configure.in

   1 dnl == autoconf source for the Glasgow FP tools ==
   2 dnl (grep for '^dnl' to see the outline of this file)
   3 dnl
   4 dnl * INITIAL SETUP, CHOICE OF PLATFORM(S)
   5 #!/bin/sh
   6 #
   7 # (c) The AQUA Project, Glasgow University, 1994-1997
   8 #
   9 # Configure script for the Glasgow functional programming tools
  10 # (created automagically by autoconf...do not edit by hand)
  11 #
  12 # Do "./configure --help" to see what flags are available.
  13 # (Better yet, read the documentation!)
  14 #
  15 # First off, a distrib sanity check..
  16 AC_INIT(mk/config.mk.in)
  17
  18 # -------------------------------------------------------------------------
  19 # Prepare to generate the following header files
  20 #
  21 #
  22 AC_CONFIG_HEADER(mk/config.h)
  23
  24 # No, we don't do `--srcdir'...
  25 if test x"$srcdir" != 'x.' ; then
  26     echo "This configuration does not support the \`--srcdir' option.."
  27     exit 1
  28 fi
  29
  30 #
  31 # Remove some automounter nonsense (Glasgow specific gruff)
  32 #
  33 hardtop=`pwd`
  34 hardtop=`echo $hardtop | sed 's|^/tmp_mnt/|/|' | sed 's|^/grasp_tmp|/local/grasp_tmp|'`
  35
  36 #OLD: hardtop=`echo $hardtop | sed 's|^/tmp_mnt/|/|' | sed 's|^/export/|/|' | sed 's|^/grasp_tmp|/local/grasp_tmp|'`
  37
  38 echo ''
  39 echo "*** The top of your build tree is: $hardtop"
  40 AC_SUBST(hardtop)
  41
  42 # -------------------------------------------------------------------------
  43 dnl ** choose host(/target/build) platform
  44 #
  45 # Guess host/target/build platform(s) if necessary.
  46 #
  47 AC_CANONICAL_SYSTEM
  48
  49 # "$host" defaults to "$target"
  50 if test "x$host" = xNONE ; then
  51     host=$target
  52 fi
  53 # "$build" defaults to "$host"
  54 #if test "x$build" = xNONE ; then
  55 #    build=$host
  56 #else
  57 #    echo "This configuration does not support the \`--build' option."
  58 #    exit 1
  59 #fi
  60
  61 dnl ** canonicalize platform names
  62 # Canonicali[sz]e those babies
  63 BuildPlatform=`/bin/sh $srcdir/config.sub $build` || exit 1
  64 HostPlatform=`/bin/sh $srcdir/config.sub $host` || exit 1
  65 TargetPlatform=`/bin/sh $srcdir/config.sub $target` || exit 1
  66
  67 if test x"$TargetPlatform" != x"$HostPlatform" ; then
  68     echo "GHC configuration does not support differing host/target (i.e., cross-compiling)"
  69     exit 1
  70 fi
  71
  72 #
  73 # The following will be more difficult when we *are* cross-compiling.
  74 # Suitable names to slam in *_CPP are in platform.h.in.
  75 # We also record the architecture, vendor, and operating system (OS)
  76 # separately.
