configure.in

   1 dnl == autoconf source for the Glasgow FP tools ==
   2 dnl (run "grep '^dnl \*' configure.in | sed -e 's/dnl / /g; s/\*\*/   +/g;'"
   3 dnl  (or some such) to see the outline of this file)
   4 dnl
   5 #
   6 # (c) The AQUA Project, Glasgow University, 1994-1998
   7 #
   8 # Configure script template for the Glasgow functional programming tools
   9 #
  10 # Process with 'autoconf' to get a working configure script.
  11 #
  12 # For the generated configure script, do "./configure --help" to
  13 # see what flags are available. (Better yet, read the documentation!)
  14 #
  15
  16 # First off, a distrib sanity check..
  17 AC_INIT(mk/config.mk.in)
  18
  19 dnl * Declare subdirectories that have a private configure script
  20 dnl
  21 dnl After the toplevel configuration is complete, the script will recurse into
  22 dnl these subdirectories (the use of cache values makes repeated checks cheap)
  23 dnl (We probably have to add hslibs/{OpenGL,GLUT} here later...)
  24 AC_CONFIG_SUBDIRS(ghc)
  25
  26 # -------------------------------------------------------------------------
  27 # Prepare to generate the following header files
  28 #
  29 #
  30 AC_CONFIG_HEADER(mk/config.h)
  31
  32 # No, semi-sadly, we don't do `--srcdir'...
  33 if test x"$srcdir" != 'x.' ; then
  34     echo "This configuration does not support the \`--srcdir' option.."
  35     exit 1
  36 fi
  37
  38 #
  39 # Remove common automounter nonsense + convert from UNC to DOS style paths
  40 # (UNC awareness isn't quite there yet for cygwin32-beta18 and consituent tools.)
  41 #
  42 hardtop=`pwd`
  43 hardtop=`echo $hardtop | sed 's|^/tmp_mnt.*\(/local/.*\)$|\1|' | sed 's|^/tmp_mnt/|/|' | sed 's|^/grasp_tmp|/local/grasp_tmp|' | sed 's|^//\(.\)/|\1:/|' `
  44
  45 echo ''
  46 echo "*** The top of your build tree is: $hardtop"
  47 # subst of hardtop is done below after we've computed hardtop_plat.
  48
  49 dnl--------------------------------------------------------------------
  50 dnl * Choose host(/target/build) platform
  51 dnl--------------------------------------------------------------------
  52
  53 dnl Guess host/target/build platform(s) if necessary.
  54 AC_CANONICAL_SYSTEM
  55
  56 # "$host" defaults to "$target"
  57 if test "x$host" = xNONE ; then
  58     host=$target
  59 fi
  60
  61 dnl ** canonicalize platform names
  62 BuildPlatform=`/bin/sh $srcdir/config.sub $build` || exit 1
  63 HostPlatform=`/bin/sh $srcdir/config.sub $host` || exit 1
  64 TargetPlatform=`/bin/sh $srcdir/config.sub $target` || exit 1
  65
  66 if test x"$TargetPlatform" != x"$HostPlatform" ; then
  67     echo "GHC configuration does not support differing host/target (i.e., cross-compiling)"
  68     exit 1
  69 fi
  70
  71 exeext=''
  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[[12]]*)
  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 alpha*-dec-osf[[345]]*)
  88         HostPlatform=alpha-dec-osf3   # canonicalise for our purposes
  89         TargetPlatform=alpha-dec-osf3 # this will work for now... (hack)
  90         BuildPlatform=alpha-dec-osf3  # hack
  91         HostPlatform_CPP='alpha_dec_osf3'
  92         HostArch_CPP='alpha'
  93         HostVendor_CPP='dec'
  94         HostOS_CPP='osf3'
  95         ;;
  96 alpha*-unknown-linux)
  97         HostPlatform=alpha-unknown-linux
  98         TargetPlatform=alpha-unknown-linux
  99         BuildPlatform=alpha-unknown-linux
 100         HostPlatform_CPP='alpha_unknown_linux'
 101         HostArch_CPP='alpha'
 102         HostVendor_CPP='unknown'
 103         HostOS_CPP='linux'
 104         ;;
 105 alpha*-unknown-freebsd*)
 106         HostPlatform=alpha-unknown-freebsd
 107         TargetPlatform=alpha-unknown-freebsd
 108         BuildPlatform=alpha-unknown-freebsd
 109         HostPlatform_CPP='alpha_unknown_freebsd'
 110         HostArch_CPP='alpha'
 111         HostVendor_CPP='unknown'
 112         HostOS_CPP='freebsd'
 113         ;;
 114 hppa1.1-hp-hpux*)
 115         HostPlatform=hppa1.1-hp-hpux  # canonicalise for our purposes (hack)
 116         TargetPlatform=hppa1.1-hp-hpux
 117         BuildPlatform=hppa1.1-hp-hpux
 118         HostPlatform_CPP='hppa1_1_hp_hpux'
 119         HostArch_CPP='hppa1_1'
 120         HostVendor_CPP='hp'
 121         HostOS_CPP='hpux'
 122         ;;
 123 i[[3456]]86-*-linuxaout*)
 124         HostPlatform=i386-unknown-linuxaout   # hack again
 125         TargetPlatform=i386-unknown-linuxaout
 126         BuildPlatform=i386-unknown-linuxaout
 127         HostPlatform_CPP='i386_unknown_linuxaout'
 128         HostArch_CPP='i386'
 129         HostVendor_CPP='unknown'
 130         HostOS_CPP='linuxaout'
 131         ;;
 132 i[[3456]]86-*-linux*)
 133         HostPlatform=i386-unknown-linux # hack again
 134         TargetPlatform=i386-unknown-linux
 135         BuildPlatform=i386-unknown-linux
 136         HostPlatform_CPP='i386_unknown_linux'
 137         HostArch_CPP='i386'
 138         HostVendor_CPP='unknown'
 139         HostOS_CPP='linux'
 140         ;;
 141 i[[3456]]86-*-freebsd[[3-9]]*) # FreeBSD 3.0+ uses ELF
 142         HostPlatform=i386-unknown-freebsd # hack again
 143         TargetPlatform=i386-unknown-freebsd
 144         BuildPlatform=i386-unknown-freebsd
 145         HostPlatform_CPP='i386_unknown_freebsd'
 146         HostArch_CPP='i386'
 147         HostVendor_CPP='unknown'
