configure.ac

   1 dnl == autoconf source for the Glasgow FP tools ==
   2 dnl (run "grep '^dnl \*' configure.ac | 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, 1994-2004
   7 #
   8 # Configure script template for the Glasgow functional programming tools
   9 #
  10 # Process with 'autoreconf' 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 AC_INIT([fptools build system], [1.0], [cvs-fptools@haskell.org], [fptools])
  17
  18 # First off, a distrib sanity check..
  19 AC_CONFIG_SRCDIR([mk/config.mk.in])
  20
  21 dnl * We require autoconf version 2.52
  22 dnl We need 2.50 due to the use of AC_SYS_LARGEFILE and AC_MSG_NOTICE.
  23 dnl We need 2.52 due to the use of AS_TR_CPP and AS_TR_SH.
  24 AC_PREREQ([2.52])
  25
  26 dnl * Declare subdirectories that have a private configure script
  27 dnl
  28 dnl After the toplevel configuration is complete, the script will recurse into
  29 dnl these subdirectories if they exist. The use of a cache file makes repeated
  30 dnl checks cheap.
  31 AC_CONFIG_SUBDIRS([ghc libraries])
  32
  33 # -------------------------------------------------------------------------
  34 # Prepare to generate the following header files
  35 #
  36 #
  37 AC_CONFIG_HEADER(mk/config.h)
  38
  39 # No, semi-sadly, we don't do `--srcdir'...
  40 if test x"$srcdir" != 'x.' ; then
  41     echo "This configuration does not support the \`--srcdir' option.."
  42     exit 1
  43 fi
  44
  45 dnl--------------------------------------------------------------------
  46 dnl * Choose host(/target/build) platform
  47 dnl--------------------------------------------------------------------
  48
  49 dnl Guess host/target/build platform(s) if necessary.
  50 AC_CANONICAL_TARGET
  51
  52 # "$host" defaults to "$target"
  53 if test "x$host" = xNONE ; then
  54     host=$target
  55 fi
  56
  57 dnl ** canonicalize platform names
  58 BuildPlatform=`/bin/sh $srcdir/config.sub $build` || exit 1
  59 HostPlatform=`/bin/sh $srcdir/config.sub $host` || exit 1
  60 TargetPlatform=`/bin/sh $srcdir/config.sub $target` || exit 1
  61
  62 if test x"$TargetPlatform" != x"$HostPlatform" ; then
  63     echo "GHC configuration does not support differing host/target (i.e., cross-compiling)"
  64     exit 1
  65 fi
  66
  67 exeext=''
  68 #
  69 # The following will be more difficult when we *are* cross-compiling.
  70 # Suitable names to slam in *_CPP are in platform.h.in.
  71 # We also record the architecture, vendor, and operating system (OS)
  72 # separately.
  73 case $HostPlatform in
  74 alpha*-dec-osf[[12]]*)
  75         HostPlatform=alpha-dec-osf1   # canonicalise for our purposes
  76         TargetPlatform=alpha-dec-osf1 # this will work for now... (hack)
  77         BuildPlatform=alpha-dec-osf1  # hack
  78         HostPlatform_CPP='alpha_dec_osf1'
  79         HostArch_CPP='alpha'
  80         HostVendor_CPP='dec'
  81         HostOS_CPP='osf1'
  82         ;;
  83 alpha*-dec-osf[[345]]*)
  84         HostPlatform=alpha-dec-osf3   # canonicalise for our purposes
  85         TargetPlatform=alpha-dec-osf3 # this will work for now... (hack)
  86         BuildPlatform=alpha-dec-osf3  # hack
  87         HostPlatform_CPP='alpha_dec_osf3'
  88         HostArch_CPP='alpha'
  89         HostVendor_CPP='dec'
  90         HostOS_CPP='osf3'
  91         ;;
  92 alpha*-unknown-linux*)
  93         HostPlatform=alpha-unknown-linux
  94         TargetPlatform=alpha-unknown-linux
  95         BuildPlatform=alpha-unknown-linux
  96         HostPlatform_CPP='alpha_unknown_linux'
  97         HostArch_CPP='alpha'
  98         HostVendor_CPP='unknown'
  99         HostOS_CPP='linux'
 100         ;;
 101 alpha*-unknown-freebsd*)
 102         HostPlatform=alpha-unknown-freebsd
 103         TargetPlatform=alpha-unknown-freebsd
 104         BuildPlatform=alpha-unknown-freebsd
 105         HostPlatform_CPP='alpha_unknown_freebsd'
 106         HostArch_CPP='alpha'
 107         HostVendor_CPP='unknown'
 108         HostOS_CPP='freebsd'
 109         ;;
 110 alpha*-unknown-openbsd*)
 111         HostPlatform=alpha-unknown-openbsd
 112         TargetPlatform=alpha-unknown-openbsd
 113         BuildPlatform=alpha-unknown-openbsd
 114         HostPlatform_CPP='alpha_unknown_openbsd'
 115         HostArch_CPP='alpha'
 116         HostVendor_CPP='unknown'
 117         HostOS_CPP='openbsd'
 118         ;;
 119 amd64-*-openbsd*|x86_64-*-openbsd*)
 120         HostPlatform=x86_64-unknown-openbsd
 121         TargetPlatform=x86_64-unknown-openbsd
 122         BuildPlatform=x86_64-unknown-openbsd
 123         HostPlatform_CPP='x86_64_unknown_openbsd'
 124         HostArch_CPP='x86_64'
 125         HostVendor_CPP='unknown'
 126         HostOS_CPP='openbsd'
 127         ;;
 128 arm*-linux*)
 129         HostPlatform=arm-unknown-linux # hack again
 130         TargetPlatform=arm-unknown-linux
 131         BuildPlatform=arm-unknown-linux
 132         HostPlatform_CPP='arm_unknown_linux'
 133         HostArch_CPP='arm'
 134         HostVendor_CPP='unknown'
 135         HostOS_CPP='linux'
 136         ;;
 137 arm*-openbsd*)
 138         HostPlatform=arm-unknown-openbsd
 139         TargetPlatform=arm-unknown-openbsd
 140         BuildPlatform=arm-unknown-openbsd
 141         HostPlatform_CPP='arm_unknown_openbsd'
 142         HostArch_CPP='arm'
 143         HostVendor_CPP='unknown'
 144         HostOS_CPP='openbsd'
 145         ;;
 146 hppa*-*-linux*)
 147         HostPlatform=hppa-unknown-linux # hack again
 148         TargetPlatform=hppa-unknown-linux
 149         BuildPlatform=hppa-unknown-linux
 150         HostPlatform_CPP='hppa_unknown_linux'
 151         HostArch_CPP='hppa'
 152         HostVendor_CPP='unknown'
 153         HostOS_CPP='linux'
 154         ;;
 155 hppa*-*-openbsd*)
 156         HostPlatform=hppa-unknown-openbsd # hack again
 157         TargetPlatform=hppa-unknown-openbsd
 158         BuildPlatform=hppa-unknown-openbsd
 159         HostPlatform_CPP='hppa_unknown_openbsd'
 160         HostArch_CPP='hppa'
