATH LD_LIBRARY_PATH \
 913       OSFULLSPEC \
 914       ; do
 915    eval j=\$${i}
 916    printf -- "${i} = ${j}\n" >> ${newmk}
 917    printf -- "${i}=${j}\n" >> ${newlst}
 918 done
 919
 920 # Now finally check wether we already have a configuration and if so, wether
 921 # all those parameters are still the same.. or something has actually changed
 922 if [ -f ${lst} ] && ${cmp} ${newlst} ${lst} >/dev/null 2>&1; then
 923    echo 'Configuration is up-to-date'
 924    exit 0
 925 elif [ -f ${lst} ]; then
 926    echo 'Configuration has been updated..'
 927    ( eval "${MAKE} -f ./mk.mk clean" )
 928    echo
 929 else
 930    echo 'Shiny configuration..'
 931 fi
 932
 933 # Time to redefine helper 1
 934 config_exit() {
 935    ${rm} -f ${lst} ${h} ${mk}
 936    exit ${1}
 937 }
 938
 939 ${mv} -f ${newlst} ${lst}
 940 ${mv} -f ${newev} ${ev}
 941 ${mv} -f ${newh} ${h}
 942 ${mv} -f ${newmk} ${mk}
 943
 944 if [ -z "${VERBOSE}" ]; then
 945    printf -- "ECHO_CC = @echo '  'CC \$(@);\n" >> ${mk}
 946    printf -- "ECHO_LINK = @echo '  'LINK \$(@);\n" >> ${mk}
 947    printf -- "ECHO_GEN = @echo '  'GEN \$(@);\n" >> ${mk}
 948    printf -- "ECHO_TEST = @\n" >> ${mk}
 949    printf -- "ECHO_CMD = @echo '  CMD';\n" >> ${mk}
 950    printf -- "ECHO_BLOCK_BEGIN = @( \n" >> ${mk}
 951    printf -- "ECHO_BLOCK_END = ) >/dev/null\n" >> ${mk}
 952 fi
 953
 954 ## Compile and link checking
 955
 956 tmp3=./${tmp0}3$$
 957 log=./config.log
 958 lib=./config.lib
 959 inc=./config.inc
 960 makefile=./config.mk
 961
 962 # (No function since some shells loose non-exported variables in traps)
 963 trap "trap \"\" HUP INT TERM;\
 964    ${rm} -f ${lst} ${h} ${mk} ${lib} ${inc}; exit 1" HUP INT TERM
 965 trap "trap \"\" HUP INT TERM EXIT;\
 966    ${rm} -rf ${tmp0}.* ${tmp0}* ${makefile}" EXIT
 967
 968 # Time to redefine helper 2
 969 msg() {
 970    fmt=${1}
 971    shift
 972    printf "*** ${fmt}\\n" "${@}"
 973    printf -- "${fmt}\\n" "${@}" >&5
 974 }
 975 msg_nonl() {
 976    fmt=${1}
 977    shift
 978    printf "*** ${fmt}\\n" "${@}"
 979    printf -- "${fmt}" "${@}" >&5
 980 }
 981
 982 exec 5>&2 > ${log} 2>&1
 983
 984 echo "${LIBS}" > ${lib}
 985 echo "${INCS}" > ${inc}
 986 ${cat} > ${makefile} << \!
 987 .SUFFIXES: .o .c .x .y
 988 .c.o:
 989         $(CC) -I./ $(XINCS) $(CFLAGS) -c $(<)
 990 .c.x:
 991         $(CC) -I./ $(XINCS) -E $(<) > $(@)
 992 .c:
 993         $(CC) -I./ $(XINCS) $(CFLAGS) $(LDFLAGS) -o $(@) $(<) $(XLIBS)
 994 !
 995
 996 _check_preface() {
 997    variable=$1 topic=$2 define=$3
 998
 999    echo '**********'
1000    msg_nonl ' . %s ... ' "${topic}"
1001    echo "/* checked ${topic} */" >> ${h}
1002    ${rm} -f ${tmp} ${tmp}.o
1003    echo '*** test program is'
1004    { echo '#include <'"${h_name}"'>'; cat; } | ${tee} ${tmp}.c
1005    #echo '*** the preprocessor generates'
1006    #${make} -f ${makefile} ${tmp}.x
1007    #${cat} ${tmp}.x
1008    echo '*** results are'
1009 }
1010
1011 compile_check() {
1012    variable=$1 topic=$2 define=$3
1013
1014    _check_preface "${variable}" "${topic}" "${define}"
1015
1016    if ${make} -f ${makefile} XINCS="${INCS}" ./${tmp}.o &&
1017          [ -f ./${tmp}.o ]; then
1018       msg 'yes'
1019       echo "${define}" >> ${h}
1020       eval have_${variable}=yes
1021       return 0
1022    else
1023       echo "/* ${define} */" >> ${h}
1024       msg 'no'
1025       eval unset have_${variable}
1026       return 1
1027    fi
1028 }
1029
1030 _link_mayrun() {
1031    run=$1 variable=$2 topic=$3 define=$4 libs=$5 incs=$6
1032
1033    _check_preface "${variable}" "${topic}" "${define}"
1034
1035    feat_yes CROSS_BUILD && run=0
1036
1037    if ${make} -f ${makefile} XINCS="${INCS} ${incs}" \
1038             XLIBS="${LIBS} ${libs}" ./${tmp} &&
1039          [ -f ./${tmp} ] &&
1040          { [ ${run} -eq 0 ] || ./${tmp}; }; then
1041       echo "*** adding INCS<${incs}> LIBS<${libs}>; executed: ${run}"
1042       msg 'yes'
1043       echo "${define}" >> ${h}
1044       LIBS="${LIBS} ${libs}"
1045       echo "${libs}" >> ${lib}
1046       INCS="${INCS} ${incs}"
1047       echo "${incs}" >> ${inc}
1048       eval have_${variable}=yes
1049       return 0
1050    else
1051       msg 'no'
1052       echo "/* ${define} */" >> ${h}
1053       eval unset have_${variable}
1054       return 1
1055    fi
1056 }
1057
1058 link_check() {
1059    _link_mayrun 0 "${1}" "${2}" "${3}" "${4}" "${5}"
1060 }
1061
1062 run_check() {
1063    _link_mayrun 1 "${1}" "${2}" "${3}" "${4}" "${5}"
1064 }
1065
1066 feat_def() {
1067    if feat_yes ${1}; then
1068       echo '#define HAVE_'${1}'' >> ${h}
1069    else
1070       echo '/* WANT_'${1}'=0 */' >> ${h}
1071    fi
1072 }
1073
1074 squeeze_em() {
1075    < "${1}" > "${2}" ${awk} \
1076    'BEGIN {ORS = " "} /^[^#]/ {print} {next} END {ORS = ""; print "\n"}'
1077 }
1078
1079 ## Generics
1080
1081 # May be multiline..
1082 [ -n "${OS_DEFINES}" ] && printf -- "${OS_DEFINES}" >> ${h}
1083
1084 feat_def AMALGAMATION
1085 feat_def CROSS_BUILD
1086 feat_def DEBUG
1087 feat_def DEVEL
1088 feat_def DOCSTRINGS
1089 feat_def ERRORS
1090 feat_def NYD2
1091
1092 if run_check inline '"inline" functions' \
1093    '#define HAVE_INLINE
1094    #define n_INLINE static inline' << \!
1095 static inline int ilf(int i){return ++i;}
1096 int main(void){return ilf(-1);}
1097 !
1098 then
1099    :
1100 elif run_check inline '"__inline" functions' \
1101    '#define HAVE_INLINE
1102    #define n_INLINE static __inline' << \!
1103 static __inline int ilf(int i){return ++i;}
1104 int main(void){return ilf(-1);}
1105 !
1106 then
1107    :
1108 fi
1109
1110 if run_check endian 'Little endian byteorder' \
1111    '#define HAVE_BYTE_ORDER_LITTLE' << \!
1112 int main(void){
1113    enum {vBig = 1, vLittle = 0};
1114    union {unsigned short bom; unsigned char buf[2];} u;
1115    u.bom = 0xFEFF;
1116    return((u.buf[1] == 0xFE) ? vLittle : vBig);
1117 }
1118 !
1119 then
1120    :
1121 fi
1122
1123 ## Test for "basic" system-calls / functionality that is used by all parts
1124 ## of our program.  Once this is done fork away BASE_LIBS and other BASE_*
1125 ## macros to be used by only the subprograms (potentially).
1126
1127 if run_check clock_gettime 'clock_gettime(2)' \
1128    '#define HAVE_CLOCK_GETTIME' << \!
1129 #include <time.h>
1130 # include <errno.h>
1131 int main(void){
1132    struct timespec ts;
1133
1134    if(!clock_gettime(CLOCK_REALTIME, &ts) || errno != ENOSYS)
1135       return 0;
1136    return 1;
1137 }
1138 !
1139 then
1140    :
1141 elif run_check clock_gettime 'clock_gettime(2) (via -lrt)' \
1142    '#define HAVE_CLOCK_GETTIME' '-lrt' << \!
