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 "$PerlCmd"; then
 567       echo "You must install perl before you can continue"
 568       echo "Perhaps it is already installed, but not in your PATH?"
 569       exit 1
 570    else
 571    FPTOOLS_CHECK_PERL_VERSION
 572    fi
 573    ;;
 574 esac
 575
 576 dnl ** does #! path/to/perl work? (sometimes it's too long...)
 577 FPTOOLS_SHEBANG_PERL
 578
 579 dnl ** check for Python
 580 AC_PATH_PROG(PythonCmd,python)
 581
 582 dnl ** look for GCC and find out which version
 583 dnl     Figure out which C compiler to use.  Gcc is preferred.
 584 dnl     If gcc, make sure it's at least 2.1
 585 dnl
 586 AC_PROG_CC
 587 FPTOOLS_HAVE_GCC
 588
 589 dnl ** figure out how to invoke cpp directly (gcc -E is no good)
 590 AC_PROG_CPP
 591
 592 dnl ** Without optimization some INLINE trickery fails for GHCi
 593 SRC_CC_OPTS="-O"
 594
 595 dnl ** Try to add -mno-cygwin to the C compiler options for mingw32 targets
 596 if test x"$TargetOS_CPP" = x"mingw32"; then
 597   FPTOOLS_CC_FLAG(-mno-cygwin,CC_SUPPORTS_MNO_CYGWIN)
 598   SRC_CC_OPTS="$CC_SUPPORTS_MNO_CYGWIN $SRC_CC_OPTS"
 599   CPPFLAGS="$CC_SUPPORTS_MNO_CYGWIN $CPPFLAGS"
 600 fi
 601 AC_SUBST(SRC_CC_OPTS)
 602
 603 dnl ** figure out how to do context diffs
 604 FPTOOLS_PROG_DIFF
 605
 606 dnl ** Find find command (for Win32's benefit)
 607 FPTOOLS_FIND_FIND
 608
 609 dnl ** look for a decent parser generator (bison preferred)
 610 dnl (FPTOOLS_PROG_YACCY is AC_PROG_YACC, but with some extra testing
 611 dnl  on the suitability of the 'yacc' returned.)
 612 FPTOOLS_PROG_YACCY
 613
 614 dnl ** Find lex command (lex or flex) - *doesn't* use autoconf's
 615 dnl    AC_PROG_LEX, since it doesn't actually check whether 'lex'
 616 dnl    exists if 'flex' doesn't.
 617 AC_PROG_LEX_STRICT
 618
 619 dnl ** figure out how to do a BSD-ish install
 620 AC_PROG_INSTALL
 621
 622 dnl If you can run configure, you certainly have /bin/sh
 623 AC_DEFINE(HAVE_BIN_SH)
 624
 625 dnl ** how to invoke `ar' and `ranlib'
 626 FPTOOLS_PROG_AR_AND_RANLIB
 627
 628 dnl ** Check to see whether ln -s works
 629 AC_PROG_LN_S
 630
 631
 632 dnl ** Find the path to sed
 633 AC_PATH_PROG(SedCmd,sed)
 634
 635
 636 dnl ** check for time command
 637 AC_PATH_PROG(TimeCmd,time)
 638
 639 dnl ** check for tar
 640 dnl   if GNU tar is named gtar, look for it first.
 641 AC_PATH_PROGS(TarCmd,gtar tar,tar)
 642
 643 dnl ** check for gzip/compress
 644 AC_PATH_PROGS(CompressCmd,gzip compress,gzip)
 645
 646 dnl ** check for jade/openjade & determine a working catalog
 647 AC_PATH_PROGS(JadeCmd,openjade jade,jade)
 648 FPTOOLS_DOCBOOK_CATALOG(Catalog, $JadeCmd, docs/fptools-both.dsl,
 649                         /etc/sgml/catalog /etc/sgml.catalog /usr/share/sgml/CATALOG.docbkdsl /usr/local/share/sgml/catalog glafp-utils/docbook/CATALOG*)
 650 if test -z "$Catalog"; then
 651   AC_MSG_RESULT([Warning: You will not be able to build the documentation.])
 652 fi
 653 case $Catalog in
 654    yes) # assume it is provided by other means (e.g., SGML_CATALOG_FILES env var).