 161         HostVendor_CPP='unknown'
 162         HostOS_CPP='openbsd'
 163         ;;
 164 hppa1.1-hp-hpux*)
 165         HostPlatform=hppa1.1-hp-hpux  # canonicalise for our purposes (hack)
 166         TargetPlatform=hppa1.1-hp-hpux
 167         BuildPlatform=hppa1.1-hp-hpux
 168         HostPlatform_CPP='hppa1_1_hp_hpux'
 169         HostArch_CPP='hppa1_1'
 170         HostVendor_CPP='hp'
 171         HostOS_CPP='hpux'
 172         ;;
 173 i[[3456]]86-*-linuxaout*)
 174         HostPlatform=i386-unknown-linuxaout   # hack again
 175         TargetPlatform=i386-unknown-linuxaout
 176         BuildPlatform=i386-unknown-linuxaout
 177         HostPlatform_CPP='i386_unknown_linuxaout'
 178         HostArch_CPP='i386'
 179         HostVendor_CPP='unknown'
 180         HostOS_CPP='linuxaout'
 181         ;;
 182 i[[3456]]86-*-linux*)
 183         HostPlatform=i386-unknown-linux # hack again
 184         TargetPlatform=i386-unknown-linux
 185         BuildPlatform=i386-unknown-linux
 186         HostPlatform_CPP='i386_unknown_linux'
 187         HostArch_CPP='i386'
 188         HostVendor_CPP='unknown'
 189         HostOS_CPP='linux'
 190         ;;
 191 i[[3456]]86-*-freebsd[[3-9]]*) # FreeBSD 3.0+ uses ELF
 192         HostPlatform=i386-unknown-freebsd # hack again
 193         TargetPlatform=i386-unknown-freebsd
 194         BuildPlatform=i386-unknown-freebsd
 195         HostPlatform_CPP='i386_unknown_freebsd'
 196         HostArch_CPP='i386'
 197         HostVendor_CPP='unknown'
 198         HostOS_CPP='freebsd'
 199         ;;
 200 i[[3456]]86-*-freebsd2*) # Older FreeBSDs are a.out
 201         HostPlatform=i386-unknown-freebsd2 # hack again
 202         TargetPlatform=i386-unknown-freebsd2
 203         BuildPlatform=i386-unknown-freebsd2
 204         HostPlatform_CPP='i386_unknown_freebsd2'
 205         HostArch_CPP='i386'
 206         HostVendor_CPP='unknown'
 207         HostOS_CPP='freebsd2'
 208         ;;
 209 i[[3456]]86-*-netbsd*)
 210         HostPlatform=i386-unknown-netbsd # hack again
 211         TargetPlatform=i386-unknown-netbsd
 212         BuildPlatform=i386-unknown-netbsd
 213         HostPlatform_CPP='i386_unknown_netbsd'
 214         HostArch_CPP='i386'
 215         HostVendor_CPP='unknown'
 216         HostOS_CPP='netbsd'
 217         ;;
 218 i[[3456]]86-*-openbsd*)
 219         HostPlatform=i386-unknown-openbsd # hack again
 220         TargetPlatform=i386-unknown-openbsd
 221         BuildPlatform=i386-unknown-openbsd
 222         HostPlatform_CPP='i386_unknown_openbsd'
 223         HostArch_CPP='i386'
 224         HostVendor_CPP='unknown'
 225         HostOS_CPP='openbsd'
 226         ;;
 227 i[[3456]]86-*-solaris2*)
 228         HostPlatform=i386-unknown-solaris2 # hack again
 229         TargetPlatform=i386-unknown-solaris2
 230         BuildPlatform=i386-unknown-solaris2
 231         HostPlatform_CPP='i386_unknown_solaris2'
 232         HostArch_CPP='i386'
 233         HostVendor_CPP='unknown'
 234         HostOS_CPP='solaris2'
 235         ;;
 236 i[[3456]]86-*-cygwin*)
 237         HostPlatform=i386-unknown-cygwin32 # hack again
 238         TargetPlatform=i386-unknown-cygwin32
 239         BuildPlatform=i386-unknown-cygwin32
 240         HostPlatform_CPP='i386_unknown_cygwin32'
 241         HostArch_CPP='i386'
 242         HostVendor_CPP='unknown'
 243         HostOS_CPP='cygwin32'
 244         exeext='.exe'
 245         ;;
 246 i[[3456]]86-*-mingw32*)
 247         HostPlatform=i386-unknown-mingw32 # hack again
 248         TargetPlatform=i386-unknown-mingw32
 249         BuildPlatform=i386-unknown-mingw32
 250         HostPlatform_CPP='i386_unknown_mingw32'
 251         HostArch_CPP='i386'
 252         HostVendor_CPP='unknown'
 253         HostOS_CPP='mingw32'
 254         exeext='.exe'
 255         ;;
 256 ia64-*-linux*)
 257         HostPlatform=ia64-unknown-linux # hack again
 258         TargetPlatform=ia64-unknown-linux
 259         BuildPlatform=ia64-unknown-linux
 260         HostPlatform_CPP='ia64_unknown_linux'
 261         HostArch_CPP='ia64'
 262         HostVendor_CPP='unknown'
 263         HostOS_CPP='linux'
 264         ;;
 265 x86_64-*-linux*)
 266         HostPlatform=x86_64-unknown-linux
 267         TargetPlatform=x86_64-unknown-linux
 268         BuildPlatform=x86_64-unknown-linux
 269         HostPlatform_CPP='x86_64_unknown_linux'
 270         HostArch_CPP='x86_64'
 271         HostVendor_CPP='unknown'
 272         HostOS_CPP='linux'
 273         ;;
 274 m68k-*-linux*)
 275         HostPlatform=m68k-unknown-linux # hack again
 276         TargetPlatform=m68k-unknown-linux
 277         BuildPlatform=m68k-unknown-linux
 278         HostPlatform_CPP='m68k_unknown_linux'
 279         HostArch_CPP='m68k'
 280         HostVendor_CPP='unknown'
 281         HostOS_CPP='linux'
 282         ;;
 283 m68k-next-nextstep2)
 284         HostPlatform_CPP='m68k_next_nextstep2'
 285         HostArch_CPP='m68k'
 286         HostVendor_CPP='next'
 287         HostOS_CPP='nextstep2'
 288         ;;
 289 m68k-next-nextstep3)
 290         HostPlatform_CPP='m68k_next_nextstep3'
 291         HostArch_CPP='m68k'
 292         HostVendor_CPP='next'
 293         HostOS_CPP='nextstep3'
 294         ;;
 295 i[[3456]]86-next-nextstep3)
 296         HostPlatform=i386-next-nextstep3 # hack again
 297         TargetPlatform=i386-next-nextstep3
 298         BuildPlatform=i386-next-nextstep3
 299         HostPlatform_CPP='i386_next_nextstep3'
 300         HostArch_CPP='i386'
 301         HostVendor_CPP='next'
 302         HostOS_CPP='nextstep3'
 303         ;;
 304 m68k-*-openbsd*)
 305         HostPlatform=m68k-unknown-openbsd
 306         TargetPlatform=m68k-unknown-openbsd
 307         BuildPlatform=m68k-unknown-openbsd
 308         HostPlatform_CPP='m68k_unknown_openbsd'
 309         HostArch_CPP='m68k'
 310         HostVendor_CPP='unknown'
 311         HostOS_CPP='openbsd'
 312         ;;
 313 m68k-*-netbsd*)
 314         HostPlatform=m68k-unknown-netbsd
 315         TargetPlatform=m68k-unknown-netbsd
