mk-conf.sh

   1 #!/bin/sh -
   2 #@ Please see `INSTALL' and `conf.rc' instead.
   3
   4 LC_ALL=C
   5 export LC_ALL
   6
   7 # Predefined CONFIG= urations take precedence over anything else
   8 if [ -n "${CONFIG}" ]; then
   9    case ${CONFIG} in
  10    MINIMAL)
  11       WANT_SOCKETS=0
  12       WANT_IDNA=0
  13       WANT_READLINE=0 WANT_EDITLINE=0 WANT_NCL=0
  14       WANT_IMAP_SEARCH=0
  15       WANT_REGEX=0
  16       WANT_SPAM=0
  17       WANT_DOCSTRINGS=0
  18       WANT_QUOTE_FOLD=0
  19       WANT_COLOUR=0
  20       ;;
  21    MEDIUM)
  22       WANT_SOCKETS=0
  23       WANT_IDNA=0
  24       WANT_READLINE=0 WANT_EDITLINE=0
  25       WANT_IMAP_SEARCH=0
  26       WANT_SPAM=0
  27       WANT_QUOTE_FOLD=0
  28       WANT_COLOUR=0
  29       ;;
  30    NETSEND)
  31       WANT_IMAP=0
  32       WANT_POP3=0
  33       WANT_READLINE=0 WANT_EDITLINE=0
  34       WANT_IMAP_SEARCH=0
  35       WANT_SPAM=0
  36       WANT_QUOTE_FOLD=0
  37       WANT_COLOUR=0
  38       ;;
  39    MAXIMAL)
  40       WANT_GSSAPI=1
  41       ;;
  42    *)
  43       echo >&2 "Unknown CONFIG= setting: ${CONFIG}"
  44       echo >&2 'Possible values: MINIMAL, MEDIUM, NETSEND, MAXIMAL'
  45       exit 1
  46    esac
  47 fi
  48
  49 # Inter-relationships
  50 option_update() {
  51    if nwantfeat SOCKETS; then
  52       WANT_IPV6=0 WANT_SSL=0
  53       WANT_IMAP=0 WANT_POP3=0 WANT_SMTP=0 WANT_NETRC=0 WANT_GSSAPI=0
  54    fi
  55    if nwantfeat IMAP && nwantfeat POP3 && nwantfeat SMTP; then
  56       WANT_SOCKETS=0 WANT_IPV6=0 WANT_SSL=0 WANT_NETRC=0
  57    fi
  58    if nwantfeat IMAP && nwantfeat SMTP; then
  59       WANT_GSSAPI=0
  60    fi
  61    # If we don't need MD5 except for producing boundary and message-id strings,
  62    # leave it off, plain old srand(3) should be enough for that purpose.
  63    if nwantfeat SOCKETS; then
  64       WANT_MD5=0
  65    fi
  66    if wantfeat DEBUG; then
  67       WANT_NOALLOCA=1 WANT_DEVEL=1
  68    fi
  69 }
  70
  71 # Check out compiler ($CC) and -flags ($CFLAGS)
  72 compiler_flags() {
  73    # $CC is overwritten when empty or a default "cc", even without WANT_AUTOCC
  74    optim= dbgoptim= _CFLAGS=
  75    if [ -z "${CC}" ] || [ "${CC}" = cc ]; then
  76       if { CC="`command -v clang`"; }; then
  77          :
  78       elif { CC="`command -v gcc`"; }; then
  79          :
  80       elif { CC="`command -v c89`"; }; then
  81          [ "`uname -s`" = UnixWare ] && _CFLAGS=-v optim=-O dbgoptim=
  82       elif { CC="`command -v c99`"; }; then
  83          :
  84       else
  85          echo >&2 'ERROR'
  86          echo >&2 ' I cannot find a compiler!'
  87          echo >&2 ' Neither of clang(1), gcc(1), c89(1) and c99(1).'
  88          echo >&2 ' Please set the CC environment variable, maybe CFLAGS also.'
  89          exit 1
  90       fi
  91    fi
  92    export CC
  93
  94    ccver=`${CC} --version 2>/dev/null`
  95    stackprot=no
  96    if { i=${ccver}; echo "${i}"; } | ${grep} -q -i -e gcc -e clang; then
  97    #if echo "${i}" | ${grep} -q -i -e gcc -e 'clang version 1'; then
  98       optim=-O2 dbgoptim=-O
  99       stackprot=yes
 100       _CFLAGS="${_CFLAGS} -std=c89 -Wall -Wextra -pedantic"
 101       _CFLAGS="${_CFLAGS} -fno-unwind-tables -fno-asynchronous-unwind-tables"
 102       _CFLAGS="${_CFLAGS} -fstrict-aliasing"
 103       _CFLAGS="${_CFLAGS} -Wbad-function-cast -Wcast-align -Wcast-qual"
 104       _CFLAGS="${_CFLAGS} -Winit-self -Wmissing-prototypes"
 105       _CFLAGS="${_CFLAGS} -Wshadow -Wunused -Wwrite-strings"
 106       _CFLAGS="${_CFLAGS} -Wno-long-long" # ISO C89 has no 'long long'...