 655         Catalog=
 656         ;;
 657    glafp*)
 658         case $HostOS_CPP in
 659            mingw32)
 660               Catalog=`cygpath -w $hardtop/$Catalog`
 661               ;;
 662            *) Catalog=$hardtop/$Catalog
 663               ;;
 664         esac
 665    ;;
 666 esac
 667 AC_SUBST(Catalog)
 668
 669 compress_nm=`basename $CompressCmd`
 670 if test x"$compress_nm" = xgzip; then
 671   CompressCmd="$CompressCmd -d"
 672   CompressSuffix="gz"
 673 else
 674   CompressSuffix="Z"
 675 fi
 676 AC_SUBST(CompressCmd)
 677 AC_SUBST(CompressSuffix)
 678
 679 AC_ARG_ENABLE(src-tree-happy,
 680 [  --enable-src-tree-happy
 681         Build and use source tree (fptools/happy) version of happy.
 682 ],
 683 [UseSrcTreeHappy=YES],
 684 [UseSrcTreeHappy=NO]
 685 )
 686 dnl ** check for installed happy binary + version
 687 dnl    (don't do it if we're booting from .hc files though.)
 688 if test "$BootingFromHc" = "NO"; then
 689 FPTOOLS_HAPPY
 690 fi;
 691
 692 AC_ARG_ENABLE(src-tree-haddock,
 693 [  --enable-src-tree-haddock
 694         Build and use source tree (fptools/haddock) version of haddock.
 695 ],
 696 [UseSrcTreeHaddock=YES],
 697 [UseSrcTreeHaddock=NO]
 698 )
 699 dnl ** check for installed haddock
 700 FPTOOLS_HADDOCK
 701
 702 dnl --------------------------------------------------
 703 dnl ### program checking section ends here ###
 704 dnl --------------------------------------------------
 705
 706 dnl --------------------------------------------------
 707 dnl * Platform header file and syscall feature tests
 708 dnl ### checking the state of the local header files and syscalls ###
 709
 710 dnl ** check for full ANSI header (.h) files
 711 AC_HEADER_STDC
 712
 713 dnl ** check for specific header (.h) files that we are interested in
 714 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)
 715
 716 AC_CHECK_HEADER(readline/readline.h, HaveReadlineReadlineH=YES, HaveReadlineReadlineH=NO)
 717 AC_CHECK_HEADER(readline/history.h, HaveReadlineHistoryH=YES, HaveReadlineHistoryH=NO)
 718
 719 if test $HaveReadlineReadlineH = YES && test $HaveReadlineHistoryH = YES ; then
 720   HaveReadlineHeaders=YES
 721   AC_DEFINE(HAVE_READLINE_HEADERS,1)
 722 else
 723   HaveReadlineHeaders=NO
 724   AC_DEFINE(HAVE_READLINE_HEADERS,0)
 725 fi
 726 AC_SUBST(HaveReadlineHeaders)
 727
 728 dnl ** check for DOS include files
 729 AC_CHECK_HEADERS(dos.h conio.h io.h std.h)
 730
 731 dnl ** check for Windows include files
 732 AC_CHECK_HEADERS(windows.h)
 733
 734 dnl ** check for OpenGL include files
 735 AC_CHECK_HEADERS(GL/gl.h)
 736
 737 dnl ** check if it is safe to include both <time.h> and <sys/time.h>
 738 AC_HEADER_TIME
 739
 740 dnl dynamic loading include files
 741 AC_CHECK_HEADERS(dlfcn.h dl.h)
 742
 743 dnl ** check for farcalloc (in bcc)
 744 AC_CHECK_HEADER(alloc.h,AC_CHECK_FUNCS(farcalloc))
 745
 746 dnl ** check for valloc (in sunos, solaris, mips, amiga, next, minix, ultrix)
 747 AC_CHECK_HEADER(malloc.h,AC_CHECK_FUNCS(valloc))
 748
 749 dnl ** check for POSIX regex
 750 HavePosixRegex=NO
 751 AC_CHECK_HEADER(regex.h,AC_CHECK_FUNC(regcomp, HavePosixRegex=YES))
 752 AC_SUBST(HavePosixRegex)
 753
 754 dnl ** how do we get a timezone name, and UTC offset ?
