dnl == autoconf source for the Glasgow FP tools ==
dnl (grep for '^dnl' to see the outline of this file)
dnl
dnl * INITIAL SETUP, CHOICE OF PLATFORM(S)
#!/bin/sh
#
# (c) The AQUA Project, Glasgow University, 1994-1997
#
# Configure script for the Glasgow functional programming tools
# (created automagically by autoconf...do not edit by hand)
#
# Do "./configure --help" to see what flags are available.
# (Better yet, read the documentation!)
#
# First off, a distrib sanity check..
AC_INIT(mk/config.mk.in)

# -------------------------------------------------------------------------
# Prepare to generate the following header files
#
#
AC_CONFIG_HEADER(mk/config.h)

# No, we don't do `--srcdir'...
if test x"$srcdir" != 'x.' ; then
    echo "This configuration does not support the \`--srcdir' option.."
    exit 1
fi

#
# Remove some automounter nonsense (Glasgow specific gruff)
#
hardtop=`pwd`
hardtop=`echo $hardtop | sed 's|^/tmp_mnt.*\(/local/.*\)$|\1|' | sed 's|^/tmp_mnt/|/|' | sed 's|^/grasp_tmp|/local/grasp_tmp|'`

echo ''
echo "*** The top of your build tree is: $hardtop"
AC_SUBST(hardtop)

####--------------------------------------------------------------------
dnl ** choose host(/target/build) platform
#
# Guess host/target/build platform(s) if necessary.
#
AC_CANONICAL_SYSTEM

# "$host" defaults to "$target"
if test "x$host" = xNONE ; then
    host=$target
fi
# "$build" defaults to "$host"
#if test "x$build" = xNONE ; then
#    build=$host
#else
#    echo "This configuration does not support the \`--build' option."
#    exit 1
#fi

dnl ** canonicalize platform names
# Canonicali[sz]e those babies
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
#
# 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
alpha-dec-osf[[1234]]*)
	HostPlatform=alpha-dec-osf1   # canonicalise for our purposes
	TargetPlatform=alpha-dec-osf1 # this will work for now... (hack)
	BuildPlatform=alpha-dec-osf1  # hack
        HostPlatform_CPP='alpha_dec_osf1'
        HostArch_CPP='alpha'
        HostVendor_CPP='dec'
        HostOS_CPP='osf1'
        ;;
hppa1.1-hp-hpux*)
	HostPlatform=hppa1.1-hp-hpux  # canonicalise for our purposes (hack)
	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'
        ;;
i[[3456]]86-*-linuxaout*)
	HostPlatform=i386-unknown-linuxaout   # hack again
	TargetPlatform=i386-unknown-linuxaout
	BuildPlatform=i386-unknown-linuxaout
        HostPlatform_CPP='i386_unknown_linuxaout'
        HostArch_CPP='i386'
        HostVendor_CPP='unknown'
        HostOS_CPP='linuxaout'
        ;;
i[[3456]]86-*-linux*)
	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'
        ;;
i[[3456]]86-*-freebsd*)
	HostPlatform=i386-unknown-freebsd # hack again
	TargetPlatform=i386-unknown-freebsd
	BuildPlatform=i386-unknown-freebsd
        HostPlatform_CPP='i386_unknown_freebsd'
        HostArch_CPP='i386'
        HostVendor_CPP='unknown'
        HostOS_CPP='freebsd'
        ;;
i[[3456]]86-*-netbsd*)
	HostPlatform=i386-unknown-netbsd # hack again
	TargetPlatform=i386-unknown-netbsd
	BuildPlatform=i386-unknown-netbsd
        HostPlatform_CPP='i386_unknown_netbsd'
        HostArch_CPP='i386'
        HostVendor_CPP='unknown'
        HostOS_CPP='netbsd'
        ;;
i[[3456]]86-*-solaris2*)
	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'
        ;;
i[[3456]]86-*-cygwin32*)
	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'
        ;;
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'
        ;;
i[[3456]]86-next-nextstep3)
	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'
        ;;
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'
        ;;
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'
        HostVendor_CPP='ibm'
        HostOS_CPP='aix'
        ;;
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
echo "Canonicalised to: $HostPlatform"
test  x"$HostPlatform" != x"$TargetPlatform" && echo "Target platform set to $TargetPlatform"
test  x"$BuildPlatform" != x"$HostPlatform"  && echo "Build platform set to $BuildPlatform"

BuildPlatform_CPP=$HostPlatform_CPP
TargetPlatform_CPP=$HostPlatform_CPP
BuildArch_CPP=$HostArch_CPP
TargetArch_CPP=$HostArch_CPP
BuildOS_CPP=$HostOS_CPP
HostOS_Full=$host_os
TargetOS_CPP=$HostOS_CPP
BuildVendor_CPP=$HostVendor_CPP
TargetVendor_CPP=$HostVendor_CPP

dnl Cannot afford all these SUBSTs (because of braindead seds w/ 99 cmd limits)
dnl AC_SUBST(BuildPlatform)

AC_SUBST(HostPlatform)
AC_SUBST(TargetPlatform)
AC_SUBST(HostPlatform_CPP)
dnl AC_SUBST(BuildPlatform_CPP)
dnl AC_SUBST(TargetPlatform_CPP)

