configure.in 29.6 KB
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dnl == autoconf source for the Glasgow FP tools ==
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dnl (run "grep '^dnl \*' configure.in | sed -e 's/dnl / /g; s/\*\*/   +/g;'"
dnl  (or some such) to see the outline of this file)
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dnl
#
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# (c) The AQUA Project, Glasgow University, 1994-1998
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#
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# Configure script template for the Glasgow functional programming tools
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#
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# Process with 'autoconf' to get a working configure script.
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#
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# For the generated configure script, do "./configure --help" to
# see what flags are available. (Better yet, read the documentation!)
#

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# First off, a distrib sanity check..
AC_INIT(mk/config.mk.in)
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dnl * Declare subdirectories that have a private configure script
dnl
dnl After the toplevel configuration is complete, the script will recurse into
dnl these subdirectories (the use of cache values makes repeated checks cheap)
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dnl (We probably have to add hslibs/{OpenGL,GLUT} here later...)
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AC_CONFIG_SUBDIRS(ghc)

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# -------------------------------------------------------------------------
# Prepare to generate the following header files
#
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#
AC_CONFIG_HEADER(mk/config.h)
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# No, semi-sadly, we don't do `--srcdir'...
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if test x"$srcdir" != 'x.' ; then
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    echo "This configuration does not support the \`--srcdir' option.."
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    exit 1
fi

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#
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# Remove common automounter nonsense + convert from UNC to DOS style paths
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# (UNC awareness isn't quite there yet for cygwin32-beta18 and consituent tools.)
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#
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hardtop=`pwd`
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hardtop=`echo $hardtop | sed 's|^/tmp_mnt.*\(/local/.*\)$|\1|' | sed 's|^/tmp_mnt/|/|' | sed 's|^/grasp_tmp|/local/grasp_tmp|' | sed 's|^//\(.\)/|\1:/|' `
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echo ''
echo "*** The top of your build tree is: $hardtop"
AC_SUBST(hardtop)

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dnl--------------------------------------------------------------------
dnl * Choose host(/target/build) platform
dnl--------------------------------------------------------------------

dnl Guess host/target/build platform(s) if necessary.
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AC_CANONICAL_SYSTEM
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# "$host" defaults to "$target"
if test "x$host" = xNONE ; then
    host=$target
fi

dnl ** canonicalize platform names
BuildPlatform=`/bin/sh $srcdir/config.sub $build` || exit 1
HostPlatform=`/bin/sh $srcdir/config.sub $host` || exit 1
TargetPlatform=`/bin/sh $srcdir/config.sub $target` || exit 1