  77 case $HostPlatform in
  78 alpha-dec-osf[[1234]]*)
  79         HostPlatform=alpha-dec-osf1   # canonicalise for our purposes
  80         TargetPlatform=alpha-dec-osf1 # this will work for now... (hack)
  81         BuildPlatform=alpha-dec-osf1  # hack
  82         HostPlatform_CPP='alpha_dec_osf1'
  83         HostArch_CPP='alpha'
  84         HostVendor_CPP='dec'
  85         HostOS_CPP='osf1'
  86         ;;
  87 hppa1.1-hp-hpux*)
  88         HostPlatform=hppa1.1-hp-hpux  # canonicalise for our purposes (hack)
  89         TargetPlatform=hppa1.1-hp-hpux
  90         BuildPlatform=hppa1.1-hp-hpux
  91         HostPlatform_CPP='hppa1_1_hp_hpux'
  92         HostArch_CPP='hppa1_1'
  93         HostVendor_CPP='hp'
  94         HostOS_CPP='hpux'
  95         ;;
  96 i[[3456]]86-*-linuxaout*)
  97         HostPlatform=i386-unknown-linuxaout   # hack again
  98         TargetPlatform=i386-unknown-linuxaout
  99         BuildPlatform=i386-unknown-linuxaout
 100         HostPlatform_CPP='i386_unknown_linuxaout'
 101         HostArch_CPP='i386'
 102         HostVendor_CPP='unknown'
 103         HostOS_CPP='linuxaout'
 104         ;;
 105 i[[3456]]86-*-linux*)
 106         HostPlatform=i386-unknown-linux # hack again
 107         TargetPlatform=i386-unknown-linux
 108         BuildPlatform=i386-unknown-linux
 109         HostPlatform_CPP='i386_unknown_linux'
 110         HostArch_CPP='i386'
 111         HostVendor_CPP='unknown'
 112         HostOS_CPP='linux'
 113         ;;
 114 i[[3456]]86-*-freebsd*)
 115         HostPlatform=i386-unknown-freebsd # hack again
 116         TargetPlatform=i386-unknown-freebsd
 117         BuildPlatform=i386-unknown-freebsd
 118         HostPlatform_CPP='i386_unknown_freebsd'
 119         HostArch_CPP='i386'
 120         HostVendor_CPP='unknown'
 121         HostOS_CPP='freebsd'
 122         ;;
 123 i[[3456]]86-*-netbsd*)
 124         HostPlatform=i386-unknown-netbsd # hack again
 125         TargetPlatform=i386-unknown-netbsd
 126         BuildPlatform=i386-unknown-netbsd
 127         HostPlatform_CPP='i386_unknown_netbsd'
 128         HostArch_CPP='i386'
 129         HostVendor_CPP='unknown'
 130         HostOS_CPP='netbsd'
 131         ;;
 132 i[[3456]]86-*-solaris2*)
 133         HostPlatform=i386-unknown-solaris2 # hack again
 134         TargetPlatform=i386-unknown-solaris2
 135         BuildPlatform=i386-unknown-solaris2
 136         HostPlatform_CPP='i386_unknown_solaris2'
 137         HostArch_CPP='i386'
 138         HostVendor_CPP='unknown'
 139         HostOS_CPP='solaris2'
 140         ;;
 141 i[[3456]]86-*-cygwin32*)
 142         HostPlatform=i386-unknown-cygwin32 # hack again
 143         TargetPlatform=i386-unknown-cygwin32
 144         BuildPlatform=i386-unknown-cygwin32
 145         HostPlatform_CPP='i386_unknown_cygwin32'
 146         HostArch_CPP='i386'
 147         HostVendor_CPP='unknown'
 148         HostOS_CPP='cygwin32'
 149         ;;
 150 m68k-next-nextstep2)
 151         HostPlatform_CPP='m68k_next_nextstep2'
 152         HostArch_CPP='m68k'
 153         HostVendor_CPP='next'
 154         HostOS_CPP='nextstep2'
 155         ;;
 156 m68k-next-nextstep3)
 157         HostPlatform_CPP='m68k_next_nextstep3'
 158         HostArch_CPP='m68k'
 159         HostVendor_CPP='next'
 160         HostOS_CPP='nextstep3'
 161         ;;
 162 i[[3456]]86-next-nextstep3)
 163         HostPlatform=i386-next-nextstep3 # hack again
 164         TargetPlatform=i386-next-nextstep3
 165         BuildPlatform=i386-next-nextstep3
 166         HostPlatform_CPP='i386_next_nextstep3'
 167         HostArch_CPP='i386'
 168         HostVendor_CPP='next'