 755 AC_STRUCT_TIMEZONE
 756
 757 dnl ** what's the type of timezone?
 758 FPTOOLS_HAVE_TIMEZONE
 759 FPTOOLS_TYPE_TIMEZONE
 760
 761 dnl ** do we have altzone?
 762 FPTOOLS_ALTZONE
 763
 764 dnl ** does struct stat contain st_blksize?
 765 AC_STRUCT_ST_BLKSIZE
 766
 767 dnl ** do we have long longs?
 768 FPTOOLS_C_LONG_LONG
 769
 770 dnl ** check what fields struct msghdr contains
 771 FPTOOLS_MSGHDR_MSG_ACCRIGHTS
 772 FPTOOLS_MSGHDR_MSG_CONTROL
 773
 774 dnl ** what are the sizes of various types
 775 dnl    (these must come before GHC_CHECK_ALIGNMENT)
 776 AC_CHECK_SIZEOF(char,               1)
 777 AC_CHECK_SIZEOF(double,             8)
 778 AC_CHECK_SIZEOF(float,              4)
 779 AC_CHECK_SIZEOF(int,                4)
 780 AC_CHECK_SIZEOF(long,               4)
 781 if test "$fptools_cv_have_long_long" = yes; then
 782 AC_CHECK_SIZEOF(long long,          8)
 783 fi
 784 AC_CHECK_SIZEOF(short,              2)
 785 AC_CHECK_SIZEOF(unsigned char,      1)
 786 AC_CHECK_SIZEOF(unsigned int,       4)
 787 AC_CHECK_SIZEOF(unsigned long,      4)
 788 if test "$fptools_cv_have_long_long" = yes; then
 789 AC_CHECK_SIZEOF(unsigned long long, 8)
 790 fi
 791 AC_CHECK_SIZEOF(unsigned short,     2)
 792 AC_CHECK_SIZEOF(void *,             4)
 793
 794 dnl ** what are alignment constraints on various types
 795 FPTOOLS_CHECK_ALIGNMENT(char)
 796 FPTOOLS_CHECK_ALIGNMENT(double)
 797 FPTOOLS_CHECK_ALIGNMENT(float)
 798 FPTOOLS_CHECK_ALIGNMENT(int)
 799 FPTOOLS_CHECK_ALIGNMENT(long)
 800 if test "$fptools_cv_have_long_long" = yes; then
 801 FPTOOLS_CHECK_ALIGNMENT(long long)
 802 fi
 803 FPTOOLS_CHECK_ALIGNMENT(short)
 804 FPTOOLS_CHECK_ALIGNMENT(unsigned char)
 805 FPTOOLS_CHECK_ALIGNMENT(unsigned int)
 806 FPTOOLS_CHECK_ALIGNMENT(unsigned long)
 807 if test "$fptools_cv_have_long_long" = yes; then
 808 FPTOOLS_CHECK_ALIGNMENT(unsigned long long)
 809 fi
 810 FPTOOLS_CHECK_ALIGNMENT(unsigned short)
 811 FPTOOLS_CHECK_ALIGNMENT(void *)
 812
 813 dnl ** map standard C types and ISO types to Haskell types
 814 FPTOOLS_CHECK_HTYPE(char)
 815 FPTOOLS_CHECK_HTYPE(signed char)
 816 FPTOOLS_CHECK_HTYPE(unsigned char)
 817 FPTOOLS_CHECK_HTYPE(short)
 818 FPTOOLS_CHECK_HTYPE(unsigned short)
 819 FPTOOLS_CHECK_HTYPE(int)
 820 FPTOOLS_CHECK_HTYPE(unsigned int)
 821 FPTOOLS_CHECK_HTYPE(long)
 822 FPTOOLS_CHECK_HTYPE(unsigned long)
 823 if test "$fptools_cv_have_long_long" = yes; then
 824 FPTOOLS_CHECK_HTYPE(long long)
 825 FPTOOLS_CHECK_HTYPE(unsigned long long)