if test x"$TargetPlatform" != x"$HostPlatform" ; then
    echo "GHC configuration does not support differing host/target (i.e., cross-compiling)"
    exit 1
fi
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exeext=''
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#
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# The following will be more difficult when we *are* cross-compiling.
# Suitable names to slam in *_CPP are in platform.h.in.
# We also record the architecture, vendor, and operating system (OS)
# separately.
case $HostPlatform in
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alpha*-dec-osf[[12]]*)
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	HostPlatform=alpha-dec-osf1   # canonicalise for our purposes
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	TargetPlatform=alpha-dec-osf1 # this will work for now... (hack)
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	BuildPlatform=alpha-dec-osf1  # hack
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        HostPlatform_CPP='alpha_dec_osf1'
        HostArch_CPP='alpha'
        HostVendor_CPP='dec'
        HostOS_CPP='osf1'
        ;;
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alpha*-dec-osf[[345]]*)
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	HostPlatform=alpha-dec-osf3   # canonicalise for our purposes
	TargetPlatform=alpha-dec-osf3 # this will work for now... (hack)
	BuildPlatform=alpha-dec-osf3  # hack
        HostPlatform_CPP='alpha_dec_osf3'
        HostArch_CPP='alpha'
        HostVendor_CPP='dec'
        HostOS_CPP='osf3'
        ;;
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alpha*-unknown-linux)
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	HostPlatform=alpha-unknown-linux
	TargetPlatform=alpha-unknown-linux
	BuildPlatform=alpha-unknown-linux
        HostPlatform_CPP='alpha_unknown_linux'
        HostArch_CPP='alpha'
        HostVendor_CPP='unknown'
        HostOS_CPP='linux'
        ;;
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alpha*-unknown-freebsd*)
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	HostPlatform=alpha-unknown-freebsd
	TargetPlatform=alpha-unknown-freebsd
	BuildPlatform=alpha-unknown-freebsd
        HostPlatform_CPP='alpha_unknown_freebsd'
        HostArch_CPP='alpha'
        HostVendor_CPP='unknown'
        HostOS_CPP='freebsd'
        ;;
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hppa1.1-hp-hpux*)
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	HostPlatform=hppa1.1-hp-hpux  # canonicalise for our purposes (hack)
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	TargetPlatform=hppa1.1-hp-hpux
	BuildPlatform=hppa1.1-hp-hpux
        HostPlatform_CPP='hppa1_1_hp_hpux'
        HostArch_CPP='hppa1_1'
        HostVendor_CPP='hp'
        HostOS_CPP='hpux'
        ;;
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i[[3456]]86-*-linuxaout*)
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	HostPlatform=i386-unknown-linuxaout   # hack again
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	TargetPlatform=i386-unknown-linuxaout
	BuildPlatform=i386-unknown-linuxaout
        HostPlatform_CPP='i386_unknown_linuxaout'
        HostArch_CPP='i386'
        HostVendor_CPP='unknown'
        HostOS_CPP='linuxaout'
        ;;
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i[[3456]]86-*-linux*)
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	HostPlatform=i386-unknown-linux # hack again
	TargetPlatform=i386-unknown-linux
	BuildPlatform=i386-unknown-linux
        HostPlatform_CPP='i386_unknown_linux'
        HostArch_CPP='i386'
        HostVendor_CPP='unknown'
        HostOS_CPP='linux'
        ;;
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i[[3456]]86-*-freebsd[[3-9]]*) # FreeBSD 3.0+ uses ELF
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	HostPlatform=i386-unknown-freebsd # hack again
	TargetPlatform=i386-unknown-freebsd
	BuildPlatform=i386-unknown-freebsd
        HostPlatform_CPP='i386_unknown_freebsd'
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        HostArch_CPP='i386'
        HostVendor_CPP='unknown'
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        HostOS_CPP='freebsd'
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        ;;
i[[3456]]86-*-freebsd2*) # Older FreeBSDs are a.out
	HostPlatform=i386-unknown-freebsd2 # hack again
	TargetPlatform=i386-unknown-freebsd2
	BuildPlatform=i386-unknown-freebsd2
        HostPlatform_CPP='i386_unknown_freebsd2'
        HostArch_CPP='i386'
        HostVendor_CPP='unknown'
        HostOS_CPP='freebsd2'
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        ;;
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i[[3456]]86-*-netbsd*)
	HostPlatform=i386-unknown-netbsd # hack again
	TargetPlatform=i386-unknown-netbsd
	BuildPlatform=i386-unknown-netbsd
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        HostPlatform_CPP='i386_unknown_netbsd'
        HostArch_CPP='i386'
        HostVendor_CPP='unknown'
        HostOS_CPP='netbsd'
        ;;
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i[[3456]]86-*-openbsd*)
	HostPlatform=i386-unknown-openbsd # hack again
	TargetPlatform=i386-unknown-openbsd
	BuildPlatform=i386-unknown-openbsd
        HostPlatform_CPP='i386_unknown_openbsd'
        HostArch_CPP='i386'
        HostVendor_CPP='unknown'
        HostOS_CPP='openbsd'
        ;;
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i[[3456]]86-*-solaris2*)
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	HostPlatform=i386-unknown-solaris2 # hack again
	TargetPlatform=i386-unknown-solaris2
	BuildPlatform=i386-unknown-solaris2
        HostPlatform_CPP='i386_unknown_solaris2'
        HostArch_CPP='i386'
        HostVendor_CPP='unknown'
        HostOS_CPP='solaris2'
        ;;
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i[[3456]]86-*-cygwin*)