 148         HostOS_CPP='freebsd'
 149         ;;
 150 i[[3456]]86-*-freebsd2*) # Older FreeBSDs are a.out
 151         HostPlatform=i386-unknown-freebsd2 # hack again
 152         TargetPlatform=i386-unknown-freebsd2
 153         BuildPlatform=i386-unknown-freebsd2
 154         HostPlatform_CPP='i386_unknown_freebsd2'
 155         HostArch_CPP='i386'
 156         HostVendor_CPP='unknown'
 157         HostOS_CPP='freebsd2'
 158         ;;
 159 i[[3456]]86-*-netbsd*)
 160         HostPlatform=i386-unknown-netbsd # hack again
 161         TargetPlatform=i386-unknown-netbsd
 162         BuildPlatform=i386-unknown-netbsd
 163         HostPlatform_CPP='i386_unknown_netbsd'
 164         HostArch_CPP='i386'
 165         HostVendor_CPP='unknown'
 166         HostOS_CPP='netbsd'
 167         ;;
 168 i[[3456]]86-*-openbsd*)
 169         HostPlatform=i386-unknown-openbsd # hack again
 170         TargetPlatform=i386-unknown-openbsd
 171         BuildPlatform=i386-unknown-openbsd
 172         HostPlatform_CPP='i386_unknown_openbsd'
 173         HostArch_CPP='i386'
 174         HostVendor_CPP='unknown'
 175         HostOS_CPP='openbsd'
 176         ;;
 177 i[[3456]]86-*-solaris2*)
 178         HostPlatform=i386-unknown-solaris2 # hack again
 179         TargetPlatform=i386-unknown-solaris2
 180         BuildPlatform=i386-unknown-solaris2
 181         HostPlatform_CPP='i386_unknown_solaris2'
 182         HostArch_CPP='i386'
 183         HostVendor_CPP='unknown'
 184         HostOS_CPP='solaris2'
 185         ;;
 186 i[[3456]]86-*-cygwin*)
 187         HostPlatform=i386-unknown-cygwin32 # hack again
 188         TargetPlatform=i386-unknown-cygwin32
 189         BuildPlatform=i386-unknown-cygwin32
 190         HostPlatform_CPP='i386_unknown_cygwin32'
 191         HostArch_CPP='i386'
 192         HostVendor_CPP='unknown'
 193         HostOS_CPP='cygwin32'
 194         exeext='.exe'
 195         ;;
 196 i[[3456]]86-*-mingw32*)
 197         HostPlatform=i386-unknown-mingw32 # hack again
 198         TargetPlatform=i386-unknown-mingw32
 199         BuildPlatform=i386-unknown-mingw32
 200         HostPlatform_CPP='i386_unknown_mingw32'
 201         HostArch_CPP='i386'
 202         HostVendor_CPP='unknown'
 203         HostOS_CPP='mingw32'
 204         exeext='.exe'
 205         ;;
 206 ia64-*-linux*)
 207         HostPlatform=ia64-unknown-linux # hack again
 208         TargetPlatform=ia64-unknown-linux
 209         BuildPlatform=ia64-unknown-linux
 210         HostPlatform_CPP='ia64_unknown_linux'
 211         HostArch_CPP='ia64'
 212         HostVendor_CPP='unknown'
 213         HostOS_CPP='linux'
 214         ;;
 215 m68k-next-nextstep2)
 216         HostPlatform_CPP='m68k_next_nextstep2'
 217         HostArch_CPP='m68k'
 218         HostVendor_CPP='next'
 219         HostOS_CPP='nextstep2'
 220         ;;
 221 m68k-next-nextstep3)
 222         HostPlatform_CPP='m68k_next_nextstep3'
 223         HostArch_CPP='m68k'
 224         HostVendor_CPP='next'
 225         HostOS_CPP='nextstep3'
 226         ;;
 227 i[[3456]]86-next-nextstep3)
 228         HostPlatform=i386-next-nextstep3 # hack again
 229         TargetPlatform=i386-next-nextstep3
 230         BuildPlatform=i386-next-nextstep3
 231         HostPlatform_CPP='i386_next_nextstep3'
 232         HostArch_CPP='i386'
 233         HostVendor_CPP='next'
 234         HostOS_CPP='nextstep3'
 235         ;;
 236 m68k-*-openbsd*)
 237         HostPlatform=m68k-unknown-openbsd
 238         TargetPlatform=m68k-unknown-openbsd
 239         BuildPlatform=m68k-unknown-openbsd
 240         HostPlatform_CPP='m68k_unknown_openbsd'
 241         HostArch_CPP='m68k'
 242         HostVendor_CPP='unknown'
 243         HostOS_CPP='openbsd'
 244         ;;
 245 m68k-sun-sunos4*)
 246         HostPlatform=m68k-sun-sunos4
 247         TargetPlatform=m68k-sun-sunos4 #hack
 248         BuildPlatform=m68k-sun-sunos4 #hack
 249         HostPlatform_CPP='m68k_sun_sunos4'
 250         HostArch_CPP='m68k'
 251         HostVendor_CPP='sun'
 252         HostOS_CPP='sunos4'
 253         ;;
 254 mips-dec-ultrix*)
 255         HostPlatform_CPP='mips_dec_ultrix'
 256         HostArch_CPP='mipsel'   # NB a little different
 257         HostVendor_CPP='dec'
 258         HostOS_CPP='ultrix'
 259         ;;
 260 mips-sgi-irix*)
 261         HostPlatform=mips-sgi-irix
 262         TargetPlatform=mips-sgi-irix #hack
 263         BuildPlatform=mips-sgi-irix #hack
 264         HostPlatform_CPP='mips_sgi_irix'
 265         HostArch_CPP='mipseb'   # NB a little different
 266         HostVendor_CPP='sgi'
 267         HostOS_CPP='irix'
 268         ;;
 269 rs6000-ibm-aix*)
 270         HostPlatform=rs6000-ibm-aix
 271         TargetPlatform=rs6000-ibm-aix #hack
 272         BuildPlatform=rs6000-ibm-aix #hack
 273         HostPlatform_CPP='rs6000_ibm_aix'
 274         HostArch_CPP='rs6000'
 275         HostVendor_CPP='ibm'
 276         HostOS_CPP='aix'
 277         ;;
 278 powerpc-ibm-aix*)
 279         HostPlatform=powerpc-ibm-aix
 280         TargetPlatform=powerpc-ibm-aix #hack
 281         BuildPlatform=powerpc-ibm-aix #hack
 282         HostPlatform_CPP='powerpc_ibm_aix'
 283         HostArch_CPP='powerpc'
 284         HostVendor_CPP='ibm'
 285         HostOS_CPP='aix'
 286         ;;
 287 powerpc-apple-darwin*)
 288         HostPlatform=powerpc-apple-darwin
 289         TargetPlatform=powerpc-apple-darwin #hack