1143 #include <time.h>
1144 # include <errno.h>
1145 int main(void){
1146    struct timespec ts;
1147
1148    if(!clock_gettime(CLOCK_REALTIME, &ts) || errno != ENOSYS)
1149       return 0;
1150    return 1;
1151 }
1152 !
1153 then
1154    :
1155 elif run_check gettimeofday 'gettimeofday(2)' \
1156    '#define HAVE_GETTIMEOFDAY' << \!
1157 #include <stdio.h> /* For C89 NULL */
1158 #include <sys/time.h>
1159 # include <errno.h>
1160 int main(void){
1161    struct timeval tv;
1162
1163    if(!gettimeofday(&tv, NULL) || errno != ENOSYS)
1164       return 0;
1165    return 1;
1166 }
1167 !
1168 then
1169    :
1170 else
1171    have_no_subsecond_time=1
1172 fi
1173
1174 if run_check nanosleep 'nanosleep(2)' \
1175    '#define HAVE_NANOSLEEP' << \!
1176 #include <time.h>
1177 # include <errno.h>
1178 int main(void){
1179    struct timespec ts;
1180
1181    ts.tv_sec = 1;
1182    ts.tv_nsec = 100000;
1183    if(!nanosleep(&ts, NULL) || errno != ENOSYS)
1184       return 0;
1185    return 1;
1186 }
1187 !
1188 then
1189    :
1190 elif run_check nanosleep 'nanosleep(2) (via -lrt)' \
1191    '#define HAVE_NANOSLEEP' '-lrt' << \!
1192 #include <time.h>
1193 # include <errno.h>
1194 int main(void){
1195    struct timespec ts;
1196
1197    ts.tv_sec = 1;
1198    ts.tv_nsec = 100000;
1199    if(!nanosleep(&ts, NULL) || errno != ENOSYS)
1200       return 0;
1201    return 1;
1202 }
1203 !
1204 then
1205    :
1206 # link_check is enough for this, that function is so old, trust the proto
1207 elif link_check sleep 'sleep(3)' \
1208    '#define HAVE_SLEEP' << \!
1209 #include <unistd.h>
1210 # include <errno.h>
1211 int main(void){
1212    if(!sleep(1) || errno != ENOSYS)
1213       return 0;
1214    return 1;
1215 }
1216 !
1217 then
1218    :
1219 else
1220    msg 'ERROR: we require one of nanosleep(2) and sleep(3).'
1221    config_exit 1
1222 fi
1223
1224 if run_check userdb 'gete?[gu]id(2), getpwuid(3), getpwnam(3)' << \!
1225 #include <pwd.h>
1226 #include <unistd.h>
1227 # include <errno.h>
1228 int main(void){
1229    struct passwd *pw;
1230    gid_t gid;
1231    uid_t uid;
1232
1233    if((gid = getgid()) != 0)
1234       gid = getegid();
1235    if((uid = getuid()) != 0)
1236       uid = geteuid();
1237    if((pw = getpwuid(uid)) == NULL && errno == ENOSYS)
1238       return 1;
1239    if((pw = getpwnam("root")) == NULL && errno == ENOSYS)
1240       return 1;
1241    return 0;
1242 }
1243 !
1244 then
1245    :
1246 else
1247    msg 'ERROR: we require user and group info / database searches.'
1248    msg 'That much Unix we indulge ourselfs.'
1249    config_exit 1
1250 fi
1251
1252 if link_check ftruncate 'ftruncate(2)' \
1253    '#define HAVE_FTRUNCATE' << \!
1254 #include <unistd.h>
1255 #include <sys/types.h>
1256 int main(void){
1257    return (ftruncate(0, 0) != 0);
1258 }
1259 !
1260 then
1261    :
1262 else
1263    msg 'ERROR: we require the ftruncate(2) system call.'
1264    config_exit 1
1265 fi
1266
1267 if run_check sa_restart 'SA_RESTART (for sigaction(2))' << \!
1268 #include <signal.h>
1269 # include <errno.h>
1270 int main(void){
1271    struct sigaction nact, oact;
1272
1273    nact.sa_handler = SIG_DFL;
1274    sigemptyset(&nact.sa_mask);
1275    nact.sa_flags = SA_RESTART;
1276    return !(!sigaction(SIGCHLD, &nact, &oact) || errno != ENOSYS);
1277 }
1278 !
1279 then
1280    :
1281 else
1282    msg 'ERROR: we (yet) require the SA_RESTART flag for sigaction(2).'
1283    config_exit 1
1284 fi
1285
1286 if link_check snprintf 'snprintf(3)' << \!
1287 #include <stdio.h>
1288 int main(void){
1289    char b[20];
1290
1291    snprintf(b, sizeof b, "%s", "string");
1292    return 0;
1293 }
1294 !
1295 then
1296    :
1297 else
1298    msg 'ERROR: we require the snprintf(3) function.'
1299    config_exit 1
1300 fi
1301
1302 if link_check environ 'environ(3)' << \!
1303 #include <stdio.h> /* For C89 NULL */
1304 int main(void){
1305    extern char **environ;
1306
1307    return environ[0] == NULL;
1308 }
1309 !
1310 then
1311    :
1312 else
1313    msg 'ERROR: we require the environ(3) array for subprocess control.'
1314    config_exit 1
1315 fi
1316
1317 if link_check setenv '(un)?setenv(3)' '#define HAVE_SETENV' << \!
1318 #include <stdlib.h>
1319 int main(void){
1320    setenv("s-mailx", "i want to see it cute!", 1);
1321    unsetenv("s-mailx");
1322    return 0;
1323 }
1324 !
1325 then
1326    :
1327 elif link_check setenv 'putenv(3)' '#define HAVE_PUTENV' << \!
1328 #include <stdlib.h>
1329 int main(void){
1330    putenv("s-mailx=i want to see it cute!");
1331    return 0;
1332 }
1333 !
1334 then
1335    :
1336 else
1337    msg 'ERROR: we require either the setenv(3) or putenv(3) functions.'
1338    config_exit 1
1339 fi
1340
1341 if link_check termios 'termios.h and tc*(3) family' << \!
1342 #include <termios.h>
1343 int main(void){
1344    struct termios tios;
1345
1346    tcgetattr(0, &tios);
1347    tcsetattr(0, TCSADRAIN | TCSAFLUSH, &tios);
1348    return 0;
1349 }
1350 !
1351 then
1352    :
1353 else
1354    msg 'ERROR: we require termios.h and the tc*() family of functions.'
1355    msg 'That much Unix we indulge ourselfs.'
1356    config_exit 1
1357 fi
1358
1359 ## optional stuff
1360
1361 if link_check vsnprintf 'vsnprintf(3)' << \!
1362 #include <stdarg.h>
1363 #include <stdio.h>
1364 static void dome(char *buf, size_t blen, ...){
1365    va_list ap;
1366
1367    va_start(ap, buf);
1368    vsnprintf(buf, blen, "%s", ap);
1369    va_end(ap);
1370 }
1371 int main(void){
1372    char b[20];
1373
1374    dome(b, sizeof b, "string");
1375    return 0;
1376 }
1377 !
1378 then
1379    :
1380 else
1381    feat_bail_required ERRORS
1382 fi
1383
1384 if [ "${have_vsnprintf}" = yes ]; then
1385    link_check va_copy 'va_copy(3)' '#define HAVE_VA_COPY' << \!
1386 #include <stdarg.h>
1387 #include <stdio.h>
1388 static void dome2(char *buf, size_t blen, va_list src){
1389    va_list ap;
1390
1391    va_copy(ap, src);
1392    vsnprintf(buf, blen, "%s", ap);
1393    va_end(ap);
1394 }
1395 static void dome(char *buf, size_t blen, ...){
1396    va_list ap;
1397
1398    va_start(ap, buf);
1399    dome2(buf, blen, ap)
1400    va_end(ap);
1401 }
1402 int main(void){
1403    char b[20];
1404
1405    dome(b, sizeof b, "string");
1406    return 0;
1407 }
1408 !
1409 fi
1410
1411 run_check pathconf 'f?pathconf(2)' '#define HAVE_PATHCONF' << \!
1412 #include <unistd.h>
1413 #include <errno.h>
1414 int main(void){
1415    int rv = 0;
1416
1417    errno = 0;
1418    rv |= !(pathconf(".", _PC_NAME_MAX) >= 0 || errno == 0 || errno != ENOSYS);
1419    errno = 0;
1420    rv |= !(pathconf(".", _PC_PATH_MAX) >= 0 || errno == 0 || errno != ENOSYS);
1421
1422    /* Only link check */
1423    fpathconf(0, _PC_NAME_MAX);
1424
1425    return rv;
1426 }
1427 !
1428
1429 run_check pipe2 'pipe2(2)' '#define HAVE_PIPE2' << \!