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	HostPlatform=i386-unknown-cygwin32 # hack again
	TargetPlatform=i386-unknown-cygwin32
	BuildPlatform=i386-unknown-cygwin32
        HostPlatform_CPP='i386_unknown_cygwin32'
        HostArch_CPP='i386'
        HostVendor_CPP='unknown'
        HostOS_CPP='cygwin32'
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	exeext='.exe'
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        ;;
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i[[3456]]86-*-mingw32*)
	HostPlatform=i386-unknown-mingw32 # hack again
	TargetPlatform=i386-unknown-mingw32
	BuildPlatform=i386-unknown-mingw32
        HostPlatform_CPP='i386_unknown_mingw32'
        HostArch_CPP='i386'
        HostVendor_CPP='unknown'
        HostOS_CPP='mingw32'
	exeext='.exe'
        ;;
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m68k-next-nextstep2)
        HostPlatform_CPP='m68k_next_nextstep2'
        HostArch_CPP='m68k'
        HostVendor_CPP='next'
        HostOS_CPP='nextstep2'
        ;;
m68k-next-nextstep3)
        HostPlatform_CPP='m68k_next_nextstep3'
        HostArch_CPP='m68k'
        HostVendor_CPP='next'
        HostOS_CPP='nextstep3'
        ;;
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i[[3456]]86-next-nextstep3)
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	HostPlatform=i386-next-nextstep3 # hack again
	TargetPlatform=i386-next-nextstep3
	BuildPlatform=i386-next-nextstep3
        HostPlatform_CPP='i386_next_nextstep3'
        HostArch_CPP='i386'
        HostVendor_CPP='next'
        HostOS_CPP='nextstep3'
        ;;
m68k-sun-sunos4*)
	HostPlatform=m68k-sun-sunos4
	TargetPlatform=m68k-sun-sunos4 #hack
	BuildPlatform=m68k-sun-sunos4 #hack
        HostPlatform_CPP='m68k_sun_sunos4'
        HostArch_CPP='m68k'
        HostVendor_CPP='sun'
        HostOS_CPP='sunos4'
        ;;
mips-dec-ultrix*)
        HostPlatform_CPP='mips_dec_ultrix'
        HostArch_CPP='mipsel'   # NB a little different
        HostVendor_CPP='dec'
        HostOS_CPP='ultrix'
        ;;
mips-sgi-irix*)
	HostPlatform=mips-sgi-irix
	TargetPlatform=mips-sgi-irix #hack
	BuildPlatform=mips-sgi-irix #hack
        HostPlatform_CPP='mips_sgi_irix'
        HostArch_CPP='mipseb'   # NB a little different
        HostVendor_CPP='sgi'
        HostOS_CPP='irix'
        ;;
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rs6000-ibm-aix*)
	HostPlatform=rs6000-ibm-aix
	TargetPlatform=rs6000-ibm-aix #hack
	BuildPlatform=rs6000-ibm-aix #hack
        HostPlatform_CPP='rs6000_ibm_aix'
        HostArch_CPP='rs6000'
        HostVendor_CPP='ibm'
        HostOS_CPP='aix'
        ;;
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powerpc-ibm-aix*)
	HostPlatform=powerpc-ibm-aix
	TargetPlatform=powerpc-ibm-aix #hack
	BuildPlatform=powerpc-ibm-aix #hack
        HostPlatform_CPP='powerpc_ibm_aix'
        HostArch_CPP='powerpc'
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        HostVendor_CPP='ibm'
        HostOS_CPP='aix'
        ;;
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powerpc-apple-macosx*)
      HostPlatform=powerpc-apple-macosx
      TargetPlatform=powerpc-apple-macosx #hack
      BuildPlatform=powerpc-apple-macosx #hack
        HostPlatform_CPP='powerpc_apple_macosx'
        HostArch_CPP='powerpc'
        HostVendor_CPP='apple'
        HostOS_CPP='macosx'
        ;;
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sparc-sun-sunos4*)
	HostPlatform=sparc-sun-sunos4
	TargetPlatform=sparc-sun-sunos4 #hack
	BuildPlatform=sparc-sun-sunos4 #hack
        HostPlatform_CPP='sparc_sun_sunos4'
        HostArch_CPP='sparc'
        HostVendor_CPP='sun'
        HostOS_CPP='sunos4'
        ;;
sparc-sun-solaris2*)
	HostPlatform=sparc-sun-solaris2
	TargetPlatform=sparc-sun-solaris2 #hack
	BuildPlatform=sparc-sun-solaris2 #hack
        HostPlatform_CPP='sparc_sun_solaris2'
        HostArch_CPP='sparc'
        HostVendor_CPP='sun'
        HostOS_CPP='solaris2'
        ;;
*)
        echo "Unrecognised platform: $HostPlatform"
        exit 1
        ;;
esac
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echo "Canonicalised to: $HostPlatform"
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test  x"$HostPlatform" != x"$TargetPlatform" && echo "Target platform set to $TargetPlatform"
test  x"$BuildPlatform" != x"$HostPlatform"  && echo "Build platform set to $BuildPlatform"
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BuildPlatform_CPP=$HostPlatform_CPP
TargetPlatform_CPP=$HostPlatform_CPP
BuildArch_CPP=$HostArch_CPP
TargetArch_CPP=$HostArch_CPP
BuildOS_CPP=$HostOS_CPP
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HostOS_Full=$host_os
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TargetOS_CPP=$HostOS_CPP
BuildVendor_CPP=$HostVendor_CPP
TargetVendor_CPP=$HostVendor_CPP
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dnl Cannot afford all these SUBSTs (because of braindead seds w/ 99 cmd limits)
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dnl AC_SUBST(BuildPlatform)
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AC_SUBST(HostPlatform)
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AC_SUBST(TargetPlatform)
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AC_SUBST(HostPlatform_CPP)
dnl AC_SUBST(BuildPlatform_CPP)
dnl AC_SUBST(TargetPlatform_CPP)
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AC_SUBST(HostArch_CPP)
dnl AC_SUBST(BuildArch_CPP)
dnl AC_SUBST(TargetArch_CPP)
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AC_SUBST(HostOS_CPP)
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AC_SUBST(HostOS_Full)
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dnl AC_SUBST(BuildOS_CPP)
dnl AC_SUBST(TargetOS_CPP)
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AC_SUBST(HostVendor_CPP)
dnl AC_SUBST(BuildVendor_CPP)
dnl AC_SUBST(TargetVendor_CPP)

