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 ObjectIO?
 499 dnl --------------------------------------------------------------
 500 AC_ARG_ENABLE(objectio,
 501 [  --enable-objectio
 502         Build ObjectIO, a portable GUI library for Haskell.
 503         (This option is only relevant when libraries are built.)
 504 ],
 505 [GhcLibsWithObjectIO=YES],
 506 [GhcLibsWithObjectIO=NO]
 507 )
 508 AC_SUBST(GhcLibsWithObjectIO)
 509
 510 dnl ** Enable the building of the OpenGL/GLUT binding in hslibs?
 511 dnl --------------------------------------------------------------
 512 AC_ARG_ENABLE(hopengl,
 513 [  --enable-hopengl
 514         Build HOpenGL, a Haskell binding for OpenGL/GLUT, too.
 515         (This option is only relevant when hslibs are built.)
 516 ],
 517 [GhcLibsWithHOpenGL=YES],
 518 [GhcLibsWithHOpenGL=NO]
 519 )
 520 AC_SUBST(GhcLibsWithHOpenGL)
 521
 522 dnl ** Use a specific version of the GLUT API
 523 dnl --------------------------------------------------------------
 524 AC_ARG_WITH(glut-api,
 525 [  --with-glut-api=<version>
 526         Use a specific version of the GLUT API when building HOpenGL.
 527 ])
 528 test -n "$with_glut_api"  && CPPFLAGS="$CPPFLAGS -DGLUT_API_VERSION=$with_glut_api"
 529
 530
 531 dnl ** Use a specific version of the GLUT API
 532 dnl --------------------------------------------------------------
 533 AC_ARG_WITH(glut-xlib,
 534 [  --with-glut-xlib=<version>
 535         Use a specific version of the GLUT Xlib implementation when building HOpenGL.
 536 ])
 537 test -n "$with_glut_xlib" && CPPFLAGS="$CPPFLAGS -DGLUT_XLIB_IMPLEMENTATION=$with_glut_xlib"
 538
 539
 540
 541
 542 dnl --------------------------------------------------------------
 543 dnl End of configure script option section
 544 dnl --------------------------------------------------------------
 545
 546
 547 dnl --------------------------------------------------------------
 548 dnl * General configuration checks
 549 dnl --------------------------------------------------------------
 550
 551 dnl ** does #! work?
 552 AC_SYS_INTERPRETER()
 553
 554 dnl ** look for `perl', but only in /bin on Windows
 555 case $HostOS_CPP in
 556 cygwin32|mingw32)
 557       AC_CHECK_PROG(PerlCmd,perl,/bin/perl,,/bin)
 558       if test -z "$PerlCmd"; then
 559          echo "You must install the version of Perl shipped with GHC"
 560          echo "(or a compatible one) in /bin."
 561          exit 1
 562       fi
 563    ;;
 564 *)
 565    AC_PATH_PROG(PerlCmd,perl)
 566    if test -z "$PerlCmd"; then
 567       echo "You must install perl before you can continue"
 568       echo "Perhaps it is already installed, but not in your PATH?"
 569       exit 1
 570    else
 571    FPTOOLS_CHECK_PERL_VERSION
 572    fi
 573    ;;
 574 esac
 575
 576 dnl ** does #! path/to/perl work? (sometimes it's too long...)
 577 FPTOOLS_SHEBANG_PERL
 578
 579 dnl ** look for GCC and find out which version
 580 dnl     Figure out which C compiler to use.  Gcc is preferred.