1430 #include <fcntl.h>
1431 #include <unistd.h>
1432 # include <errno.h>
1433 int main(void){
1434    int fds[2];
1435
1436    if(!pipe2(fds, O_CLOEXEC) || errno != ENOSYS)
1437       return 0;
1438    return 1;
1439 }
1440 !
1441
1442 # We use this only then for now (need NOW+1)
1443 run_check utimensat 'utimensat(2)' '#define HAVE_UTIMENSAT' << \!
1444 #include <fcntl.h> /* For AT_* */
1445 #include <sys/stat.h>
1446 # include <errno.h>
1447 int main(void){
1448    struct timespec ts[2];
1449
1450    ts[0].tv_nsec = UTIME_NOW;
1451    ts[1].tv_nsec = UTIME_OMIT;
1452    if(!utimensat(AT_FDCWD, "", ts, 0) || errno != ENOSYS)
1453       return 0;
1454    return 1;
1455 }
1456 !
1457
1458 ##
1459
1460 # XXX Add POSIX check once standardized
1461 if link_check posix_random 'arc4random(3)' '#define HAVE_POSIX_RANDOM 0' << \!
1462 #include <stdlib.h>
1463 int main(void){
1464    arc4random();
1465    return 0;
1466 }
1467 !
1468 then
1469    :
1470 elif [ -n "${have_no_subsecond_time}" ]; then
1471    msg 'ERROR: %s %s' 'without a native random' \
1472       'one of clock_gettime(2) and gettimeofday(2) is required.'
1473    config_exit 1
1474 fi
1475
1476 link_check putc_unlocked 'putc_unlocked(3)' '#define HAVE_PUTC_UNLOCKED' <<\!
1477 #include <stdio.h>
1478 int main(void){
1479    putc_unlocked('@', stdout);
1480    return 0;
1481 }
1482 !
1483
1484 link_check fchdir 'fchdir(3)' '#define HAVE_FCHDIR' << \!
1485 #include <unistd.h>
1486 int main(void){
1487    fchdir(0);
1488    return 0;
1489 }
1490 !
1491
1492 if run_check realpath 'realpath(3)' '#define HAVE_REALPATH' << \!
1493 #include <stdlib.h>
1494 int main(void){
1495    char x_buf[4096], *x = realpath(".", x_buf);
1496
1497    return (x != NULL) ? 0 : 1;
1498 }
1499 !
1500 then
1501    if run_check realpath_malloc 'realpath(3) takes NULL' \
1502          '#define HAVE_REALPATH_NULL' << \!
1503 #include <stdlib.h>
1504 int main(void){
1505    char *x = realpath(".", NULL);
1506
1507    if(x != NULL)
1508       free(x);
1509    return (x != NULL) ? 0 : 1;
1510 }
1511 !
1512    then
1513       :
1514    fi
1515 fi
1516
1517 ## optional and selectable
1518
1519 if feat_no NOALLOCA; then
1520    # Due to NetBSD PR lib/47120 it seems best not to use non-cc-builtin
1521    # versions of alloca(3) since modern compilers just can't be trusted
1522    # not to overoptimize and silently break some code
1523    run_check alloca '__builtin_alloca()' \
1524       '#define HAVE_ALLOCA __builtin_alloca' << \!
1525 #include <stdio.h> /* For C89 NULL */
1526 int main(void){
1527    void *vp = __builtin_alloca(1);
1528
1529    return (vp != NULL);
1530 }
1531 !
1532 fi
1533
1534 if feat_yes DOTLOCK; then
1535    if run_check readlink 'readlink(2)' << \!
1536 #include <unistd.h>
1537 # include <errno.h>
1538 int main(void){
1539    char buf[128];
1540
1541    if(!readlink("here", buf, sizeof buf) || errno != ENOSYS)
1542       return 0;
1543    return 1;
1544 }
1545 !
1546    then
1547       :
1548    else
1549       feat_bail_required DOTLOCK
1550    fi
1551 fi
1552
1553 if feat_yes DOTLOCK; then
1554    if run_check fchown 'fchown(2)' << \!
1555 #include <unistd.h>
1556 # include <errno.h>
1557 int main(void){
1558    if(!fchown(0, 0, 0) || errno != ENOSYS)
1559       return 0;
1560    return 1;
1561 }
1562 !
1563    then
1564       :
1565    else
1566       feat_bail_required DOTLOCK
1567    fi
1568 fi
1569
1570 ## Now it is the time to fork away the BASE_ series
1571
1572 ${rm} -f ${tmp}
1573 squeeze_em ${inc} ${tmp}
1574 ${mv} ${tmp} ${inc}
1575 squeeze_em ${lib} ${tmp}
1576 ${mv} ${tmp} ${lib}
1577
1578 echo "BASE_LIBS = `${cat} ${lib}`" >> ${mk}
1579 echo "BASE_INCS = `${cat} ${inc}`" >> ${mk}
1580
1581 ## The remains are expected to be used only by the main MUA binary!
1582
1583 link_check setlocale 'setlocale(3)' '#define HAVE_SETLOCALE' << \!
1584 #include <locale.h>
1585 int main(void){
1586    setlocale(LC_ALL, "");
1587    return 0;
1588 }
1589 !
1590
1591 if [ "${have_setlocale}" = yes ]; then
1592    link_check c90amend1 'ISO/IEC 9899:1990/Amendment 1:1995' \
1593       '#define HAVE_C90AMEND1' << \!
1594 #include <limits.h>
1595 #include <stdlib.h>
1596 #include <wchar.h>
1597 #include <wctype.h>
1598 int main(void){
1599    char mbb[MB_LEN_MAX + 1];
1600    wchar_t wc;
1601
1602    iswprint(L'c');
1603    towupper(L'c');
1604    mbtowc(&wc, "x", 1);
1605    mbrtowc(&wc, "x", 1, NULL);
1606    wctomb(mbb, wc);
1607    return (mblen("\0", 1) == 0);
1608 }
1609 !
1610
1611    if [ "${have_c90amend1}" = yes ]; then
1612       link_check wcwidth 'wcwidth(3)' '#define HAVE_WCWIDTH' << \!
1613 #include <wchar.h>
1614 int main(void){
1615    wcwidth(L'c');
1616    return 0;
1617 }
1618 !
1619    fi
1620
1621    link_check nl_langinfo 'nl_langinfo(3)' '#define HAVE_NL_LANGINFO' << \!
1622 #include <langinfo.h>
1623 #include <stdlib.h>
1624 int main(void){
1625    nl_langinfo(DAY_1);
1626    return (nl_langinfo(CODESET) == NULL);
1627 }
1628 !
1629 fi # have_setlocale
1630
1631 link_check fnmatch 'fnmatch(3)' '#define HAVE_FNMATCH' << \!
1632 #include <fnmatch.h>
1633 int main(void){
1634    return (fnmatch("*", ".", FNM_PATHNAME | FNM_PERIOD) == FNM_NOMATCH);
1635 }
1636 !
1637
1638 link_check dirent_d_type 'struct dirent.d_type' '#define HAVE_DIRENT_TYPE' << \!
1639 #include <dirent.h>
1640 int main(void){
1641    struct dirent de;
1642    return !(de.d_type == DT_UNKNOWN ||
1643       de.d_type == DT_DIR || de.d_type == DT_LNK);
1644 }
1645 !
1646
1647 ## optional and selectable
1648
1649 if feat_yes ICONV; then
1650    ${cat} > ${tmp2}.c << \!
1651 #include <stdio.h> /* For C89 NULL */
1652 #include <iconv.h>
1653 int main(void){
1654    iconv_t id;
1655
1656    id = iconv_open("foo", "bar");
1657    iconv(id, NULL, NULL, NULL, NULL);
1658    iconv_close(id);
1659    return 0;
1660 }
1661 !
1662    < ${tmp2}.c link_check iconv 'iconv(3) functionality' \
1663          '#define HAVE_ICONV' ||
1664       < ${tmp2}.c link_check iconv 'iconv(3) functionality (via -liconv)' \
1665          '#define HAVE_ICONV' '-liconv' ||
1666       feat_bail_required ICONV
1667 else
1668    echo '/* WANT_ICONV=0 */' >> ${h}
1669 fi # feat_yes ICONV
1670
1671 if feat_yes SOCKETS || feat_yes SPAM_SPAMD; then
1672    ${cat} > ${tmp2}.c << \!
1673 #include <sys/types.h>
1674 #include <sys/socket.h>
1675 #include <sys/un.h>
1676 # include <errno.h>
1677 int main(void){
1678    struct sockaddr_un soun;
1679
1680    if(socket(AF_UNIX, SOCK_STREAM, 0) == -1 && errno == ENOSYS)
1681       return 1;
1682    if(connect(0, (struct sockaddr*)&soun, 0) == -1 && errno == ENOSYS)
1683       return 1;
1684    if(shutdown(0, SHUT_RD | SHUT_WR | SHUT_RDWR) == -1 && errno == ENOSYS)
1685       return 1;
1686    return 0;
1687 }
1688 !