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AC_SUBST(exeext)

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dnl --------------------------------------------------------------
dnl * Project specific configuration options
dnl --------------------------------------------------------------
dnl What follows is a bunch of options that can either be configured
dnl through command line options to the configure script or by
dnl supplying defns in the build tree's mk/build.mk. Having the option to
dnl use either is considered a Feature.

dnl ** What command to use to compile compiler sources ?
dnl --------------------------------------------------------------
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if test "$GHC" = ""; then
  AC_PATH_PROG(GHC,ghc)
fi

AC_ARG_WITH(ghc,
[  --with-ghc=<haskell compiler>
        Use a command different from 'ghc' to compile GHC-specific Haskell code
	    (including GHC itself).
],
[WithGhc="$withval"],
[WithGhc=$GHC]
)
AC_SUBST(WithGhc)

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AC_ARG_WITH(hc,
[  --with-hc=<haskell compiler>
        Use a command different from 'ghc' to compile generic Haskell code.
],
[WithHc="$withval"],
[WithHc=$WithGhc]
)
AC_SUBST(WithHc)

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if test "$WithGhc" != ""; then
  FPTOOLS_GHC_VERSION([GhcVersion], [GhcMajVersion], [GhcMinVersion], [GhcPatchLevel])dnl
  AC_SUBST(GhcVersion)dnl
  AC_SUBST(GhcMajVersion)dnl
  AC_SUBST(GhcMinVersion)dnl
  AC_SUBST(GhcPatchLevel)dnl
fi

AC_PATH_PROGS(NHC,nhc nhc98)
AC_PATH_PROG(HBC,hbc)

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dnl ** Which gcc to use?
dnl --------------------------------------------------------------
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AC_ARG_WITH(gcc,
[  --with-gcc=<gcc command>
        Use a different command instead of 'gcc' for the GNU C compiler.
],
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[WhatGccIsCalled="$withval"
 CC="$withval"],
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[WhatGccIsCalled="gcc"]
)
AC_SUBST(WhatGccIsCalled)

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dnl ** Booting from .hc files?
dnl --------------------------------------------------------------
AC_ARG_ENABLE(hc-boot,
[  --enable-hc-boot
        Boot the Glasgow Haskell Compiler from intermediate .hc files.
        (This option is mostly of interest to porters.)
],
[BootingFromHc=YES],
[BootingFromHc=NO]
)
AC_SUBST(BootingFromHc)

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dnl ** Booting from unregisterised .hc files?
dnl --------------------------------------------------------------
AC_ARG_ENABLE(hc-boot-unregisterised,
[  --enable-hc-boot-unregisterised
        With --enable-hc-boot, treat the intermediate .hc files as
        unregisterised rather than registerised code.
        (This option is mostly of interest to porters.)
],
[BootingFromUnregisterisedHc=YES],
[BootingFromUnregisterisedHc=NO]
)
AC_SUBST(BootingFromUnregisterisedHc)

if test "$BootingFromHc" = "NO"; then
if test "$BootingFromUnregisterisedHc" = "YES"; then
AC_MSG_ERROR([--enable-hc-boot-unregisterised requires --enable-hc-boot.])
fi;
fi;

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dnl ** Enable the construction of Win32 DLLs?
dnl --------------------------------------------------------------
AC_ARG_ENABLE(win32-dlls,
[  --enable-win32-dlls
        If on a Win32 platform running mingw32/cygwin, enable the
	construction of DLLs containing ghc-compiled code.
],
[
case $HostOS_CPP in
cygwin32) ;;
mingw32)  ;;
*)    echo "Unrecognised win32 platform: $HostPlatform"
      exit 1
      ;;
esac
EnableWin32DLLs=YES
],
[EnableWin32DLLs=NO]
)
AC_SUBST(EnableWin32DLLs)
if test x"$EnableWin32DLLs" = "xYES" ; then
 AC_DEFINE(HAVE_WIN32_DLL_SUPPORT)
fi

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dnl ** Enable the building of the OpenGL/GLUT binding in hslibs?
dnl --------------------------------------------------------------
AC_ARG_ENABLE(hopengl,
[  --enable-hopengl
        Build HOpenGL, a Haskell binding for OpenGL/GLUT, too.
        (This option is only relevant when hslibs are built.)
],
[GhcLibsWithHOpenGL=YES],
[GhcLibsWithHOpenGL=NO]
)
AC_SUBST(GhcLibsWithHOpenGL)

dnl ** Use a specific version of the GLUT API
dnl --------------------------------------------------------------
AC_ARG_WITH(glut-api,
[  --with-glut-api=<version>
        Use a specific version of the GLUT API when building HOpenGL.
])
test -n "$with_glut_api"  && CPPFLAGS="$CPPFLAGS -DGLUT_API_VERSION=$with_glut_api"


dnl ** Use a specific version of the GLUT API
dnl --------------------------------------------------------------
AC_ARG_WITH(glut-xlib,
[  --with-glut-xlib=<version>
        Use a specific version of the GLUT Xlib implementation when building HOpenGL.
])
test -n "$with_glut_xlib" && CPPFLAGS="$CPPFLAGS -DGLUT_XLIB_IMPLEMENTATION=$with_glut_xlib"


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dnl --------------------------------------------------------------
dnl End of configure script option section
dnl --------------------------------------------------------------


dnl --------------------------------------------------------------
dnl * General configuration checks
dnl --------------------------------------------------------------
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dnl ** does #! work?
AC_SYS_INTERPRETER()
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dnl ** look for `perl', but only in /bin on Windows
case $HostOS_CPP in
cygwin32|mingw32)
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      AC_CHECK_PROG(PerlCmd,perl,/bin/perl,,/bin)
      if test -z "$PerlCmd"; then
         echo "You must install the version of Perl shipped with GHC"
         echo "(or a compatible one) in /bin."
         exit 1
      fi
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   ;;
*)
   AC_PATH_PROG(PerlCmd,perl)
   if test -z "$PerlCmd"; then
      echo "You must install perl before you can continue"
      echo "Perhaps it is already installed, but not in your PATH?"
      exit 1
   else
   FPTOOLS_CHECK_PERL_VERSION
   fi
   ;;
esac
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dnl ** does #! path/to/perl work? (sometimes it's too long...)
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FPTOOLS_SHEBANG_PERL
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dnl ** look for GCC and find out which version
dnl     Figure out which C compiler to use.  Gcc is preferred.
dnl     If gcc, make sure it's at least 2.1
dnl
AC_PROG_CC
FPTOOLS_HAVE_GCC