 316         BuildPlatform=m68k-unknown-netbsd
 317         HostPlatform_CPP='m68k_unknown_netbsd'
 318         HostArch_CPP='m68k'
 319         HostVendor_CPP='unknown'
 320         HostOS_CPP='netbsd'
 321         ;;
 322 m68k-sun-sunos4*)
 323         HostPlatform=m68k-sun-sunos4
 324         TargetPlatform=m68k-sun-sunos4 #hack
 325         BuildPlatform=m68k-sun-sunos4 #hack
 326         HostPlatform_CPP='m68k_sun_sunos4'
 327         HostArch_CPP='m68k'
 328         HostVendor_CPP='sun'
 329         HostOS_CPP='sunos4'
 330         ;;
 331 m88k-*-openbsd*)
 332         HostPlatform=m88k-unknown-openbsd
 333         TargetPlatform=m88k-unknown-openbsd
 334         BuildPlatform=m88k-unknown-openbsd
 335         HostPlatform_CPP='m88k_unknown_openbsd'
 336         HostArch_CPP='m88k'
 337         HostVendor_CPP='unknown'
 338         HostOS_CPP='openbsd'
 339         ;;
 340 mips-*-linux*)
 341         HostPlatform=mips-unknown-linux # hack again
 342         TargetPlatform=mips-unknown-linux
 343         BuildPlatform=mips-unknown-linux
 344         HostPlatform_CPP='mips_unknown_linux'
 345         HostArch_CPP='mips'
 346         HostVendor_CPP='unknown'
 347         HostOS_CPP='linux'
 348         ;;
 349 mips-dec-ultrix*)
 350         HostPlatform_CPP='mips_dec_ultrix'
 351         HostArch_CPP='mipsel'   # NB a little different
 352         HostVendor_CPP='dec'
 353         HostOS_CPP='ultrix'
 354         ;;
 355 mips-sgi-irix*)
 356         HostPlatform=mips-sgi-irix
 357         TargetPlatform=mips-sgi-irix #hack
 358         BuildPlatform=mips-sgi-irix #hack
 359         HostPlatform_CPP='mips_sgi_irix'
 360         HostArch_CPP='mipseb'   # NB a little different
 361         HostVendor_CPP='sgi'
 362         HostOS_CPP='irix'
 363         ;;
 364 rs6000-ibm-aix*)
 365         HostPlatform=rs6000-ibm-aix
 366         TargetPlatform=rs6000-ibm-aix #hack
 367         BuildPlatform=rs6000-ibm-aix #hack
 368         HostPlatform_CPP='rs6000_ibm_aix'
 369         HostArch_CPP='rs6000'
 370         HostVendor_CPP='ibm'
 371         HostOS_CPP='aix'
 372         ;;
 373 powerpc-ibm-aix*)
 374         HostPlatform=powerpc-ibm-aix
 375         TargetPlatform=powerpc-ibm-aix #hack
 376         BuildPlatform=powerpc-ibm-aix #hack
 377         HostPlatform_CPP='powerpc_ibm_aix'
 378         HostArch_CPP='powerpc'
 379         HostVendor_CPP='ibm'
 380         HostOS_CPP='aix'
 381         ;;
 382 powerpc-apple-darwin*)
 383         HostPlatform=powerpc-apple-darwin
 384         TargetPlatform=powerpc-apple-darwin #hack
 385         BuildPlatform=powerpc-apple-darwin #hack
 386         HostPlatform_CPP='powerpc_apple_darwin'
 387         HostArch_CPP='powerpc'
 388         HostVendor_CPP='apple'
 389         HostOS_CPP='darwin'
 390         ;;
 391 powerpc-unknown-linux*)
 392         HostPlatform=powerpc-unknown-linux
 393         TargetPlatform=powerpc-unknown-linux
 394         BuildPlatform=powerpc-unknown-linux
 395         HostPlatform_CPP='powerpc_unknown_linux'
 396         HostArch_CPP='powerpc'
 397         HostVendor_CPP='unknown'
 398         HostOS_CPP='linux'
 399         ;;
 400 powerpc-unknown-openbsd*)
 401         HostPlatform=powerpc-unknown-openbsd
 402         TargetPlatform=powerpc-unknown-openbsd
 403         BuildPlatform=powerpc-unknown-openbsd
 404         HostPlatform_CPP='powerpc_unknown_openbsd'
 405         HostArch_CPP='powerpc'
 406         HostVendor_CPP='unknown'
 407         HostOS_CPP='openbsd'
 408         ;;
 409 powerpc64-unknown-linux*)
 410         HostPlatform=powerpc64-unknown-linux
 411         TargetPlatform=powerpc64-unknown-linux
 412         BuildPlatform=powerpc64-unknown-linux
 413         HostPlatform_CPP='powerpc64_unknown_linux'
 414         HostArch_CPP='powerpc64'
 415         HostVendor_CPP='unknown'
 416         HostOS_CPP='linux'
 417         ;;
 418
 419 s390-ibm-linux*)
 420        HostPlatform=s390-ibm-linux
 421        TargetPlatform=s390-ibm-linux #hack
 422        BuildPlatform=s390-ibm-linux #hack
 423         HostPlatform_CPP='s390_ibm_linux'
 424         HostArch_CPP='s390'
 425         HostVendor_CPP='ibm'
 426         HostOS_CPP='linux'
 427         ;;
 428 sparc-sun-sunos4*)
 429         HostPlatform=sparc-sun-sunos4
 430         TargetPlatform=sparc-sun-sunos4 #hack
 431         BuildPlatform=sparc-sun-sunos4 #hack
 432         HostPlatform_CPP='sparc_sun_sunos4'
 433         HostArch_CPP='sparc'
 434         HostVendor_CPP='sun'
 435         HostOS_CPP='sunos4'
 436         ;;
 437 sparc-sun-solaris2*)
 438         HostPlatform=sparc-sun-solaris2
 439         TargetPlatform=sparc-sun-solaris2 #hack
 440         BuildPlatform=sparc-sun-solaris2 #hack
 441         HostPlatform_CPP='sparc_sun_solaris2'
 442         HostArch_CPP='sparc'
 443         HostVendor_CPP='sun'
 444         HostOS_CPP='solaris2'
 445         ;;
 446 sparc*-linux*)
 447         HostPlatform=sparc-unknown-linux
 448         TargetPlatform=sparc-unknown-linux
 449         BuildPlatform=sparc-unknown-linux
 450         HostPlatform_CPP='sparc_unknown_linux'
 451         HostArch_CPP='sparc'
 452         HostVendor_CPP='unknown'
 453         HostOS_CPP='linux'
 454         ;;
 455 sparc-*-openbsd*)
 456         HostPlatform=sparc-unknown-openbsd
 457         TargetPlatform=sparc-unknown-openbsd
 458         BuildPlatform=sparc-unknown-openbsd
 459         HostPlatform_CPP='sparc_unknown_openbsd'
 460         HostArch_CPP='sparc'
 461         HostVendor_CPP='unknown'
 462         HostOS_CPP='openbsd'
 463         ;;
 464 sparc64-*-openbsd*)
 465         HostPlatform=sparc64-unknown-openbsd
 466         TargetPlatform=sparc64-unknown-openbsd
 467         BuildPlatform=sparc64-unknown-openbsd
 468         HostPlatform_CPP='sparc64_unknown_openbsd'
 469         HostArch_CPP='sparc64'
 470         HostVendor_CPP='unknown'
 471         HostOS_CPP='openbsd'
 472         ;;
 473 vax-*-openbsd*)
 474         HostPlatform=vax-unknown-openbsd
 475         TargetPlatform=vax-unknown-openbsd