 290         BuildPlatform=powerpc-apple-darwin #hack
 291         HostPlatform_CPP='powerpc_apple_darwin'
 292         HostArch_CPP='powerpc'
 293         HostVendor_CPP='apple'
 294         HostOS_CPP='darwin'
 295         ;;
 296 sparc-sun-sunos4*)
 297         HostPlatform=sparc-sun-sunos4
 298         TargetPlatform=sparc-sun-sunos4 #hack
 299         BuildPlatform=sparc-sun-sunos4 #hack
 300         HostPlatform_CPP='sparc_sun_sunos4'
 301         HostArch_CPP='sparc'
 302         HostVendor_CPP='sun'
 303         HostOS_CPP='sunos4'
 304         ;;
 305 sparc-sun-solaris2*)
 306         HostPlatform=sparc-sun-solaris2
 307         TargetPlatform=sparc-sun-solaris2 #hack
 308         BuildPlatform=sparc-sun-solaris2 #hack
 309         HostPlatform_CPP='sparc_sun_solaris2'
 310         HostArch_CPP='sparc'
 311         HostVendor_CPP='sun'
 312         HostOS_CPP='solaris2'
 313         ;;
 314 *)
 315         echo "Unrecognised platform: $HostPlatform"
 316         exit 1
 317         ;;
 318 esac
 319 echo "Canonicalised to: $HostPlatform"
 320 test  x"$HostPlatform" != x"$TargetPlatform" && echo "Target platform set to $TargetPlatform"
 321 test  x"$BuildPlatform" != x"$HostPlatform"  && echo "Build platform set to $BuildPlatform"
 322
 323 BuildPlatform_CPP=$HostPlatform_CPP
 324 TargetPlatform_CPP=$HostPlatform_CPP
 325 BuildArch_CPP=$HostArch_CPP
 326 TargetArch_CPP=$HostArch_CPP
 327 BuildOS_CPP=$HostOS_CPP
 328 HostOS_Full=$host_os
 329 TargetOS_CPP=$HostOS_CPP
 330 BuildVendor_CPP=$HostVendor_CPP
 331 TargetVendor_CPP=$HostVendor_CPP
 332
 333 dnl Cannot afford all these SUBSTs (because of braindead seds w/ 99 cmd limits)
 334 dnl AC_SUBST(BuildPlatform)
 335
 336 AC_SUBST(HostPlatform)
 337 AC_SUBST(TargetPlatform)
 338 AC_SUBST(HostPlatform_CPP)
 339 dnl AC_SUBST(BuildPlatform_CPP)
 340 dnl AC_SUBST(TargetPlatform_CPP)
 341
 342 AC_SUBST(HostArch_CPP)
 343 dnl AC_SUBST(BuildArch_CPP)
 344 dnl AC_SUBST(TargetArch_CPP)
 345
 346 AC_SUBST(HostOS_CPP)
 347 AC_SUBST(HostOS_Full)
 348 dnl AC_SUBST(BuildOS_CPP)
 349 dnl AC_SUBST(TargetOS_CPP)
 350
 351 AC_SUBST(HostVendor_CPP)
 352 dnl AC_SUBST(BuildVendor_CPP)
 353 dnl AC_SUBST(TargetVendor_CPP)
 354
 355 AC_SUBST(exeext)
 356
 357 #
 358 # The native format for 'hardtop' (i.e., right kind of slashes on a Win32 box).
 359 # (but with b-slashes being escaped).
 360 case $HostPlatform in
 361   i386-unknown-mingw32 | i386-unknown-cygwin32)
 362         # get rid off /cygdrive/ prefix
 363         hardtop=`echo ${hardtop} | sed -e 's%^/cygdrive/\(.\)/%\1:/%' `
 364         hardtop_plat=`cygpath -w ${hardtop} | sed -e 's@\\\\@\\\\\\\\@g' `
 365         ;;
 366   *)
 367         hardtop_plat=${hardtop}
 368         ;;
 369 esac
 370 AC_SUBST(hardtop)
 371 AC_SUBST(hardtop_plat)
 372
 373 dnl --------------------------------------------------------------
 374 dnl * Project specific configuration options
 375 dnl --------------------------------------------------------------
 376 dnl What follows is a bunch of options that can either be configured
 377 dnl through command line options to the configure script or by
 378 dnl supplying defns in the build tree's mk/build.mk. Having the option to
 379 dnl use either is considered a Feature.
 380
 381 dnl ** What command to use to compile compiler sources ?
 382 dnl --------------------------------------------------------------
 383
 384 AC_ARG_WITH(ghc,
 385 [  --with-ghc=<haskell compiler>
 386         Use a command different from 'ghc' to compile GHC-specific Haskell code
 387             (including GHC itself).
 388 ],
 389 [ WithGhc="$withval" ],
 390 [
 391   if test "$GHC" = ""; then
 392     AC_PATH_PROG(GHC,ghc)
 393   fi
 394   WithGhc=$GHC
 395 ]
 396 )
 397 AC_SUBST(WithGhc)
 398
 399 AC_ARG_WITH(hc,
 400 [  --with-hc=<haskell compiler>
 401         Use a command different from 'ghc' to compile generic Haskell code.
 402 ],
 403 [WithHc="$withval"],
 404 [WithHc=$WithGhc]
 405 )
 406 AC_SUBST(WithHc)
 407
 408 if test "$WithGhc" != ""; then
 409   FPTOOLS_GHC_VERSION([GhcVersion], [GhcMajVersion], [GhcMinVersion], [GhcPatchLevel])dnl
 410   AC_SUBST(GhcVersion)dnl
 411   AC_SUBST(GhcMajVersion)dnl
 412   AC_SUBST(GhcMinVersion)dnl
 413   AC_SUBST(GhcPatchLevel)dnl
 414 fi
 415
 416 AC_PATH_PROGS(NHC,nhc nhc98)
 417 AC_PATH_PROG(HBC,hbc)
 418
 419 dnl ** Which gcc to use?
 420 dnl --------------------------------------------------------------
 421 AC_ARG_WITH(gcc,
 422 [  --with-gcc=<gcc command>
 423         Use a different command instead of 'gcc' for the GNU C compiler.
 424 ],
 425 [WhatGccIsCalled="$withval"
 426  CC="$withval"],
 427 [WhatGccIsCalled="gcc"]
 428 )
 429 AC_SUBST(WhatGccIsCalled)
 430
 431 dnl ** Booting from .hc files?
 432 dnl --------------------------------------------------------------
 433 AC_ARG_ENABLE(hc-boot,
 434 [  --enable-hc-boot
 435         Boot the Glasgow Haskell Compiler from intermediate .hc files.
 436         (This option is mostly of interest to porters.)
 437 ],
 438 [BootingFromHc=YES],
 439 [BootingFromHc=NO]
 440 )
 441 AC_SUBST(BootingFromHc)
 442
 443 dnl ** Booting from unregisterised .hc files?
 444 dnl --------------------------------------------------------------
 445 AC_ARG_ENABLE(hc-boot-unregisterised,
 446 [  --enable-hc-boot-unregisterised
 447         With --enable-hc-boot, treat the intermediate .hc files as
 448         unregisterised rather than registerised code.