 169         HostOS_CPP='nextstep3'
 170         ;;
 171 m68k-sun-sunos4*)
 172         HostPlatform=m68k-sun-sunos4
 173         TargetPlatform=m68k-sun-sunos4 #hack
 174         BuildPlatform=m68k-sun-sunos4 #hack
 175         HostPlatform_CPP='m68k_sun_sunos4'
 176         HostArch_CPP='m68k'
 177         HostVendor_CPP='sun'
 178         HostOS_CPP='sunos4'
 179         ;;
 180 mips-dec-ultrix*)
 181         HostPlatform_CPP='mips_dec_ultrix'
 182         HostArch_CPP='mipsel'   # NB a little different
 183         HostVendor_CPP='dec'
 184         HostOS_CPP='ultrix'
 185         ;;
 186 mips-sgi-irix*)
 187         HostPlatform=mips-sgi-irix
 188         TargetPlatform=mips-sgi-irix #hack
 189         BuildPlatform=mips-sgi-irix #hack
 190         HostPlatform_CPP='mips_sgi_irix'
 191         HostArch_CPP='mipseb'   # NB a little different
 192         HostVendor_CPP='sgi'
 193         HostOS_CPP='irix'
 194         ;;
 195 rs6000-ibm-aix*)
 196         HostPlatform=rs6000-ibm-aix
 197         TargetPlatform=rs6000-ibm-aix #hack
 198         BuildPlatform=rs6000-ibm-aix #hack
 199         HostPlatform_CPP='rs6000_ibm_aix'
 200         HostArch_CPP='rs6000'
 201         HostVendor_CPP='ibm'
 202         HostOS_CPP='aix'
 203         ;;
 204 powerpc-ibm-aix*)
 205         HostPlatform=powerpc-ibm-aix
 206         TargetPlatform=powerpc-ibm-aix #hack
 207         BuildPlatform=powerpc-ibm-aix #hack
 208         HostPlatform_CPP='powerpc_ibm_aix'
 209         HostArch_CPP='powerpc'
 210         HostVendor_CPP='ibm'
 211         HostOS_CPP='aix'
 212         ;;
 213 sparc-sun-sunos4*)
 214         HostPlatform=sparc-sun-sunos4
 215         TargetPlatform=sparc-sun-sunos4 #hack
 216         BuildPlatform=sparc-sun-sunos4 #hack
 217         HostPlatform_CPP='sparc_sun_sunos4'
 218         HostArch_CPP='sparc'
 219         HostVendor_CPP='sun'
 220         HostOS_CPP='sunos4'
 221         ;;
 222 sparc-sun-solaris2*)
 223         HostPlatform=sparc-sun-solaris2
 224         TargetPlatform=sparc-sun-solaris2 #hack
 225         BuildPlatform=sparc-sun-solaris2 #hack
 226         HostPlatform_CPP='sparc_sun_solaris2'
 227         HostArch_CPP='sparc'
 228         HostVendor_CPP='sun'
 229         HostOS_CPP='solaris2'
 230         ;;
 231 *)
 232         echo "Unrecognised platform: $HostPlatform"
 233         exit 1
 234         ;;
 235 esac
 236 echo "Which we'll canonicalise into: $HostPlatform"
 237 test  x"$HostPlatform" != x"$TargetPlatform" && echo "Target platform set to $TargetPlatform"
 238 test  x"$BuildPlatform" != x"$HostPlatform"  && echo "Build platform set to $BuildPlatform"
 239
 240 BuildPlatform_CPP=$HostPlatform_CPP
 241 TargetPlatform_CPP=$HostPlatform_CPP
 242 BuildArch_CPP=$HostArch_CPP
 243 TargetArch_CPP=$HostArch_CPP
 244 BuildOS_CPP=$HostOS_CPP
 245 TargetOS_CPP=$HostOS_CPP
 246 BuildVendor_CPP=$HostVendor_CPP
 247 TargetVendor_CPP=$HostVendor_CPP
 248
 249 dnl Cannot afford all these SUBSTs (because of braindead seds w/ 99 cmd limits)
 250 dnl AC_SUBST(BuildPlatform)
 251 AC_SUBST(HostPlatform)
 252 AC_SUBST(TargetPlatform)
 253 AC_SUBST(HostPlatform_CPP)
 254 dnl AC_SUBST(BuildPlatform_CPP)
 255 dnl AC_SUBST(TargetPlatform_CPP)
 256 AC_SUBST(HostArch_CPP)
 257 dnl AC_SUBST(BuildArch_CPP)
 258 dnl AC_SUBST(TargetArch_CPP)
 259 AC_SUBST(HostOS_CPP)
 260 dnl AC_SUBST(BuildOS_CPP)
 261 dnl AC_SUBST(TargetOS_CPP)
 262 AC_SUBST(HostVendor_CPP)
 263 dnl AC_SUBST(BuildVendor_CPP)
 264 dnl AC_SUBST(TargetVendor_CPP)
 265
 266 # -------------------------------------------------------------------------
 267 dnl
 268 dnl * _GENERAL_ CONFIGURATION CHECKS
 269 #
 270 dnl ** are we at Glasgow?