 107       if { i=${ccver}; echo "${i}"; } | ${grep} -q -e 'clang version 1'; then
 108          _CFLAGS="${_CFLAGS} -Wstrict-overflow=5"
 109       else
 110          _CFLAGS="${_CFLAGS} -fstrict-overflow -Wstrict-overflow=5"
 111          if wantfeat AMALGAMATION && nwantfeat DEBUG; then
 112             _CFLAGS="${_CFLAGS} -Wno-unused-function"
 113          fi
 114          if { i=${ccver}; echo "${i}"; } | ${grep} -q -i -e clang; then
 115             _CFLAGS="${_CFLAGS} -Wno-unused-result" # TODO handle the right way
 116          fi
 117       fi
 118       if wantfeat AMALGAMATION; then
 119          _CFLAGS="${_CFLAGS} -pipe"
 120       fi
 121 #   elif { i=${ccver}; echo "${i}"; } | ${grep} -q -i -e clang; then
 122 #      optim=-O3 dbgoptim=-O
 123 #      stackprot=yes
 124 #      _CFLAGS='-std=c89 -Weverything -Wno-long-long'
 125 #      if wantfeat AMALGAMATION; then
 126 #         _CFLAGS="${_CFLAGS} -pipe"
 127 #      fi
 128    elif [ -z "${optim}" ]; then
 129       optim=-O1 dbgoptim=-O
 130    fi
 131
 132    if nwantfeat DEBUG; then
 133       _CFLAGS="${optim} -DNDEBUG ${_CFLAGS}"
 134    else
 135       _CFLAGS="${dbgoptim} -g ${_CFLAGS}";
 136       if [ "${stackprot}" = yes ]; then
 137          _CFLAGS="${_CFLAGS} -ftrapv -fstack-protector-all "
 138             _CFLAGS="${_CFLAGS} -Wstack-protector -D_FORTIFY_SOURCE=2"
 139       fi
 140    fi
 141    _CFLAGS="${_CFLAGS} ${ADDCFLAGS}"
 142    # XXX -Wl,-z,relro -Wl,-z,now -Wl,-z,noexecstack: need detection
 143    _LDFLAGS="${_LDFLAGS} ${ADDLDFLAGS}" # XXX -Wl,--sort-common,[-O1]
 144    export _CFLAGS _LDFLAGS
 145
 146    # $CFLAGS and $LDFLAGS are only overwritten if explicitly wanted
 147    if wantfeat AUTOCC; then
 148       CFLAGS=$_CFLAGS
 149       LDFLAGS=$_LDFLAGS
 150       export CFLAGS LDFLAGS
 151    fi
 152 }
 153
 154 ##  --  >8  --  8<  --  ##
 155
 156 ## Notes:
 157 ## - Heirloom sh(1) (and same origin) have problems with ': >' redirection,
 158 ##   so use "printf '' >" instead
 159 ## - Heirloom sh(1) and maybe more execute loops with redirection in a subshell
 160 ##   (but don't export eval's from within), therefore we need to (re)include
 161 ##   variable assignments at toplevel instead (via reading temporary files)
 162
 163 ## First of all, create new configuration and check wether it changed ##
 164
 165 conf=./conf.rc
 166 lst=./config.lst
 167 h=./config.h
 168 mk=./mk.mk
 169
 170 newlst=./config.lst-new
 171 newmk=./config.mk-new
 172 newh=./config.h-new
 173 tmp0=___tmp
 174 tmp=./${tmp0}1$$
 175
 176 # We need some standard utilities
 177 unset -f command
 178 check_tool() {
 179    n=$1 i=$2 opt=${3:-0}
 180    if type "${i}" >/dev/null 2>&1; then
 181       eval ${n}=${i}
 182       return 1
 183    fi
 184    if [ ${opt} -eq 0 ]; then
 185       echo >&2 "ERROR: no trace of the utility \`${n}'"
 186       exit 1
 187    fi
 188    return 0
 189 }
 190
 191 # Check those tools right now that we need before including ${conf}
 192 check_tool rm "${rm:-`command -v rm`}"
 193 check_tool sed "${sed:-`command -v sed`}"
 194
 195 # Only incorporate what wasn't overwritten from command line / CONFIG
 196 trap "${rm} -f ${tmp}; exit" 1 2 15
 197 trap "${rm} -f ${tmp}" 0
 198 ${rm} -f ${tmp}
 199
 200 < ${conf} ${sed} -e '/^[ \t]*#/d' -e '/^$/d' -e 's/[ \t]*$//' |
 201 while read line; do
 202    i="`echo ${line} | ${sed} -e 's/=.*$//'`"
 203    eval j="\$${i}" jx="\${${i}+x}"
 204    if [ -n "${j}" ] || [ "${jx}" = x ]; then
 205       line="${i}=\"${j}\""
 206    fi
 207    echo ${line}
 208 done > ${tmp}
 209 . ./${tmp}
 210
 211 check_tool awk "${awk:-`command -v awk`}"
 212 check_tool cat "${cat:-`command -v cat`}"
 213 check_tool chmod "${chmod:-`command -v chmod`}"
 214 check_tool cp "${cp:-`command -v cp`}"
 215 check_tool cmp "${cmp:-`command -v cmp`}"
 216 check_tool grep "${grep:-`command -v grep`}"
 217 check_tool mkdir "${mkdir:-`command -v mkdir`}"
 218 check_tool mv "${mv:-`command -v mv`}"
 219 # rm(1), sed(1) above
 220 check_tool tee "${tee:-`command -v tee`}"
 221
 222 check_tool make "${MAKE:-`command -v make`}"
 223 check_tool strip "${STRIP:-`command -v strip`}" 1
 224 HAVE_STRIP=${?}
 225
 226 wantfeat() {
 227    eval i=\$WANT_${1}
 228    [ "${i}" = "1" ]
 229 }
 230 nwantfeat() {
 231    eval i=\$WANT_${1}
 232    [ "${i}" != "1" ]
 233 }
 234
 235 option_update
 236
 237 # (No function since some shells loose non-exported variables in traps)
 238 trap "${rm} -f ${tmp} ${newlst} ${newmk} ${newh}; exit" 1 2 15
 239 trap "${rm} -f ${tmp} ${newlst} ${newmk} ${newh}" 0
 240 ${rm} -f ${newlst} ${newmk} ${newh}
 241
 242 # (Could: use FD redirection, add eval(1) and don't re-'. ./${newlst}')
 243 while read line; do
 244    i=`echo ${line} | ${sed} -e 's/=.*$//'`
 245    eval j=\$${i}
 246    if [ -z "${j}" ] || [ "${j}" = 0 ]; then
 247       printf "/*#define ${i}*/\n" >> ${newh}
 248    elif [ "${j}" = 1 ]; then
 249       printf "#define ${i}\n" >> ${newh}
 250    else
 251       printf "#define ${i} \"${j}\"\n" >> ${newh}
 252    fi
 253    printf "${i} = ${j}\n" >> ${newmk}
 254    printf "${i}=\"${j}\"\n"
 255 done < ${tmp} > ${newlst}
 256 . ./${newlst}
 257
 258 printf "#define UAGENT \"${SID}${NAIL}\"\n" >> ${newh}
 259 printf "UAGENT = ${SID}${NAIL}\n" >> ${newmk}
 260
 261 compiler_flags
 262
 263 printf "CC = ${CC}\n" >> ${newmk}
 264 printf "_CFLAGS = ${_CFLAGS}\nCFLAGS = ${CFLAGS}\n" >> ${newmk}
 265 printf "_LDFLAGS = ${_LDFLAGS}\nLDFLAGS = ${LDFLAGS}\n" >> ${newmk}
 266 printf "AWK = ${awk}\nCMP = ${cmp}\nCHMOD = ${chmod}\nCP = ${cp}\n" >> ${newmk}
 267 printf "GREP = ${grep}\nMKDIR = ${mkdir}\nRM = ${rm}\nSED = ${sed}\n" \
 268    >> ${newmk}
 269 printf "STRIP = ${strip}\nHAVE_STRIP = ${HAVE_STRIP}\n" >> ${newmk}
 270 # (We include the cc(1)/ld(1) environment only for update detection..)
 271 printf "CC=\"${CC}\"\n" >> ${newlst}
 272 printf "_CFLAGS=\"${_CFLAGS}\"\nCFLAGS=\"${CFLAGS}\"\n" >> ${newlst}
 273 printf "_LDFLAGS=\"${_LDFLAGS}\"\nLDFLAGS=\"${LDFLAGS}\"\n" >> ${newlst}
 274 printf "AWK=${awk}\nCMP=${cmp}\nCHMOD=${chmod}\nCP=${cp}\n" >> ${newlst}
 275 printf "GREP=${grep}\nMKDIR=${mkdir}\nRM=${rm}\nSED=${sed}\n" >> ${newlst}
 276 printf "STRIP=${strip}\nHAVE_STRIP=${HAVE_STRIP}\n" >> ${newlst}
 277
 278 if [ -f ${lst} ] && ${cmp} ${newlst} ${lst} >/dev/null 2>&1; then
 279    exit 0
 280 fi
 281 [ -f ${lst} ] && echo 'configuration updated..' || echo 'shiny configuration..'