 449         (This option is mostly of interest to porters.)
 450 ],
 451 [BootingFromUnregisterisedHc=YES],
 452 [BootingFromUnregisterisedHc=NO]
 453 )
 454 AC_SUBST(BootingFromUnregisterisedHc)
 455
 456 if test "$BootingFromHc" = "NO"; then
 457 if test "$BootingFromUnregisterisedHc" = "YES"; then
 458 AC_MSG_ERROR([--enable-hc-boot-unregisterised requires --enable-hc-boot.])
 459 fi;
 460 fi;
 461
 462
 463 dnl ** Enable multi-thread friendly RTS?
 464 dnl --------------------------------------------------------------
 465 AC_ARG_ENABLE(threaded-rts,
 466 [  --enable-threaded-rts
 467         Support better interop with OS threads.
 468 ],
 469 [ThreadedRts=YES],
 470 [ThreadedRts=NO]
 471 )
 472 AC_SUBST(ThreadedRts)
 473
 474 dnl ** Enable the construction of Win32 DLLs?
 475 dnl --------------------------------------------------------------
 476 AC_ARG_ENABLE(win32-dlls,
 477 [  --enable-win32-dlls
 478         If on a Win32 platform running mingw32/cygwin, enable the
 479         construction of DLLs containing ghc-compiled code.
 480 ],
 481 [
 482 case $HostOS_CPP in
 483 cygwin32) ;;
 484 mingw32)  ;;
 485 *)    echo "Unrecognised win32 platform: $HostPlatform"
 486       exit 1
 487       ;;
 488 esac
 489 EnableWin32DLLs=YES
 490 ],
 491 [EnableWin32DLLs=NO]
 492 )
 493 AC_SUBST(EnableWin32DLLs)
 494 if test x"$EnableWin32DLLs" = "xYES" ; then
 495  AC_DEFINE(HAVE_WIN32_DLL_SUPPORT)
 496 fi
 497
 498 dnl ** Enable the building of the OpenGL/GLUT binding in hslibs?
 499 dnl --------------------------------------------------------------
 500 AC_ARG_ENABLE(hopengl,
 501 [  --enable-hopengl
 502         Build HOpenGL, a Haskell binding for OpenGL/GLUT, too.
 503         (This option is only relevant when hslibs are built.)
 504 ],
 505 [GhcLibsWithHOpenGL=YES],
 506 [GhcLibsWithHOpenGL=NO]
 507 )
 508 AC_SUBST(GhcLibsWithHOpenGL)
 509
 510 dnl ** Use a specific version of the GLUT API
 511 dnl --------------------------------------------------------------
 512 AC_ARG_WITH(glut-api,
 513 [  --with-glut-api=<version>
 514         Use a specific version of the GLUT API when building HOpenGL.
 515 ])
 516 test -n "$with_glut_api"  && CPPFLAGS="$CPPFLAGS -DGLUT_API_VERSION=$with_glut_api"
 517
 518
 519 dnl ** Use a specific version of the GLUT API
 520 dnl --------------------------------------------------------------
 521 AC_ARG_WITH(glut-xlib,
 522 [  --with-glut-xlib=<version>
 523         Use a specific version of the GLUT Xlib implementation when building HOpenGL.
 524 ])
 525 test -n "$with_glut_xlib" && CPPFLAGS="$CPPFLAGS -DGLUT_XLIB_IMPLEMENTATION=$with_glut_xlib"
 526
 527
 528
 529
 530 dnl --------------------------------------------------------------
 531 dnl End of configure script option section
 532 dnl --------------------------------------------------------------
 533
 534
 535 dnl --------------------------------------------------------------
 536 dnl * General configuration checks
 537 dnl --------------------------------------------------------------
 538
 539 dnl ** does #! work?
 540 AC_SYS_INTERPRETER()
 541
 542 dnl ** look for `perl', but only in /bin on Windows
 543 case $HostOS_CPP in
 544 cygwin32|mingw32)
 545       AC_CHECK_PROG(PerlCmd,perl,/bin/perl,,/bin)
 546       if test -z "$PerlCmd"; then
 547          echo "You must install the version of Perl shipped with GHC"
 548          echo "(or a compatible one) in /bin."
 549          exit 1
 550       fi
 551    ;;
 552 *)
 553    AC_PATH_PROG(PerlCmd,perl)
 554    if test -z "$PerlCmd"; then
 555       echo "You must install perl before you can continue"
 556       echo "Perhaps it is already installed, but not in your PATH?"
 557       exit 1
 558    else
 559    FPTOOLS_CHECK_PERL_VERSION
 560    fi
 561    ;;
 562 esac
 563
 564 dnl ** does #! path/to/perl work? (sometimes it's too long...)
 565 FPTOOLS_SHEBANG_PERL
 566
 567 dnl ** look for GCC and find out which version
 568 dnl     Figure out which C compiler to use.  Gcc is preferred.
 569 dnl     If gcc, make sure it's at least 2.1
 570 dnl
 571 AC_PROG_CC
 572 FPTOOLS_HAVE_GCC
 573
 574 dnl ** figure out how to invoke cpp directly (gcc -E is no good)
 575 AC_PROG_CPP
 576
 577 dnl ** Without optimization some INLINE trickery fails for GHCi
 578 SRC_CC_OPTS="-O"
 579
 580 dnl ** Try to add -mno-cygwin to the C compiler options for mingw32 targets
 581 if test x"$TargetOS_CPP" = x"mingw32"; then
 582   FPTOOLS_CC_FLAG(-mno-cygwin,CC_SUPPORTS_MNO_CYGWIN)
 583   SRC_CC_OPTS="$CC_SUPPORTS_MNO_CYGWIN $SRC_CC_OPTS"
 584   CPPFLAGS="$CC_SUPPORTS_MNO_CYGWIN $CPPFLAGS"
 585 fi
 586 AC_SUBST(SRC_CC_OPTS)
 587
 588 dnl ** figure out how to do context diffs
 589 FPTOOLS_PROG_DIFF
 590
 591 dnl ** Find find command (for Win32's benefit)
 592 FPTOOLS_FIND_FIND
 593
 594 dnl ** look for a decent parser generator (bison preferred)
 595 dnl (FPTOOLS_PROG_YACCY is AC_PROG_YACC, but with some extra testing
 596 dnl  on the suitability of the 'yacc' returned.)
 597 FPTOOLS_PROG_YACCY
 598
 599 dnl ** Find lex command (lex or flex) - *doesn't* use autoconf's
 600 dnl    AC_PROG_LEX, since it doesn't actually check whether 'lex'
 601 dnl    exists if 'flex' doesn't.
