dnl Process this file with autoconf to produce a configure script.
AC_INIT(Include/gifplot.h)
AC_PREREQ(2.0)

# Set name for machine-dependent library files
AC_SUBST(MACHDEP)
AC_MSG_CHECKING(MACHDEP)
if test -z "$MACHDEP"
then
	if test -f /usr/lib/NextStep/software_version; then
		set X `hostinfo | grep 'NeXT Mach.*:' | \
			sed -e 's/://' -e 's/\./_/'` && \
		ac_sys_system=next && ac_sys_release=$4
		MACHDEP="$ac_sys_system$ac_sys_release$ac_sys_cpu"
	else
		ac_sys_system=`uname -s`
		if test "$ac_sys_system" = "AIX" ; then
			ac_sys_release=`uname -v`
		else
			ac_sys_release=`uname -r`
		fi
		ac_md_system=`echo $ac_sys_system |
				   tr -d '[/ ]' | tr '[[A-Z]]' '[[a-z]]'`
		ac_md_release=`echo $ac_sys_release |
				   tr -d '[/ ]' | sed 's/\..*//'`
		MACHDEP="$ac_md_system$ac_md_release"
	fi
	case MACHDEP in
	'')	MACHDEP=unknown;;
	esac
fi
AC_MSG_RESULT($MACHDEP)

AC_LANG_C

dnl Checks for programs.
AC_PROG_CC
AC_PROG_RANLIB
AC_SUBST(AR)
AC_CHECK_PROGS(AR, ar aal, ar)

dnl Checks for header files.
AC_HEADER_STDC
dnl Checks for library functions.

# This borrowed from the Python configuration file
# Set info about shared libraries.

AC_SUBST(SO)
AC_SUBST(LDSHARED)
AC_SUBST(CCSHARED)
AC_SUBST(LINKFORSHARED)
# SO is the extension of shared libraries `(including the dot!)
# -- usually .so, .sl on HP-UX
AC_MSG_CHECKING(SO)
if test -z "$SO"
then
	case $ac_sys_system in
	hp*|HP*) SO=.sl;;
	NeXT|next) SO=.a;; # no shared libs on NeXT 3.3 and less
	*)	SO=.so;;
	esac
fi
AC_MSG_RESULT($SO)
# LDSHARED is the ld *command* used to create shared library
# -- "ld" on SunOS 4.x.x, "ld -G" on SunOS 5.x, "ld -shared" on IRIX 5
AC_MSG_CHECKING(LDSHARED)
if test -z "$LDSHARED"
then
	case $ac_sys_system/$ac_sys_release in
	AIX*) LDSHARED="ld_so_aix";;
	IRIX*) LDSHARED="ld -shared";;
	SunOS/4*) LDSHARED="ld";;
	SunOS/5*) LDSHARED="ld -G";;
	hp*|HP*) LDSHARED="ld -b";;
	OSF*) LDSHARED="ld -shared -expect_unresolved \"*\"";;
	DYNIX/ptx*) LDSHARED="ld -G";;
	Linux*) LDSHARED="gcc -shared";;
	FreeBSD*) LDSHARED="ld -Bshareable";;
	NeXT|next/3*) LDSHARED="ld -u libsys_s";;
	*)	LDSHARED="ld";;
	esac
fi
AC_MSG_RESULT($LDSHARED)
# CCSHARED are the C *flags* used to create objects to go into a shared
# library -- this is only needed for a few systems
AC_MSG_CHECKING(CCSHARED)
if test -z "$CCSHARED"
then
	case $ac_sys_system in
	hp*|HP*) if test "$GCC" = yes;
		 then CCSHARED="-fpic";
		 else CCSHARED="+z";
		 fi;;
	Linux*) CCSHARED="-fpic";;
	FreeBSD*) CCSHARED="-fpic";;
	esac
fi
AC_MSG_RESULT($CCSHARED)

AC_OUTPUT(Makefile Lib/Makefile Examples/Makefile Python/Makefile Tcl/Makefile Perl/Makefile)