1689
1690    < ${tmp2}.c run_check af_unix 'AF_UNIX sockets' \
1691          '#define HAVE_UNIX_SOCKETS' ||
1692       < ${tmp2}.c run_check af_unix 'AF_UNIX sockets (via -lnsl)' \
1693          '#define HAVE_UNIX_SOCKETS' '-lnsl' ||
1694       < ${tmp2}.c run_check af_unix 'AF_UNIX sockets (via -lsocket -lnsl)' \
1695          '#define HAVE_UNIX_SOCKETS' '-lsocket -lnsl'
1696 fi
1697
1698 if feat_yes SOCKETS; then
1699    ${cat} > ${tmp2}.c << \!
1700 #include "config.h"
1701 #include <sys/types.h>
1702 #include <sys/socket.h>
1703 #include <netinet/in.h>
1704 # include <errno.h>
1705 int main(void){
1706    struct sockaddr s;
1707
1708    if(socket(AF_INET, SOCK_STREAM, 0) == -1 && errno == ENOSYS)
1709       return 1;
1710    if(connect(0, &s, 0) == -1 && errno == ENOSYS)
1711       return 1;
1712    return 0;
1713 }
1714 !
1715
1716    < ${tmp2}.c run_check sockets 'sockets' \
1717          '#define HAVE_SOCKETS' ||
1718       < ${tmp2}.c run_check sockets 'sockets (via -lnsl)' \
1719          '#define HAVE_SOCKETS' '-lnsl' ||
1720       < ${tmp2}.c run_check sockets 'sockets (via -lsocket -lnsl)' \
1721          '#define HAVE_SOCKETS' '-lsocket -lnsl' ||
1722       feat_bail_required SOCKETS
1723 else
1724    echo '/* WANT_SOCKETS=0 */' >> ${h}
1725 fi # feat_yes SOCKETS
1726
1727 if feat_yes SOCKETS; then
1728    link_check getaddrinfo 'getaddrinfo(3)' \
1729       '#define HAVE_GETADDRINFO' << \!
1730 #include "config.h"
1731 #include <sys/types.h>
1732 #include <sys/socket.h>
1733 #include <stdio.h>
1734 #include <netdb.h>
1735 int main(void){
1736    struct addrinfo a, *ap;
1737    int lrv;
1738
1739    switch((lrv = getaddrinfo("foo", "0", &a, &ap))){
1740    case EAI_NONAME:
1741    case EAI_SERVICE:
1742    default:
1743       fprintf(stderr, "%s\n", gai_strerror(lrv));
1744    case 0:
1745       break;
1746    }
1747    return 0;
1748 }
1749 !
1750 fi
1751
1752 if feat_yes SOCKETS && [ -z "${have_getaddrinfo}" ]; then
1753    compile_check arpa_inet_h '<arpa/inet.h>' \
1754       '#define HAVE_ARPA_INET_H' << \!
1755 #include "config.h"
1756 #include <sys/types.h>
1757 #include <sys/socket.h>
1758 #include <netdb.h>
1759 #include <netinet/in.h>
1760 #include <arpa/inet.h>
1761 !
1762
1763    ${cat} > ${tmp2}.c << \!
1764 #include "config.h"
1765 #include <sys/types.h>
1766 #include <sys/socket.h>
1767 #include <stdio.h>
1768 #include <string.h>
1769 #include <netdb.h>
1770 #include <netinet/in.h>
1771 #ifdef HAVE_ARPA_INET_H
1772 #include <arpa/inet.h>
1773 #endif
1774 int main(void){
1775    struct sockaddr_in servaddr;
1776    unsigned short portno;
1777    struct servent *ep;
1778    struct hostent *hp;
1779    struct in_addr **pptr;
1780
1781    portno = 0;
1782    if((ep = getservbyname("POPPY-PORT", "tcp")) != NULL)
1783       portno = (unsigned short)ep->s_port;
1784
1785    if((hp = gethostbyname("POPPY-HOST")) != NULL){
1786       pptr = (struct in_addr**)hp->h_addr_list;
1787       if(hp->h_addrtype != AF_INET)
1788          fprintf(stderr, "au\n");
1789    }else{
1790       switch(h_errno){
1791       case HOST_NOT_FOUND:
1792       case TRY_AGAIN:
1793       case NO_RECOVERY:
1794       case NO_DATA:
1795          break;
1796       default:
1797          fprintf(stderr, "au\n");
1798          break;
1799       }
1800    }
1801
1802    memset(&servaddr, 0, sizeof servaddr);
1803    servaddr.sin_family = AF_INET;
1804    servaddr.sin_port = htons(portno);
1805    memcpy(&servaddr.sin_addr, *pptr, sizeof(struct in_addr));
1806    fprintf(stderr, "Would connect to %s:%d ...\n",
1807       inet_ntoa(**pptr), (int)portno);
1808    return 0;
1809 }
1810 !
1811
1812    < ${tmp2}.c link_check gethostbyname 'get(serv|host)byname(3)' ||
1813       < ${tmp2}.c link_check gethostbyname \
1814          'get(serv|host)byname(3) (via -nsl)' '' '-lnsl' ||
1815       < ${tmp2}.c link_check gethostbyname \
1816          'get(serv|host)byname(3) (via -lsocket -nsl)' \
1817          '' '-lsocket -lnsl' ||
1818       feat_bail_required SOCKETS
1819 fi
1820
1821 feat_yes SOCKETS &&
1822 run_check setsockopt 'setsockopt(2)' '#define HAVE_SETSOCKOPT' << \!
1823 #include <sys/socket.h>
1824 #include <stdlib.h>
1825 # include <errno.h>
1826 int main(void){
1827    int sockfd = 3;
1828
1829    if(setsockopt(sockfd, SOL_SOCKET, SO_KEEPALIVE, NULL, 0) == -1 &&
1830          errno == ENOSYS)
1831       return 1;
1832    return 0;
1833 }
1834 !
1835
1836 feat_yes SOCKETS && [ -n "${have_setsockopt}" ] &&
1837 link_check so_sndtimeo 'SO_SNDTIMEO' '#define HAVE_SO_SNDTIMEO' << \!
1838 #include <sys/socket.h>
1839 #include <stdlib.h>
1840 int main(void){
1841    struct timeval tv;
1842    int sockfd = 3;
1843
1844    tv.tv_sec = 42;
1845    tv.tv_usec = 21;
1846    setsockopt(sockfd, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof tv);
1847    setsockopt(sockfd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof tv);
1848    return 0;
1849 }
1850 !
1851
1852 feat_yes SOCKETS && [ -n "${have_setsockopt}" ] &&
1853 link_check so_linger 'SO_LINGER' '#define HAVE_SO_LINGER' << \!
1854 #include <sys/socket.h>
1855 #include <stdlib.h>
1856 int main(void){
1857    struct linger li;
1858    int sockfd = 3;
1859
1860    li.l_onoff = 1;
1861    li.l_linger = 42;
1862    setsockopt(sockfd, SOL_SOCKET, SO_LINGER, &li, sizeof li);
1863    return 0;
1864 }
1865 !
1866
1867 if feat_yes SSL; then
1868    if link_check openssl 'OpenSSL (new style *_client_method(3ssl))' \
1869       '#define HAVE_SSL
1870       #define HAVE_OPENSSL 10100' '-lssl -lcrypto' << \!
1871 #include <openssl/ssl.h>
1872 #include <openssl/err.h>
1873 #include <openssl/x509v3.h>
1874 #include <openssl/x509.h>
1875 #include <openssl/rand.h>
1876 #ifdef OPENSSL_NO_TLS1 /* TODO only deduced from OPENSSL_NO_SSL[23]! */
1877 # error We need TLSv1.
1878 #endif
1879 int main(void){
1880    SSL_CTX *ctx = SSL_CTX_new(TLS_client_method());
1881
1882    SSL_CTX_free(ctx);
1883    PEM_read_PrivateKey(0, 0, 0, 0);
1884    return 0;
1885 }
1886 !
1887    then
1888       :
1889    elif link_check openssl 'OpenSSL (old style *_client_method(3ssl))' \
1890       '#define HAVE_SSL
1891       #define HAVE_OPENSSL 10000' '-lssl -lcrypto' << \!
1892 #include <openssl/ssl.h>
1893 #include <openssl/err.h>
1894 #include <openssl/x509v3.h>
1895 #include <openssl/x509.h>
1896 #include <openssl/rand.h>
1897 #if defined OPENSSL_NO_SSL3 &&\
1898       defined OPENSSL_NO_TLS1 /* TODO only deduced from OPENSSL_NO_SSL[23]! */
1899 # error We need one of SSLv3 and TLSv1.
1900 #endif
1901 int main(void){
1902    SSL_CTX *ctx = SSL_CTX_new(SSLv23_client_method());
1903
1904    SSL_CTX_free(ctx);
1905    PEM_read_PrivateKey(0, 0, 0, 0);
1906    return 0;
1907 }
1908 !
1909    then
1910       :
1911    else
1912       feat_bail_required SSL
1913    fi
1914
1915    if [ "${have_openssl}" = 'yes' ]; then
1916       compile_check stack_of 'OpenSSL STACK_OF()' \
1917          '#define HAVE_OPENSSL_STACK_OF' << \!