 282
 283 ${mv} -f ${newlst} ${lst}
 284 ${mv} -f ${newh} ${h}
 285 ${mv} -f ${newmk} ${mk}
 286
 287 ## Compile and link checking ##
 288
 289 tmp2=./${tmp0}2$$
 290 tmp3=./${tmp0}3$$
 291 log=./config.log
 292 lib=./config.lib
 293 inc=./config.inc
 294 src=./config.c
 295 makefile=./config.mk
 296
 297 # (No function since some shells loose non-exported variables in traps)
 298 trap "${rm} -f ${lst} ${h} ${mk} ${lib} ${inc} ${src} ${makefile}; exit" 1 2 15
 299 trap "${rm} -rf ${tmp0}.* ${tmp0}* ${makefile}" 0
 300
 301 exec 5>&2 > ${log} 2>&1
 302 printf '' > ${lib}
 303 printf '' > ${inc}
 304 # ${src} is only created if WANT_AMALGAMATION
 305 ${rm} -f ${src}
 306 ${cat} > ${makefile} << \!
 307 .SUFFIXES: .o .c .x .y
 308 .c.o:
 309         $(CC) $(XINCS) -c $<
 310 .c.x:
 311         $(CC) $(XINCS) -E $< >$@
 312 .c:
 313         $(CC) $(XINCS) -o $@ $< $(XLIBS)
 314 .y: ;
 315 !
 316
 317 msg() {
 318    fmt=$1
 319
 320    shift
 321    printf "*** ${fmt}\\n" "${@}"
 322    printf "${fmt}" "${@}" >&5
 323 }
 324
 325 _check_preface() {
 326    variable=$1 topic=$2 define=$3
 327
 328    echo '**********'
 329    msg "checking ${topic} ... "
 330    echo "/* checked ${topic} */" >> ${h}
 331    ${rm} -f ${tmp} ${tmp}.o
 332    echo '*** test program is'
 333    ${tee} ${tmp}.c
 334    #echo '*** the preprocessor generates'
 335    #${make} -f ${makefile} ${tmp}.x
 336    #${cat} ${tmp}.x
 337    echo '*** results are'
 338 }
 339
 340 compile_check() {
 341    variable=$1 topic=$2 define=$3
 342
 343    _check_preface "${variable}" "${topic}" "${define}"
 344
 345    if ${make} -f ${makefile} XINCS="${INCS}" ./${tmp}.o &&
 346          [ -f ./${tmp}.o ]; then
 347       msg "yes\\n"
 348       echo "${define}" >> ${h}
 349       eval have_${variable}=yes
 350       return 0
 351    else
 352       echo "/* ${define} */" >> ${h}
 353       msg "no\\n"
 354       eval unset have_${variable}
 355       return 1
 356    fi
 357 }
 358
 359 _link_mayrun() {
 360    run=$1 variable=$2 topic=$3 define=$4 libs=$5 incs=$6
 361
 362    _check_preface "${variable}" "${topic}" "${define}"
 363
 364    if ${make} -f ${makefile} XINCS="${INCS} ${incs}" \
 365             XLIBS="${LIBS} ${libs}" ./${tmp} &&
 366          [ -f ./${tmp} ] &&
 367          { [ ${run} -eq 0 ] || ./${tmp}; }; then
 368       echo "*** adding INCS<${incs}> LIBS<${libs}>"
 369       msg "yes\\n"
 370       echo "${define}" >> ${h}
 371       LIBS="${LIBS} ${libs}"
 372       echo "${libs}" >> ${lib}
 373       INCS="${INCS} ${incs}"
 374       echo "${incs}" >> ${inc}
 375       eval have_${variable}=yes
 376       return 0
 377    else
 378       msg "no\\n"
 379       echo "/* ${define} */" >> ${h}
 380       eval unset have_${variable}
 381       return 1
 382    fi
 383 }
 384
 385 link_check() {
 386    _link_mayrun 0 "${1}" "${2}" "${3}" "${4}" "${5}"
 387 }
 388
 389 run_check() {
 390    _link_mayrun 1 "${1}" "${2}" "${3}" "${4}" "${5}"
 391 }
 392
 393 # Build a basic set of INCS and LIBS according to user environment.
 394 # On pkgsrc(7) systems automatically add /usr/pkg/*
 395 if [ -n "${C_INCLUDE_PATH}" ]; then
 396    i=${IFS}
 397    IFS=:
 398    set -- ${C_INCLUDE_PATH}
 399    IFS=${i}
 400    # for i; do -- new in POSIX Issue 7 + TC1
 401    for i
 402    do
 403       [ "${i}" = '/usr/pkg/include' ] && continue
 404       INCS="${INCS} -I${i}"
 405    done
 406 fi
 407 [ -d /usr/pkg/include ] && INCS="${INCS} -I/usr/pkg/include"
 408 echo "${INCS}" >> ${inc}
 409
 410 if [ -n "${LD_LIBRARY_PATH}" ]; then
 411    i=${IFS}
 412    IFS=:
 413    set -- ${LD_LIBRARY_PATH}
 414    IFS=${i}
 415    # for i; do -- new in POSIX Issue 7 + TC1
 416    for i
 417    do
 418       [ "${i}" = '/usr/pkg/lib' ] && continue
 419       LIBS="${LIBS} -L${i}"
 420    done
 421 fi
 422 [ -d /usr/pkg/lib ] && LIBS="${LIBS} -L/usr/pkg/lib"
 423 echo "${LIBS}" >> ${lib}
 424
 425 ##
 426
 427 # Better set _GNU_SOURCE (if we are on Linux only?); 'surprised it did without
 428 echo '#define _GNU_SOURCE' >> ${h}
 429
 430 if link_check hello 'if a hello world program can be built' << \!
 431 #include <stdio.h>
 432
 433 int main(int argc, char *argv[])
 434 {
 435    (void)argc;
 436    (void)argv;
 437    puts("hello world");
 438    return 0;
 439 }
 440 !
 441 then
 442    :
 443 else
 444    echo >&5 'This oooops is most certainly not related to me.'
 445    echo >&5 "Read the file ${log} and check your compiler environment."
 446    ${rm} -f ${lst} ${h} ${mk}
 447    exit 1
 448 fi
 449
 450 if link_check termios 'for termios.h and tc*() family' << \!
 451 #include <termios.h>
 452 int main(void)
 453 {
 454    struct termios tios;
 455    tcgetattr(0, &tios);
 456    tcsetattr(0, TCSADRAIN | TCSAFLUSH, &tios);
 457    return 0;
 458 }
 459 !
 460 then
 461    :
 462 else
 463    echo >&5 'We require termios.h and the tc*() family of functions.'
 464    echo >&5 "That much Unix we indulge ourselfs."
 465    ${rm} -f ${lst} ${h} ${mk}
 466    exit 1
 467 fi
 468
 469 link_check setenv 'for setenv()/unsetenv()' '#define HAVE_SETENV' << \!
 470 #include <stdlib.h>
 471 int main(void)
 472 {
 473    setenv("s-nail", "to be made nifty!", 1);
 474    unsetenv("s-nail");
 475    return 0;
 476 }
 477 !
 478
 479 link_check snprintf 'for snprintf()' '#define HAVE_SNPRINTF' << \!
 480 #include <stdio.h>
 481 int main(void)
 482 {
 483    char b[20];
 484    snprintf(b, sizeof b, "%s", "string");
 485    return 0;
 486 }
 487 !