dnl ** figure out how to invoke cpp directly (gcc -E is no good)
AC_PROG_CPP
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dnl ** does the C compiler support the following options?
FPTOOLS_CC_FLAG(-mwin32,CC_SUPPORTS_MWIN32)
FPTOOLS_CC_FLAG(-mno-cygwin,CC_SUPPORTS_MNO_CYGWIN)

EXTRA_CC_OPTS="$CC_SUPPORTS_MNO_CYGWIN $CC_SUPPORTS_MWIN32"
SRC_CC_OPTS="-O $EXTRA_CC_OPTS"
CPPFLAGS="$EXTRA_CC_OPTS $CPPFLAGS"
AC_SUBST(SRC_CC_OPTS)
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dnl ** figure out how to do context diffs
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FPTOOLS_PROG_DIFF
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dnl ** Find find command (for Win32's benefit)
AC_PATH_PROG(FindCmd, find)
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dnl ** look for a decent parser generator (bison preferred)
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dnl (FPTOOLS_PROG_YACCY is AC_PROG_YACC, but with some extra testing 
dnl  on the suitability of the 'yacc' returned.)
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FPTOOLS_PROG_YACCY
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dnl ** Find lex command (lex or flex) - *doesn't* use autoconf's
dnl    AC_PROG_LEX, since it doesn't actually check whether 'lex'
dnl    exists if 'flex' doesn't.
AC_PROG_LEX_STRICT
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dnl ** figure out how to do a BSD-ish install
AC_PROG_INSTALL
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dnl If you can run configure, you certainly have /bin/sh
AC_DEFINE(HAVE_BIN_SH)

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dnl ** how to invoke `ar' and `ranlib'
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FPTOOLS_PROG_AR_AND_RANLIB
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dnl ** Check to see whether ln -s works
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AC_PROG_LN_S

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dnl ** Find the path to sed
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AC_PATH_PROG(SedCmd,sed)

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dnl ** check for time command
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AC_PATH_PROG(TimeCmd,time)

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dnl ** check for tar
dnl   if GNU tar is named gtar, look for it first.
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AC_PATH_PROGS(TarCmd,gtar tar,tar)
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dnl ** check for gzip/compress
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AC_PATH_PROGS(CompressCmd,gzip compress,gzip)

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dnl ** check for jade/openjade & determine a working catalog
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AC_PATH_PROGS(JadeCmd,openjade jade,jade)
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FPTOOLS_DOCBOOK_CATALOG(Catalog, $JadeCmd, docs/fptools-both.dsl, 
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                        /etc/sgml/catalog /etc/sgml.catalog /usr/share/sgml/CATALOG.docbkdsl glafp-utils/docbook/CATALOG*)
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if test -z "$Catalog"; then
  AC_MSG_RESULT([Warning: You will not be able to build the documentation.])
fi
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case $HostOS_CPP in
   mingw32)
      Catalog=`cygpath -w $hardtop/$Catalog`
      ;;
   *)
      Catalog=$hardtop/$Catalog
      ;;
esac   
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AC_SUBST(Catalog)
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compress_nm=`basename $CompressCmd`
if test x"$compress_nm" = xgzip; then
  CompressCmd="$CompressCmd -d"
  CompressSuffix="gz"
else
  CompressSuffix="Z"
fi
AC_SUBST(CompressCmd)
AC_SUBST(CompressSuffix)
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dnl ** check for installed happy binary + version
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dnl    (don't do it if we're booting from .hc files though.)
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if test "$BootingFromHc" = "NO"; then
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FPTOOLS_HAPPY
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fi;
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dnl --------------------------------------------------
dnl ### program checking section ends here ###
dnl --------------------------------------------------
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dnl --------------------------------------------------
dnl * Platform header file and syscall feature tests
dnl ### checking the state of the local header files and syscalls ###
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dnl ** check for full ANSI header (.h) files
AC_HEADER_STDC
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dnl ** check for specific header (.h) files that we are interested in
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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 malloc.h memory.h nlist.h pascal.h pwd.h sgtty.h siginfo.h signal.h stat.h stdint.h stdlib.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)
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AC_CHECK_HEADER(readline/readline.h, HaveReadlineReadlineH=YES, HaveReadlineReadlineH=NO)
AC_CHECK_HEADER(readline/history.h, HaveReadlineHistoryH=YES, HaveReadlineHistoryH=NO)

if test $HaveReadlineReadlineH = YES && test $HaveReadlineHistoryH = YES ; then
  HaveReadlineHeaders=YES
  AC_DEFINE(HAVE_READLINE_HEADERS,1)
else
  HaveReadlineHeaders=NO
  AC_DEFINE(HAVE_READLINE_HEADERS,0)
fi
AC_SUBST(HaveReadlineHeaders)
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dnl ** check for DOS include files
AC_CHECK_HEADERS(dos.h conio.h io.h std.h) 