 602 AC_PROG_LEX_STRICT
 603
 604 dnl ** figure out how to do a BSD-ish install
 605 AC_PROG_INSTALL
 606
 607 dnl If you can run configure, you certainly have /bin/sh
 608 AC_DEFINE(HAVE_BIN_SH)
 609
 610 dnl ** how to invoke `ar' and `ranlib'
 611 FPTOOLS_PROG_AR_AND_RANLIB
 612
 613 dnl ** Check to see whether ln -s works
 614 AC_PROG_LN_S
 615
 616
 617 dnl ** Find the path to sed
 618 AC_PATH_PROG(SedCmd,sed)
 619
 620
 621 dnl ** check for time command
 622 AC_PATH_PROG(TimeCmd,time)
 623
 624
 625 dnl ** check for tar
 626 dnl   if GNU tar is named gtar, look for it first.
 627 AC_PATH_PROGS(TarCmd,gtar tar,tar)
 628
 629 dnl ** check for gzip/compress
 630 AC_PATH_PROGS(CompressCmd,gzip compress,gzip)
 631
 632 dnl ** check for jade/openjade & determine a working catalog
 633 AC_PATH_PROGS(JadeCmd,openjade jade,jade)
 634 FPTOOLS_DOCBOOK_CATALOG(Catalog, $JadeCmd, docs/fptools-both.dsl,
 635                         /etc/sgml/catalog /etc/sgml.catalog /usr/share/sgml/CATALOG.docbkdsl /usr/local/share/sgml/catalog glafp-utils/docbook/CATALOG*)
 636 if test -z "$Catalog"; then
 637   AC_MSG_RESULT([Warning: You will not be able to build the documentation.])
 638 fi
 639 case $Catalog in
 640    yes) # assume it is provided by other means (e.g., SGML_CATALOG_FILES env var).
 641         Catalog=
 642         ;;
 643    glafp*)
 644         case $HostOS_CPP in
 645            mingw32)
 646               Catalog=`cygpath -w $hardtop/$Catalog`
 647               ;;
 648            *) Catalog=$hardtop/$Catalog
 649               ;;
 650         esac
 651    ;;
 652 esac
 653 AC_SUBST(Catalog)
 654
 655 compress_nm=`basename $CompressCmd`
 656 if test x"$compress_nm" = xgzip; then
 657   CompressCmd="$CompressCmd -d"
 658   CompressSuffix="gz"
 659 else
 660   CompressSuffix="Z"
 661 fi
 662 AC_SUBST(CompressCmd)
 663 AC_SUBST(CompressSuffix)
 664
 665 AC_ARG_ENABLE(src-tree-happy,
 666 [  --enable-src-tree-happy
 667         Build and use source tree (fptools/happy) version of happy.
 668 ],
 669 [UseSrcTreeHappy=YES],
 670 [UseSrcTreeHappy=NO]
 671 )
 672 dnl ** check for installed happy binary + version
 673 dnl    (don't do it if we're booting from .hc files though.)
 674 if test "$BootingFromHc" = "NO"; then
 675 FPTOOLS_HAPPY
 676 fi;
 677
 678 AC_ARG_ENABLE(src-tree-haddock,
 679 [  --enable-src-tree-haddock
 680         Build and use source tree (fptools/haddock) version of haddock.
 681 ],
 682 [UseSrcTreeHaddock=YES],
 683 [UseSrcTreeHaddock=NO]
 684 )
 685 dnl ** check for installed haddock
 686 FPTOOLS_HADDOCK
 687
 688 dnl --------------------------------------------------
 689 dnl ### program checking section ends here ###
 690 dnl --------------------------------------------------
 691
 692 dnl --------------------------------------------------
 693 dnl * Platform header file and syscall feature tests
 694 dnl ### checking the state of the local header files and syscalls ###
 695
 696 dnl ** check for full ANSI header (.h) files
 697 AC_HEADER_STDC
 698
 699 dnl ** check for specific header (.h) files that we are interested in
 700 AC_CHECK_HEADERS(Files.h arpa/inet.h assert.h console.h ctype.h dirent.h errno.h fcntl.h float.h ftw.h grp.h ieee754.h inttypes.h limits.h malloc.h memory.h nlist.h pascal.h pwd.h sgtty.h siginfo.h signal.h stat.h stdint.h stdlib.h stddef.h stdarg.h string.h sys/fault.h sys/file.h sys/ioctl.h sys/limits.h sys/mman.h sys/param.h sys/procfs.h sys/resource.h sys/signal.h sys/socket.h netdb.h netinet/in.h netinet/tcp.h sys/stat.h sys/syscall.h sys/time.h sys/timeb.h sys/timers.h sys/times.h sys/types.h sys/un.h sys/utsname.h sys/vadvise.h sys/wait.h termio.h termios.h time.h types.h unistd.h utime.h values.h vfork.h bfd.h winsock.h pthread.h sys/uio.h)
 701
 702 AC_CHECK_HEADER(readline/readline.h, HaveReadlineReadlineH=YES, HaveReadlineReadlineH=NO)
 703 AC_CHECK_HEADER(readline/history.h, HaveReadlineHistoryH=YES, HaveReadlineHistoryH=NO)
 704
 705 if test $HaveReadlineReadlineH = YES && test $HaveReadlineHistoryH = YES ; then
 706   HaveReadlineHeaders=YES
 707   AC_DEFINE(HAVE_READLINE_HEADERS,1)
 708 else
 709   HaveReadlineHeaders=NO
 710   AC_DEFINE(HAVE_READLINE_HEADERS,0)
 711 fi
 712 AC_SUBST(HaveReadlineHeaders)
 713
 714 dnl ** check for DOS include files
 715 AC_CHECK_HEADERS(dos.h conio.h io.h std.h)
 716
 717 dnl ** check for Windows include files
 718 AC_CHECK_HEADERS(windows.h)
 719
 720 dnl ** check for OpenGL include files
 721 AC_CHECK_HEADERS(GL/gl.h)
 722
 723 dnl ** check if it is safe to include both <time.h> and <sys/time.h>
 724 AC_HEADER_TIME
 725
 726 dnl dynamic loading include files
 727 AC_CHECK_HEADERS(dlfcn.h dl.h)
 728
 729 dnl ** check for farcalloc (in bcc)
 730 AC_CHECK_HEADER(alloc.h,AC_CHECK_FUNCS(farcalloc))
 731
 732 dnl ** check for valloc (in sunos, solaris, mips, amiga, next, minix, ultrix)
 733 AC_CHECK_HEADER(malloc.h,AC_CHECK_FUNCS(valloc))
 734
 735 dnl ** check for POSIX regex
 736 HavePosixRegex=NO
 737 AC_CHECK_HEADER(regex.h,AC_CHECK_FUNC(regcomp, HavePosixRegex=YES))
 738 AC_SUBST(HavePosixRegex)
 739
 740 dnl ** how do we get a timezone name, and UTC offset ?