 488
 489 link_check putc_unlocked 'for putc_unlocked()' '#define HAVE_PUTC_UNLOCKED' <<\!
 490 #include <stdio.h>
 491 int main(void)
 492 {
 493    putc_unlocked('@', stdout);
 494    return 0;
 495 }
 496 !
 497
 498 link_check fchdir 'for fchdir()' '#define HAVE_FCHDIR' << \!
 499 #include <unistd.h>
 500 int main(void)
 501 {
 502    fchdir(0);
 503    return 0;
 504 }
 505 !
 506
 507 link_check pipe2 'for pipe2()' '#define HAVE_PIPE2' << \!
 508 #include <fcntl.h>
 509 #include <unistd.h>
 510 int main(void)
 511 {
 512    int fds[2];
 513    pipe2(fds, O_CLOEXEC);
 514    return 0;
 515 }
 516 !
 517
 518 link_check mmap 'for mmap()' '#define HAVE_MMAP' << \!
 519 #include <sys/types.h>
 520 #include <sys/mman.h>
 521 int main(void)
 522 {
 523    mmap(0, 0, 0, 0, 0, 0);
 524    return 0;
 525 }
 526 !
 527
 528 link_check mremap 'for mremap()' '#define HAVE_MREMAP' << \!
 529 #include <sys/types.h>
 530 #include <sys/mman.h>
 531 int main(void)
 532 {
 533    mremap(0, 0, 0, MREMAP_MAYMOVE);
 534    return 0;
 535 }
 536 !
 537
 538 link_check setlocale 'for setlocale()' '#define HAVE_SETLOCALE' << \!
 539 #include <locale.h>
 540 int main(void)
 541 {
 542    setlocale(LC_ALL, "");
 543    return 0;
 544 }
 545 !
 546
 547 if [ "${have_setlocale}" = yes ]; then
 548    link_check c90amend1 'for ISO/IEC 9899:1990/Amendment 1:1995' \
 549       '#define HAVE_C90AMEND1' << \!
 550 #include <limits.h>
 551 #include <stdlib.h>
 552 #include <wchar.h>
 553 #include <wctype.h>
 554 int main(void)
 555 {
 556         char mbb[MB_LEN_MAX + 1];
 557    wchar_t      wc;
 558    iswprint(L'c');
 559    towupper(L'c');
 560    mbtowc(&wc, "x", 1);
 561    mbrtowc(&wc, "x", 1, NULL);
 562         (void)wctomb(mbb, wc);
 563    return (mblen("\0", 1) == 0);
 564 }
 565 !
 566
 567    if [ "${have_c90amend1}" = yes ]; then
 568       link_check wcwidth 'for wcwidth()' '#define HAVE_WCWIDTH' << \!
 569 #include <wchar.h>
 570 int main(void)
 571 {
 572    wcwidth(L'c');
 573    return 0;
 574 }
 575 !
 576    fi
 577
 578    link_check nl_langinfo 'for nl_langinfo()' '#define HAVE_NL_LANGINFO' << \!
 579 #include <langinfo.h>
 580 #include <stdlib.h>
 581 int main(void)
 582 {
 583    nl_langinfo(DAY_1);
 584    return (nl_langinfo(CODESET) == NULL);
 585 }
 586 !
 587 fi # have_setlocale
 588
 589 link_check mkstemp 'for mkstemp()' '#define HAVE_MKSTEMP' << \!
 590 #include <stdlib.h>
 591 int main(void)
 592 {
 593    mkstemp("x");
 594    return 0;
 595 }
 596 !
 597
 598 # Note: run_check, thus we also get only the desired implementation...
 599 run_check realpath 'for realpath()' '#define HAVE_REALPATH' << \!
 600 #include <stdlib.h>
 601 int main(void)
 602 {
 603    char *x = realpath(".", NULL), *y = realpath("/", NULL);
 604    return (x != NULL && y != NULL) ? 0 : 1;
 605 }
 606 !
 607
 608 link_check wordexp 'for wordexp()' '#define HAVE_WORDEXP' << \!
 609 #include <wordexp.h>
 610 int main(void)
 611 {
 612    wordexp((char *)0, (wordexp_t *)0, 0);
 613    return 0;
 614 }
 615 !
 616
 617 ##
 618
 619 if wantfeat DEBUG; then
 620    echo '#define HAVE_DEBUG' >> ${h}
 621 fi
 622
 623 if wantfeat AMALGAMATION; then
 624    echo '#define HAVE_AMALGAMATION' >> ${h}
 625 fi
 626
 627 if nwantfeat NOALLOCA; then
 628    # Due to NetBSD PR lib/47120 it seems best not to use non-cc-builtin
 629    # versions of alloca(3) since modern compilers just can't be trusted
 630    # not to overoptimize and silently break some code
 631    link_check alloca 'for __builtin_alloca()' \
 632       '#define HAVE_ALLOCA __builtin_alloca' << \!
 633 int main(void)
 634 {
 635    void *vp = __builtin_alloca(1);
 636    return (!! vp);
 637 }
 638 !
 639 fi
 640
 641 if wantfeat DEVEL; then
 642    echo '#define HAVE_DEVEL' >> ${h}
 643 fi
 644
 645 if wantfeat NYD2; then
 646    echo '#define HAVE_NYD2' >> ${h}
 647 fi
 648
 649 ##
 650
 651 if wantfeat ICONV; then
 652    ${cat} > ${tmp2}.c << \!
 653 #include <iconv.h>
 654 int main(void)
 655 {
 656    iconv_t      id;
 657
 658    id = iconv_open("foo", "bar");
 659    return 0;
 660 }
 661 !
 662    < ${tmp2}.c link_check iconv 'for iconv functionality' \
 663          '#define HAVE_ICONV' ||
 664       < ${tmp2}.c link_check iconv \
 665          'for iconv functionality in libiconv' \
 666          '#define HAVE_ICONV' '-liconv'
 667 else
 668    echo '/* WANT_ICONV=0 */' >> ${h}
 669 fi # wantfeat ICONV
 670
 671 if wantfeat SOCKETS; then
 672    compile_check arpa_inet_h 'for <arpa/inet.h>' \
 673       '#define HAVE_ARPA_INET_H' << \!
 674 #include "config.h"
 675 #include <sys/types.h>
 676 #include <sys/socket.h>
 677 #include <netdb.h>
 678 #include <netinet/in.h>
 679 #include <arpa/inet.h>
 680 !
 681
 682    ${cat} > ${tmp2}.c << \!
 683 #include "config.h"
 684 #include <sys/types.h>
 685 #include <sys/socket.h>
 686 #include <netdb.h>
 687 #include <netinet/in.h>
 688 #ifdef HAVE_ARPA_INET_H
 689 #include <arpa/inet.h>
 690 #endif
 691
 692 int main(void)
 693 {
 694    struct sockaddr      s;
 695    socket(AF_INET, SOCK_STREAM, 0);
 696    connect(0, &s, 0);
 697    gethostbyname("foo");
 698    return 0;
 699 }
 700 !