1918 #include <stdio.h> /* For C89 NULL */
1919 #include <openssl/ssl.h>
1920 #include <openssl/err.h>
1921 #include <openssl/x509v3.h>
1922 #include <openssl/x509.h>
1923 #include <openssl/rand.h>
1924 int main(void){
1925    STACK_OF(GENERAL_NAME) *gens = NULL;
1926
1927    printf("%p", gens); /* to use it */
1928    return 0;
1929 }
1930 !
1931
1932       link_check ossl_conf 'OpenSSL_modules_load_file() support' \
1933          '#define HAVE_OPENSSL_CONFIG' << \!
1934 #include <stdio.h> /* For C89 NULL */
1935 #include <openssl/conf.h>
1936 int main(void){
1937    CONF_modules_load_file(NULL, NULL, CONF_MFLAGS_IGNORE_MISSING_FILE);
1938    CONF_modules_free();
1939    return 0;
1940 }
1941 !
1942
1943       link_check ossl_conf_ctx 'OpenSSL SSL_CONF_CTX support' \
1944          '#define HAVE_OPENSSL_CONF_CTX' << \!
1945 #include "config.h"
1946 #include <openssl/ssl.h>
1947 #include <openssl/err.h>
1948 int main(void){
1949 #if HAVE_OPENSSL < 10100
1950    SSL_CTX *ctx = SSL_CTX_new(SSLv23_client_method());
1951 #else
1952    SSL_CTX *ctx = SSL_CTX_new(TLS_client_method());
1953 #endif
1954    SSL_CONF_CTX *cctx = SSL_CONF_CTX_new();
1955
1956    SSL_CONF_CTX_set_flags(cctx,
1957       SSL_CONF_FLAG_FILE | SSL_CONF_FLAG_CLIENT |
1958       SSL_CONF_FLAG_CERTIFICATE | SSL_CONF_FLAG_SHOW_ERRORS);
1959    SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
1960    SSL_CONF_cmd(cctx, "Protocol", "ALL");
1961    SSL_CONF_CTX_finish(cctx);
1962    SSL_CONF_CTX_free(cctx);
1963    SSL_CTX_free(ctx);
1964    return 0;
1965 }
1966 !
1967
1968       link_check rand_egd 'OpenSSL RAND_egd(3ssl)' \
1969          '#define HAVE_OPENSSL_RAND_EGD' << \!
1970 #include <openssl/rand.h>
1971 int main(void){
1972    return RAND_egd("some.where") > 0;
1973 }
1974 !
1975
1976       if feat_yes SSL_ALL_ALGORITHMS; then
1977          if link_check ssl_all_algo 'OpenSSL all-algorithms support' \
1978             '#define HAVE_SSL_ALL_ALGORITHMS' << \!
1979 #include <openssl/evp.h>
1980 int main(void){
1981    OpenSSL_add_all_algorithms();
1982    EVP_get_cipherbyname("two cents i never exist");
1983    EVP_cleanup();
1984    return 0;
1985 }
1986 !
1987          then
1988             :
1989          else
1990             feat_bail_required SSL_ALL_ALGORITHMS
1991          fi
1992       fi # SSL_ALL_ALGORITHMS
1993
1994       if feat_yes MD5 && feat_no NOEXTMD5; then
1995          run_check openssl_md5 'MD5 digest in OpenSSL' \
1996             '#define HAVE_OPENSSL_MD5' << \!
1997 #include <stdlib.h>
1998 #include <string.h>
1999 #include <openssl/md5.h>
2000 int main(void){
2001    char const dat[] = "abrakadabrafidibus";
2002    char dig[16], hex[16 * 2];
2003    MD5_CTX ctx;
2004    size_t i, j;
2005
2006    memset(dig, 0, sizeof(dig));
2007    memset(hex, 0, sizeof(hex));
2008    MD5_Init(&ctx);
2009    MD5_Update(&ctx, dat, sizeof(dat) - 1);
2010    MD5_Final(dig, &ctx);
2011
2012 #define hexchar(n) ((n) > 9 ? (n) - 10 + 'a' : (n) + '0')
2013    for(i = 0; i < sizeof(hex) / 2; i++){
2014       j = i << 1;
2015       hex[j] = hexchar((dig[i] & 0xf0) >> 4);
2016       hex[++j] = hexchar(dig[i] & 0x0f);
2017    }
2018    return !!memcmp("6d7d0a3d949da2e96f2aa010f65d8326", hex, sizeof(hex));
2019 }
2020 !
2021       fi # feat_yes MD5 && feat_no NOEXTMD5
2022    fi
2023 else
2024    echo '/* WANT_SSL=0 */' >> ${h}
2025 fi # feat_yes SSL
2026
2027 if feat_yes SMTP; then
2028    echo '#define HAVE_SMTP' >> ${h}
2029 else
2030    echo '/* WANT_SMTP=0 */' >> ${h}
2031 fi
2032
2033 if feat_yes POP3; then
2034    echo '#define HAVE_POP3' >> ${h}
2035 else
2036    echo '/* WANT_POP3=0 */' >> ${h}
2037 fi
2038
2039 if feat_yes GSSAPI; then
2040    ${cat} > ${tmp2}.c << \!
2041 #include <gssapi/gssapi.h>
2042 int main(void){
2043    gss_import_name(0, 0, GSS_C_NT_HOSTBASED_SERVICE, 0);
2044    gss_init_sec_context(0,0,0,0,0,0,0,0,0,0,0,0,0);
2045    return 0;
2046 }
2047 !
2048    ${sed} -e '1s/gssapi\///' < ${tmp2}.c > ${tmp3}.c
2049
2050    if command -v krb5-config >/dev/null 2>&1; then
2051       i=`command -v krb5-config`
2052       GSS_LIBS="`CFLAGS= ${i} --libs gssapi`"
2053       GSS_INCS="`CFLAGS= ${i} --cflags`"
2054       i='GSS-API via krb5-config(1)'
2055    else
2056       GSS_LIBS='-lgssapi'
2057       GSS_INCS=
2058       i='GSS-API in gssapi/gssapi.h, libgssapi'
2059    fi
2060    if < ${tmp2}.c link_check gss \
2061          "${i}" '#define HAVE_GSSAPI' "${GSS_LIBS}" "${GSS_INCS}" ||\
2062       < ${tmp3}.c link_check gss \
2063          'GSS-API in gssapi.h, libgssapi' \
2064          '#define HAVE_GSSAPI
2065          #define GSSAPI_REG_INCLUDE' \
2066          '-lgssapi' ||\
2067       < ${tmp2}.c link_check gss 'GSS-API in libgssapi_krb5' \
2068          '#define HAVE_GSSAPI' \
2069          '-lgssapi_krb5' ||\
2070       < ${tmp3}.c link_check gss \
2071          'GSS-API in libgssapi, OpenBSD-style (pre 5.3)' \
2072          '#define HAVE_GSSAPI
2073          #define GSS_REG_INCLUDE' \
2074          '-lgssapi -lkrb5 -lcrypto' \
2075          '-I/usr/include/kerberosV' ||\
2076       < ${tmp2}.c link_check gss 'GSS-API in libgss' \
2077          '#define HAVE_GSSAPI' \
2078          '-lgss' ||\
2079       link_check gss 'GSS-API in libgssapi_krb5, old-style' \
2080          '#define HAVE_GSSAPI
2081          #define GSSAPI_OLD_STYLE' \
2082          '-lgssapi_krb5' << \!
2083 #include <gssapi/gssapi.h>
2084 #include <gssapi/gssapi_generic.h>
2085 int main(void){
2086    gss_import_name(0, 0, gss_nt_service_name, 0);
2087    gss_init_sec_context(0,0,0,0,0,0,0,0,0,0,0,0,0);
2088    return 0;
2089 }
2090 !
2091    then
2092       :
2093    else
2094       feat_bail_required GSSAPI
2095    fi
2096 else
2097    echo '/* WANT_GSSAPI=0 */' >> ${h}
2098 fi # feat_yes GSSAPI
2099
2100 if feat_yes NETRC; then
2101    echo '#define HAVE_NETRC' >> ${h}
2102 else
2103    echo '/* WANT_NETRC=0 */' >> ${h}
2104 fi
2105
2106 if feat_yes AGENT; then
2107    echo '#define HAVE_AGENT' >> ${h}
2108 else
2109    echo '/* WANT_AGENT=0 */' >> ${h}
2110 fi
2111
2112 if feat_yes IDNA; then
2113    if link_check idna 'GNU Libidn' '#define HAVE_IDNA HAVE_IDNA_LIBIDNA' \
2114          '-lidn' << \!