dnl ** check for Windows include files
AC_CHECK_HEADERS(windows.h)
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dnl ** check for OpenGL include files
AC_CHECK_HEADERS(GL/gl.h)
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dnl ** check if it is safe to include both <time.h> and <sys/time.h>
AC_HEADER_TIME
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dnl dynamic loading include files
AC_CHECK_HEADERS(dlfcn.h dl.h) 

dnl ** check for farcalloc (in bcc)
AC_CHECK_HEADER(alloc.h,AC_CHECK_FUNCS(farcalloc))

dnl ** check for valloc (in sunos, solaris, mips, amiga, next, minix, ultrix)
AC_CHECK_HEADER(malloc.h,AC_CHECK_FUNCS(valloc))

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dnl ** how do we get a timezone name, and UTC offset ?
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AC_STRUCT_TIMEZONE
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dnl ** what's the type of timezone?
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FPTOOLS_HAVE_TIMEZONE
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FPTOOLS_TYPE_TIMEZONE
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dnl ** do we have altzone?
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FPTOOLS_ALTZONE
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dnl ** does struct stat contain st_blksize?
AC_STRUCT_ST_BLKSIZE

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dnl ** do we have long longs?
FPTOOLS_C_LONG_LONG

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dnl ** what are the sizes of various types
dnl    (these must come before GHC_CHECK_ALIGNMENT)
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AC_CHECK_SIZEOF(char,               1)
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AC_CHECK_SIZEOF(double,             8)
AC_CHECK_SIZEOF(float,              4)
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AC_CHECK_SIZEOF(int,                4)
AC_CHECK_SIZEOF(long,               4)
if test "$fptools_cv_have_long_long" = yes; then
AC_CHECK_SIZEOF(long long,          8)
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fi
AC_CHECK_SIZEOF(short,              2)
AC_CHECK_SIZEOF(unsigned char,      1)
AC_CHECK_SIZEOF(unsigned int,       4)
AC_CHECK_SIZEOF(unsigned long,      4)
if test "$fptools_cv_have_long_long" = yes; then
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AC_CHECK_SIZEOF(unsigned long long, 8)
fi
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AC_CHECK_SIZEOF(unsigned short,     2)
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AC_CHECK_SIZEOF(void *,             4)
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dnl ** what are alignment constraints on various types
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FPTOOLS_CHECK_ALIGNMENT(char)
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FPTOOLS_CHECK_ALIGNMENT(double)
FPTOOLS_CHECK_ALIGNMENT(float)
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FPTOOLS_CHECK_ALIGNMENT(int)
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FPTOOLS_CHECK_ALIGNMENT(long)
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if test "$fptools_cv_have_long_long" = yes; then
FPTOOLS_CHECK_ALIGNMENT(long long)
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fi
FPTOOLS_CHECK_ALIGNMENT(short)
FPTOOLS_CHECK_ALIGNMENT(unsigned char)
FPTOOLS_CHECK_ALIGNMENT(unsigned int)
FPTOOLS_CHECK_ALIGNMENT(unsigned long)
if test "$fptools_cv_have_long_long" = yes; then
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FPTOOLS_CHECK_ALIGNMENT(unsigned long long)
fi
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FPTOOLS_CHECK_ALIGNMENT(unsigned short)
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FPTOOLS_CHECK_ALIGNMENT(void *)
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dnl ** map standard C types and ISO types to Haskell types
FPTOOLS_CHECK_HTYPE(char)
FPTOOLS_CHECK_HTYPE(signed char)
FPTOOLS_CHECK_HTYPE(unsigned char)
FPTOOLS_CHECK_HTYPE(short)
FPTOOLS_CHECK_HTYPE(unsigned short)
FPTOOLS_CHECK_HTYPE(int)
FPTOOLS_CHECK_HTYPE(unsigned int)
FPTOOLS_CHECK_HTYPE(long)
FPTOOLS_CHECK_HTYPE(unsigned long)
if test "$fptools_cv_have_long_long" = yes; then
FPTOOLS_CHECK_HTYPE(long long)
FPTOOLS_CHECK_HTYPE(unsigned long long)
fi
FPTOOLS_CHECK_HTYPE(float)
FPTOOLS_CHECK_HTYPE(double)
FPTOOLS_CHECK_HTYPE(ptrdiff_t)
FPTOOLS_CHECK_HTYPE(size_t)
FPTOOLS_CHECK_HTYPE(wchar_t)
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FPTOOLS_CHECK_HTYPE(sig_atomic_t, Int32)
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FPTOOLS_CHECK_HTYPE(clock_t)
FPTOOLS_CHECK_HTYPE(time_t)