 701
 702    < ${tmp2}.c link_check sockets 'for sockets in libc' \
 703          '#define HAVE_SOCKETS' ||
 704       < ${tmp2}.c link_check sockets 'for sockets in libnsl' \
 705          '#define HAVE_SOCKETS' '-lnsl' ||
 706       < ${tmp2}.c link_check sockets \
 707          'for sockets in libsocket and libnsl' \
 708          '#define HAVE_SOCKETS' '-lsocket -lnsl' ||
 709       WANT_SOCKETS=0
 710
 711    # XXX Shouldn't it be a hard error if there is no socket support, then?
 712    option_update
 713 else
 714    echo '/* WANT_SOCKETS=0 */' >> ${h}
 715 fi # wantfeat SOCKETS
 716
 717 wantfeat SOCKETS &&
 718 link_check setsockopt 'for setsockopt()' '#define HAVE_SETSOCKOPT' << \!
 719 #include <sys/socket.h>
 720 #include <stdlib.h>
 721 int main(void)
 722 {
 723    int sockfd = 3;
 724    setsockopt(sockfd, SOL_SOCKET, SO_KEEPALIVE, NULL, 0);
 725    return 0;
 726 }
 727 !
 728
 729 wantfeat SOCKETS && [ -n "${have_setsockopt}" ] &&
 730 link_check so_sndtimeo 'for SO_SNDTIMEO' '#define HAVE_SO_SNDTIMEO' << \!
 731 #include <sys/socket.h>
 732 #include <stdlib.h>
 733 int main(void)
 734 {
 735    struct timeval tv;
 736    int sockfd = 3;
 737    tv.tv_sec = 42;
 738    tv.tv_usec = 21;
 739    setsockopt(sockfd, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof tv);
 740    setsockopt(sockfd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof tv);
 741    return 0;
 742 }
 743 !
 744
 745 wantfeat SOCKETS && [ -n "${have_setsockopt}" ] &&
 746 link_check so_linger 'for SO_LINGER' '#define HAVE_SO_LINGER' << \!
 747 #include <sys/socket.h>
 748 #include <stdlib.h>
 749 int main(void)
 750 {
 751    struct linger li;
 752    int sockfd = 3;
 753    li.l_onoff = 1;
 754    li.l_linger = 42;
 755    setsockopt(sockfd, SOL_SOCKET, SO_LINGER, &li, sizeof li);
 756    return 0;
 757 }
 758 !
 759
 760 if wantfeat IPV6; then
 761    link_check ipv6 'for IPv6 functionality' '#define HAVE_IPV6' << \!
 762 #include "config.h"
 763 #include <sys/types.h>
 764 #include <sys/socket.h>
 765 #include <netdb.h>
 766 #include <netinet/in.h>
 767 #ifdef HAVE_ARPA_INET_H
 768 #include <arpa/inet.h>
 769 #endif
 770
 771 int main(void)
 772 {
 773    struct addrinfo      a, *ap;
 774    getaddrinfo("foo", "0", &a, &ap);
 775    return 0;
 776 }
 777 !
 778 else
 779    echo '/* WANT_IPV6=0 */' >> ${h}
 780 fi # wantfeat IPV6
 781
 782 if wantfeat IMAP; then
 783    echo '#define HAVE_IMAP' >> ${h}
 784 else
 785    echo '/* WANT_IMAP=0 */' >> ${h}
 786 fi
 787
 788 if wantfeat POP3; then
 789    echo '#define HAVE_POP3' >> ${h}
 790 else
 791    echo '/* WANT_POP3=0 */' >> ${h}
 792 fi
 793
 794 if wantfeat SMTP; then
 795    echo '#define HAVE_SMTP' >> ${h}
 796 else
 797    echo '/* WANT_SMTP=0 */' >> ${h}
 798 fi
 799
 800 if wantfeat SSL; then
 801    link_check openssl 'for sufficiently recent OpenSSL' \
 802       '#define HAVE_SSL
 803       #define HAVE_OPENSSL' '-lssl -lcrypto' << \!
 804 #include <openssl/ssl.h>
 805 #include <openssl/err.h>
 806 #include <openssl/x509v3.h>
 807 #include <openssl/x509.h>
 808 #include <openssl/rand.h>
 809
 810 #if defined OPENSSL_NO_SSL2 && defined OPENSSL_NO_SSL3 &&\
 811       defined OPENSSL_NO_TLS1
 812 # error We need one of (SSLv2 and) SSLv3 and TLS1.
 813 #endif
 814
 815 int main(void)
 816 {
 817    SSLv23_client_method();
 818 #ifndef OPENSSL_NO_SSL3
 819    SSLv3_client_method();
 820 #endif
 821 #ifndef OPENSSL_NO_TLS1
 822    TLSv1_client_method();
 823 # ifdef TLS1_1_VERSION
 824    TLSv1_1_client_method();
 825 # endif
 826 # ifdef TLS1_2_VERSION
 827    TLSv1_2_client_method();
 828 # endif
 829 #endif
 830    PEM_read_PrivateKey(0, 0, 0, 0);
 831    return 0;
 832 }
 833 !
 834
 835    if [ "${have_openssl}" = 'yes' ]; then
 836       compile_check stack_of 'for OpenSSL STACK_OF()' \
 837          '#define HAVE_OPENSSL_STACK_OF' << \!
 838 #include <openssl/ssl.h>
 839 #include <openssl/err.h>
 840 #include <openssl/x509v3.h>
 841 #include <openssl/x509.h>
 842 #include <openssl/rand.h>
 843
 844 int main(void)
 845 {
 846    STACK_OF(GENERAL_NAME) *gens = NULL;
 847    printf("%p", gens);  /* to make it used */
 848    return 0;
 849 }
 850 !
 851
 852       link_check rand_egd 'for OpenSSL RAND_egd()' \
 853          '#define HAVE_OPENSSL_RAND_EGD' '-lssl -lcrypto' << \!
 854 #include <openssl/rand.h>
 855
 856 int main(void)
 857 {
 858    return RAND_egd("some.where") > 0;
 859 }
 860 !
 861
 862       if wantfeat MD5 && nwantfeat NOEXTMD5; then
 863          run_check openssl_md5 'for MD5 digest in OpenSSL' \
 864          '#define HAVE_OPENSSL_MD5' << \!
 865 #include <string.h>
 866 #include <openssl/md5.h>
 867
 868 int main(void)
 869 {
 870    char const dat[] = "abrakadabrafidibus";
 871    char dig[16], hex[16 * 2];
 872    MD5_CTX ctx;
 873    size_t i, j;
 874
 875    memset(dig, 0, sizeof(dig));
 876    memset(hex, 0, sizeof(hex));
 877    MD5_Init(&ctx);
 878    MD5_Update(&ctx, dat, sizeof(dat) - 1);
 879    MD5_Final(dig, &ctx);
 880
 881 #define hexchar(n) ((n) > 9 ? (n) - 10 + 'a' : (n) + '0')
 882    for (i = 0; i < sizeof(hex) / 2; i++) {
 883       j = i << 1;
 884       hex[j] = hexchar((dig[i] & 0xf0) >> 4);
 885       hex[++j] = hexchar(dig[i] & 0x0f);
 886    }
 887    return !!memcmp("6d7d0a3d949da2e96f2aa010f65d8326", hex, sizeof(hex));
 888 }
 889 !