 741 AC_STRUCT_TIMEZONE
 742
 743 dnl ** what's the type of timezone?
 744 FPTOOLS_HAVE_TIMEZONE
 745 FPTOOLS_TYPE_TIMEZONE
 746
 747 dnl ** do we have altzone?
 748 FPTOOLS_ALTZONE
 749
 750 dnl ** does struct stat contain st_blksize?
 751 AC_STRUCT_ST_BLKSIZE
 752
 753 dnl ** do we have long longs?
 754 FPTOOLS_C_LONG_LONG
 755
 756 dnl ** check what fields struct msghdr contains
 757 FPTOOLS_MSGHDR_MSG_ACCRIGHTS
 758 FPTOOLS_MSGHDR_MSG_CONTROL
 759
 760 dnl ** what are the sizes of various types
 761 dnl    (these must come before GHC_CHECK_ALIGNMENT)
 762 AC_CHECK_SIZEOF(char,               1)
 763 AC_CHECK_SIZEOF(double,             8)
 764 AC_CHECK_SIZEOF(float,              4)
 765 AC_CHECK_SIZEOF(int,                4)
 766 AC_CHECK_SIZEOF(long,               4)
 767 if test "$fptools_cv_have_long_long" = yes; then
 768 AC_CHECK_SIZEOF(long long,          8)
 769 fi
 770 AC_CHECK_SIZEOF(short,              2)
 771 AC_CHECK_SIZEOF(unsigned char,      1)
 772 AC_CHECK_SIZEOF(unsigned int,       4)
 773 AC_CHECK_SIZEOF(unsigned long,      4)
 774 if test "$fptools_cv_have_long_long" = yes; then
 775 AC_CHECK_SIZEOF(unsigned long long, 8)
 776 fi
 777 AC_CHECK_SIZEOF(unsigned short,     2)
 778 AC_CHECK_SIZEOF(void *,             4)
 779
 780 dnl ** what are alignment constraints on various types
 781 FPTOOLS_CHECK_ALIGNMENT(char)
 782 FPTOOLS_CHECK_ALIGNMENT(double)
 783 FPTOOLS_CHECK_ALIGNMENT(float)
 784 FPTOOLS_CHECK_ALIGNMENT(int)
 785 FPTOOLS_CHECK_ALIGNMENT(long)
 786 if test "$fptools_cv_have_long_long" = yes; then
 787 FPTOOLS_CHECK_ALIGNMENT(long long)
 788 fi
 789 FPTOOLS_CHECK_ALIGNMENT(short)
 790 FPTOOLS_CHECK_ALIGNMENT(unsigned char)
 791 FPTOOLS_CHECK_ALIGNMENT(unsigned int)
 792 FPTOOLS_CHECK_ALIGNMENT(unsigned long)
 793 if test "$fptools_cv_have_long_long" = yes; then
 794 FPTOOLS_CHECK_ALIGNMENT(unsigned long long)
 795 fi
 796 FPTOOLS_CHECK_ALIGNMENT(unsigned short)
 797 FPTOOLS_CHECK_ALIGNMENT(void *)
 798
 799 dnl ** map standard C types and ISO types to Haskell types
 800 FPTOOLS_CHECK_HTYPE(char)
 801 FPTOOLS_CHECK_HTYPE(signed char)
 802 FPTOOLS_CHECK_HTYPE(unsigned char)
 803 FPTOOLS_CHECK_HTYPE(short)
 804 FPTOOLS_CHECK_HTYPE(unsigned short)
 805 FPTOOLS_CHECK_HTYPE(int)
 806 FPTOOLS_CHECK_HTYPE(unsigned int)
 807 FPTOOLS_CHECK_HTYPE(long)
 808 FPTOOLS_CHECK_HTYPE(unsigned long)
 809 if test "$fptools_cv_have_long_long" = yes; then
 810 FPTOOLS_CHECK_HTYPE(long long)
 811 FPTOOLS_CHECK_HTYPE(unsigned long long)
 812 fi
 813 FPTOOLS_CHECK_HTYPE(float)
 814 FPTOOLS_CHECK_HTYPE(double)
 815 FPTOOLS_CHECK_HTYPE(ptrdiff_t)
 816 FPTOOLS_CHECK_HTYPE(size_t)
 817 FPTOOLS_CHECK_HTYPE(wchar_t)
 818 dnl Int32 is a HACK for non-ISO C compilers
 819 FPTOOLS_CHECK_HTYPE(sig_atomic_t, Int32)
 820 FPTOOLS_CHECK_HTYPE(clock_t)
 821 FPTOOLS_CHECK_HTYPE(time_t)
 822 FPTOOLS_CHECK_HTYPE(dev_t, Word32)
 823 FPTOOLS_CHECK_HTYPE(ino_t)
 824 FPTOOLS_CHECK_HTYPE(mode_t)
 825 FPTOOLS_CHECK_HTYPE(off_t)
 826 FPTOOLS_CHECK_HTYPE(pid_t)
 827 FPTOOLS_CHECK_HTYPE(gid_t)
 828 FPTOOLS_CHECK_HTYPE(uid_t)
 829 FPTOOLS_CHECK_HTYPE(cc_t)
 830 FPTOOLS_CHECK_HTYPE(speed_t)
 831 FPTOOLS_CHECK_HTYPE(tcflag_t)
 832 FPTOOLS_CHECK_HTYPE(nlink_t)
 833 FPTOOLS_CHECK_HTYPE(ssize_t)
 834
 835 dnl ** Map OpenGL data types to Haskell types
 836 if test $GhcLibsWithHOpenGL = YES ; then
 837 FPTOOLS_CHECK_HTYPE(GLboolean)
 838 FPTOOLS_CHECK_HTYPE(GLbyte)
 839 FPTOOLS_CHECK_HTYPE(GLubyte)
 840 FPTOOLS_CHECK_HTYPE(GLshort)
 841 FPTOOLS_CHECK_HTYPE(GLushort)
 842 FPTOOLS_CHECK_HTYPE(GLint)
 843 FPTOOLS_CHECK_HTYPE(GLuint)
 844 FPTOOLS_CHECK_HTYPE(GLsizei)
 845 FPTOOLS_CHECK_HTYPE(GLenum)
 846 FPTOOLS_CHECK_HTYPE(GLbitfield)
 847 FPTOOLS_CHECK_HTYPE(GLfloat)
 848 FPTOOLS_CHECK_HTYPE(GLclampf)
 849 FPTOOLS_CHECK_HTYPE(GLdouble)
 850 FPTOOLS_CHECK_HTYPE(GLclampd)
 851 fi
 852
 853 dnl ** can we open files in binary mode?