 581 dnl     If gcc, make sure it's at least 2.1
 582 dnl
 583 AC_PROG_CC
 584 FPTOOLS_HAVE_GCC
 585
 586 dnl ** figure out how to invoke cpp directly (gcc -E is no good)
 587 AC_PROG_CPP
 588
 589 dnl ** Without optimization some INLINE trickery fails for GHCi
 590 SRC_CC_OPTS="-O"
 591
 592 dnl ** Try to add -mno-cygwin to the C compiler options for mingw32 targets
 593 if test x"$TargetOS_CPP" = x"mingw32"; then
 594   FPTOOLS_CC_FLAG(-mno-cygwin,CC_SUPPORTS_MNO_CYGWIN)
 595   SRC_CC_OPTS="$CC_SUPPORTS_MNO_CYGWIN $SRC_CC_OPTS"
 596   CPPFLAGS="$CC_SUPPORTS_MNO_CYGWIN $CPPFLAGS"
 597 fi
 598 AC_SUBST(SRC_CC_OPTS)
 599
 600 dnl ** figure out how to do context diffs
 601 FPTOOLS_PROG_DIFF
 602
 603 dnl ** Find find command (for Win32's benefit)
 604 FPTOOLS_FIND_FIND
 605
 606 dnl ** look for a decent parser generator (bison preferred)
 607 dnl (FPTOOLS_PROG_YACCY is AC_PROG_YACC, but with some extra testing
 608 dnl  on the suitability of the 'yacc' returned.)
 609 FPTOOLS_PROG_YACCY
 610
 611 dnl ** Find lex command (lex or flex) - *doesn't* use autoconf's
 612 dnl    AC_PROG_LEX, since it doesn't actually check whether 'lex'
 613 dnl    exists if 'flex' doesn't.
 614 AC_PROG_LEX_STRICT
 615
 616 dnl ** figure out how to do a BSD-ish install
 617 AC_PROG_INSTALL
 618
 619 dnl If you can run configure, you certainly have /bin/sh
 620 AC_DEFINE(HAVE_BIN_SH)
 621
 622 dnl ** how to invoke `ar' and `ranlib'
 623 FPTOOLS_PROG_AR_AND_RANLIB
 624
 625 dnl ** Check to see whether ln -s works
 626 AC_PROG_LN_S
 627
 628
 629 dnl ** Find the path to sed
 630 AC_PATH_PROG(SedCmd,sed)
 631
 632
 633 dnl ** check for time command
 634 AC_PATH_PROG(TimeCmd,time)
 635
 636
 637 dnl ** check for tar
 638 dnl   if GNU tar is named gtar, look for it first.
 639 AC_PATH_PROGS(TarCmd,gtar tar,tar)
 640
 641 dnl ** check for gzip/compress
 642 AC_PATH_PROGS(CompressCmd,gzip compress,gzip)
 643
 644 dnl ** check for jade/openjade & determine a working catalog
 645 AC_PATH_PROGS(JadeCmd,openjade jade,jade)
 646 FPTOOLS_DOCBOOK_CATALOG(Catalog, $JadeCmd, docs/fptools-both.dsl,
 647                         /etc/sgml/catalog /etc/sgml.catalog /usr/share/sgml/CATALOG.docbkdsl /usr/local/share/sgml/catalog glafp-utils/docbook/CATALOG*)
 648 if test -z "$Catalog"; then
 649   AC_MSG_RESULT([Warning: You will not be able to build the documentation.])
 650 fi
 651 case $Catalog in
 652    yes) # assume it is provided by other means (e.g., SGML_CATALOG_FILES env var).
 653         Catalog=
 654         ;;
 655    glafp*)
 656         case $HostOS_CPP in
 657            mingw32)
 658               Catalog=`cygpath -w $hardtop/$Catalog`
 659               ;;
 660            *) Catalog=$hardtop/$Catalog
 661               ;;
 662         esac
 663    ;;
 664 esac
 665 AC_SUBST(Catalog)
 666
 667 compress_nm=`basename $CompressCmd`
 668 if test x"$compress_nm" = xgzip; then
 669   CompressCmd="$CompressCmd -d"
 670   CompressSuffix="gz"
 671 else
 672   CompressSuffix="Z"
 673 fi
 674 AC_SUBST(CompressCmd)
 675 AC_SUBST(CompressSuffix)
 676
 677 AC_ARG_ENABLE(src-tree-happy,
 678 [  --enable-src-tree-happy
 679         Build and use source tree (fptools/happy) version of happy.
 680 ],
 681 [UseSrcTreeHappy=YES],
 682 [UseSrcTreeHappy=NO]
 683 )
 684 dnl ** check for installed happy binary + version
 685 dnl    (don't do it if we're booting from .hc files though.)