 890       fi # wantfeat MD5 && nwantfeat NOEXTMD5
 891    fi
 892 else
 893    echo '/* WANT_SSL=0 */' >> ${h}
 894 fi # wantfeat SSL
 895
 896 if wantfeat NETRC; then
 897    echo '#define HAVE_NETRC' >> ${h}
 898 else
 899    echo '/* WANT_NETRC=0 */' >> ${h}
 900 fi
 901
 902 if wantfeat GSSAPI; then
 903    ${cat} > ${tmp2}.c << \!
 904 #include <gssapi/gssapi.h>
 905
 906 int main(void)
 907 {
 908    gss_import_name(0, 0, GSS_C_NT_HOSTBASED_SERVICE, 0);
 909    gss_init_sec_context(0,0,0,0,0,0,0,0,0,0,0,0,0);
 910    return 0;
 911 }
 912 !
 913    ${sed} -e '1s/gssapi\///' < ${tmp2}.c > ${tmp3}.c
 914
 915    if command -v krb5-config >/dev/null 2>&1; then
 916       i=`command -v krb5-config`
 917       GSS_LIBS="`CFLAGS= ${i} --libs gssapi`"
 918       GSS_INCS="`CFLAGS= ${i} --cflags`"
 919       i='for GSS-API via krb5-config(1)'
 920    else
 921       GSS_LIBS='-lgssapi'
 922       GSS_INCS=
 923       i='for GSS-API in gssapi/gssapi.h, libgssapi'
 924    fi
 925    < ${tmp2}.c link_check gss \
 926          "${i}" '#define HAVE_GSSAPI' "${GSS_LIBS}" "${GSS_INCS}" ||\
 927       < ${tmp3}.c link_check gss \
 928          'for GSS-API in gssapi.h, libgssapi' \
 929          '#define HAVE_GSSAPI
 930          #define GSSAPI_REG_INCLUDE' \
 931          '-lgssapi' ||\
 932       < ${tmp2}.c link_check gss 'for GSS-API in libgssapi_krb5' \
 933          '#define HAVE_GSSAPI' \
 934          '-lgssapi_krb5' ||\
 935       < ${tmp3}.c link_check gss \
 936          'for GSS-API in libgssapi, OpenBSD-style (pre 5.3)' \
 937          '#define HAVE_GSSAPI
 938          #define GSS_REG_INCLUDE' \
 939          '-lgssapi -lkrb5 -lcrypto' \
 940          '-I/usr/include/kerberosV' ||\
 941       < ${tmp2}.c link_check gss 'for GSS-API in libgss' \
 942          '#define HAVE_GSSAPI' \
 943          '-lgss' ||\
 944       link_check gss 'for GSS-API in libgssapi_krb5, old-style' \
 945          '#define HAVE_GSSAPI
 946          #define GSSAPI_OLD_STYLE' \
 947          '-lgssapi_krb5' << \!
 948 #include <gssapi/gssapi.h>
 949 #include <gssapi/gssapi_generic.h>
 950
 951 int main(void)
 952 {
 953    gss_import_name(0, 0, gss_nt_service_name, 0);
 954    gss_init_sec_context(0,0,0,0,0,0,0,0,0,0,0,0,0);
 955    return 0;
 956 }
 957 !
 958 else
 959    echo '/* WANT_GSSAPI=0 */' >> ${h}
 960 fi # wantfeat GSSAPI
 961
 962 if wantfeat IDNA; then
 963    link_check idna 'for GNU Libidn' '#define HAVE_IDNA' '-lidn' << \!
 964 #include <idna.h>
 965 #include <idn-free.h>
 966 #include <stringprep.h>
 967 int main(void)
 968 {
 969    char *utf8, *idna_ascii, *idna_utf8;
 970    utf8 = stringprep_locale_to_utf8("does.this.work");
 971    if (idna_to_ascii_8z(utf8, &idna_ascii, IDNA_USE_STD3_ASCII_RULES)
 972          != IDNA_SUCCESS)
 973       return 1;
 974    idn_free(idna_ascii);
 975    /* (Rather link check only here) */
 976    idna_utf8 = stringprep_convert(idna_ascii, "UTF-8", "de_DE");
 977    return 0;
 978 }
 979 !
 980 else
 981    echo '/* WANT_IDNA=0 */' >> ${h}
 982 fi
 983
 984 if wantfeat REGEX; then
 985    link_check regex 'for regular expressions' '#define HAVE_REGEX' << \!
 986 #include <regex.h>
 987 #include <stdlib.h>
 988 int main(void)
 989 {
 990    int status;
 991    regex_t re;
 992    if (regcomp(&re, ".*bsd", REG_EXTENDED | REG_ICASE | REG_NOSUB) != 0)
 993       return 1;
 994    status = regexec(&re, "plan9", 0,NULL, 0);
 995    regfree(&re);
 996    return !(status == REG_NOMATCH);
 997 }
 998 !
 999 else
1000    echo '/* WANT_REGEX=0 */' >> ${h}
1001 fi
1002
1003 if wantfeat READLINE; then
1004    __edrdlib() {
1005       link_check readline "for readline(3) (${1})" \
1006          '#define HAVE_READLINE' "${1}" << \!
1007 #include <stdio.h>
1008 #include <readline/history.h>
1009 #include <readline/readline.h>
1010 int main(void)
1011 {
1012    char *rl;
1013    HISTORY_STATE *hs;
1014    HIST_ENTRY **he;
1015    int i;
1016    using_history();
1017    read_history("");
1018    stifle_history(242);
1019    rl = readline("Enter a line:");
1020    if (rl && *rl)
1021       add_history(rl);
1022    write_history("");
1023    rl_extend_line_buffer(10);
1024    rl_point = rl_end = 10;
1025    rl_pre_input_hook = (rl_hook_func_t*)NULL;
1026    rl_forced_update_display();
1027    clear_history();
1028    hs = history_get_history_state();
1029    i = hs->length;
1030    he = history_list();
1031    if (i > 0)
1032       rl = he[0]->line;
1033    rl_free_line_state();
1034    rl_cleanup_after_signal();
1035    rl_reset_after_signal();
1036    return 0;
1037 }
1038 !
1039    }
1040
1041    __edrdlib -lreadline ||
1042       __edrdlib '-lreadline -ltermcap'
1043    [ -n "${have_readline}" ] && WANT_TABEXPAND=1
1044 fi
1045
1046 if wantfeat EDITLINE && [ -z "${have_readline}" ]; then
1047    __edlib() {
1048       link_check editline "for editline(3) (${1})" \
1049          '#define HAVE_EDITLINE' "${1}" << \!
1050 #include <histedit.h>
1051 static char * getprompt(void) { return (char*)"ok"; }
1052 int main(void)
1053 {
1054    EditLine *el_el = el_init("TEST", stdin, stdout, stderr);
1055    HistEvent he;
1056    History *el_hcom = history_init();
1057    history(el_hcom, &he, H_SETSIZE, 242);
1058    el_set(el_el, EL_SIGNAL, 0);
1059    el_set(el_el, EL_TERMINAL, NULL);
1060    el_set(el_el, EL_HIST, &history, el_hcom);
1061    el_set(el_el, EL_EDITOR, "emacs");
1062    el_set(el_el, EL_PROMPT, &getprompt);
1063    el_source(el_el, NULL);
1064    history(el_hcom, &he, H_GETSIZE);
1065    history(el_hcom, &he, H_CLEAR);
1066    el_end(el_el);
1067    /* TODO add loader and addfn checks */
1068    history_end(el_hcom);
1069    return 0;
1070 }
1071 !