 271 #
 272 # This stuff is in danger of going away..
 273 #
 274 if test -d /local/fp -a -d /users/fp/simonpj; then
 275     echo "Brilliant!  You must be a Glaswegian."
 276     AT_GLASGOW=1
 277     if test "x$prefix" = xNONE; then
 278         prefix=/local/fp
 279         echo "Assuming installation prefix of $prefix"
 280     fi
 281     if test "x$exec_prefix" = xNONE; then
 282         # Sigh: the defn of exec_prefix does not include the bin* bit...
 283         # WDP 94/07
 284         exec_prefix=/local/fp
 285         echo "Assuming binary installation prefix of $exec_prefix"
 286     fi
 287 else
 288     AT_GLASGOW=0
 289 fi
 290 AC_SUBST(AT_GLASGOW)
 291 test -n "$verbose" && echo "    setting AT_GLASGOW to $AT_GLASGOW"
 292 #
 293 #
 294 #
 295 dnl ** does #! work?
 296 #
 297 AC_SYS_INTERPRETER()
 298 #
 299 dnl ** look for `perl', but watch out for version 4.035
 300 #
 301 AC_CHECK_PROG(PerlCmd,perl,$ac_dir/$ac_word)
 302 if test -z "$PerlCmd"; then
 303     echo "You must install perl before you can continue"
 304     echo "Perhaps it is already installed, but not in your PATH?"
 305     exit 1
 306 else
 307     $PerlCmd -v >conftest.out 2>&1
 308     if egrep "version 4" conftest.out >/dev/null 2>&1; then
 309         if egrep "Patch level: 35" conftest.out >/dev/null 2>&1; then
 310             echo "
 311 ************************************************************************
 312 Uh-oh...looks like you have Perl 4.035.
 313
 314 Perl version 4.035 has a bug to do with recursion that will bite if
 315 you run the lit2texi script, when making Info files from
 316 literate files of various sorts.  Either use the current version
 317 (4.036), an older version (e.g., perl 4.019) or apply the patch in
 318 glafp-utils/perl-4.035-fixes to your 4.035 perl.
 319 ************************************************************************
 320 "
 321         fi
 322     else
 323         if egrep "version 5" conftest.out >/dev/null 2>&1; then
 324             :
 325         else
 326             echo "I'm not sure if your version of perl will work,"
 327             echo "but it's worth a shot, eh?"
 328         fi
 329     fi
 330     rm -fr conftest*
 331 fi
 332 #
 333 dnl ** does #!.../perl work? (sometimes it's too long...)
 334 echo "checking if \`#!$PerlCmd' works in shell scripts"
 335 echo "#!$PerlCmd"'
 336 exit $1;
 337 ' > conftest
 338 chmod u+x conftest
 339 (SHELL=/bin/sh; export SHELL; ./conftest 69 > /dev/null)
 340 if test $? -ne 69; then
 341    echo "It does!"
 342 else
 343    echo "It doesn't!  Perhaps \`#!$PerlCmd' is too long (often 32 characters max)"
 344    exit 1
 345 fi
 346 rm -f conftest
 347 #
 348 dnl ** check if perl library is properly installed
 349 # (by seeing if a "do 'getopts.pl'" works...
 350 if $PerlCmd -e 'do "getopts.pl" || exit(1); exit(0);' > /dev/null 2>&1 ; then
 351     :
 352 else
 353     echo "I think your perl library is misinstalled:"
 354     echo "The following script did not work:"
 355     echo '      do "getopts.pl" || exit(1); exit(0);'
 356     echo 'But, anyway, we will continue in our quest..'
 357 fi
 358 #
 359 #
 360 dnl ** look for GCC and find out which version
 361 # Figure out which C compiler to use.  Gcc is preferred.