 686 if test "$BootingFromHc" = "NO"; then
 687 FPTOOLS_HAPPY
 688 fi;
 689
 690 AC_ARG_ENABLE(src-tree-haddock,
 691 [  --enable-src-tree-haddock
 692         Build and use source tree (fptools/haddock) version of haddock.
 693 ],
 694 [UseSrcTreeHaddock=YES],
 695 [UseSrcTreeHaddock=NO]
 696 )
 697 dnl ** check for installed haddock
 698 FPTOOLS_HADDOCK
 699
 700 dnl --------------------------------------------------
 701 dnl ### program checking section ends here ###
 702 dnl --------------------------------------------------
 703
 704 dnl --------------------------------------------------
 705 dnl * Platform header file and syscall feature tests
 706 dnl ### checking the state of the local header files and syscalls ###
 707
 708 dnl ** check for full ANSI header (.h) files
 709 AC_HEADER_STDC
 710
 711 dnl ** check for specific header (.h) files that we are interested in
 712 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)
 713
 714 AC_CHECK_HEADER(readline/readline.h, HaveReadlineReadlineH=YES, HaveReadlineReadlineH=NO)
 715 AC_CHECK_HEADER(readline/history.h, HaveReadlineHistoryH=YES, HaveReadlineHistoryH=NO)
 716
 717 if test $HaveReadlineReadlineH = YES && test $HaveReadlineHistoryH = YES ; then
 718   HaveReadlineHeaders=YES
 719   AC_DEFINE(HAVE_READLINE_HEADERS,1)
 720 else
 721   HaveReadlineHeaders=NO
 722   AC_DEFINE(HAVE_READLINE_HEADERS,0)
 723 fi
 724 AC_SUBST(HaveReadlineHeaders)
 725
 726 dnl ** check for DOS include files
 727 AC_CHECK_HEADERS(dos.h conio.h io.h std.h)
 728
 729 dnl ** check for Windows include files
 730 AC_CHECK_HEADERS(windows.h)
 731
 732 dnl ** check for OpenGL include files
 733 AC_CHECK_HEADERS(GL/gl.h)
 734
 735 dnl ** check if it is safe to include both <time.h> and <sys/time.h>
 736 AC_HEADER_TIME
 737
 738 dnl dynamic loading include files
 739 AC_CHECK_HEADERS(dlfcn.h dl.h)
 740
 741 dnl ** check for farcalloc (in bcc)
 742 AC_CHECK_HEADER(alloc.h,AC_CHECK_FUNCS(farcalloc))
 743
 744 dnl ** check for valloc (in sunos, solaris, mips, amiga, next, minix, ultrix)
 745 AC_CHECK_HEADER(malloc.h,AC_CHECK_FUNCS(valloc))
 746
 747 dnl ** check for POSIX regex
 748 HavePosixRegex=NO
 749 AC_CHECK_HEADER(regex.h,AC_CHECK_FUNC(regcomp, HavePosixRegex=YES))
 750 AC_SUBST(HavePosixRegex)
 751
 752 dnl ** how do we get a timezone name, and UTC offset ?
 753 AC_STRUCT_TIMEZONE
 754
 755 dnl ** what's the type of timezone?
 756 FPTOOLS_HAVE_TIMEZONE
 757 FPTOOLS_TYPE_TIMEZONE
 758
 759 dnl ** do we have altzone?
 760 FPTOOLS_ALTZONE
 761
 762 dnl ** does struct stat contain st_blksize?
 763 AC_STRUCT_ST_BLKSIZE
 764
 765 dnl ** do we have long longs?