 476         BuildPlatform=vax-unknown-openbsd
 477         HostPlatform_CPP='vax_unknown_openbsd'
 478         HostArch_CPP='vax'
 479         HostVendor_CPP='unknown'
 480         HostOS_CPP='openbsd'
 481         ;;
 482 *)
 483         echo "Unrecognised platform: $HostPlatform"
 484         exit 1
 485         ;;
 486 esac
 487 echo "Canonicalised to: $HostPlatform"
 488 test  x"$HostPlatform" != x"$TargetPlatform" && echo "Target platform set to $TargetPlatform"
 489 test  x"$BuildPlatform" != x"$HostPlatform"  && echo "Build platform set to $BuildPlatform"
 490
 491 BuildPlatform_CPP=$HostPlatform_CPP
 492 TargetPlatform_CPP=$HostPlatform_CPP
 493 BuildArch_CPP=$HostArch_CPP
 494 TargetArch_CPP=$HostArch_CPP
 495 BuildOS_CPP=$HostOS_CPP
 496 HostOS_Full=$host_os
 497 TargetOS_CPP=$HostOS_CPP
 498 BuildVendor_CPP=$HostVendor_CPP
 499 TargetVendor_CPP=$HostVendor_CPP
 500
 501 AC_SUBST(BuildPlatform)
 502 AC_SUBST(HostPlatform)
 503 AC_SUBST(TargetPlatform)
 504 AC_SUBST(HostPlatform_CPP)
 505 AC_SUBST(BuildPlatform_CPP)
 506 AC_SUBST(TargetPlatform_CPP)
 507
 508 AC_SUBST(HostArch_CPP)
 509 AC_SUBST(BuildArch_CPP)
 510 AC_SUBST(TargetArch_CPP)
 511
 512 AC_SUBST(HostOS_CPP)
 513 AC_SUBST(HostOS_Full)
 514 AC_SUBST(BuildOS_CPP)
 515 AC_SUBST(TargetOS_CPP)
 516
 517 AC_SUBST(HostVendor_CPP)
 518 AC_SUBST(BuildVendor_CPP)
 519 AC_SUBST(TargetVendor_CPP)
 520
 521 AC_SUBST(exeext)
 522
 523 dnl --------------------------------------------------------------
 524 dnl * Calculate absolute path to build tree
 525 dnl --------------------------------------------------------------
 526
 527 AC_MSG_CHECKING(for path to top of build tree)
 528
 529 hardtop=`pwd`
 530
 531 dnl Remove common automounter nonsense
 532 dnl
 533 hardtop=`echo $hardtop | sed 's|^/tmp_mnt.*\(/local/.*\)$|\1|' | sed 's|^/tmp_mnt/|/|' | sed 's|^//\(.\)/|\1:/|' `
 534
 535 dnl Find 'hardtop_plat', the native format for 'hardtop'
 536 dnl (i.e., right kind of \dnl slashes on a Win32 box, but with b-slashes being escaped).
 537 dnl
 538 dnl Note OSTYPE: On Cygwin we need to use 'cygpath' to convert /cygdrive/c/foo to c:/foo
 539 dnl              but we must not do that if we aren't building using Cygwin (notably msys),
 540 dnl              because cygpath doesn't exist.  It seems that 'bash' sets OSTYPE to 'cygwin'
 541 dnl              or 'msys' respectively, but cygwin's 'sh' does not.  So we hackily assume
 542 dnl              that if the shell hasn't set it to 'msys' then we must be in Cygwin.  Sigh.
 543 dnl
 544 dnl              The Right Thing is probably to test $BuildPlatform instead, but we are sloppy
 545 dnl              about setting that correctly at the moment, so we just work around for now.
 546 dnl
 547 dnl              The quotes round "$(OSTYPE)" are essential, for the Cygwin-sh case where OSTYPE
 548 dnl              is not set.
 549 case $HostPlatform in
 550   i386-unknown-mingw32 | i386-unknown-cygwin32)
 551         if test "${OSTYPE}" != "msys"
 552           then
 553             # convert $hardtop to a path that mingw will understand too
 554             cyghardtop=${hardtop}
 555             hardtop=`cygpath -w ${cyghardtop} | sed -e 's@\\\\@/@g'`
 556             hardtop_plat=`cygpath -w ${cyghardtop} | sed -e 's@\\\\@\\\\\\\\@g'`
 557           else
 558             hardtop_plat=${hardtop}
 559         fi
 560         ;;
 561   *)
 562         hardtop_plat=${hardtop}
 563         ;;
 564 esac
 565 AC_SUBST(hardtop)
 566 AC_SUBST(hardtop_plat)
 567
 568 AC_MSG_RESULT(${hardtop})
 569
 570 # We don't support building in directories with spaces.
 571 case "$hardtop" in
 572   *' '*) AC_MSG_ERROR([
 573    The build system does not support building in a directory containing
 574    space characters.  Suggestion: move the build tree somewhere else.])
 575  ;;
 576 esac
 577
 578 dnl --------------------------------------------------------------
 579 dnl * Project specific configuration options
 580 dnl --------------------------------------------------------------
 581 dnl What follows is a bunch of options that can either be configured
 582 dnl through command line options to the configure script or by
 583 dnl supplying defns in the build tree's mk/build.mk. Having the option to
 584 dnl use either is considered a Feature.
 585
 586 dnl ** What command to use to compile compiler sources ?
 587 dnl --------------------------------------------------------------
 588
 589 AC_ARG_WITH([ghc],
 590 [AC_HELP_STRING([--with-ghc=ARG],
 591   [Use ARG as the path to GHC  [default=autodetect]])],
 592   [WithGhc="$withval"],
 593   [if test "$GHC" = ""; then
 594     AC_PATH_PROG([GHC], [ghc])
 595   fi
 596   WithGhc="$GHC"])
 597 AC_SUBST([WithGhc])
 598
 599 AC_ARG_WITH(hc,
 600 [AC_HELP_STRING([--with-hc=ARG],
 601         [Use ARG as the path to the compiler for compiling ordinary
 602          Haskell code  (default= value of --with-ghc)])],
 603 [WithHc="$withval"],
 604 [WithHc=$WithGhc]
 605 )
 606 AC_SUBST(WithHc)
 607
 608 if test "$WithGhc" != ""; then
 609   FPTOOLS_GHC_VERSION([GhcVersion], [GhcMajVersion], [GhcMinVersion], [GhcPatchLevel])dnl
 610   AC_SUBST(GhcVersion)dnl
 611   AC_SUBST(GhcMajVersion)dnl
 612   AC_SUBST(GhcMinVersion)dnl
 613   AC_SUBST(GhcPatchLevel)dnl
 614 fi
 615
 616 AC_PATH_PROGS(NHC,nhc nhc98)
 617 AC_PATH_PROG(HBC,hbc)
 618
 619 dnl ** Which gcc to use?
 620 dnl --------------------------------------------------------------
 621 AC_ARG_WITH(gcc,
 622 [AC_HELP_STRING([--with-gcc=ARG],
 623         [Use ARG as the path to GCC  [default=autodetect]])],
 624 [WhatGccIsCalled="$withval"
 625  if test "x$HostPlatform" = "xi386-unknown-mingw32"
 626     then
 627        if test "${OSTYPE}" != "msys"
 628          then
 629          # Canonicalise to <drive>:/path/to/gcc
 630          withval=`cygpath -w ${withval} | sed -e 's@\\\\@/@g' `
 631        fi
 632  fi;
 633  CC="$withval"
 634  export CC
 635  ],
 636 [WhatGccIsCalled="gcc"]
 637 )
 638 AC_SUBST(WhatGccIsCalled)
 639
 640 dnl ** Booting from .hc files?