 362 # If gcc, make sure it's at least 2.1
 363 #
 364 AC_PROG_CC
 365 if test -z "$GCC"; then
 366     echo "You would be better off with gcc"
 367     echo "Perhaps it is already installed, but not in your PATH?"
 368     HaveGcc='NO'
 369 else
 370     gcc -v > conftest.out 2>&1
 371     echo '/version (\d+)\.(\d+)/ && $1*10+$2 > 20 && print "YES";' > conftest.pl
 372     HaveGcc=`eval $PerlCmd -n conftest.pl conftest.out`
 373     if test -z "$HaveGcc"; then
 374         echo "I'm not sure if your version of gcc will work,"
 375         echo "but it's worth a shot, eh?"
 376         HaveGcc='YES'
 377     fi
 378     rm -fr conftest*
 379 fi
 380 AC_SUBST(HaveGcc)
 381
 382 # Deprecated (AC_PROG_CC does it): AC_C_CROSS
 383 #
 384 dnl ** figure out how to do context diffs
 385 # (NB: NeXTStep thinks diff'ing a file against itself is "trouble")
 386 #
 387 echo foo > conftest1
 388 echo foo > conftest2
 389 if diff -C 1 conftest1 conftest2 > /dev/null 2>&1 ; then
 390     ContextDiffCmd='diff -C 1'
 391 else
 392     if diff -c1 conftest1 conftest2 > /dev/null 2>&1 ; then
 393         ContextDiffCmd='diff -c1'
 394     else
 395         echo "Can't figure out how to do context diffs."
 396         echo "Neither \`diff -C 1' nor \`diff -c1' works."
 397         exit 1
 398     fi
 399 fi
 400 rm -f conftest1 conftest2
 401 AC_SUBST(ContextDiffCmd)
 402 #
 403 dnl ** look for a decent parser generator (bison preferred)
 404 #
 405 #
 406 AC_CHECK_PROG(YaccCmd, bison, bison -y)
 407 if test -z "$YaccCmd"; then
 408     echo "Can't find bison out there..."
 409     AC_CHECK_PROG(WhatCmd, what, what, :)
 410     AC_CHECK_PROG(YaccCmd, yacc, $ac_dir/$ac_word)
 411     if test -z "$YaccCmd"; then
 412         echo "But that's okay...I can't find yacc either."
 413         YaccCmd=:
 414     else
 415         $WhatCmd $YaccCmd > conftest.out
 416         if egrep 'y1\.c 1\..*SMI' conftest.out >/dev/null 2>&1; then
 417             echo "I don't trust your $YaccCmd; it looks like an old Sun yacc"
 418             if test -f /usr/lang/yacc; then
 419                 echo "I'm going to use /usr/lang/yacc instead"
 420                 YaccCmd=/usr/lang/yacc
 421             else
 422                 echo "I'm assuming the worst...no parser generator at all"
 423                 YaccCmd=:
 424             fi
 425         elif egrep 'y1\.c.*Revision: 4\.2\.6\.3.*DEC' conftest.out >/dev/null 2>&1; then
 426             echo "I don't trust your $YaccCmd; it looks like a lame DEC yacc"
 427             echo "I'm assuming the worst...no parser generator at all"
 428             YaccCmd=:
 429         else
 430             echo "But that's okay...as far as I know, your yacc will work."
 431         fi
 432         rm -fr conftest*
 433     fi
 434 fi
 435
 436 dnl ** Find lex command (lex or flex) and library (-ll or -lfl)
 437 #
 438 AC_PROG_LEX
 439
 440 # -------------------------------------------------------------------------
 441 #
 442 dnl ** figure out how to invoke cpp directly (gcc -E is no good)
 443 #
 444 AC_PROG_CPP
 445 if echo $CPP | egrep gcc >/dev/null 2>&1; then
 446     echo > conftest.c
 447     gcc -v -E conftest.c >/dev/null 2>conftest.out
 448     echo '/(\S+\/cpp)/ && print "$1";' > conftest.pl
 449     # GNUCPP: used in jmake.c (GnuCppCmd) and in mkdependC
 450     # (where we could do with the usual pre-#defines)
 451     GNUCPP="`eval $PerlCmd -n conftest.pl conftest.out`"
 452     test -n "$verbose" && echo "        setting GNUCPP to $GNUCPP"
 453     # RAWCPP: we do not want *any* pre-#defines...