 766 FPTOOLS_C_LONG_LONG
 767
 768 dnl ** check what fields struct msghdr contains
 769 FPTOOLS_MSGHDR_MSG_ACCRIGHTS
 770 FPTOOLS_MSGHDR_MSG_CONTROL
 771
 772 dnl ** what are the sizes of various types
 773 dnl    (these must come before GHC_CHECK_ALIGNMENT)
 774 AC_CHECK_SIZEOF(char,               1)
 775 AC_CHECK_SIZEOF(double,             8)
 776 AC_CHECK_SIZEOF(float,              4)
 777 AC_CHECK_SIZEOF(int,                4)
 778 AC_CHECK_SIZEOF(long,               4)
 779 if test "$fptools_cv_have_long_long" = yes; then
 780 AC_CHECK_SIZEOF(long long,          8)
 781 fi
 782 AC_CHECK_SIZEOF(short,              2)
 783 AC_CHECK_SIZEOF(unsigned char,      1)
 784 AC_CHECK_SIZEOF(unsigned int,       4)
 785 AC_CHECK_SIZEOF(unsigned long,      4)
 786 if test "$fptools_cv_have_long_long" = yes; then
 787 AC_CHECK_SIZEOF(unsigned long long, 8)
 788 fi
 789 AC_CHECK_SIZEOF(unsigned short,     2)
 790 AC_CHECK_SIZEOF(void *,             4)
 791
 792 dnl ** what are alignment constraints on various types
 793 FPTOOLS_CHECK_ALIGNMENT(char)
 794 FPTOOLS_CHECK_ALIGNMENT(double)
 795 FPTOOLS_CHECK_ALIGNMENT(float)
 796 FPTOOLS_CHECK_ALIGNMENT(int)
 797 FPTOOLS_CHECK_ALIGNMENT(long)
 798 if test "$fptools_cv_have_long_long" = yes; then
 799 FPTOOLS_CHECK_ALIGNMENT(long long)
 800 fi
 801 FPTOOLS_CHECK_ALIGNMENT(short)
 802 FPTOOLS_CHECK_ALIGNMENT(unsigned char)
 803 FPTOOLS_CHECK_ALIGNMENT(unsigned int)
 804 FPTOOLS_CHECK_ALIGNMENT(unsigned long)
 805 if test "$fptools_cv_have_long_long" = yes; then
 806 FPTOOLS_CHECK_ALIGNMENT(unsigned long long)
 807 fi
 808 FPTOOLS_CHECK_ALIGNMENT(unsigned short)
 809 FPTOOLS_CHECK_ALIGNMENT(void *)
 810
 811 dnl ** map standard C types and ISO types to Haskell types
 812 FPTOOLS_CHECK_HTYPE(char)
 813 FPTOOLS_CHECK_HTYPE(signed char)
 814 FPTOOLS_CHECK_HTYPE(unsigned char)
 815 FPTOOLS_CHECK_HTYPE(short)
 816 FPTOOLS_CHECK_HTYPE(unsigned short)
 817 FPTOOLS_CHECK_HTYPE(int)
 818 FPTOOLS_CHECK_HTYPE(unsigned int)
 819 FPTOOLS_CHECK_HTYPE(long)
 820 FPTOOLS_CHECK_HTYPE(unsigned long)
 821 if test "$fptools_cv_have_long_long" = yes; then
 822 FPTOOLS_CHECK_HTYPE(long long)
 823 FPTOOLS_CHECK_HTYPE(unsigned long long)
 824 fi
 825 FPTOOLS_CHECK_HTYPE(float)
 826 FPTOOLS_CHECK_HTYPE(double)
 827 FPTOOLS_CHECK_HTYPE(ptrdiff_t)
 828 FPTOOLS_CHECK_HTYPE(size_t)
 829 FPTOOLS_CHECK_HTYPE(wchar_t)