 641 dnl --------------------------------------------------------------
 642 AC_ARG_ENABLE(hc-boot,
 643 [AC_HELP_STRING([--enable-hc-boot],
 644 [Boot the Glasgow Haskell Compiler from intermediate .hc files.
 645  (This option is mostly of interest to porters.) [default=no]])],
 646 [ if test x"$enableval" = x"yes"; then
 647         BootingFromHc=YES
 648   else
 649         BootingFromHc=NO
 650   fi
 651 ],
 652 [BootingFromHc=NO]
 653 )
 654 AC_SUBST(BootingFromHc)
 655
 656 dnl ** Booting from unregisterised .hc files?
 657 dnl --------------------------------------------------------------
 658 AC_ARG_ENABLE(hc-boot-unregisterised,
 659 [AC_HELP_STRING([--enable-hc-boot-unregisterised],
 660 [ With --enable-hc-boot, treat the intermediate .hc files as
 661  unregisterised rather than registerised code.
 662  (This option is mostly of interest to porters.) [default=no]])],
 663 [ if test x"$enableval" = x"yes"; then
 664         BootingFromUnregisterisedHc=YES
 665   else
 666         BootingFromUnregisterisedHc=NO
 667   fi
 668 ],
 669 [BootingFromUnregisterisedHc=NO]
 670 )
 671 AC_SUBST(BootingFromUnregisterisedHc)
 672
 673 if test "$BootingFromHc" = "NO"; then
 674 if test "$BootingFromUnregisterisedHc" = "YES"; then
 675 AC_MSG_ERROR([--enable-hc-boot-unregisterised requires --enable-hc-boot.])
 676 fi;
 677 fi;
 678
 679 dnl ** Must have GHC to build GHC, unless --enable-hc-boot is on
 680 if test "$BootingFromHc" = "NO" -a "$WithGhc" = "" -a -d "$srcdir/ghc"; then
 681 AC_MSG_ERROR([GHC is required unless bootstrapping from .hc files.])
 682 fi;
 683
 684 dnl ** --enable-threaded-rts (not used any more)
 685 dnl --------------------------------------------------------------
 686 AC_ARG_ENABLE(threaded-rts,
 687 [AC_HELP_STRING([--enable-threaded-rts],
 688 [DEPRECATED (backwards compatibility only). [default=no]])],
 689 [ if test x"$enableval" = x"yes"; then
 690         ThreadedRts=YES
 691   else
 692         ThreadedRts=NO
 693   fi
 694 ],
 695 [ThreadedRts=NO]
 696 )
 697 AC_SUBST(ThreadedRts)
 698
 699 dnl ** Enable the construction of Win32 DLLs?
 700 dnl --------------------------------------------------------------
 701 dnl
 702 dnl [ The ability to build the RTS and libraries as separate DLLs used
 703 dnl   to be supported, but isn't currently (updates to the RTS, compiler
 704 dnl   and build system would be required to bring it back again.)
 705 dnl   Hence, exposing it as an option is false advertisement, so better
 706 dnl   disable it to avoid confusion (but leave it commented-out rather
 707 dnl   than removed in order to remind ourselves to bring back the
 708 dnl   feature at some stage.) ]
 709 dnl
 710 dnl AC_ARG_ENABLE(win32-dlls,
 711 dnl [  --enable-win32-dlls
 712 dnl         If on a Win32 platform running mingw32/cygwin, enable the
 713 dnl     construction of DLLs containing ghc-compiled code.
 714 dnl ],
 715 dnl [
 716 dnl case $HostOS_CPP in
 717 dnl cygwin32) ;;
 718 dnl mingw32)  ;;
 719 dnl *)    echo "Unrecognised win32 platform: $HostPlatform"
 720 dnl       exit 1
 721 dnl       ;;
 722 dnl esac
 723 dnl EnableWin32DLLs=YES
 724 dnl ],
 725 dnl [EnableWin32DLLs=NO]
 726 dnl )
 727 dnl AC_SUBST(EnableWin32DLLs)
 728 dnl if test x"$EnableWin32DLLs" = "xYES" ; then
 729 dnl  AC_DEFINE(HAVE_WIN32_DLL_SUPPORT)
 730 dnl fi
 731
 732 dnl ** Enable the building of the ObjectIO?
 733 dnl --------------------------------------------------------------
 734 AC_ARG_ENABLE(objectio,
 735 [AC_HELP_STRING([--enable-objectio],
 736 [Build ObjectIO, a portable GUI library for Haskell. [default=no]])],
 737 [ if test x"$enableval" = x"yes"; then
 738         GhcLibsWithObjectIO=YES
 739   else
 740         GhcLibsWithObjectIO=NO
 741   fi
 742 ],
 743 [GhcLibsWithObjectIO=NO]
 744 )
 745 AC_SUBST(GhcLibsWithObjectIO)
 746
 747 dnl ** .NET interop support?
 748 dnl --------------------------------------------------------------
 749 AC_ARG_ENABLE(dotnet,
 750 [AC_HELP_STRING([--enable-dotnet],
 751 [Build .NET interop layer. [default=no]])],
 752 [ if test x"$enableval" = x"yes"; then
 753         DotnetSupport=YES; AC_DEFINE([WANT_DOTNET_SUPPORT], [1], [Define to 1 if you want to include .NET interop support.])
 754   else
 755         DotnetSupport=NO
 756   fi],
 757 [DotnetSupport=NO]
 758 )
 759 AC_SUBST(DotnetSupport)
 760
 761 dnl --------------------------------------------------------------
 762 dnl End of configure script option section
 763 dnl --------------------------------------------------------------
 764
 765
 766 dnl --------------------------------------------------------------
 767 dnl * General configuration checks
 768 dnl --------------------------------------------------------------
 769
 770 dnl ** Can the unix package be built?
 771 dnl --------------------------------------------------------------
 772
 773 if test x"$TargetPlatform" = x"i386-unknown-mingw32"; then
 774    GhcLibsWithUnix=NO
 775 else
 776    GhcLibsWithUnix=YES
 777 fi
 778 AC_SUBST([GhcLibsWithUnix])
 779
 780 dnl ** does #! work?
 781 AC_SYS_INTERPRETER()
 782
 783 dnl ** look for `perl', but only in /bin on Windows
 784 case $HostOS_CPP in
 785 cygwin32|mingw32)
 786       AC_CHECK_PROG(PerlCmd,perl,/bin/perl,,/bin)
 787       if test -z "$PerlCmd"; then
 788          echo "You must install the version of Perl shipped with GHC"
 789          echo "(or a compatible one) in /bin."
 790          exit 1
 791       fi
 792    ;;
 793 *)
 794    AC_PATH_PROG(PerlCmd,perl)
 795    if test -z "$PerlCmd"; then
 796       echo "You must install perl before you can continue"
 797       echo "Perhaps it is already installed, but not in your PATH?"
 798       exit 1
 799    else
 800    FPTOOLS_CHECK_PERL_VERSION
 801    fi
 802    ;;
 803 esac
 804
 805 dnl ** does #! path/to/perl work? (sometimes it's too long...)
 806 FPTOOLS_SHEBANG_PERL
 807
 808 dnl ** check for Python
 809 AC_PATH_PROG(PythonCmd,python)
 810
 811 dnl ** look for GCC and find out which version
 812 dnl     Figure out which C compiler to use.  Gcc is preferred.