 854 FPTOOLS_O_BINARY
 855
 856 dnl ** check for GetModuleFileName and WinExec (windows only)
 857 dnl Old: AC_CHECK_FUNCS(WinExec GetModuleFileName)       dnl Windows
 858 dnl Doesn't work because the linker can't see the functions if
 859 dnl you omit the #include <windows.h>.  (I've no idea why not...)
 860
 861 FPTOOLS_TRY_LINK_NOWARN(,[
 862 #if HAVE_WINDOWS_H
 863 #include <windows.h>
 864 #endif
 865 main() {
 866   WinExec("",0);
 867   exit(0);
 868 }
 869 ],
 870 [have_winexec=1],
 871 [have_winexec=0])
 872 if test "$have_winexec" = "1"; then
 873 AC_DEFINE(HAVE_WINEXEC)
 874 fi
 875
 876 FPTOOLS_TRY_LINK_NOWARN(,[
 877 #if HAVE_WINDOWS_H
 878 #include <windows.h>
 879 #endif
 880 main() {
 881   char* dir;
 882   GetModuleFileName((HMODULE)0,dir,0);
 883   exit(0);
 884 }
 885 ],
 886 [have_getmodulefilename=1],
 887 [have_getmodulefilename=0])
 888 if test "$have_getmodulefilename" = "1"; then
 889 AC_DEFINE(HAVE_GETMODULEFILENAME)
 890 fi
 891
 892 dnl ** check return type of signal handlers
 893 dnl Foo: assumes we can use prototypes.
 894 dnl On BCC, signal handlers have type "int(void)", elsewhere its "void(int)".
 895 dnl AC_CACHE_CHECK([type of signal handlers], ac_cv_type_signal_handler,
 896 dnl [AC_TRY_COMPILE([#include <sys/types.h>
 897 dnl #include <signal.h>
 898 dnl #ifdef signal
 899 dnl #undef signal
 900 dnl #endif
 901 dnl void (*signal (int, void (*)(int)))(int);
 902 dnl ],
 903 dnl [int i;],
 904 dnl ac_cv_type_signal_handler=void_int,
 905 dnl ac_cv_type_signal_handler=int_void)])
 906 dnl if test "$ac_cv_type_signal_handler" = void_int; then
 907 dnl AC_DEFINE(VOID_INT_SIGNALS)
 908 dnl fi
 909
 910 dnl On BCC, signal handlers have type "int(void)", elsewhere its "void(int)".
 911 AC_TYPE_SIGNAL
 912 if test "$ac_cv_type_signal" = void; then
 913 AC_DEFINE(VOID_INT_SIGNALS)
 914 fi
 915
 916 dnl ** check for more functions
 917 AC_CHECK_FUNCS(strcasecmp _stricmp stricmp strcmpi)
 918 AC_CHECK_FUNCS(strcmp)
 919 AC_CHECK_FUNCS(realpath _fullpath)
 920 AC_CHECK_FUNCS(PBHSetVolSync macsystem)
 921 AC_CHECK_FUNCS(fgetpos fsetpos fseek ftell)
 922 AC_CHECK_FUNCS(vsnprintf _vsnprintf)
 923 AC_CHECK_FUNCS(snprintf  _snprintf )
 924 AC_CHECK_FUNCS(popen     _popen )
 925 AC_CHECK_FUNCS(pclose    _pclose )
 926
 927
 928 dnl ** check for specific library functions that we are interested in
 929 AC_CHECK_FUNCS(access ftime getclock getpagesize getrusage gettimeofday mktime mprotect readlink setitimer stat lstat symlink sysconf timelocal times vadvise vfork localtime_r gmtime_r readdir_r)
 930
 931 dnl ** check whether this machine has gmp3 installed
 932 AC_CHECK_LIB(gmp,  __gmpz_fdiv_qr, HaveLibGmp=YES; LibGmp=gmp,
 933   AC_CHECK_LIB(gmp3, __gmpz_fdiv_qr,  HaveLibGmp=YES; LibGmp=gmp3,
 934     HaveLibGmp=NO; LibGmp=not-installed))
 935 AC_SUBST(HaveLibGmp)
 936 AC_SUBST(LibGmp)
 937
 938 dnl ** check for mingwex library
 939 AC_CHECK_LIB(mingwex, closedir, HaveLibMingwEx=YES, HaveLibMingwEx=NO)
 940 AC_SUBST(HaveLibMingwEx)
 941
 942 if test $HaveLibMingwEx = YES ; then
 943   AC_DEFINE(HAVE_MINGWEX)
 944 fi
 945
 946 if test "$HaveLibGmp" = "NO"; then
 947 if test "$HostArch_CPP" = "ia64"; then
 948 AC_MSG_ERROR([You need to install libgmp (the in-tree version does not work on IA64).])
 949 fi;
 950 fi;
 951
 952 dnl ** check whether this machine has GNU regex in libc.
 953 FPTOOLS_REGEX_IN_LIBC
 954
 955 dnl ** check whether this machine has BFD and liberty installed (used for debugging)
 956 dnl    the order of these tests matters: bfd needs liberty
 957 AC_CHECK_LIB(iberty, xmalloc)
 958 AC_CHECK_LIB(bfd,    bfd_init)
 959
 960 dnl ** check for readline, for Hugs and hslibs' Readline
 961 dnl ncurses supersedes termcap and curses, but for compatibility,
 962 dnl we have to check for all...