 830 dnl Int32 is a HACK for non-ISO C compilers
 831 FPTOOLS_CHECK_HTYPE(sig_atomic_t, Int32)
 832 FPTOOLS_CHECK_HTYPE(clock_t)
 833 FPTOOLS_CHECK_HTYPE(time_t)
 834 FPTOOLS_CHECK_HTYPE(dev_t, Word32)
 835 FPTOOLS_CHECK_HTYPE(ino_t)
 836 FPTOOLS_CHECK_HTYPE(mode_t)
 837 FPTOOLS_CHECK_HTYPE(off_t)
 838 FPTOOLS_CHECK_HTYPE(pid_t)
 839 FPTOOLS_CHECK_HTYPE(gid_t)
 840 FPTOOLS_CHECK_HTYPE(uid_t)
 841 FPTOOLS_CHECK_HTYPE(cc_t)
 842 FPTOOLS_CHECK_HTYPE(speed_t)
 843 FPTOOLS_CHECK_HTYPE(tcflag_t)
 844 FPTOOLS_CHECK_HTYPE(nlink_t)
 845 FPTOOLS_CHECK_HTYPE(ssize_t)
 846
 847 dnl ** Map OpenGL data types to Haskell types
 848 if test $GhcLibsWithHOpenGL = YES ; then
 849 FPTOOLS_CHECK_HTYPE(GLboolean)
 850 FPTOOLS_CHECK_HTYPE(GLbyte)
 851 FPTOOLS_CHECK_HTYPE(GLubyte)
 852 FPTOOLS_CHECK_HTYPE(GLshort)
 853 FPTOOLS_CHECK_HTYPE(GLushort)
 854 FPTOOLS_CHECK_HTYPE(GLint)
 855 FPTOOLS_CHECK_HTYPE(GLuint)
 856 FPTOOLS_CHECK_HTYPE(GLsizei)
 857 FPTOOLS_CHECK_HTYPE(GLenum)
 858 FPTOOLS_CHECK_HTYPE(GLbitfield)
 859 FPTOOLS_CHECK_HTYPE(GLfloat)
 860 FPTOOLS_CHECK_HTYPE(GLclampf)
 861 FPTOOLS_CHECK_HTYPE(GLdouble)
 862 FPTOOLS_CHECK_HTYPE(GLclampd)
 863 fi
 864
 865 dnl ** can we open files in binary mode?
 866 FPTOOLS_O_BINARY
 867
 868 dnl ** check for GetModuleFileName and WinExec (windows only)
 869 dnl Old: AC_CHECK_FUNCS(WinExec GetModuleFileName)       dnl Windows
 870 dnl Doesn't work because the linker can't see the functions if
 871 dnl you omit the #include <windows.h>.  (I've no idea why not...)
 872
 873 FPTOOLS_TRY_LINK_NOWARN(,[
 874 #if HAVE_WINDOWS_H
 875 #include <windows.h>
 876 #endif
 877 main() {
 878   WinExec("",0);
 879   exit(0);
 880 }
 881 ],
 882 [have_winexec=1],
 883 [have_winexec=0])
 884 if test "$have_winexec" = "1"; then
 885 AC_DEFINE(HAVE_WINEXEC)
 886 fi
 887
 888 FPTOOLS_TRY_LINK_NOWARN(,[
 889 #if HAVE_WINDOWS_H
 890 #include <windows.h>
 891 #endif
 892 main() {
 893   char* dir;
 894   GetModuleFileName((HMODULE)0,dir,0);
 895   exit(0);
 896 }
 897 ],
 898 [have_getmodulefilename=1],
 899 [have_getmodulefilename=0])
 900 if test "$have_getmodulefilename" = "1"; then
 901 AC_DEFINE(HAVE_GETMODULEFILENAME)
 902 fi
 903
 904 dnl ** check return type of signal handlers
 905 dnl Foo: assumes we can use prototypes.
 906 dnl On BCC, signal handlers have type "int(void)", elsewhere its "void(int)".