 826 fi
 827 FPTOOLS_CHECK_HTYPE(float)
 828 FPTOOLS_CHECK_HTYPE(double)
 829 FPTOOLS_CHECK_HTYPE(ptrdiff_t)
 830 FPTOOLS_CHECK_HTYPE(size_t)
 831 FPTOOLS_CHECK_HTYPE(wchar_t)
 832 dnl Int32 is a HACK for non-ISO C compilers
 833 FPTOOLS_CHECK_HTYPE(sig_atomic_t, Int32)
 834 FPTOOLS_CHECK_HTYPE(clock_t)
 835 FPTOOLS_CHECK_HTYPE(time_t)
 836 FPTOOLS_CHECK_HTYPE(dev_t, Word32)
 837 FPTOOLS_CHECK_HTYPE(ino_t)
 838 FPTOOLS_CHECK_HTYPE(mode_t)
 839 FPTOOLS_CHECK_HTYPE(off_t)
 840 FPTOOLS_CHECK_HTYPE(pid_t)
 841 FPTOOLS_CHECK_HTYPE(gid_t)
 842 FPTOOLS_CHECK_HTYPE(uid_t)
 843 FPTOOLS_CHECK_HTYPE(cc_t)
 844 FPTOOLS_CHECK_HTYPE(speed_t)
 845 FPTOOLS_CHECK_HTYPE(tcflag_t)
 846 FPTOOLS_CHECK_HTYPE(nlink_t)
 847 FPTOOLS_CHECK_HTYPE(ssize_t)
 848
 849 dnl ** Map OpenGL data types to Haskell types
 850 if test $GhcLibsWithHOpenGL = YES ; then
 851 FPTOOLS_CHECK_HTYPE(GLboolean)
 852 FPTOOLS_CHECK_HTYPE(GLbyte)
 853 FPTOOLS_CHECK_HTYPE(GLubyte)
 854 FPTOOLS_CHECK_HTYPE(GLshort)
 855 FPTOOLS_CHECK_HTYPE(GLushort)
 856 FPTOOLS_CHECK_HTYPE(GLint)
 857 FPTOOLS_CHECK_HTYPE(GLuint)
 858 FPTOOLS_CHECK_HTYPE(GLsizei)
 859 FPTOOLS_CHECK_HTYPE(GLenum)
 860 FPTOOLS_CHECK_HTYPE(GLbitfield)
 861 FPTOOLS_CHECK_HTYPE(GLfloat)
 862 FPTOOLS_CHECK_HTYPE(GLclampf)
 863 FPTOOLS_CHECK_HTYPE(GLdouble)
 864 FPTOOLS_CHECK_HTYPE(GLclampd)
 865 fi
 866
 867 dnl ** can we open files in binary mode?
 868 FPTOOLS_O_BINARY
 869
 870 dnl ** check for GetModuleFileName and WinExec (windows only)
 871 dnl Old: AC_CHECK_FUNCS(WinExec GetModuleFileName)       dnl Windows
 872 dnl Doesn't work because the linker can't see the functions if
 873 dnl you omit the #include <windows.h>.  (I've no idea why not...)
 874
 875 FPTOOLS_TRY_LINK_NOWARN(,[
 876 #if HAVE_WINDOWS_H
 877 #include <windows.h>
 878 #endif
 879 main() {
 880   WinExec("",0);
 881   exit(0);
 882 }
 883 ],
 884 [have_winexec=1],
 885 [have_winexec=0])
 886 if test "$have_winexec" = "1"; then
 887 AC_DEFINE(HAVE_WINEXEC)
 888 fi
 889
 890 FPTOOLS_TRY_LINK_NOWARN(,[
 891 #if HAVE_WINDOWS_H
 892 #include <windows.h>
 893 #endif
 894 main() {
 895   char* dir;
 896   GetModuleFileName((HMODULE)0,dir,0);
 897   exit(0);
 898 }
 899 ],
 900 [have_getmodulefilename=1],
 901 [have_getmodulefilename=0])
 902 if test "$have_getmodulefilename" = "1"; then
 903 AC_DEFINE(HAVE_GETMODULEFILENAME)
 904 fi
 905
 906 dnl ** check return type of signal handlers
 907 dnl Foo: assumes we can use prototypes.