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dnl ** Map OpenGL data types to Haskell types
if test $GhcLibsWithHOpenGL = YES ; then
FPTOOLS_CHECK_HTYPE(GLboolean)
FPTOOLS_CHECK_HTYPE(GLbyte)
FPTOOLS_CHECK_HTYPE(GLubyte)
FPTOOLS_CHECK_HTYPE(GLshort)
FPTOOLS_CHECK_HTYPE(GLushort)
FPTOOLS_CHECK_HTYPE(GLint)
FPTOOLS_CHECK_HTYPE(GLuint)
FPTOOLS_CHECK_HTYPE(GLsizei)
FPTOOLS_CHECK_HTYPE(GLenum)
FPTOOLS_CHECK_HTYPE(GLbitfield)
FPTOOLS_CHECK_HTYPE(GLfloat)
FPTOOLS_CHECK_HTYPE(GLclampf)
FPTOOLS_CHECK_HTYPE(GLdouble)
FPTOOLS_CHECK_HTYPE(GLclampd)
fi

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FPTOOLS_CHECK_CCONSTS(E2BIG EACCES EADDRINUSE EADDRNOTAVAIL EADV EAFNOSUPPORT EAGAIN EALREADY EBADF EBADMSG EBADRPC EBUSY ECHILD ECOMM ECONNABORTED ECONNREFUSED ECONNRESET EDEADLK EDESTADDRREQ EDIRTY EDOM EDQUOT EEXIST EFAULT EFBIG EFTYPE EHOSTDOWN EHOSTUNREACH EIDRM EILSEQ EINPROGRESS EINTR EINVAL EIO EISCONN EISDIR ELOOP EMFILE EMLINK EMSGSIZE EMULTIHOP ENAMETOOLONG ENETDOWN ENETRESET ENETUNREACH ENFILE ENOBUFS ENODATA ENODEV ENOENT ENOEXEC ENOLCK ENOLINK ENOMEM ENOMSG ENONET ENOPROTOOPT ENOSPC ENOSR ENOSTR ENOSYS ENOTBLK ENOTCONN ENOTDIR ENOTEMPTY ENOTSOCK ENOTTY ENXIO EOPNOTSUPP EPERM EPFNOSUPPORT EPIPE EPROCLIM EPROCUNAVAIL EPROGMISMATCH EPROGUNAVAIL EPROTO EPROTONOSUPPORT EPROTOTYPE ERANGE EREMCHG EREMOTE EROFS ERPCMISMATCH ERREMOTE ESHUTDOWN ESOCKTNOSUPPORT ESPIPE ESRCH ESRMNT ESTALE ETIME ETIMEDOUT ETOOMANYREFS ETXTBSY EUSERS EWOULDBLOCK EXDEV)

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dnl ** can we open files in binary mode?
FPTOOLS_O_BINARY

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dnl ** check for GetModuleFileName and WinExec (windows only)
dnl Old: AC_CHECK_FUNCS(WinExec GetModuleFileName)       dnl Windows
dnl Doesn't work because the linker can't see the functions if
dnl you omit the #include <windows.h>.  (I've no idea why not...)

FPTOOLS_TRY_LINK_NOWARN(,[
#if HAVE_WINDOWS_H
#include <windows.h>
#endif
main() { 
  WinExec("",0);
  exit(0);
}
],
[have_winexec=1],
[have_winexec=0])
if test "$have_winexec" = "1"; then
AC_DEFINE(HAVE_WINEXEC)
fi

FPTOOLS_TRY_LINK_NOWARN(,[
#if HAVE_WINDOWS_H
#include <windows.h>
#endif
main() { 
  char* dir;
  GetModuleFileName((HMODULE)0,dir,0);
  exit(0);
}
],
[have_getmodulefilename=1],
[have_getmodulefilename=0])
if test "$have_getmodulefilename" = "1"; then
AC_DEFINE(HAVE_GETMODULEFILENAME)
fi

dnl ** check return type of signal handlers
dnl Foo: assumes we can use prototypes.
dnl On BCC, signal handlers have type "int(void)", elsewhere its "void(int)".
dnl AC_CACHE_CHECK([type of signal handlers], ac_cv_type_signal_handler,
dnl [AC_TRY_COMPILE([#include <sys/types.h>
dnl #include <signal.h>
dnl #ifdef signal
dnl #undef signal
dnl #endif
dnl void (*signal (int, void (*)(int)))(int);
dnl ],
dnl [int i;], 
dnl ac_cv_type_signal_handler=void_int,
dnl ac_cv_type_signal_handler=int_void)])
dnl if test "$ac_cv_type_signal_handler" = void_int; then
dnl AC_DEFINE(VOID_INT_SIGNALS)
dnl fi

dnl On BCC, signal handlers have type "int(void)", elsewhere its "void(int)".
AC_TYPE_SIGNAL
if test "$ac_cv_type_signal" = void; then
AC_DEFINE(VOID_INT_SIGNALS)
fi

dnl ** check for more functions
AC_CHECK_FUNCS(strcasecmp _stricmp stricmp strcmpi)
AC_CHECK_FUNCS(strcmp)
AC_CHECK_FUNCS(realpath _fullpath)  
AC_CHECK_FUNCS(PBHSetVolSync macsystem)  
AC_CHECK_FUNCS(fgetpos fsetpos fseek ftell)
AC_CHECK_FUNCS(vsnprintf _vsnprintf)
AC_CHECK_FUNCS(snprintf  _snprintf )  
AC_CHECK_FUNCS(popen     _popen )  
AC_CHECK_FUNCS(pclose    _pclose )  