 813 dnl     If gcc, make sure it's at least 2.1
 814 dnl
 815 FP_HAVE_GCC
 816 FP_MINGW_GCC
 817
 818 dnl ** figure out how to invoke cpp directly (gcc -E is no good)
 819 AC_PROG_CPP
 820
 821 dnl ** Without optimization some INLINE trickery fails for GHCi
 822 SRC_CC_OPTS="-O"
 823
 824 dnl ** Try to add -mno-cygwin to the C compiler options
 825 FP_CHECK_FLAG([-mno-cygwin], [
 826 SRC_CC_OPTS="-mno-cygwin $SRC_CC_OPTS"
 827 CPPFLAGS="-mno-cygwin $CPPFLAGS"])
 828 AC_SUBST(SRC_CC_OPTS)
 829
 830 dnl ** figure out how to do context diffs
 831 FP_PROG_CONTEXT_DIFF
 832
 833 dnl ** Find find command (for Win32's benefit)
 834 FP_PROG_FIND
 835
 836 dnl ** Find sort command (for the benefit of Win32 environs)
 837 FP_PROG_SORT
 838
 839 dnl ** figure out how to do a BSD-ish install
 840 AC_PROG_INSTALL
 841
 842 dnl If you can run configure, you certainly have /bin/sh
 843 AC_DEFINE([HAVE_BIN_SH], [1], [Define to 1 if you have /bin/sh.])
 844
 845 dnl ** how to invoke `ar' and `ranlib'
 846 FP_PROG_AR_NEEDS_RANLIB
 847 FP_PROG_AR_SUPPORTS_INPUT
 848
 849 dnl ** Check to see whether ln -s works
 850 AC_PROG_LN_S
 851
 852
 853 dnl ** Find the path to sed
 854 AC_PATH_PROG(SedCmd,sed)
 855
 856
 857 dnl ** check for time command
 858 AC_PATH_PROG(TimeCmd,time)
 859
 860 dnl ** check for tar
 861 dnl   if GNU tar is named gtar, look for it first.
 862 AC_PATH_PROGS(TarCmd,gtar tar,tar)
 863
 864 dnl ** check for DocBook toolchain
 865 FP_CHECK_DOCBOOK_DTD
 866 FP_DIR_DOCBOOK_XSL([/usr/share/xml/docbook/stylesheet/nwalsh/current /usr/share/xml/docbook/stylesheet/nwalsh /usr/share/sgml/docbook/docbook-xsl-stylesheets* /usr/share/sgml/docbook/xsl-stylesheets* /opt/kde?/share/apps/ksgmltools2/docbook/xsl /usr/share/docbook-xsl /usr/share/sgml/docbkxsl /usr/local/share/xsl/docbook /sw/share/xml/xsl/docbook-xsl])
 867 FP_PROG_FO_PROCESSOR
 868
 869 dnl ** check for ghc-pkg command
 870 FP_PROG_GHC_PKG
 871
 872 AC_ARG_WITH(greencard,
 873 [AC_HELP_STRING([--with-greencard=ARG],
 874         [Use ARG as the path to greencard  [default=autodetct]])],
 875 [
 876 GreenCardCmd=$withval;
 877 FPTOOLS_GREENCARD(3.00)
 878 ]
 879 )
 880
 881 AC_ARG_ENABLE(src-tree-happy,
 882 [AC_HELP_STRING([--enable-src-tree-happy],
 883         [Build and use source tree (fptools/happy) version of Happy.
 884          [default=autodetect]])],
 885 [ if test x"$enableval" = x"yes"; then
 886         UseSrcTreeHappy=YES
 887   else
 888         UseSrcTreeHappy=NO
 889   fi
 890 ],
 891 [UseSrcTreeHappy=NO]
 892 )
 893 dnl ** check for installed happy binary + version
 894 dnl    (don't do it if we're booting from .hc files though.)
 895 if test "$BootingFromHc" = "NO"; then
 896 FPTOOLS_HAPPY
 897 fi;
 898
 899 AC_ARG_ENABLE(src-tree-haddock,
 900 [AC_HELP_STRING([--enable-src-tree-haddock],
 901         [Build and use source tree (fptools/haddock) version of Haddock.
 902          [default=autodetect]])],
 903 [ if test x"$enableval" = x"yes"; then
 904         UseSrcTreeHaddock=YES
 905   else
 906         UseSrcTreeHaddock=NO
 907   fi
 908 ],
 909 [UseSrcTreeHaddock=NO]
 910 )
 911 dnl ** check for installed haddock
 912 FPTOOLS_HADDOCK
 913
 914 AC_ARG_ENABLE(src-tree-alex,
 915 [AC_HELP_STRING([--enable-src-tree-alex],
 916         [Build and use source tree (fptools/alex) version of Alex.
 917          [default=autodetect]])],
 918 [ if test x"$enableval" = x"yes"; then
 919         UseSrcTreeAlex=YES
 920   else
 921         UseSrcTreeAlex=NO
 922   fi
 923 ],
 924 [UseSrcTreeAlex=NO]
 925 )
 926 dnl ** check for installed alex binary + version
 927 dnl    (don't do it if we're booting from .hc files though.)
 928 if test "$BootingFromHc" = "NO"; then
 929 FPTOOLS_ALEX
 930 fi;
 931
 932 dnl --------------------------------------------------
 933 dnl ### program checking section ends here ###
 934 dnl --------------------------------------------------
 935
 936 dnl --------------------------------------------------
 937 dnl * Platform header file and syscall feature tests
 938 dnl ### checking the state of the local header files and syscalls ###
 939
 940 dnl ** check for full ANSI header (.h) files
 941 AC_HEADER_STDC
 942
 943 dnl ** Enable large file support.  NB. do this before testing the type of
 944 dnl    off_t, because it will affect the result of that test.
 945 AC_SYS_LARGEFILE
 946
 947 dnl ** check for specific header (.h) files that we are interested in
 948 AC_CHECK_HEADERS([bfd.h ctype.h dirent.h dlfcn.h errno.h fcntl.h grp.h limits.h locale.h nlist.h pthread.h pwd.h signal.h sys/mman.h sys/resource.h sys/time.h sys/timeb.h sys/timers.h sys/times.h sys/utsname.h sys/wait.h termios.h time.h utime.h windows.h winsock.h])
 949
 950 AC_CHECK_HEADER([readline/readline.h], [HaveReadlineReadlineH=YES], [HaveReadlineReadlineH=NO])
 951 AC_CHECK_HEADER([readline/history.h], [HaveReadlineHistoryH=YES], [HaveReadlineHistoryH=NO])
 952
 953 if test $HaveReadlineReadlineH = YES && test $HaveReadlineHistoryH = YES ; then
 954   GhcLibsWithReadline=YES
 955   AC_DEFINE([HAVE_READLINE_HEADERS], [1], [Define to 1 if readline/readline.h and readline/history.h exist.])
 956 else
 957   GhcLibsWithReadline=NO
 958   AC_DEFINE([HAVE_READLINE_HEADERS], [0], [Define to 1 if readline/readline.h and readline/history.h exist.])
 959 fi
 960 AC_SUBST(GhcLibsWithReadline)
 961
 962 dnl ** check if it is safe to include both <time.h> and <sys/time.h>
 963 AC_HEADER_TIME
 964
 965 dnl ** how do we get a timezone name, and UTC offset ?