 908 dnl On BCC, signal handlers have type "int(void)", elsewhere its "void(int)".
 909 dnl AC_CACHE_CHECK([type of signal handlers], ac_cv_type_signal_handler,
 910 dnl [AC_TRY_COMPILE([#include <sys/types.h>
 911 dnl #include <signal.h>
 912 dnl #ifdef signal
 913 dnl #undef signal
 914 dnl #endif
 915 dnl void (*signal (int, void (*)(int)))(int);
 916 dnl ],
 917 dnl [int i;],
 918 dnl ac_cv_type_signal_handler=void_int,
 919 dnl ac_cv_type_signal_handler=int_void)])
 920 dnl if test "$ac_cv_type_signal_handler" = void_int; then
 921 dnl AC_DEFINE(VOID_INT_SIGNALS)
 922 dnl fi
 923
 924 dnl On BCC, signal handlers have type "int(void)", elsewhere its "void(int)".
 925 AC_TYPE_SIGNAL
 926 if test "$ac_cv_type_signal" = void; then
 927 AC_DEFINE(VOID_INT_SIGNALS)
 928 fi
 929
 930 dnl ** check for more functions
 931 AC_CHECK_FUNCS(strcasecmp _stricmp stricmp strcmpi)
 932 AC_CHECK_FUNCS(strcmp)
 933 AC_CHECK_FUNCS(realpath _fullpath)
 934 AC_CHECK_FUNCS(PBHSetVolSync macsystem)
 935 AC_CHECK_FUNCS(fgetpos fsetpos fseek ftell)
 936 AC_CHECK_FUNCS(vsnprintf _vsnprintf)
 937 AC_CHECK_FUNCS(snprintf  _snprintf )
 938 AC_CHECK_FUNCS(popen     _popen )
 939 AC_CHECK_FUNCS(pclose    _pclose )
 940
 941
 942 dnl ** check for specific library functions that we are interested in
 943 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)
 944
 945 dnl ** check whether this machine has gmp3 installed
 946 AC_CHECK_LIB(gmp,  __gmpz_fdiv_qr, HaveLibGmp=YES; LibGmp=gmp,
 947   AC_CHECK_LIB(gmp3, __gmpz_fdiv_qr,  HaveLibGmp=YES; LibGmp=gmp3,
 948     HaveLibGmp=NO; LibGmp=not-installed))
 949 AC_SUBST(HaveLibGmp)
 950 AC_SUBST(LibGmp)
 951
 952 dnl ** check for mingwex library
 953 AC_CHECK_LIB(mingwex, closedir, HaveLibMingwEx=YES, HaveLibMingwEx=NO)
 954 AC_SUBST(HaveLibMingwEx)
 955
 956 if test $HaveLibMingwEx = YES ; then
 957   AC_DEFINE(HAVE_MINGWEX)
 958 fi
 959
 960 if test "$HaveLibGmp" = "NO"; then
 961 if test "$HostArch_CPP" = "ia64"; then
 962 AC_MSG_ERROR([You need to install libgmp (the in-tree version does not work on IA64).])
 963 fi;
 964 fi;
 965
 966 dnl ** check whether this machine has GNU regex in libc.
 967 FPTOOLS_REGEX_IN_LIBC
 968
 969 dnl ** check whether this machine has BFD and liberty installed (used for debugging)
 970 dnl    the order of these tests matters: bfd needs liberty
 971 AC_CHECK_LIB(iberty, xmalloc)
 972 AC_CHECK_LIB(bfd,    bfd_init)
 973
 974 dnl ** check for readline, for Hugs and hslibs' Readline
 975 dnl ncurses supersedes termcap and curses, but for compatibility,
 976 dnl we have to check for all...