 907 dnl AC_CACHE_CHECK([type of signal handlers], ac_cv_type_signal_handler,
 908 dnl [AC_TRY_COMPILE([#include <sys/types.h>
 909 dnl #include <signal.h>
 910 dnl #ifdef signal
 911 dnl #undef signal
 912 dnl #endif
 913 dnl void (*signal (int, void (*)(int)))(int);
 914 dnl ],
 915 dnl [int i;],
 916 dnl ac_cv_type_signal_handler=void_int,
 917 dnl ac_cv_type_signal_handler=int_void)])
 918 dnl if test "$ac_cv_type_signal_handler" = void_int; then
 919 dnl AC_DEFINE(VOID_INT_SIGNALS)
 920 dnl fi
 921
 922 dnl On BCC, signal handlers have type "int(void)", elsewhere its "void(int)".
 923 AC_TYPE_SIGNAL
 924 if test "$ac_cv_type_signal" = void; then
 925 AC_DEFINE(VOID_INT_SIGNALS)
 926 fi
 927
 928 dnl ** check for more functions
 929 AC_CHECK_FUNCS(strcasecmp _stricmp stricmp strcmpi)
 930 AC_CHECK_FUNCS(strcmp)
 931 AC_CHECK_FUNCS(realpath _fullpath)
 932 AC_CHECK_FUNCS(PBHSetVolSync macsystem)
 933 AC_CHECK_FUNCS(fgetpos fsetpos fseek ftell)
 934 AC_CHECK_FUNCS(vsnprintf _vsnprintf)
 935 AC_CHECK_FUNCS(snprintf  _snprintf )
 936 AC_CHECK_FUNCS(popen     _popen )
 937 AC_CHECK_FUNCS(pclose    _pclose )
 938
 939
 940 dnl ** check for specific library functions that we are interested in
 941 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)
 942
 943 dnl ** check whether this machine has gmp3 installed
 944 AC_CHECK_LIB(gmp,  __gmpz_fdiv_qr, HaveLibGmp=YES; LibGmp=gmp,
 945   AC_CHECK_LIB(gmp3, __gmpz_fdiv_qr,  HaveLibGmp=YES; LibGmp=gmp3,
 946     HaveLibGmp=NO; LibGmp=not-installed))
 947 AC_SUBST(HaveLibGmp)
 948 AC_SUBST(LibGmp)
 949
 950 dnl ** check for mingwex library
 951 AC_CHECK_LIB(mingwex, closedir, HaveLibMingwEx=YES, HaveLibMingwEx=NO)
 952 AC_SUBST(HaveLibMingwEx)
 953
 954 if test $HaveLibMingwEx = YES ; then
 955   AC_DEFINE(HAVE_MINGWEX)
 956 fi
 957
 958 if test "$HaveLibGmp" = "NO"; then
 959 if test "$HostArch_CPP" = "ia64"; then
 960 AC_MSG_ERROR([You need to install libgmp (the in-tree version does not work on IA64).])
 961 fi;
 962 fi;
 963
 964 dnl ** check whether this machine has GNU regex in libc.
 965 FPTOOLS_REGEX_IN_LIBC
 966
 967 dnl ** check whether this machine has BFD and liberty installed (used for debugging)
 968 dnl    the order of these tests matters: bfd needs liberty
 969 AC_CHECK_LIB(iberty, xmalloc)
 970 AC_CHECK_LIB(bfd,    bfd_init)
 971
 972 dnl ** check for readline, for Hugs and hslibs' Readline
 973 dnl ncurses supersedes termcap and curses, but for compatibility,
 974 dnl we have to check for all...