 966 AC_STRUCT_TIMEZONE
 967
 968 dnl ** do we have altzone?
 969 FP_DECL_ALTZONE
 970
 971 dnl ** do we have long longs?
 972 AC_CHECK_TYPES([long long])
 973
 974 dnl ** what are the sizes of various types
 975 AC_CHECK_SIZEOF(char,               1)
 976 AC_CHECK_SIZEOF(double,             8)
 977 AC_CHECK_SIZEOF(float,              4)
 978 AC_CHECK_SIZEOF(int,                4)
 979 AC_CHECK_SIZEOF(long,               4)
 980 if test "$ac_cv_type_long_long" = yes; then
 981 AC_CHECK_SIZEOF(long long,          8)
 982 fi
 983 AC_CHECK_SIZEOF(short,              2)
 984 AC_CHECK_SIZEOF(unsigned char,      1)
 985 AC_CHECK_SIZEOF(unsigned int,       4)
 986 AC_CHECK_SIZEOF(unsigned long,      4)
 987 if test "$ac_cv_type_long_long" = yes; then
 988 AC_CHECK_SIZEOF(unsigned long long, 8)
 989 fi
 990 AC_CHECK_SIZEOF(unsigned short,     2)
 991 AC_CHECK_SIZEOF(void *,             4)
 992
 993 dnl ** what are alignment constraints on various types
 994 FP_CHECK_ALIGNMENT(char)
 995 FP_CHECK_ALIGNMENT(double)
 996 FP_CHECK_ALIGNMENT(float)
 997 FP_CHECK_ALIGNMENT(int)
 998 FP_CHECK_ALIGNMENT(long)
 999 if test "$ac_cv_type_long_long" = yes; then
1000 FP_CHECK_ALIGNMENT(long long)
1001 fi
1002 FP_CHECK_ALIGNMENT(short)
1003 FP_CHECK_ALIGNMENT(unsigned char)
1004 FP_CHECK_ALIGNMENT(unsigned int)
1005 FP_CHECK_ALIGNMENT(unsigned long)
1006 if test "$ac_cv_type_long_long" = yes; then
1007 FP_CHECK_ALIGNMENT(unsigned long long)
1008 fi
1009 FP_CHECK_ALIGNMENT(unsigned short)
1010 FP_CHECK_ALIGNMENT(void *)
1011
1012 FP_CHECK_FUNC([WinExec],
1013   [@%:@include <windows.h>], [WinExec("",0)])
1014
1015 FP_CHECK_FUNC([GetModuleFileName],
1016   [@%:@include <windows.h>], [GetModuleFileName((HMODULE)0,(LPTSTR)0,0)])
1017
1018 dnl ** check return type of signal handlers
1019 dnl Foo: assumes we can use prototypes.
1020 dnl On BCC, signal handlers have type "int(void)", elsewhere its "void(int)".
1021 dnl AC_CACHE_CHECK([type of signal handlers], ac_cv_type_signal_handler,
1022 dnl [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
1023 dnl #include <signal.h>
1024 dnl #ifdef signal
1025 dnl #undef signal
1026 dnl #endif
1027 dnl void (*signal (int, void (*)(int)))(int);
1028 dnl ]],
1029 dnl [[int i;]])],
1030 dnl [ac_cv_type_signal_handler=void_int],
1031 dnl [ac_cv_type_signal_handler=int_void])])
1032 dnl if test "$ac_cv_type_signal_handler" = void_int; then
1033 dnl AC_DEFINE(VOID_INT_SIGNALS)
1034 dnl fi
1035
1036 dnl On BCC, signal handlers have type "int(void)", elsewhere its "void(int)".
1037 AC_TYPE_SIGNAL
1038 if test "$ac_cv_type_signal" = void; then
1039   AC_DEFINE([VOID_INT_SIGNALS], [1], [Define to 1 if signal handlers have type void (*)(int). Otherwise, they're assumed to have type int (*)(void).])
1040 fi
1041
1042 dnl ** check for more functions
1043 dnl ** The following have been verified to be used in ghc/, but might be used somewhere else, too.
1044 AC_CHECK_FUNCS([getclock getrusage gettimeofday setitimer siginterrupt sysconf times])
1045 dnl ** For ghc/rts/gmp:
1046 AC_CHECK_FUNCS([getpagesize])
1047
1048 dnl ** check whether this machine has gmp3 installed
1049 AC_CHECK_LIB(gmp,  __gmpz_fdiv_qr, HaveLibGmp=YES; LibGmp=gmp,
1050   AC_CHECK_LIB(gmp3, __gmpz_fdiv_qr,  HaveLibGmp=YES; LibGmp=gmp3,
1051     HaveLibGmp=NO; LibGmp=not-installed))
1052 AC_SUBST(HaveLibGmp)
1053 AC_SUBST(LibGmp)
1054
1055 dnl ** (Mac OS X only: check for GMP.framework)
1056 HaveFrameworkGMP=NO
1057 if test $HostPlatform = "powerpc-apple-darwin"; then
1058  AC_MSG_CHECKING([for GMP.framework])
1059  save_libs="$LIBS"
1060  LIBS="-framework GMP"
1061  AC_TRY_LINK_FUNC(__gmpz_fdiv_qr, HaveFrameworkGMP=YES,)
1062  if test $HaveFrameworkGMP = YES; then
1063   AC_DEFINE([HAVE_FRAMEWORK_GMP], [1], [Define to 1 if GMP.framework is installed (Mac OS X only).])
1064  fi;
1065  LIBS="$save_libs"
1066  AC_MSG_RESULT([$HaveFrameworkGMP])
1067 fi;
1068 AC_SUBST(HaveFrameworkGMP)
1069
1070 dnl ** check for mingwex library
1071 AC_CHECK_LIB(mingwex, closedir, HaveLibMingwEx=YES, HaveLibMingwEx=NO)
1072 AC_SUBST(HaveLibMingwEx)
1073
1074 if test $HaveLibMingwEx = YES ; then
1075   AC_DEFINE([HAVE_MINGWEX], [1], [Define to 1 if you have the mingwex library.])
1076 fi
1077
1078 if test "$HaveLibGmp" = "NO"; then
1079 if test "$HostArch_CPP" = "ia64" -o "$HostArch_CPP" = "mipseb" ; then
1080 AC_MSG_ERROR([You need to install libgmp (the in-tree version does not work on IA64 or mips64).])
1081 fi;
1082 fi;
1083
1084 dnl ** check whether this machine has BFD and liberty installed (used for debugging)
1085 dnl    the order of these tests matters: bfd needs liberty
1086 AC_CHECK_LIB(iberty, xmalloc)
1087 AC_CHECK_LIB(bfd,    bfd_init)
1088
1089 dnl ** check for readline, for Hugs and hslibs' Readline
1090 dnl ncurses supersedes termcap and curses, but for compatibility,
1091 dnl we have to check for all...