 977 AC_CHECK_LIB(ncurses, tputs, HaveLibTermcap=YES; LibTermcap=ncurses,
 978   AC_CHECK_LIB(termcap, tputs, HaveLibTermcap=YES; LibTermcap=termcap,
 979     AC_CHECK_LIB(curses, tputs, HaveLibTermcap=YES; LibTermcap=curses,
 980       HaveLibTermcap=NO; LibTermcap=not-installed)))
 981
 982 if test $HaveLibTermcap = YES ; then
 983   LIBS="-l$LibTermcap $LIBS"
 984   AC_CHECK_LIB(readline, readline, HaveLibReadline=YES, HaveLibReadline=NO)
 985 fi
 986
 987 if test $HaveLibTermcap = YES && test x"$HaveLibReadline" = xYES ; then
 988   AC_DEFINE(HAVE_READLINE_LIBS,1)
 989   LibsReadline="readline $LibTermcap"
 990 else
 991   AC_DEFINE(HAVE_READLINE_LIBS,0)
 992   LibsReadline=
 993 fi
 994 AC_SUBST(LibsReadline)
 995
 996 if test "$HaveLibReadline"; then
 997   AC_CHECK_LIB(readline, rl_erase_empty_line,
 998     [AC_DEFINE(HAVE_READLINE_4, 1)],
 999     [AC_DEFINE(HAVE_READLINE_4, 0)])
1000   AC_CHECK_LIB(readline, rl_free_undo_list,
1001     [AC_DEFINE(HAVE_READLINE_4_2, 1)],
1002     [AC_DEFINE(HAVE_READLINE_4_2, 0)])
1003 else
1004   AC_DEFINE(HAVE_READLINE_4, 0)
1005   AC_DEFINE(HAVE_READLINE_4_2, 0)
1006 fi
1007
1008 dnl ** check for math library
1009 FPTOOLS_CHECK_LIBM()
1010 AC_SUBST(LIBM)
1011
1012 case $HostOS_CPP in
1013 cygwin32) ;;
1014 mingw32)  ;;
1015 *) AC_PATH_XTRA() ;;
1016 esac
1017
1018 FPTOOLS_HAVE_OPENGL
1019
1020 dnl ################################################################
1021 dnl Check for libraries
1022 dnl ################################################################
1023
1024 dnl ** check for libdl & RTLD_NEXT
1025
1026 AC_CHECK_LIB(dl, dlopen,
1027         [HaveLibDL=YES
1028          AC_DEFINE(HAVE_LIBDL)
1029          LIBS="$LIBS -ldl"],
1030         [HaveLibDL=NO])
1031 AC_CHECK_FUNCS(dlopen)
1032 AC_SUBST(HaveLibDL)
1033
1034 dnl ** sometimes RTLD_NEXT is hidden in #ifdefs we really don't wan to set
1035 AC_MSG_CHECKING(for RTLD_NEXT from dlfcn.h)
1036 AC_EGREP_CPP(yes,
1037 [
1038  #include <dlfcn.h>
1039  #ifdef RTLD_NEXT
1040         yes
1041  #endif
1042 ], [
1043   AC_MSG_RESULT(yes)
1044   AC_DEFINE(HAVE_RTLDNEXT)
1045   HaveRtldNext=YES
1046 ], [
1047   AC_MSG_RESULT(no)
1048   HaveRtldNext=NO
1049   ])
1050 AC_SUBST(HaveRtldNext)
1051
1052 dnl ** RTLD_LOCAL isn't available on cygwin or openbsd
1053 AC_MSG_CHECKING(for RTLD_LOCAL from dlfcn.h)
1054 AC_EGREP_CPP(yes,
1055 [
1056  #include <dlfcn.h>
1057  #ifdef RTLD_LOCAL
1058         yes
1059  #endif
1060 ], [
1061   AC_MSG_RESULT(yes)
1062   AC_DEFINE(HAVE_RTLDLOCAL)
1063   HaveRtldLocal=YES
1064 ], [
1065   AC_MSG_RESULT(no)
1066   HaveRtldLocal=NO
1067   ])
1068 AC_SUBST(HaveRtldLocal)
1069
1070 dnl ** RTLD_GLOBAL isn't available on openbsd
1071 AC_MSG_CHECKING(for RTLD_GLOBAL from dlfcn.h)
1072 AC_EGREP_CPP(yes,
1073 [
1074  #include <dlfcn.h>