2115 #include <idna.h>
2116 #include <idn-free.h>
2117 #include <stringprep.h>
2118 int main(void){
2119    char *utf8, *idna_ascii, *idna_utf8;
2120
2121    utf8 = stringprep_locale_to_utf8("does.this.work");
2122    if (idna_to_ascii_8z(utf8, &idna_ascii, IDNA_USE_STD3_ASCII_RULES)
2123          != IDNA_SUCCESS)
2124       return 1;
2125    idn_free(idna_ascii);
2126    /* (Rather link check only here) */
2127    idna_utf8 = stringprep_convert(idna_ascii, "UTF-8", "de_DE");
2128    return 0;
2129 }
2130 !
2131    then
2132       :
2133    elif link_check idna 'idnkit' '#define HAVE_IDNA HAVE_IDNA_IDNKIT' \
2134          '-lidnkit' << \!
2135 #include <stdio.h>
2136 #include <idn/api.h>
2137 #include <idn/result.h>
2138 int main(void){
2139    idn_result_t r;
2140    char ace_name[256];
2141    char local_name[256];
2142
2143    r = idn_encodename(IDN_ENCODE_APP, "does.this.work", ace_name,
2144          sizeof(ace_name));
2145    if (r != idn_success) {
2146       fprintf(stderr, "idn_encodename failed: %s\n", idn_result_tostring(r));
2147       return 1;
2148    }
2149    r = idn_decodename(IDN_DECODE_APP, ace_name, local_name, sizeof(local_name));
2150    if (r != idn_success) {
2151       fprintf(stderr, "idn_decodename failed: %s\n", idn_result_tostring(r));
2152       return 1;
2153    }
2154    return 0;
2155 }
2156 !
2157    then
2158       :
2159    else
2160       feat_bail_required IDNA
2161    fi
2162
2163    if [ -n "${have_idna}" ]; then
2164       echo '#define HAVE_IDNA_LIBIDNA 0' >> ${h}
2165       echo '#define HAVE_IDNA_IDNKIT 1' >> ${h}
2166    fi
2167 else
2168    echo '/* WANT_IDNA=0 */' >> ${h}
2169 fi
2170
2171 if feat_yes IMAP_SEARCH; then
2172    echo '#define HAVE_IMAP_SEARCH' >> ${h}
2173 else
2174    echo '/* WANT_IMAP_SEARCH=0 */' >> ${h}
2175 fi
2176
2177 if feat_yes REGEX; then
2178    if link_check regex 'regular expressions' '#define HAVE_REGEX' << \!
2179 #include <regex.h>
2180 #include <stdlib.h>
2181 int main(void){
2182    int status;
2183    regex_t re;
2184
2185    if (regcomp(&re, ".*bsd", REG_EXTENDED | REG_ICASE | REG_NOSUB) != 0)
2186       return 1;
2187    status = regexec(&re, "plan9", 0,NULL, 0);
2188    regfree(&re);
2189    return !(status == REG_NOMATCH);
2190 }
2191 !
2192    then
2193       :
2194    else
2195       feat_bail_required REGEX
2196    fi
2197 else
2198    echo '/* WANT_REGEX=0 */' >> ${h}
2199 fi
2200
2201 if feat_yes READLINE; then
2202    __edrdlib() {
2203       link_check readline "for readline(3) (${1})" \
2204          '#define HAVE_READLINE' "${1}" << \!
2205 #include <stdio.h>
2206 #include <readline/history.h>
2207 #include <readline/readline.h>
2208 int main(void){
2209    char *rl;
2210    HISTORY_STATE *hs;
2211    HIST_ENTRY **he;
2212    int i;
2213
2214    using_history();
2215    read_history("");
2216    stifle_history(242);
2217    rl = readline("Enter a line:");
2218    if (rl && *rl)
2219       add_history(rl);
2220    write_history("");
2221    rl_extend_line_buffer(10);
2222    rl_point = rl_end = 10;
2223    rl_pre_input_hook = (rl_hook_func_t*)NULL;
2224    rl_forced_update_display();
2225    clear_history();
2226    hs = history_get_history_state();
2227    i = hs->length;
2228    he = history_list();
2229    if (i > 0)
2230       rl = he[0]->line;
2231    rl_free_line_state();
2232    rl_cleanup_after_signal();
2233    rl_reset_after_signal();
2234    return 0;
2235 }
2236 !
2237    }
2238
2239    __edrdlib -lreadline ||
2240       __edrdlib '-lreadline -ltermcap' || feat_bail_required READLINE
2241 fi
2242
2243 if feat_yes MLE && [ -z "${have_readline}" ] &&
2244       [ -n "${have_c90amend1}" ]; then
2245    have_mle=1
2246    echo '#define HAVE_MLE' >> ${h}
2247 else
2248    feat_bail_required MLE
2249    echo '/* WANT_{READLINE,MLE}=0 */' >> ${h}
2250 fi
2251
2252 # Generic have-a-line-editor switch for those who need it below
2253 if [ -n "${have_mle}" ] ||
2254       [ -n "${have_readline}" ]; then
2255    have_cle=1
2256 fi
2257
2258 if [ -n "${have_cle}" ] && feat_yes HISTORY; then
2259    echo '#define HAVE_HISTORY' >> ${h}
2260 else
2261    echo '/* WANT_HISTORY=0 */' >> ${h}
2262 fi
2263
2264 if [ -n "${have_mle}" ] && feat_yes KEY_BINDINGS; then
2265    echo '#define HAVE_KEY_BINDINGS' >> ${h}
2266 else
2267    echo '/* WANT_KEY_BINDINGS=0 */' >> ${h}
2268 fi
2269
2270 if feat_yes TERMCAP; then
2271    __termcaplib() {
2272       link_check termcap "termcap(5) (via ${4})" \
2273          "#define HAVE_TERMCAP${3}" "${1}" << _EOT
2274 #include <stdio.h>
2275 #include <stdlib.h>
2276 ${2}
2277 #include <term.h>
2278 #define UNCONST(P) ((void*)(unsigned long)(void const*)(P))
2279 static int my_putc(int c){return putchar(c);}
2280 int main(void){
2281    char buf[1024+512], cmdbuf[2048], *cpb, *r1;
2282    int r2 = OK, r3 = ERR;
2283
2284    tgetent(buf, getenv("TERM"));
2285    cpb = cmdbuf;
2286    r1 = tgetstr(UNCONST("cm"), &cpb);
2287    tgoto(r1, 1, 1);
2288    r2 = tgetnum(UNCONST("Co"));
2289    r3 = tgetflag(UNCONST("ut"));
2290    tputs("cr", 1, &my_putc);
2291    return (r1 == NULL || r2 == -1 || r3 == 0);
2292 }
2293 _EOT
2294    }
2295
2296    __terminfolib() {
2297       link_check terminfo "terminfo(5) (via ${2})" \
2298          '#define HAVE_TERMCAP
2299          #define HAVE_TERMCAP_CURSES
2300          #define HAVE_TERMINFO' "${1}" << _EOT
2301 #include <stdio.h>
2302 #include <curses.h>
2303 #include <term.h>
2304 #define UNCONST(P) ((void*)(unsigned long)(void const*)(P))
2305 static int my_putc(int c){return putchar(c);}
2306 int main(void){
2307    int er, r0, r1, r2;
2308    char *r3, *tp;
2309
2310    er = OK;
2311    r0 = setupterm(NULL, 1, &er);
2312    r1 = tigetflag(UNCONST("bce"));
2313    r2 = tigetnum(UNCONST("colors"));
2314    r3 = tigetstr(UNCONST("cr"));
2315    tp = tparm(r3, NULL);
2316    tputs(tp, 1, &my_putc);
2317    return (r0 == ERR || r1 == -1 || r2 == -2 || r2 == -1 ||
2318       r3 == (char*)-1 || r3 == NULL);
2319 }
2320 _EOT
2321    }
2322
2323    if feat_yes TERMCAP_PREFER_TERMINFO; then
2324       __terminfolib -ltinfo -ltinfo ||
2325          __terminfolib -lcurses -lcurses ||
2326          __terminfolib -lcursesw -lcursesw ||
2327          feat_bail_required TERMCAP_PREFER_TERMINFO
2328    fi
2329
2330    if [ -z "${have_terminfo}" ]; then
2331       __termcaplib -ltermcap '' '' '-ltermcap' ||
2332          __termcaplib -ltermcap '#include <curses.h>' '
2333             #define HAVE_TERMCAP_CURSES' \
2334             'curses.h / -ltermcap' ||