1072    }
1073
1074    __edlib -ledit ||
1075       __edlib '-ledit -ltermcap'
1076    [ -n "${have_editline}" ] && WANT_TABEXPAND=0
1077 fi
1078
1079 if wantfeat NCL && [ -z "${have_editline}" ] && [ -z "${have_readline}" ] &&\
1080       [ -n "${have_c90amend1}" ]; then
1081    have_ncl=1
1082    echo '#define HAVE_NCL' >> ${h}
1083 else
1084    echo '/* WANT_{READLINE,EDITLINE,NCL}=0 */' >> ${h}
1085 fi
1086
1087 # Generic have-a-command-line-editor switch for those who need it below
1088 if [ -n "${have_ncl}" ] || [ -n "${have_editline}" ] ||\
1089       [ -n "${have_readline}" ]; then
1090    have_cle=1
1091 fi
1092
1093 if [ -n "${have_cle}" ] && wantfeat TABEXPAND; then
1094    echo '#define HAVE_TABEXPAND' >> ${h}
1095 else
1096    echo '/* WANT_TABEXPAND=0 */' >> ${h}
1097 fi
1098
1099 if [ -n "${have_cle}" ] && wantfeat HISTORY; then
1100    echo '#define HAVE_HISTORY' >> ${h}
1101 else
1102    echo '/* WANT_HISTORY=0 */' >> ${h}
1103 fi
1104
1105 if wantfeat SPAM; then
1106    echo '#define HAVE_SPAM' >> ${h}
1107    if command -v spamc >/dev/null 2>&1; then
1108       echo "#define SPAMC_PATH \"`command -v spamc`\"" >> ${h}
1109    fi
1110 else
1111    echo '/* WANT_SPAM=0 */' >> ${h}
1112 fi
1113
1114 if wantfeat DOCSTRINGS; then
1115    echo '#define HAVE_DOCSTRINGS' >> ${h}
1116 else
1117    echo '/* WANT_DOCSTRINGS=0 */' >> ${h}
1118 fi
1119
1120 if wantfeat QUOTE_FOLD &&\
1121       [ -n "${have_c90amend1}" ] && [ -n "${have_wcwidth}" ]; then
1122    echo '#define HAVE_QUOTE_FOLD' >> ${h}
1123 else
1124    echo '/* WANT_QUOTE_FOLD=0 */' >> ${h}
1125 fi
1126
1127 if wantfeat COLOUR; then
1128    echo '#define HAVE_COLOUR' >> ${h}
1129 else
1130    echo '/* WANT_COLOUR=0 */' >> ${h}
1131 fi
1132
1133 if wantfeat IMAP_SEARCH; then
1134    echo '#define HAVE_IMAP_SEARCH' >> ${h}
1135 else
1136    echo '/* WANT_IMAP_SEARCH=0 */' >> ${h}
1137 fi
1138
1139 if wantfeat MD5; then
1140    echo '#define HAVE_MD5' >> ${h}
1141 else
1142    echo '/* WANT_MD5=0 */' >> ${h}
1143 fi
1144
1145 ## Summarizing ##
1146
1147 # Since we cat(1) the content of those to cc/"ld", convert them to single line
1148 squeeze_em() {
1149    < "${1}" > "${2}" ${awk} \
1150    'BEGIN {ORS = " "} /^[^#]/ {print} {next} END {ORS = ""; print "\n"}'
1151 }
1152 ${rm} -f ${tmp}
1153 squeeze_em ${inc} ${tmp}
1154 ${mv} ${tmp} ${inc}
1155 squeeze_em ${lib} ${tmp}
1156 ${mv} ${tmp} ${lib}
1157
1158 # config.h
1159 ${mv} ${h} ${tmp}
1160 printf '#ifndef _CONFIG_H\n# define _CONFIG_H\n' > ${h}
1161 ${cat} ${tmp} >> ${h}
1162
1163 printf '\n/* The "feature string", for "simplicity" and lex.c */\n' >> ${h}
1164 printf '#ifdef _MAIN_SOURCE\n' >> ${h}
1165 printf '# ifdef HAVE_AMALGAMATION\nstatic\n# endif\n' >> ${h}
1166 printf 'char const features[] = "MIME"\n' >> ${h}
1167 printf '# ifdef HAVE_DOCSTRINGS\n   ",DOCSTRINGS"\n# endif\n' >> ${h}
1168 printf '# ifdef HAVE_ICONV\n   ",ICONV"\n# endif\n' >> ${h}
1169 printf '# ifdef HAVE_SETLOCALE\n   ",LOCALES"\n# endif\n' >> ${h}
1170 printf '# ifdef HAVE_C90AMEND1\n   ",MULTIBYTE CHARSETS"\n# endif\n' >> ${h}
1171 printf '# ifdef HAVE_NL_LANGINFO\n   ",TERMINAL CHARSET"\n# endif\n' >> ${h}
1172 printf '# ifdef HAVE_SOCKETS\n   ",NETWORK"\n# endif\n' >> ${h}
1173 printf '# ifdef HAVE_IPV6\n   ",IPv6"\n# endif\n' >> ${h}
1174 printf '# ifdef HAVE_SSL\n   ",S/MIME,SSL/TLS"\n# endif\n' >> ${h}
1175 printf '# ifdef HAVE_IMAP\n   ",IMAP"\n# endif\n' >> ${h}
1176 printf '# ifdef HAVE_GSSAPI\n   ",GSS-API"\n# endif\n' >> ${h}
1177 printf '# ifdef HAVE_POP3\n   ",POP3"\n# endif\n' >> ${h}
1178 printf '# ifdef HAVE_SMTP\n   ",SMTP"\n# endif\n' >> ${h}
1179 printf '# ifdef HAVE_SPAM\n   ",SPAM"\n# endif\n' >> ${h}
1180 printf '# ifdef HAVE_IDNA\n   ",IDNA"\n# endif\n' >> ${h}
1181 printf '# ifdef HAVE_IMAP_SEARCH\n   ",IMAP-searches"\n# endif\n' >> ${h}
1182 printf '# ifdef HAVE_REGEX\n   ",REGEX"\n# endif\n' >> ${h}
1183 printf '# ifdef HAVE_READLINE\n   ",READLINE"\n# endif\n' >> ${h}
1184 printf '# ifdef HAVE_EDITLINE\n   ",EDITLINE"\n# endif\n' >> ${h}
1185 printf '# ifdef HAVE_NCL\n   ",NCL"\n# endif\n' >> ${h}
1186 printf '# ifdef HAVE_TABEXPAND\n   ",TABEXPAND"\n# endif\n' >> ${h}
1187 printf '# ifdef HAVE_HISTORY\n   ",HISTORY MANAGEMENT"\n# endif\n' >> ${h}
1188 printf '# ifdef HAVE_QUOTE_FOLD\n   ",QUOTE-FOLD"\n# endif\n' >> ${h}
1189 printf '# ifdef HAVE_COLOUR\n   ",COLOUR"\n# endif\n' >> ${h}
1190 printf '# ifdef HAVE_DEBUG\n   ",DEBUG"\n# endif\n' >> ${h}
1191 printf ';\n#endif /* _MAIN_SOURCE */\n' >> ${h}
1192
1193 printf '#endif /* _CONFIG_H */\n' >> ${h}
1194 ${rm} -f ${tmp}
1195
1196 # Create the real mk.mk
1197 ${rm} -rf ${tmp0}.* ${tmp0}*
1198 printf 'OBJ_SRC = ' >> ${mk}
1199 if nwantfeat AMALGAMATION; then
1200    echo *.c >> ${mk}
1201    echo 'OBJ_DEP =' >> ${mk}
1202 else
1203    j=`echo "${src}" | sed 's/^.\///'`
1204    echo "${j}" >> ${mk}
1205    printf 'OBJ_DEP = main.c ' >> ${mk}
1206    printf '#define _MAIN_SOURCE\n' >> ${src}
1207    printf '#include "nail.h"\n#include "main.c"\n' >> ${src}
1208    for i in *.c; do
1209       if [ "${i}" = "${j}" ] || [ "${i}" = main.c ]; then
1210          continue
1211       fi
1212       printf "${i} " >> ${mk}
1213       printf "#include \"${i}\"\n" >> ${src}
1214    done
1215    echo >> ${mk}
1216 fi
1217
1218 echo "LIBS = `${cat} ${lib}`" >> ${mk}
1219 echo "INCLUDES = `${cat} ${inc}`" >> ${mk}
1220 echo >> ${mk}
1221 ${cat} ./mk-mk.in >> ${mk}
1222
1223 ## Finished! ##
1224
1225 ${cat} > ${tmp2}.c << \!