1092 AC_CHECK_LIB(ncurses, tputs, HaveLibTermcap=YES; LibTermcap=ncurses,
1093   AC_CHECK_LIB(termcap, tputs, HaveLibTermcap=YES; LibTermcap=termcap,
1094     AC_CHECK_LIB(curses, tputs, HaveLibTermcap=YES; LibTermcap=curses,
1095       HaveLibTermcap=NO; LibTermcap=not-installed)))
1096
1097 if test $HaveLibTermcap = YES ; then
1098   LIBS="-l$LibTermcap $LIBS"
1099   AC_CHECK_LIB(readline, readline, HaveLibReadline=YES, HaveLibReadline=NO)
1100 fi
1101
1102 if test $HaveLibTermcap = YES && test x"$HaveLibReadline" = xYES ; then
1103   AC_DEFINE([HAVE_READLINE_LIBS], [1], [Define to 1 if readline plus any additional libs needed for it exist.])
1104   LibsReadline="readline $LibTermcap"
1105 else
1106   AC_DEFINE([HAVE_READLINE_LIBS], [0], [Define to 1 if readline plus any additional libs needed for it exist.])
1107   LibsReadline=
1108 fi
1109 AC_SUBST(LibsReadline)
1110
1111 if test "$HaveLibReadline"; then
1112   AC_CHECK_LIB(readline, rl_erase_empty_line,
1113     [AC_DEFINE([HAVE_READLINE_4], [1], [Define to 1 if readline has version >= 4.0.])],
1114     [AC_DEFINE([HAVE_READLINE_4], [0], [Define to 1 if readline has version >= 4.0.])])
1115   AC_CHECK_LIB(readline, rl_free_undo_list,
1116     [AC_DEFINE([HAVE_READLINE_4_2], [1], [Define to 1 if readline has version >= 4.2.])],
1117     [AC_DEFINE([HAVE_READLINE_4_2], [0], [Define to 1 if readline has version >= 4.2.])])
1118 else
1119   AC_DEFINE([HAVE_READLINE_4], [0], [Define to 1 if readline has version >= 4.0.])
1120   AC_DEFINE([HAVE_READLINE_4_2], [0], [Define to 1 if readline has version >= 4.2.])
1121 fi
1122
1123 dnl ** check for math library
1124 AC_CHECK_FUNC(atan,[fp_libm_not_needed=yes;LIBM=],[fp_libm_not_needed=dunno])
1125 if test x"$fp_libm_not_needed" = xdunno; then
1126    AC_CHECK_LIB([m], [atan], [LIBS="-lm $LIBS"; LIBM="-lm"],[LIBM=])
1127 fi
1128 AC_SUBST([LIBM])
1129
1130 dnl ################################################################
1131 dnl Check for libraries
1132 dnl ################################################################
1133
1134 dnl ** check for libdl & RTLD_NEXT
1135
1136 AC_CHECK_LIB(dl, dlopen,
1137     [HaveLibDL=YES
1138      AC_DEFINE([HAVE_LIBDL], [1], [Define to 1 if you need -ldl to get dlopen().])
1139      LIBS="$LIBS -ldl"],
1140     [HaveLibDL=NO])
1141 AC_SUBST(HaveLibDL)
1142
1143 dnl ** sometimes RTLD_NEXT is hidden in #ifdefs we really don't wan to set
1144 AC_MSG_CHECKING(for RTLD_NEXT from dlfcn.h)
1145 AC_EGREP_CPP(yes,
1146 [
1147  #include <dlfcn.h>
1148  #ifdef RTLD_NEXT
1149         yes
1150  #endif
1151 ], [
1152   AC_MSG_RESULT(yes)
1153   AC_DEFINE([HAVE_RTLDNEXT], [1], [Define to 1 if we can see RTLD_NEXT in dlfcn.h.])
1154   HaveRtldNext=YES
1155 ], [
1156   AC_MSG_RESULT(no)
1157   HaveRtldNext=NO
1158   ])
1159 AC_SUBST(HaveRtldNext)
1160
1161 dnl ** RTLD_LOCAL isn't available on cygwin or openbsd
1162 AC_MSG_CHECKING(for RTLD_LOCAL from dlfcn.h)
1163 AC_EGREP_CPP(yes,
1164 [
1165  #include <dlfcn.h>
1166  #ifdef RTLD_LOCAL
1167         yes
1168  #endif
1169 ], [
1170   AC_MSG_RESULT(yes)
1171   AC_DEFINE([HAVE_RTLDLOCAL], [1], [Define to 1 if RTLD_LOCAL is available.])
1172   HaveRtldLocal=YES
1173 ], [
1174   AC_MSG_RESULT(no)
1175   HaveRtldLocal=NO
1176   ])
1177 AC_SUBST(HaveRtldLocal)
1178
1179 dnl ** RTLD_GLOBAL isn't available on openbsd
1180 AC_MSG_CHECKING(for RTLD_GLOBAL from dlfcn.h)
1181 AC_EGREP_CPP(yes,
1182 [
1183  #include <dlfcn.h>
1184  #ifdef RTLD_GLOBAL
1185         yes
1186  #endif
1187 ], [
1188   AC_MSG_RESULT(yes)
1189   AC_DEFINE([HAVE_RTLDGLOBAL], [1], [Define to 1 if RTLD_GLOBAL is available.])
1190   HaveRtldGlobal=YES
1191 ], [
1192   AC_MSG_RESULT(no)
1193   HaveRtldGlobal=NO
1194   ])
1195 AC_SUBST(HaveRtldGlobal)
1196
1197 dnl ** RTLD_NOW isn't available on openbsd
1198 AC_MSG_CHECKING(for RTLD_NOW from dlfcn.h)
1199 AC_EGREP_CPP(yes,
1200 [
1201  #include <dlfcn.h>
1202  #ifdef RTLD_NOW
1203         yes
1204  #endif
1205 ], [
1206   AC_MSG_RESULT(yes)
1207   AC_DEFINE([HAVE_RTLDNOW], [1], [Define to 1 if we can see RTLD_NOW in dlfcn.h])
1208   HaveRtldNow=YES
1209 ], [
1210   AC_MSG_RESULT(no)
1211   HaveRtldNow=NO
1212   ])
1213 AC_SUBST(HaveRtldNow)
1214
1215 dnl --------------------------------------------------
1216 dnl * Miscellaneous feature tests
1217 dnl --------------------------------------------------
1218
1219 dnl ** can we get alloca?
1220 AC_FUNC_ALLOCA
1221
1222 dnl ** Working vfork?
1223 AC_FUNC_FORK
1224
1225 dnl ** determine whether or not const works
1226 AC_C_CONST
1227
1228 dnl ** are we big endian?
1229 AC_C_BIGENDIAN
1230
1231 dnl ** check for leading underscores in symbol names
1232 FP_LEADING_UNDERSCORE
1233
1234 dnl ** check for ld, whether it has an -x option, and if it is GNU ld
1235 FP_PROG_LD_X
1236 FP_PROG_LD_IS_GNU
1237
1238 dnl ** check for Apple-style dead-stripping support
1239 dnl    (.subsections-via-symbols assembler directive)
1240
1241
1242 AC_MSG_CHECKING(for .subsections_via_symbols)
1243 AC_TRY_COMPILE(,[__asm__ (".subsections_via_symbols");],
1244     [
1245         AC_MSG_RESULT(yes)
1246         AC_DEFINE([HAVE_SUBSECTIONS_VIA_SYMBOLS],[1],
1247             [Define to 1 if Apple-style dead-stripping is supported.])
1248     ],
1249     [
1250         AC_MSG_RESULT(no)
1251         AC_DEFINE([HAVE_SUBSECTIONS_VIA_SYMBOLS],[0],
1252             [Define to 1 if Apple-style dead-stripping is supported.])
1253     ])
1254
1255 AC_CONFIG_FILES([mk/config.mk])
1256 AC_CONFIG_COMMANDS([mk/stamp-h],[echo timestamp > mk/stamp-h])
1257 AC_OUTPUT