 454     # (e.g., hscpp, mkdependHS)
 455     RAWCPP="`eval $PerlCmd -n conftest.pl conftest.out` -traditional"
 456     test -n "$verbose" && echo "        setting RAWCPP to $RAWCPP"
 457     rm -fr conftest*
 458 fi
 459 # ToDo: what are GNUCPP and RAWCPP if the above if didn't fire? WDP 95/02
 460 AC_SUBST(GNUCPP)
 461 AC_SUBST(RAWCPP)
 462 #
 463 dnl ** figure out how to do a BSD-ish install
 464 #
 465 AC_PROG_INSTALL
 466 #
 467 dnl ** figure out what arguments to feed to `ar'
 468 #
 469 AC_CHECK_PROG(ArCmd,ar,$ac_dir/$ac_word)
 470 if test -z "$ArCmd"; then
 471     echo "You don't seem to have ar...I have no idea how to make a library"
 472     exit 1;
 473 fi
 474 if $ArCmd clqs conftest.a >/dev/null 2>/dev/null; then
 475     ArCmd="$ArCmd clqs"
 476     NeedRanLib=''
 477 elif $ArCmd cqs conftest.a >/dev/null 2>/dev/null; then
 478     ArCmd="$ArCmd cqs"
 479     NeedRanLib=''
 480 elif $ArCmd clq conftest.a >/dev/null 2>/dev/null; then
 481     ArCmd="$ArCmd clq"
 482     NeedRanLib='YES'
 483 elif $ArCmd cq conftest.a >/dev/null 2>/dev/null; then
 484     ArCmd="$ArCmd cq"
 485     NeedRanLib='YES'
 486 elif $ArCmd cq conftest.a 2>&1 | grep 'no archive members specified' >/dev/null 2>/dev/null; then
 487     ArCmd="$ArCmd cq"
 488     NeedRanLib='YES'
 489 else
 490     echo "I can't figure out how to use your $ArCmd"
 491     exit 1
 492 fi
 493 rm -rf conftest*
 494 test -n "$ArCmd" && test -n "$verbose" && echo "        setting ArCmd to $ArCmd"
 495 AC_SUBST(ArCmd)
 496 #
 497 dnl ** figure out if we need `ranlib'
 498 #
 499 if test -z "$NeedRanLib"; then
 500     # we hackily override a few platforms on a case-by-case basis
 501     case $HostPlatform in
 502     i386-*-linuxaout)
 503         NeedRanLib='YES'
 504         ;;
 505     *)  RANLIB=':'
 506         ;;
 507     esac
 508     test -n "$verbose" && echo "        setting RANLIB to $RANLIB"
 509 fi
 510 if test -n "$NeedRanLib"; then
 511     AC_PROG_RANLIB
 512 fi
 513 AC_SUBST(RANLIB)
 514 #
 515 #
 516 dnl ** Check to see whether ln -s works
 517 #
 518 AC_PROG_LN_S()
 519 AC_SUBST(LN_S)
 520 #
 521 dnl ** Find the path to sed **
 522 AC_PATH_PROG(SedCmd,sed,$ac_dir/$ac_word)
 523 #
 524 # It better be around somewhere (we wouldn't
 525 # exec this script properly if it wasn't!)
 526 #
 527 AC_SUBST(SedCmd)
 528 #
 529 dnl ** check for time command **
 530 AC_PATH_PROG(TimeCmd,time,$ac_dir/$ac_word)
 531 #
 532 AC_SUBST(TimeCmd)
 533 #
 534 dnl ** check for tar **
 535 #
 536 # if GNU tar is named gtar, look for it first.