1226 #include "config.h"
1227 #ifdef HAVE_NL_LANGINFO
1228 # include <langinfo.h>
1229 #endif
1230 :
1231 :The following optional features are enabled:
1232 #ifdef HAVE_ICONV
1233 : + Character set conversion using iconv()
1234 #endif
1235 #ifdef HAVE_SETLOCALE
1236 : + Locale support: Printable characters depend on the environment
1237 # ifdef HAVE_C90AMEND1
1238 : + Multibyte character support
1239 # endif
1240 # ifdef HAVE_NL_LANGINFO
1241 : + Automatic detection of terminal character set
1242 # endif
1243 #endif
1244 #ifdef HAVE_SOCKETS
1245 : + Network support
1246 #endif
1247 #ifdef HAVE_IPV6
1248 : + Support for Internet Protocol v6 (IPv6)
1249 #endif
1250 #ifdef HAVE_SSL
1251 # ifdef HAVE_OPENSSL
1252 : + S/MIME and SSL/TLS using OpenSSL
1253 # endif
1254 #endif
1255 #ifdef HAVE_IMAP
1256 : + IMAP protocol
1257 #endif
1258 #ifdef HAVE_GSSAPI
1259 : + GSS-API authentication
1260 #endif
1261 #ifdef HAVE_POP3
1262 : + POP3 protocol
1263 #endif
1264 #ifdef HAVE_SMTP
1265 : + SMTP protocol
1266 #endif
1267 #ifdef HAVE_SPAM
1268 : + Interaction with spam filters
1269 #endif
1270 #ifdef HAVE_IDNA
1271 : + IDNA (internationalized domain names for applications) support
1272 #endif
1273 #ifdef HAVE_IMAP_SEARCH
1274 : + IMAP-style search expressions
1275 #endif
1276 #ifdef HAVE_REGEX
1277 : + Regular expression support (searches, conditional expressions etc.)
1278 #endif
1279 #if defined HAVE_READLINE || defined HAVE_EDITLINE || defined HAVE_NCL
1280 : + Command line editing
1281 # ifdef HAVE_TABEXPAND
1282 : + + Tabulator expansion
1283 # endif
1284 # ifdef HAVE_HISTORY
1285 : + + History management
1286 # endif
1287 #endif
1288 #ifdef HAVE_QUOTE_FOLD
1289 : + Extended *quote-fold*ing
1290 #endif
1291 #ifdef HAVE_COLOUR
1292 : + Coloured message display (simple)
1293 #endif
1294 :
1295 :The following optional features are disabled:
1296 #ifndef HAVE_ICONV
1297 : - Character set conversion using iconv()
1298 #endif
1299 #ifndef HAVE_SETLOCALE
1300 : - Locale support: Only ASCII characters are recognized
1301 #endif
1302 # ifndef HAVE_C90AMEND1
1303 : - Multibyte character support
1304 # endif
1305 # ifndef HAVE_NL_LANGINFO
1306 : - Automatic detection of terminal character set
1307 # endif
1308 #ifndef HAVE_SOCKETS
1309 : - Network support
1310 #endif
1311 #ifndef HAVE_IPV6
1312 : - Support for Internet Protocol v6 (IPv6)
1313 #endif
1314 #if !defined HAVE_SSL
1315 : - SSL/TLS (network transport authentication and encryption)
1316 #endif
1317 #ifndef HAVE_IMAP
1318 : - IMAP protocol
1319 #endif
1320 #ifndef HAVE_GSSAPI
1321 : - GSS-API authentication
1322 #endif
1323 #ifndef HAVE_POP3
1324 : - POP3 protocol
1325 #endif
1326 #ifndef HAVE_SMTP
1327 : - SMTP protocol
1328 #endif
1329 #ifndef HAVE_SPAM
1330 : - Interaction with spam filters
1331 #endif
1332 #ifndef HAVE_IDNA
1333 : - IDNA (internationalized domain names for applications) support
1334 #endif
1335 #ifndef HAVE_IMAP_SEARCH
1336 : - IMAP-style search expressions
1337 #endif
1338 #ifndef HAVE_REGEX
1339 : - Regular expression support
1340 #endif
1341 #if !defined HAVE_READLINE && !defined HAVE_EDITLINE && !defined HAVE_NCL
1342 : - Command line editing and history
1343 #endif
1344 #ifndef HAVE_QUOTE_FOLD
1345 : - Extended *quote-fold*ing
1346 #endif
1347 #ifndef HAVE_COLOUR
1348 : - Coloured message display (simple)
1349 #endif
1350 :
1351 :Remarks:
1352 #ifndef HAVE_SNPRINTF
1353 : . The function snprintf() could not be found. mailx will be compiled to use
1354 : sprintf() instead. This might overflow buffers if input values are larger
1355 : than expected. Use the resulting binary with care or update your system
1356 : environment and start the configuration process again.
1357 #endif
1358 #ifndef HAVE_FCHDIR
1359 : . The function fchdir() could not be found. mailx will be compiled to use
1360 : chdir() instead. This is not a problem unless the current working
1361 : directory of mailx is moved while the IMAP cache is used.
1362 #endif
1363 #ifdef HAVE_DEBUG
1364 : . Debug enabled binary: not meant to be used by end-users: THANKS!
1365 #endif
1366 :
1367 !
1368
1369 ${make} -f ${makefile} ${tmp2}.x
1370 < ${tmp2}.x >&5 ${sed} -e '/^[^:]/d; /^$/d; s/^://'
1371
1372 # vim:set fenc=utf-8:s-it-mode