 963 AC_CHECK_LIB(ncurses, tputs, HaveLibTermcap=YES; LibTermcap=ncurses,
 964   AC_CHECK_LIB(termcap, tputs, HaveLibTermcap=YES; LibTermcap=termcap,
 965     AC_CHECK_LIB(curses, tputs, HaveLibTermcap=YES; LibTermcap=curses,
 966       HaveLibTermcap=NO; LibTermcap=not-installed)))
 967
 968 if test $HaveLibTermcap = YES ; then
 969   LIBS="-l$LibTermcap $LIBS"
 970   AC_CHECK_LIB(readline, readline, HaveLibReadline=YES, HaveLibReadline=NO)
 971 fi
 972
 973 if test $HaveLibTermcap = YES && test x"$HaveLibReadline" = xYES ; then
 974   AC_DEFINE(HAVE_READLINE_LIBS,1)
 975   LibsReadline="readline $LibTermcap"
 976 else
 977   AC_DEFINE(HAVE_READLINE_LIBS,0)
 978   LibsReadline=
 979 fi
 980 AC_SUBST(LibsReadline)
 981
 982 if test "$HaveLibReadline"; then
 983   AC_CHECK_LIB(readline, rl_erase_empty_line,
 984     [AC_DEFINE(HAVE_READLINE_4, 1)],
 985     [AC_DEFINE(HAVE_READLINE_4, 0)])
 986   AC_CHECK_LIB(readline, rl_free_undo_list,
 987     [AC_DEFINE(HAVE_READLINE_4_2, 1)],
 988     [AC_DEFINE(HAVE_READLINE_4_2, 0)])
 989 else
 990   AC_DEFINE(HAVE_READLINE_4, 0)
 991   AC_DEFINE(HAVE_READLINE_4_2, 0)
 992 fi
 993
 994 dnl ** check for math library
 995 FPTOOLS_CHECK_LIBM()
 996 AC_SUBST(LIBM)
 997
 998 case $HostOS_CPP in
 999 cygwin32) ;;
1000 mingw32)  ;;
1001 *) AC_PATH_XTRA() ;;
1002 esac
1003
1004 FPTOOLS_HAVE_OPENGL
1005
1006 dnl ################################################################
1007 dnl Check for libraries
1008 dnl ################################################################
1009
1010 dnl ** check for libdl & RTLD_NEXT
1011
1012 AC_CHECK_LIB(dl, dlopen,
1013         [HaveLibDL=YES
1014          AC_DEFINE(HAVE_LIBDL)
1015          LIBS="$LIBS -ldl"],
1016         [HaveLibDL=NO])
1017 AC_CHECK_FUNCS(dlopen)
1018 AC_SUBST(HaveLibDL)
1019
1020 dnl ** sometimes RTLD_NEXT is hidden in #ifdefs we really don't wan to set
1021 AC_MSG_CHECKING(for RTLD_NEXT from dlfcn.h)
1022 AC_EGREP_CPP(yes,
1023 [
1024  #include <dlfcn.h>
1025  #ifdef RTLD_NEXT
1026         yes
1027  #endif
1028 ], [
1029   AC_MSG_RESULT(yes)
1030   AC_DEFINE(HAVE_RTLDNEXT)
1031   HaveRtldNext=YES
1032 ], [
1033   AC_MSG_RESULT(no)
1034   HaveRtldNext=NO
1035   ])
1036 AC_SUBST(HaveRtldNext)
1037
1038 dnl ** RTLD_LOCAL isn't available on cygwin or openbsd
1039 AC_MSG_CHECKING(for RTLD_LOCAL from dlfcn.h)
1040 AC_EGREP_CPP(yes,
1041 [
1042  #include <dlfcn.h>
1043  #ifdef RTLD_LOCAL
1044         yes
1045  #endif
1046 ], [
1047   AC_MSG_RESULT(yes)
1048   AC_DEFINE(HAVE_RTLDLOCAL)
1049   HaveRtldLocal=YES
1050 ], [
1051   AC_MSG_RESULT(no)
1052   HaveRtldLocal=NO
1053   ])
1054 AC_SUBST(HaveRtldLocal)
1055
1056 dnl ** RTLD_GLOBAL isn't available on openbsd
1057 AC_MSG_CHECKING(for RTLD_GLOBAL from dlfcn.h)
1058 AC_EGREP_CPP(yes,
1059 [
1060  #include <dlfcn.h>
1061  #ifdef RTLD_GLOBAL
1062         yes
1063  #endif
1064 ], [
1065   AC_MSG_RESULT(yes)
1066   AC_DEFINE(HAVE_RTLDGLOBAL)
1067   HaveRtldGlobal=YES
1068 ], [
1069   AC_MSG_RESULT(no)
1070   HaveRtldGlobal=NO
1071   ])
1072 AC_SUBST(HaveRtldGlobal)
1073
1074 dnl ** RTLD_NOW isn't available on openbsd
1075 AC_MSG_CHECKING(for RTLD_NOW from dlfcn.h)
1076 AC_EGREP_CPP(yes,
1077 [
1078  #include <dlfcn.h>
1079  #ifdef RTLD_NOW
1080         yes
1081  #endif
1082 ], [
1083   AC_MSG_RESULT(yes)
1084   AC_DEFINE(HAVE_RTLDNOW)
1085   HaveRtldNow=YES
1086 ], [
1087   AC_MSG_RESULT(no)
1088   HaveRtldNow=NO
1089   ])
1090 AC_SUBST(HaveRtldNow)
1091
1092 FPTOOLS_CHECK_LIB_NOWARN(m, atan)
1093
1094 dnl --------------------------------------------------
1095 dnl * test for GTK+
1096 dnl --------------------------------------------------
1097
1098 AC_PATH_PROGS(GTK_CONFIG, gtk-config gtk12-config)
1099 if test "$GTK_CONFIG" != ""; then
1100    AC_CACHE_CHECK([for version of GTK+], fptools_cv_gtk_version, [
1101         fptools_cv_gtk_version=`$GTK_CONFIG --version`
1102     ])
1103     GTK_VERSION=$fptools_cv_gtk_version
1104 else
1105     GTK_VERSION=
1106 fi
1107
1108 case $fptools_cv_gtk_version in
1109   1.[[23]].*) ;;
1110   *) AC_MSG_WARN([GTK+ not usable; need at least version 1.2])
1111      GTK_CONFIG=
1112      ;;
1113 esac
1114
1115 AC_SUBST(GTK_CONFIG)
1116 AC_SUBST(GTK_VERSION)
1117
1118 dnl --------------------------------------------------
1119 dnl * Miscellaneous feature tests
1120 dnl --------------------------------------------------
1121
1122 dnl ** can we get alloca?
1123 AC_FUNC_ALLOCA
1124
1125 dnl ** determine whether or not const works
1126 AC_C_CONST
1127
1128 dnl ** determine whether ANSI-function prototypes work?
1129 AC_C_PROTOTYPES
1130
1131 dnl ** are we big endian?
1132 AC_C_BIGENDIAN
1133 # Allay users' general fear of warnings of any kind.
1134 errprint(fptools configure script wizard sez: autoconf-2.50 or later should produce no warnings
1135 )
1136 errprint(if you are using 2.13 or earlier, you may get a (harmless) warning message.
1137 )
1138
1139 dnl ** check for leading underscores in symbol names
1140 FPTOOLS_UNDERSCORE
1141
1142 dnl ** how is the end of text section signalled?
1143 FPTOOLS_END_TEXT_SECTION
1144
1145 dnl ** how is the end of data section signalled?
1146 FPTOOLS_END_DATA_SECTION
1147
1148 dnl ** code before data?
1149 FPTOOLS_CODE_BEFORE_DATA
1150
1151 dnl ** check for ld, and whether ld has -x option
1152 AC_PATH_PROG(LdCmdRaw, ld)
1153 case $HostOS_CPP in
1154  mingw32) LdCmd=`cygpath -w ${LdCmdRaw} | sed -e 's@\\\\@/@g' `
1155            ;;
1156  *) LdCmd=${LdCmdRaw}
1157     ;;
1158 esac
1159 AC_SUBST(LdCmd)
1160 FPTOOLS_LD_X
1161
1162 AC_OUTPUT(mk/config.mk, echo timestamp > mk/stamp-h )