AC_SUBST(HostArch_CPP)
dnl AC_SUBST(BuildArch_CPP)
dnl AC_SUBST(TargetArch_CPP)

AC_SUBST(HostOS_CPP)
AC_SUBST(HostOS_Full)
dnl AC_SUBST(BuildOS_CPP)
dnl AC_SUBST(TargetOS_CPP)

AC_SUBST(HostVendor_CPP)
dnl AC_SUBST(BuildVendor_CPP)
dnl AC_SUBST(TargetVendor_CPP)

####--------------------------------------------------------------------
dnl
dnl * _GENERAL_ CONFIGURATION CHECKS
#

#
dnl ** does #! work?
#
AC_SYS_INTERPRETER()
#
dnl ** look for `perl', but watch out for version 4.035
#
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
AC_CHECK_PERL_VERSION
fi

#
dnl ** does #!.../perl work? (sometimes it's too long...)
#
AC_SHEBANG_PERL

# Remove: we work around the problem in the single place
# where we rely on something (getopts) from the libraries.
#
#dnl ** check if perl library is properly installed
# 
# (by seeing if a "do 'getopts.pl'" works...
#if $PerlCmd -e 'do "getopts.pl" || exit(1); exit(0);' > /dev/null 2>&1 ; then
#    :
#else
#    echo "I think your perl library is misinstalled:"
#    echo "The following script did not work:"
#    echo '      do "getopts.pl" || exit(1); exit(0);'
#    echo 'But, anyway, we will continue in our quest..'
#fi
#

#
dnl ** look for GCC and find out which version
# Figure out which C compiler to use.  Gcc is preferred.
# If gcc, make sure it's at least 2.1
#
AC_PROG_CC
AC_HAVE_GCC

#
dnl ** figure out how to invoke cpp directly (gcc -E is no good)
#
AC_PROG_CPP
AC_PROG_GNUCPP

#
dnl ** figure out how to do context diffs
#
AC_PROG_DIFF

#
dnl ** look for a decent parser generator (bison preferred)
#
# (AC_PROG_YACCY is AC_PROG_YACC, but with some extra testing 
# on the suitability of the 'yacc' returned.)
AC_PROG_YACCY

#
dnl ** Find lex command (lex or flex) and library (-ll or -lfl)
#
AC_PROG_LEX

#
dnl ** figure out how to do a BSD-ish install
#
AC_PROG_INSTALL
#
dnl ** how to invoke `ar' and `ranlib'
#
AC_PROG_AR_AND_RANLIB

#
#
dnl ** Check to see whether ln -s works
#
AC_PROG_LN_S

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

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

#
dnl ** check for tar **
#
# if GNU tar is named gtar, look for it first.
#
AC_PATH_PROGS(TarCmd,gtar tar,tar)

#
dnl ** check for gzip/compress **
AC_PATH_PROGS(CompressCmd,gzip compress,gzip)

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)

#
dnl ** check for installed happy binary + version
#
AC_HAPPY

if test x"$HappyCmd" != x; then
   if expr $HappyVersion \< "1.3" >/dev/null; then
	echo "   Happy Version 1.3 or later is required to compile GHC."
	echo "   Using the Happy sources in the tree.";
	HappyCmd=""
   fi
fi

#
#
dnl ** check for installed lx binary
#
AC_PATH_PROG(LxCmd,lx)

#
dnl ** check for installed green-card binary
#
AC_PATH_PROG(GreencardCmd,green-card)

#### program checking section ends here ####

####--------------------------------------------------
#### checking the state of the local header files and syscalls ####

#
dnl ** check for full ANSI header (.h) files
#
AC_HEADER_STDC

#
dnl ** check for specific header (.h) files that we are interested in
#
AC_CHECK_HEADERS(dirent.h fcntl.h grp.h malloc.h memory.h nlist.h pwd.h siginfo.h signal.h stdlib.h string.h sys/fault.h sys/file.h sys/mman.h sys/param.h sys/procfs.h sys/resource.h sys/signal.h sys/socket.h sys/stat.h sys/syscall.h sys/time.h sys/timeb.h sys/timers.h sys/times.h sys/types.h sys/utsname.h sys/vadvise.h sys/wait.h termios.h time.h types.h unistd.h utime.h vfork.h readline/readline.h )

#
dnl ** check if it is safe to include both <time.h> and <sys/time.h>
#
AC_HEADER_TIME
#
dnl ** how do we get a timezone name, and UTC offset ?
#
AC_STRUCT_TIMEZONE

# 
dnl what's the type of timezone?
AC_TYPE_TIMEZONE

#
dnl do we have altzone?
AC_ALTZONE

#
dnl ** check for specific library functions that we are interested in
#
AC_CHECK_FUNCS(access ftime getclock getpagesize getrusage gettimeofday mktime mprotect setitimer stat sysconf timelocal times vadvise vfork)

#
# Misc
#
dnl ** can we get alloca?
AC_FUNC_ALLOCA
dnl ** determine whether or not const works
AC_C_CONST
dnl ** determine the type of signal()
AC_TYPE_SIGNAL

#
dnl ** check for leading underscores in symbol names
#
AC_UNDERSCORE

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

echo ''
echo '************************************************'
echo '*** NOW DO: gmake boot followed by gmake all'
echo '***         (where gmake == GNU make)'
echo '************************************************'
exit 0