2335          __termcaplib -lcurses '#include <curses.h>' '
2336             #define HAVE_TERMCAP_CURSES' \
2337             'curses.h / -lcurses' ||
2338          __termcaplib -lcursesw '#include <curses.h>' '
2339             #define HAVE_TERMCAP_CURSES' \
2340             'curses.h / -lcursesw' ||
2341          feat_bail_required TERMCAP
2342
2343       if [ -n "${have_termcap}" ]; then
2344          run_check tgetent_null \
2345             "tgetent(3) of termcap(5) takes NULL buffer" \
2346             "#define HAVE_TGETENT_NULL_BUF" << _EOT
2347 #include <stdio.h> /* For C89 NULL */
2348 #include <stdlib.h>
2349 #ifdef HAVE_TERMCAP_CURSES
2350 # include <curses.h>
2351 #endif
2352 #include <term.h>
2353 int main(void){
2354    tgetent(NULL, getenv("TERM"));
2355    return 0;
2356 }
2357 _EOT
2358       fi
2359    fi
2360 else
2361    echo '/* WANT_TERMCAP=0 */' >> ${h}
2362    echo '/* WANT_TERMCAP_PREFER_TERMINFO=0 */' >> ${h}
2363 fi
2364
2365 if feat_yes SPAM_SPAMC; then
2366    echo '#define HAVE_SPAM_SPAMC' >> ${h}
2367    if command -v spamc >/dev/null 2>&1; then
2368       echo "#define SPAM_SPAMC_PATH \"`command -v spamc`\"" >> ${h}
2369    fi
2370 else
2371    echo '/* WANT_SPAM_SPAMC=0 */' >> ${h}
2372 fi
2373
2374 if feat_yes SPAM_SPAMD && [ -n "${have_af_unix}" ]; then
2375    echo '#define HAVE_SPAM_SPAMD' >> ${h}
2376 else
2377    feat_bail_required SPAM_SPAMD
2378    echo '/* WANT_SPAM_SPAMD=0 */' >> ${h}
2379 fi
2380
2381 feat_def SPAM_FILTER
2382
2383 if feat_yes SPAM_SPAMC || feat_yes SPAM_SPAMD || feat_yes SPAM_FILTER; then
2384    echo '#define HAVE_SPAM' >> ${h}
2385 else
2386    echo '/* HAVE_SPAM */' >> ${h}
2387 fi
2388
2389 if feat_yes QUOTE_FOLD &&\
2390       [ -n "${have_c90amend1}" ] && [ -n "${have_wcwidth}" ]; then
2391    echo '#define HAVE_QUOTE_FOLD' >> ${h}
2392 else
2393    feat_bail_required QUOTE_FOLD
2394    echo '/* WANT_QUOTE_FOLD=0 */' >> ${h}
2395 fi
2396
2397 feat_def FILTER_HTML_TAGSOUP
2398 feat_def COLOUR
2399 feat_def DOTLOCK
2400 feat_def MD5
2401 feat_def NOMEMDBG
2402
2403 ## Summarizing
2404
2405 ${rm} -f ${tmp}
2406 squeeze_em ${inc} ${tmp}
2407 ${mv} ${tmp} ${inc}
2408 squeeze_em ${lib} ${tmp}
2409 ${mv} ${tmp} ${lib}
2410
2411 # config.h
2412 ${mv} ${h} ${tmp}
2413 printf '#ifndef n_CONFIG_H\n# define n_CONFIG_H 1\n' > ${h}
2414 ${cat} ${tmp} >> ${h}
2415 ${rm} -f ${tmp}
2416
2417 printf '\n/* The "feature string" */\n' >> ${h}
2418 printf '# if defined _ACCMACVAR_SOURCE || defined HAVE_AMALGAMATION\n' >> ${h}
2419 printf 'static char const _features[] = "MIME"\n' >> ${h}
2420 printf '# ifdef HAVE_SETLOCALE\n   ",LOCALES"\n# endif\n' >> ${h}
2421 printf '# ifdef HAVE_C90AMEND1\n   ",MULTIBYTE CHARSETS"\n# endif\n' >> ${h}
2422 printf '# ifdef HAVE_NL_LANGINFO\n   ",TERMINAL CHARSET"\n# endif\n' >> ${h}
2423 printf '# ifdef HAVE_ICONV\n   ",ICONV"\n# endif\n' >> ${h}
2424 printf '# ifdef HAVE_SOCKETS\n   ",NETWORK"\n# endif\n' >> ${h}
2425 printf '# ifdef HAVE_SSL\n   ",S/MIME,SSL/TLS"\n# endif\n' >> ${h}
2426 printf '# ifdef HAVE_SSL_ALL_ALGORITHMS\n   ",SSL-ALL-ALGORITHMS"\n# endif\n'\
2427    >> ${h}
2428 printf '# ifdef HAVE_SMTP\n   ",SMTP"\n# endif\n' >> ${h}
2429 printf '# ifdef HAVE_POP3\n   ",POP3"\n# endif\n' >> ${h}
2430 printf '# ifdef HAVE_GSSAPI\n   ",GSS-API"\n# endif\n' >> ${h}
2431 printf '# ifdef HAVE_MD5\n   ",MD5 [APOP,CRAM-MD5]"\n# endif\n' >> ${h}
2432 printf '# ifdef HAVE_NETRC\n   ",NETRC"\n# endif\n' >> ${h}
2433 printf '# ifdef HAVE_IDNA\n   ",IDNA"\n# endif\n' >> ${h}
2434 printf '# ifdef HAVE_IMAP_SEARCH\n   ",IMAP-SEARCH"\n# endif\n' >> ${h}
2435 printf '# ifdef HAVE_REGEX\n   ",REGEX"\n# endif\n' >> ${h}
2436 printf '# ifdef HAVE_READLINE\n   ",READLINE"\n# endif\n' >> ${h}
2437 printf '# ifdef HAVE_MLE\n   ",MLE"\n# endif\n' >> ${h}
2438   printf '# ifdef HAVE_WCWIDTH\n   " (WIDE GLYPHS)"\n# endif\n' >> ${h}
2439 printf '# ifdef HAVE_HISTORY\n   ",HISTORY"\n# endif\n' >> ${h}
2440 printf '# ifdef HAVE_KEY_BINDINGS\n   ",KEY-BINDINGS"\n# endif\n' >> ${h}
2441 printf '# ifdef HAVE_TERMCAP\n   ",TERMCAP"\n# endif\n' >> ${h}
2442   printf '# ifdef HAVE_TERMINFO\n   " (terminfo(5))"\n# endif\n' >> ${h}
2443 printf '# ifdef HAVE_SPAM_SPAMC\n   ",SPAMC"\n# endif\n' >> ${h}
2444 printf '# ifdef HAVE_SPAM_SPAMD\n   ",SPAMD"\n# endif\n' >> ${h}
2445 printf '# ifdef HAVE_SPAM_FILTER\n   ",SPAMFILTER"\n# endif\n' >> ${h}
2446 printf '# ifdef HAVE_DOCSTRINGS\n   ",DOCSTRINGS"\n# endif\n' >> ${h}
2447 printf '# ifdef HAVE_QUOTE_FOLD\n   ",QUOTE-FOLD"\n# endif\n' >> ${h}
2448 printf '# ifdef HAVE_FILTER_HTML_TAGSOUP\n   ",HTML-FILTER"\n# endif\n' >> ${h}
2449 printf '# ifdef HAVE_COLOUR\n   ",COLOUR"\n# endif\n' >> ${h}
2450 printf '# ifdef HAVE_DOTLOCK\n   ",DOTLOCK-FILES"\n# endif\n' >> ${h}
2451 printf '# ifdef HAVE_DEBUG\n   ",DEBUG"\n# endif\n' >> ${h}
2452 printf '# ifdef HAVE_DEVEL\n   ",DEVEL"\n# endif\n' >> ${h}
2453 printf '# ifdef HAVE_CROSS_BUILD\n   ",CROSS-BUILD"\n# endif\n' >> ${h}
2454 printf ';\n# endif /* _ACCMACVAR_SOURCE || HAVE_AMALGAMATION */\n' >> ${h}
2455
2456 # Create the real mk.mk
2457 # Note we cannout use explicit ./ filename prefix for source and object
2458 # pathnames because of a bug in bmake(1)
2459 ${rm} -rf ${tmp0}.* ${tmp0}*
2460 printf 'OBJ_SRC = ' >> ${mk}
2461 if feat_no AMALGAMATION; then
2462    for i in `printf '%s\n' *.c | ${sort}`; do
2463       if [ "${i}" = privsep.c ]; then
2464          continue
2465       fi
2466       printf "${i} " >> ${mk}
2467    done
2468    printf '\nAMALGAM_TARGET =\nAMALGAM_DEP =\n' >> ${mk}
2469 else
2470    printf 'main.c\nAMALGAM_TARGET = main.o\nAMALGAM_DEP = ' >> ${mk}
2471
2472    printf '\n/* HAVE_AMALGAMATION: include sources */\n' >> ${h}
2473    printf '#elif _CONFIG_H + 0 == 1\n' >> ${h}
2474    printf '# undef _CONFIG_H\n' >> ${h}
2475    printf '# define _CONFIG_H 2\n' >> ${h}
2476    for i in `printf '%s\n' *.c | ${sort}`; do
2477       if [ "${i}" = "${j}" ] || [ "${i}" = main.c ] || \
2478             [ "${i}" = privsep.c ]; then
2479          continue
2480       fi
2481       printf "${i} " >> ${mk}
2482       printf "# include \"${i}\"\n" >> ${h}
2483    done
2484    echo >> ${mk}
2485    # tcc(1) fails on 2015-11-13 unless this #else clause existed
2486    echo '#else' >> ${h}
2487 fi
2488
2489 printf '#endif /* n_CONFIG_H */\n' >> ${h}
2490
2491 echo "LIBS = `${cat} ${lib}`" >> ${mk}
2492 echo "INCS = `${cat} ${inc}`" >> ${mk}
2493 echo >> ${mk}
2494 ${cat} ./mk-mk.in >> ${mk}
2495
2496 ## Finished!
