dnl $Id: configure.in,v 1.44.2.4 2006/02/25 19:34:04 cegger Exp $
dnl Process this file with autoconf to produce a configure script.

AC_PREREQ(2.59)

dnl Should perhaps add the ggi-develop ML as the 3rd argument
dnl to AC_INIT but someone has to take care of the spam...
AC_INIT([libggigcp],[1.0.1],[http://www.ggi-project.org/contact.html])
AC_CONFIG_SRCDIR([include/ggi/gcp.h])
AC_CONFIG_MACRO_DIR(m4)

dnl Put the name and version of the package here
AM_INIT_AUTOMAKE([libggigcp],[1.0.1],[-])

AM_MAINTAINER_MODE


dnl ========================================================================
dnl Set some defaults

PATHTAG="pAtHTAg"
TAGLEN="7"
gcp_conffile="libggigcp.conf"
ggi_subdir="ggi"

use_debug="yes"

dnl Targets
dnl This extension will _never_ have display-targets


dnl ========================================================================
dnl Checks for programs.

AC_PROG_AWK  
AC_PROG_CC
AC_PROG_CPP
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET

LT_INIT([win32-dll])

dnl ========================================================================
dnl Generate libtool

LT_OUTPUT

dnl ========================================================================
dnl User selectable options


dnl Bah! autoconf hasn't set prefix to it's default value yet!
test "x$prefix" = xNONE && prefix=$ac_default_prefix
test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'


GGI_INST_PATH
GGI_UNINST_PATH

GII_UNINST_PATH

AC_ARG_ENABLE(debug,
[  --disable-debug         don't build with run-time debugging (speed freaks)],
use_debug=$enableval)

dnl TARGETS:


dnl Support the --with-extra-libs and --with-extra-includes command line
dnl options to 'configure'.
GGI_EXTRA_PATHS

dnl
dnl ========================================================================
dnl Checks for platform specificas

GGI_CHECK_STRING_FUNCS
GGI_CC_CHECK4_OPTION([pedantic])
GGI_CHECK_IMPLICIT_DECLARATIONS


dnl ========================================================================
dnl Checks for header files.

dnl Check for standard C headers
AC_HEADER_STDC

GGI_NEED_INTTYPES


dnl ========================================================================
dnl Checks for typedefs, structures, and compiler characteristics.

dnl Check if the compiler supports the 'const' keyword, otherwise define
dnl 'const' to empty.
AC_C_CONST
dnl Check if the compiler supports inlining. If it does define 'inline' to
dnl the apropriate keyword, otherwise define it to empty.
AC_C_INLINE

dnl Check for the extension of shared libraries (excluding the dot) and
dnl put it in the @DLLEXT@ Makefile variable.
GGI_DLLEXT


dnl ========================================================================
dnl Checks for library functions.


dnl ========================================================================
dnl LibGGI must be built

GGI_CHECKLIB([libggigcp])

dnl ========================================================================
dnl Checks for target-specific libraries and headers

DISPLAYSUBDIRS=""
DEFAULTSUBDIRS="color"
DISPLAYMODULES=""
DEFAULTMODULES=""

if test "$enable_shared" = "yes"; then
  DEFAULTMODULES="$DEFAULTMODULES color_gcp.la"
fi
if test "$enable_static" = "yes"; then
  AC_DEFINE(BUILTIN_DEFAULT, 1, [Support for builtin defaults])
fi
AM_CONDITIONAL(BUILTIN_DEFAULT,
		test "$enable_static" = "yes")


dnl ========================================================================
dnl Check for targets

dnl ========================================================================
dnl Finally add some flags

dnl _THREAD_SAFE is used instead of _REENTRANT on some systems
CFLAGS="$CFLAGS -D_REENTRANT -D_THREAD_SAFE"

if test "x$use_debug" = "xyes"; then
  CFLAGS="$CFLAGS -DDEBUG"
  if test "x$ac_cv_prog_cc_g" = "xyes"; then
    CFLAGS="$CFLAGS -g"
  fi
fi

if test "$ac_cv_c_compiler_gnu" = "yes"; then
    GGI_CC_CHECK4_OPTION([std=gnu99])