 975 AC_CHECK_LIB(ncurses, tputs, HaveLibTermcap=YES; LibTermcap=ncurses,
 976   AC_CHECK_LIB(termcap, tputs, HaveLibTermcap=YES; LibTermcap=termcap,
 977     AC_CHECK_LIB(curses, tputs, HaveLibTermcap=YES; LibTermcap=curses,
 978       HaveLibTermcap=NO; LibTermcap=not-installed)))
 979
 980 if test $HaveLibTermcap = YES ; then
 981   LIBS="-l$LibTermcap $LIBS"
 982   AC_CHECK_LIB(readline, readline, HaveLibReadline=YES, HaveLibReadline=NO)
 983 fi
 984
 985 if test $HaveLibTermcap = YES && test x"$HaveLibReadline" = xYES ; then
 986   AC_DEFINE(HAVE_READLINE_LIBS,1)
 987   LibsReadline="readline $LibTermcap"
 988 else
 989   AC_DEFINE(HAVE_READLINE_LIBS,0)
 990   LibsReadline=
 991 fi
 992 AC_SUBST(LibsReadline)
 993
 994 if test "$HaveLibReadline"; then
 995   AC_CHECK_LIB(readline, rl_erase_empty_line,
 996     [AC_DEFINE(HAVE_READLINE_4, 1)],
 997     [AC_DEFINE(HAVE_READLINE_4, 0)])
 998   AC_CHECK_LIB(readline, rl_free_undo_list,
 999     [AC_DEFINE(HAVE_READLINE_4_2, 1)],
1000     [AC_DEFINE(HAVE_READLINE_4_2, 0)])
1001 else
1002   AC_DEFINE(HAVE_READLINE_4, 0)
1003   AC_DEFINE(HAVE_READLINE_4_2, 0)
1004 fi
1005
1006 dnl ** check for math library
1007 FPTOOLS_CHECK_LIBM()
1008 AC_SUBST(LIBM)
1009
1010 case $HostOS_CPP in
1011 cygwin32) ;;
1012 mingw32)  ;;
1013 *) AC_PATH_XTRA() ;;
1014 esac
1015
1016 FPTOOLS_HAVE_OPENGL
1017
1018 dnl ################################################################
1019 dnl Check for libraries
1020 dnl ################################################################
1021
1022 dnl ** check for libdl & RTLD_NEXT
1023
1024 AC_CHECK_LIB(dl, dlopen,
1025         [HaveLibDL=YES
1026          AC_DEFINE(HAVE_LIBDL)
1027          LIBS="$LIBS -ldl"],
1028         [HaveLibDL=NO])
1029 AC_CHECK_FUNCS(dlopen)
1030 AC_SUBST(HaveLibDL)
1031
1032 dnl ** sometimes RTLD_NEXT is hidden in #ifdefs we really don't wan to set
1033 AC_MSG_CHECKING(for RTLD_NEXT from dlfcn.h)
1034 AC_EGREP_CPP(yes,
1035 [
1036  #include <dlfcn.h>
1037  #ifdef RTLD_NEXT
1038         yes
1039  #endif
1040 ], [
1041   AC_MSG_RESULT(yes)
1042   AC_DEFINE(HAVE_RTLDNEXT)
1043   HaveRtldNext=YES
1044 ], [
1045   AC_MSG_RESULT(no)
1046   HaveRtldNext=NO
1047   ])
1048 AC_SUBST(HaveRtldNext)
1049
1050 dnl ** RTLD_LOCAL isn't available on cygwin or openbsd
1051 AC_MSG_CHECKING(for RTLD_LOCAL from dlfcn.h)
1052 AC_EGREP_CPP(yes,
1053 [
1054  #include <dlfcn.h>
1055  #ifdef RTLD_LOCAL
1056         yes
1057  #endif
1058 ], [
1059   AC_MSG_RESULT(yes)
1060   AC_DEFINE(HAVE_RTLDLOCAL)
1061   HaveRtldLocal=YES
1062 ], [
1063   AC_MSG_RESULT(no)
1064   HaveRtldLocal=NO
1065   ])
1066 AC_SUBST(HaveRtldLocal)
1067
1068 dnl ** RTLD_GLOBAL isn't available on openbsd
1069 AC_MSG_CHECKING(for RTLD_GLOBAL from dlfcn.h)
1070 AC_EGREP_CPP(yes,
1071 [
1072  #include <dlfcn.h>