2497
2498 ${cat} > ${tmp2}.c << \!
2499 #include "config.h"
2500 :
2501 :The following optional features are enabled:
2502 #ifdef HAVE_SETLOCALE
2503 : + Locale support: Printable characters depend on the environment
2504 # ifdef HAVE_C90AMEND1
2505 : + Multibyte character support
2506 # endif
2507 # ifdef HAVE_NL_LANGINFO
2508 : + Automatic detection of terminal character set
2509 # endif
2510 #endif
2511 #ifdef HAVE_ICONV
2512 : + Character set conversion using iconv()
2513 #endif
2514 #ifdef HAVE_SOCKETS
2515 : + Network support
2516 #endif
2517 #ifdef HAVE_SSL
2518 # ifdef HAVE_OPENSSL
2519 : + S/MIME and SSL/TLS (OpenSSL)
2520 # endif
2521 # ifdef HAVE_SSL_ALL_ALGORITHMS
2522 : + + Support for more ("all") digest and cipher algorithms
2523 # endif
2524 #endif
2525 #ifdef HAVE_SMTP
2526 : + SMTP protocol
2527 #endif
2528 #ifdef HAVE_POP3
2529 : + POP3 protocol
2530 #endif
2531 #ifdef HAVE_GSSAPI
2532 : + GSS-API authentication
2533 #endif
2534 #ifdef HAVE_MD5
2535 : + MD5 message digest (APOP, CRAM-MD5)
2536 #endif
2537 #ifdef HAVE_NETRC
2538 : + .netrc file support
2539 #endif
2540 #ifdef HAVE_IDNA
2541 : + IDNA (internationalized domain names for applications) support
2542 #endif
2543 #ifdef HAVE_IMAP_SEARCH
2544 : + IMAP-style search expressions
2545 #endif
2546 #ifdef HAVE_REGEX
2547 : + Regular expression support (searches, conditional expressions etc.)
2548 #endif
2549 #if defined HAVE_READLINE || defined HAVE_MLE
2550 # ifdef HAVE_READLINE
2551 : + Command line editing via readline(3)
2552 # else
2553 #  ifdef HAVE_WCWIDTH
2554 : + Command line editing via M(ailx)-L(ine)-E(ditor) (wide glyph support)
2555 #  else
2556 : + Command line editing via M(ailx)-L(ine)-E(ditor) (no wide glyph support)
2557 #  endif
2558 # endif
2559 # ifdef HAVE_HISTORY
2560 : + + History management
2561 # endif
2562 # ifdef HAVE_KEY_BINDINGS
2563 : + + Configurable key bindings
2564 # endif
2565 #endif
2566 #ifdef HAVE_TERMCAP
2567 # ifdef HAVE_TERMINFO
2568 : + Terminal capability queries (terminfo(5))
2569 # else
2570 : + Terminal capability queries (termcap(5))
2571 # endif
2572 #endif
2573 #ifdef HAVE_SPAM
2574 : + Spam management
2575 # ifdef HAVE_SPAM_SPAMC
2576 : + + Via spamc(1) (of spamassassin(1))
2577 # endif
2578 # ifdef HAVE_SPAM_SPAMD
2579 : + + Directly via spamd(1) (of spamassassin(1))
2580 # endif
2581 # ifdef HAVE_SPAM_FILTER
2582 : + + Via freely configurable *spam-filter-XY*s
2583 # endif
2584 #endif
2585 #ifdef HAVE_DOCSTRINGS
2586 : + Documentation summary strings
2587 #endif
2588 #ifdef HAVE_QUOTE_FOLD
2589 : + Extended *quote-fold*ing
2590 #endif
2591 #ifdef HAVE_FILTER_HTML_TAGSOUP
2592 : + Builtin HTML-to-text filter (for display purposes, primitive)
2593 #endif
2594 #ifdef HAVE_COLOUR
2595 : + Coloured message display (simple)
2596 #endif
2597 #ifdef HAVE_DOTLOCK
2598 : + Dotlock files and privilege-separated file dotlock program
2599 #endif
2600 :
2601 :The following optional features are disabled:
2602 #ifndef HAVE_SETLOCALE
2603 : - Locale support: Only ASCII characters are recognized
2604 #endif
2605 # ifndef HAVE_C90AMEND1
2606 : - Multibyte character support
2607 # endif
2608 # ifndef HAVE_NL_LANGINFO
2609 : - Automatic detection of terminal character set
2610 # endif
2611 #ifndef HAVE_ICONV
2612 : - Character set conversion using iconv()
2613 : _ (Ooooh, no iconv(3), NO character set conversion possible!  Really...)
2614 #endif
2615 #ifndef HAVE_SOCKETS
2616 : - Network support
2617 #endif
2618 #ifndef HAVE_SSL
2619 : - S/MIME and SSL/TLS
2620 #else
2621 # ifndef HAVE_SSL_ALL_ALGORITHMS
2622 : - Support for more S/MIME and SSL/TLS digest and cipher algorithms
2623 # endif
2624 #endif
2625 #ifndef HAVE_SMTP
2626 : - SMTP protocol
2627 #endif
2628 #ifndef HAVE_POP3
2629 : - POP3 protocol
2630 #endif
2631 #ifndef HAVE_GSSAPI
2632 : - GSS-API authentication
2633 #endif
2634 #ifndef HAVE_MD5
2635 : - MD5 message digest (APOP, CRAM-MD5)
2636 #endif
2637 #ifndef HAVE_NETRC
2638 : - .netrc file support
2639 #endif
2640 #ifndef HAVE_IDNA
2641 : - IDNA (internationalized domain names for applications) support
2642 #endif
2643 #ifndef HAVE_IMAP_SEARCH
2644 : - IMAP-style search expressions
2645 #endif
2646 #ifndef HAVE_REGEX
2647 : - Regular expression support
2648 #endif
2649 #if !defined HAVE_READLINE && !defined HAVE_MLE
2650 : - Command line editing and history
2651 #else
2652 # ifndef HAVE_HISTORY
2653 : + (Command line editing) - History management
2654 # endif
2655 # ifndef HAVE_KEY_BINDINGS
2656 : + (Command line editing) - Configurable key bindings
2657 # endif
2658 #endif
2659 #ifndef HAVE_TERMCAP
2660 : - Terminal capability queries
2661 #endif
2662 #ifndef HAVE_SPAM
2663 : - Spam management
2664 #endif
2665 #ifndef HAVE_DOCSTRINGS
2666 : - Documentation summary strings
2667 #endif
2668 #ifndef HAVE_QUOTE_FOLD
2669 : - Extended *quote-fold*ing
2670 #endif
2671 #ifndef HAVE_FILTER_HTML_TAGSOUP
2672 : - Builtin HTML-to-text filter (for display purposes, primitive)
2673 #endif
2674 #ifndef HAVE_COLOUR
2675 : - Coloured message display (simple)
2676 #endif
2677 #ifndef HAVE_DOTLOCK
2678 : - Dotlock files and privilege-separated file dotlock program
2679 #endif
2680 :
2681 #if !defined HAVE_FNMATCH || !defined HAVE_FCHDIR ||\
2682       defined HAVE_DEBUG || defined HAVE_DEVEL
2683 :Remarks:
2684 # ifndef HAVE_FNMATCH
2685 : . The function fnmatch(3) could not be found.
2686 : _ Filename patterns like wildcard are not supported on your system.
2687 # endif
2688 # ifndef HAVE_FCHDIR
2689 : . The function fchdir(2) could not be found. We will use chdir(2)
2690 : _ instead. This is not a problem unless the current working
2691 : _ directory is changed while this program is inside of it.
2692 # endif
2693 # ifdef HAVE_DEBUG
2694 : . Debug enabled binary: not meant to be used by end-users: THANKS!
2695 # endif
2696 # ifdef HAVE_DEVEL
2697 : . Computers do not blunder.
2698 # endif
2699 :
2700 #endif /* Remarks */
2701 :Setup:
2702 : . System-wide resource file: SYSCONFDIR/SYSCONFRC
2703 : . bindir: BINDIR
2704 #ifdef HAVE_DOTLOCK
2705 : . libexecdir: LIBEXECDIR
2706 #endif
2707 : . mandir: MANDIR
2708 : . sendmail(1): VAL_SENDMAIL (argv[0] = VAL_SENDMAIL_PROGNAME)
2709 : . Mail spool directory: MAILSPOOL
2710 :
2711 !
2712
2713 ${make} -f ${makefile} ${tmp2}.x
2714 < ${tmp2}.x ${sed} -e '/^[^:]/d; /^$/d; s/^://' |
2715 while read l; do
2716    msg "${l}"
2717 done
2718
2719 # s-it-mode