    # Common warning flags
    CFLAGS="$CFLAGS -Wall -Wpointer-arith -Wsign-compare"
    CFLAGS="$CFLAGS -Wstrict-prototypes -Wswitch"
    CFLAGS="$CFLAGS -Wmissing-prototypes -Wreturn-type -Wshadow"

    # Advanced warning flags
    CFLAGS="$CFLAGS -Wnested-externs -Wredundant-decls"
    CFLAGS="$CFLAGS -Wuninitialized -Wcast-qual -Wwrite-strings"
    if test "x$cc_has_werror_implicit_function_declaration" = "xyes"; then
      CFLAGS="$CFLAGS -Werror-implicit-function-declaration"
    fi

    # Buggy warning flag
    # CFLAGS="$CFLAGS -Wconversion"

    # Super advanced (only used for building releases)
    # CFLAGS="$CFLAGS -Werror"
fi


dnl ========================================================================
dnl Write output

AC_SUBST(DISPLAYSUBDIRS)
AC_SUBST(DEFAULTSUBDIRS)
AC_SUBST(DISPLAYMODULES)
AC_SUBST(DEFAULTMODULES)

dnl Use static_* to substitute into files where values shouldn't
dnl dynamicly change.  Makefiles need to be able to dynamicly change
dnl paths between build and install and shouldn't use these static_*.
dnl Files that will be installed must always show the final location where
dnl they will reside and should use these static_* values.
dnl Ensure that all static_* are fully expanded.

eval static_libdir="$libdir"
old_val=""
until test "$static_libdir" = "$old_val"; do
	old_val="$static_libdir"
	eval static_libdir="$static_libdir"
done

eval static_sysconfdir="$sysconfdir"
old_val=""
until test "$static_sysconfdir" = "$old_val"; do
      old_val="$static_sysconfdir"
      eval static_sysconfdir="$static_sysconfdir"
done

case "${host}" in
 *-*-mingw*)
	dnl Find a relative path that takes us from static_sysconfdir
	dnl to static_libdir.
	GGI_SYSCONF_TO_LIB
	dnl The relative path from sysconfdir to sysconfdir is simple.
	ggi_sysconfdir="."
	;;
 *)
	dnl Usually good to use an absolute path.
	ggi_sysconfdir_to_libdir="$static_libdir/$ggi_subdir"
	ggi_sysconfdir="$static_sysconfdir/$ggi_subdir"
	;;
esac

AC_SUBST(ggi_subdir)
AC_SUBST(ggi_sysconfdir_to_libdir)
AC_SUBST(ggi_sysconfdir)
AC_SUBST(static_libdir)
AC_SUBST(static_sysconfdir)
AC_DEFINE_UNQUOTED([GCPTAGLEN],$TAGLEN, [The length of the tag])
AC_DEFINE_UNQUOTED([GCPPATHTAG],"$PATHTAG", [Tag to identify path to $gcp_conffile])
AC_DEFINE_UNQUOTED([GCPCONFFILE],"$gcp_conffile", [Name of the gcp config file])
AC_DEFINE_UNQUOTED([GCPCONFDIR],"$PATHTAG$static_sysconfdir/$ggi_subdir",
			[Tag plus path to config dir])

AM_CONFIG_HEADER([config.h])

AC_CONFIG_FILES([Makefile
include/Makefile
include/ggi/Makefile
include/ggi/internal/Makefile
gcp/Makefile
default/Makefile
default/color/Makefile
default-shared/Makefile
demos/Makefile
doc/Makefile
doc/man/Makefile
m4/Makefile
libggigcp.conf
])
AC_OUTPUT