1073  #ifdef RTLD_GLOBAL
1074         yes
1075  #endif
1076 ], [
1077   AC_MSG_RESULT(yes)
1078   AC_DEFINE(HAVE_RTLDGLOBAL)
1079   HaveRtldGlobal=YES
1080 ], [
1081   AC_MSG_RESULT(no)
1082   HaveRtldGlobal=NO
1083   ])
1084 AC_SUBST(HaveRtldGlobal)
1085
1086 dnl ** RTLD_NOW isn't available on openbsd
1087 AC_MSG_CHECKING(for RTLD_NOW from dlfcn.h)
1088 AC_EGREP_CPP(yes,
1089 [
1090  #include <dlfcn.h>
1091  #ifdef RTLD_NOW
1092         yes
1093  #endif
1094 ], [
1095   AC_MSG_RESULT(yes)
1096   AC_DEFINE(HAVE_RTLDNOW)
1097   HaveRtldNow=YES
1098 ], [
1099   AC_MSG_RESULT(no)
1100   HaveRtldNow=NO
1101   ])
1102 AC_SUBST(HaveRtldNow)
1103
1104 FPTOOLS_CHECK_LIB_NOWARN(m, atan)
1105
1106 dnl --------------------------------------------------
1107 dnl * test for GTK+
1108 dnl --------------------------------------------------
1109
1110 AC_PATH_PROGS(GTK_CONFIG, gtk-config gtk12-config)
1111 if test "$GTK_CONFIG" != ""; then
1112    AC_CACHE_CHECK([for version of GTK+], fptools_cv_gtk_version, [
1113         fptools_cv_gtk_version=`$GTK_CONFIG --version`
1114     ])
1115     GTK_VERSION=$fptools_cv_gtk_version
1116 else
1117     GTK_VERSION=
1118 fi
1119
1120 case $fptools_cv_gtk_version in
1121   1.[[23]].*) ;;
1122   *) AC_MSG_WARN([GTK+ not usable; need at least version 1.2])
1123      GTK_CONFIG=
1124      ;;
1125 esac
1126
1127 AC_SUBST(GTK_CONFIG)
1128 AC_SUBST(GTK_VERSION)
1129
1130 dnl --------------------------------------------------
1131 dnl * Miscellaneous feature tests
1132 dnl --------------------------------------------------
1133
1134 dnl ** can we get alloca?
1135 AC_FUNC_ALLOCA
1136
1137 dnl ** determine whether or not const works
1138 AC_C_CONST
1139
1140 dnl ** determine whether ANSI-function prototypes work?
1141 AC_C_PROTOTYPES
1142
1143 dnl ** are we big endian?
1144 AC_C_BIGENDIAN
1145 # Allay users' general fear of warnings of any kind.
1146 errprint(fptools configure script wizard sez: autoconf-2.50 or later should produce no warnings
1147 )
1148 errprint(if you are using 2.13 or earlier, you may get a (harmless) warning message.
1149 )
1150
1151 dnl ** check for leading underscores in symbol names
1152 FPTOOLS_UNDERSCORE
1153
1154 dnl ** how is the end of text section signalled?
1155 FPTOOLS_END_TEXT_SECTION
1156
1157 dnl ** how is the end of data section signalled?
1158 FPTOOLS_END_DATA_SECTION
1159
1160 dnl ** code before data?
1161 FPTOOLS_CODE_BEFORE_DATA
1162
1163 dnl ** check for ld, and whether ld has -x option
1164 AC_PATH_PROG(LdCmdRaw, ld)
1165 case $HostOS_CPP in
1166  mingw32) LdCmd=`cygpath -w ${LdCmdRaw} | sed -e 's@\\\\@/@g' `
1167            ;;
1168  *) LdCmd=${LdCmdRaw}
1169     ;;
1170 esac
1171 AC_SUBST(LdCmd)
1172 FPTOOLS_LD_X
1173
1174 AC_OUTPUT(mk/config.mk, echo timestamp > mk/stamp-h )