make-config.sh

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