 537 #
 538 AC_PATH_PROGS(TarCmd,gtar tar,tar)
 539 AC_SUBST(TarCmd)
 540
 541 #
 542 dnl ** check for gzip/compress **
 543 AC_PATH_PROGS(CompressCmd,gzip compress,gzip)
 544
 545 compress_nm=`basename $CompressCmd`
 546
 547 if test x"$compress_nm" = xgzip; then
 548   CompressCmd="$CompressCmd -d"
 549   CompressSuffix="gz"
 550 else
 551   CompressSuffix="Z"
 552 fi
 553 AC_SUBST(CompressCmd)
 554 AC_SUBST(CompressSuffix)
 555 #
 556 dnl ** check for installed happy binary
 557 #
 558 AC_PATH_PROG(HappyCmd,happy)
 559 AC_SUBST(HappyCmd)
 560 #
 561 #
 562 dnl ** check for installed lx binary
 563 #
 564 AC_PATH_PROG(LxCmd,lx)
 565 AC_SUBST(LxCmd)
 566 #
 567 #
 568 dnl ** check for full ANSI header (.h) files
 569 #
 570 AC_HEADER_STDC
 571 #
 572 dnl ** check for specific header (.h) files that we are interested in
 573 #
 574 AC_CHECK_HEADERS(dirent.h fcntl.h grp.h malloc.h memory.h nlist.h pwd.h siginfo.h signal.h stdlib.h string.h sys/fault.h sys/file.h sys/mman.h sys/param.h sys/procfs.h sys/resource.h sys/signal.h sys/socket.h sys/stat.h sys/syscall.h sys/time.h sys/timeb.h sys/timers.h sys/times.h sys/types.h sys/utsname.h sys/vadvise.h sys/wait.h termios.h time.h types.h unistd.h utime.h vfork.h readline/readline.h )
 575 #
 576 dnl ** check if it is safe to include both <time.h> and <sys/time.h>
 577 #
 578 AC_HEADER_TIME
 579 #
 580 dnl ** how do we get a timezone name?
 581 #
 582 AC_STRUCT_TIMEZONE
 583 #
 584 dnl ** determine the type of signal()
 585 #
 586 AC_TYPE_SIGNAL
 587 #
 588 dnl ** check for specific library functions that we are interested in
 589 #
 590 AC_CHECK_FUNCS(access ftime getclock getpagesize getrusage gettimeofday mktime mprotect setitimer stat sysconf timelocal times vadvise vfork)
 591 #
 592 dnl ** can we get alloca?
 593 #
 594 AC_FUNC_ALLOCA
 595 #
 596 dnl ** determine whether or not const works
 597 #
 598 AC_C_CONST
 599 #
 600 dnl ** check for leading underscores in symbol names
 601 # We assume that they _aren't_ there if anything goes wrong.
 602 #
 603 echo checking for a leading underscore in symbol names
 604 AC_TRY_RUN(
 605 [#ifdef HAVE_NLIST_H
 606 #include <nlist.h>
 607 struct nlist xYzzY[] = {{"_xYzzY", 0},{0}};
 608 #endif
 609
 610 main(argc, argv)
 611 int argc;
 612 char **argv;
 613 {
 614 #ifdef HAVE_NLIST_H
 615     if(nlist(argv[0], xYzzY) == 0 && xYzzY[0].n_value != 0)
 616         exit(0);
 617 #endif
 618     exit(1);
 619 }], LeadingUnderscore='YES', LeadingUnderscore='NO', LeadingUnderscore='YES')
 620 test -n "$verbose" && echo "    setting LeadingUnderscore to $LeadingUnderscore"
 621 AC_SUBST(LeadingUnderscore)
 622
 623 AC_OUTPUT(mk/config.mk, echo timestamp > mk/stamp-h )
 624
 625 #
 626 # It'll break soon enough if it didn't, but we perform a sanity
 627 # check here on the generated config.mk file to see if the
 628 # sed that was used is of the well-behaved sort.
 629 #
 630 #grep @ mk/config.mk > conftest.out
 631 #if grep -v '#     enclosed in @at-signs@.' conftest.out >/dev/null 2>&1; then
 632 #   :
 633 #else
 634 #   echo 'Hmm..suspicious, did the configure script perform all the @..@ substitutions in mk/config.mk?..';
 635 #   grep -v '#     enclosed in @at-signs@.' conftest.out /dev/null
 636 #fi
 637 #rm -f conftest*
 638
 639 echo ''
 640 echo '************************************************'
 641 echo '*** NOW DO: gmake boot followed by gmake all'
 642 echo '************************************************'
 643 exit 0