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dnl ** check for specific library functions that we are interested in
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AC_CHECK_FUNCS(access ftime getclock getpagesize getrusage gettimeofday mktime mprotect readlink setitimer stat symlink sysconf timelocal times vadvise vfork localtime_r gmtime_r)
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dnl ** check whether this machine has gmp3 installed
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AC_CHECK_LIB(gmp,  __gmpz_fdiv_qr, HaveLibGmp=YES; LibGmp=gmp,
  AC_CHECK_LIB(gmp3, __gmpz_fdiv_qr,  HaveLibGmp=YES; LibGmp=gmp3,
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AC_SUBST(LibGmp)
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dnl ** check whether this machine has GNU regex in libc.
FPTOOLS_REGEX_IN_LIBC

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dnl ** check whether this machine has BFD and liberty installed (used for debugging)
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dnl    the order of these tests matters: bfd needs liberty
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AC_CHECK_LIB(iberty, xmalloc)
AC_CHECK_LIB(bfd,    bfd_init)
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dnl ** check for readline, for Hugs and hslibs' Readline
dnl ncurses supersedes termcap and curses, but for compatibility,
dnl we have to check for all...
AC_CHECK_LIB(ncurses, tputs, HaveLibTermcap=YES; LibTermcap=ncurses,
  AC_CHECK_LIB(termcap, tputs, HaveLibTermcap=YES; LibTermcap=termcap,
    AC_CHECK_LIB(curses, tputs, HaveLibTermcap=YES; LibTermcap=curses,
      HaveLibTermcap=NO; LibTermcap=not-installed)))

if test $HaveLibTermcap = YES ; then
  LIBS="-l$LibTermcap $LIBS"
  AC_CHECK_LIB(readline, readline, HaveLibReadline=YES, HaveLibReadline=NO)
fi
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else
  AC_DEFINE(HAVE_READLINE_LIBS,0)
  LibsReadline=
fi
AC_SUBST(LibsReadline)
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if test "$HaveLibReadline"; then
  AC_CHECK_LIB(readline, rl_erase_empty_line,
    [AC_DEFINE(HAVE_READLINE_4, 1)],
    [AC_DEFINE(HAVE_READLINE_4, 0)])
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  AC_CHECK_LIB(readline, rl_free_undo_list,
    [AC_DEFINE(HAVE_READLINE_4_2, 1)],
    [AC_DEFINE(HAVE_READLINE_4_2, 0)])
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  AC_DEFINE(HAVE_READLINE_4, 0)
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  AC_DEFINE(HAVE_READLINE_4_2, 0)
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fi

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dnl ** check for math library
FPTOOLS_CHECK_LIBM()
AC_SUBST(LIBM)

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case $HostOS_CPP in
cygwin32) ;;
mingw32)  ;;
*) AC_PATH_XTRA() ;;
esac

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dnl ################################################################
dnl Check for libraries
dnl ################################################################

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AC_CHECK_LIB(dl, dlopen, 
	[HaveLibDL=YES
	 AC_DEFINE(HAVE_LIBDL)
	 LIBS="$LIBS -ldl"], 
	[HaveLibDL=NO])
AC_CHECK_FUNCS(dlopen)
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AC_SUBST(HaveLibDL)

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FPTOOLS_CHECK_LIB_NOWARN(m, atan)
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dnl --------------------------------------------------
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dnl * test for GTK+
dnl --------------------------------------------------

AC_PATH_PROGS(GTK_CONFIG, gtk-config gtk12-config)
if test "$GTK_CONFIG" != ""; then
   AC_CACHE_CHECK([for version of GTK+], fptools_cv_gtk_version, [
	fptools_cv_gtk_version=`$GTK_CONFIG --version`
    ])
    GTK_VERSION=$fptools_cv_gtk_version
else
    GTK_VERSION=
fi

case $fptools_cv_gtk_version in
  1.[[23]].*) ;;
  *) AC_MSG_WARN([GTK+ not usable; need at least version 1.2])
     GTK_CONFIG=
     ;;
esac

AC_SUBST(GTK_CONFIG)
AC_SUBST(GTK_VERSION)

dnl --------------------------------------------------
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dnl * Miscellaneous feature tests
dnl --------------------------------------------------

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dnl ** can we get alloca?
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AC_FUNC_ALLOCA
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dnl ** determine whether or not const works
AC_C_CONST
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dnl ** determine whether ANSI-function prototypes work?
AC_C_PROTOTYPES          

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dnl ** are we big endian?
AC_C_BIGENDIAN
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# Allay users' general fear of warnings of any kind.
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errprint(fptools configure script wizard sez: autoconf-2.50 or later should produce no warnings
)
errprint(if you are using 2.13 or earlier, you may get a (harmless) warning message.
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)
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dnl ** check for leading underscores in symbol names
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FPTOOLS_UNDERSCORE
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dnl ** how is the end of text section signalled?
FPTOOLS_END_TEXT_SECTION

dnl ** how is the end of data section signalled?
FPTOOLS_END_DATA_SECTION

dnl ** code before data?
FPTOOLS_CODE_BEFORE_DATA

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AC_OUTPUT(mk/config.mk, echo timestamp > mk/stamp-h )