1075  #ifdef RTLD_GLOBAL
1076         yes
1077  #endif
1078 ], [
1079   AC_MSG_RESULT(yes)
1080   AC_DEFINE(HAVE_RTLDGLOBAL)
1081   HaveRtldGlobal=YES
1082 ], [
1083   AC_MSG_RESULT(no)
1084   HaveRtldGlobal=NO
1085   ])
1086 AC_SUBST(HaveRtldGlobal)
1087
1088 dnl ** RTLD_NOW isn't available on openbsd
1089 AC_MSG_CHECKING(for RTLD_NOW from dlfcn.h)
1090 AC_EGREP_CPP(yes,
1091 [
1092  #include <dlfcn.h>
1093  #ifdef RTLD_NOW
1094         yes
1095  #endif
1096 ], [
1097   AC_MSG_RESULT(yes)
1098   AC_DEFINE(HAVE_RTLDNOW)
1099   HaveRtldNow=YES
1100 ], [
1101   AC_MSG_RESULT(no)
1102   HaveRtldNow=NO
1103   ])
1104 AC_SUBST(HaveRtldNow)
1105
1106 FPTOOLS_CHECK_LIB_NOWARN(m, atan)
1107
1108 dnl --------------------------------------------------
1109 dnl * test for GTK+
1110 dnl --------------------------------------------------
1111
1112 AC_PATH_PROGS(GTK_CONFIG, gtk-config gtk12-config)
1113 if test "$GTK_CONFIG" != ""; then
1114    AC_CACHE_CHECK([for version of GTK+], fptools_cv_gtk_version, [
1115         fptools_cv_gtk_version=`$GTK_CONFIG --version`
1116     ])
1117     GTK_VERSION=$fptools_cv_gtk_version
1118 else
1119     GTK_VERSION=
1120 fi
1121
1122 case $fptools_cv_gtk_version in
1123   1.[[23]].*) ;;
1124   *) AC_MSG_WARN([GTK+ not usable; need at least version 1.2])
1125      GTK_CONFIG=
1126      ;;
1127 esac
1128
1129 AC_SUBST(GTK_CONFIG)
1130 AC_SUBST(GTK_VERSION)
1131
1132 dnl --------------------------------------------------
1133 dnl * Miscellaneous feature tests
1134 dnl --------------------------------------------------
1135
1136 dnl ** can we get alloca?
1137 AC_FUNC_ALLOCA
1138
1139 dnl ** determine whether or not const works
1140 AC_C_CONST
1141
1142 dnl ** determine whether ANSI-function prototypes work?
1143 AC_C_PROTOTYPES
1144
1145 dnl ** are we big endian?
1146 AC_C_BIGENDIAN
1147 # Allay users' general fear of warnings of any kind.
1148 errprint(fptools configure script wizard sez: autoconf-2.50 or later should produce no warnings
1149 )
1150 errprint(if you are using 2.13 or earlier, you may get a (harmless) warning message.
1151 )
1152
1153 dnl ** check for leading underscores in symbol names
1154 FPTOOLS_UNDERSCORE
1155
1156 dnl ** how is the end of text section signalled?
1157 FPTOOLS_END_TEXT_SECTION
1158
1159 dnl ** how is the end of data section signalled?
1160 FPTOOLS_END_DATA_SECTION
1161
1162 dnl ** code before data?
1163 FPTOOLS_CODE_BEFORE_DATA
1164
1165 dnl ** check for ld, and whether ld has -x option
1166 AC_PATH_PROG(LdCmdRaw, ld)
1167 case $HostOS_CPP in
1168  mingw32) LdCmd=`cygpath -w ${LdCmdRaw} | sed -e 's@\\\\@/@g' `
1169            ;;
1170  *) LdCmd=${LdCmdRaw}
1171     ;;
1172 esac
1173 AC_SUBST(LdCmd)
1174 FPTOOLS_LD_X
1175
1176 AC_OUTPUT(mk/config.mk, echo timestamp > mk/stamp-h )