## configure.ac

AC_PREREQ([2.59])
AC_INIT([SolveSpace], [2.1], [jwesthues@cq.cx], [solvespace])
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_SRCDIR([src/solvespace.cpp])
AC_CONFIG_AUX_DIR([ac-aux])
AC_CONFIG_MACRO_DIR([m4])

AM_INIT_AUTOMAKE([1.9.6 -Wall -Werror foreign subdir-objects tar-ustar])
AM_MAINTAINER_MODE

AC_PROG_CC
AC_PROG_CXX
AM_PROG_AR

AC_PROG_INSTALL
dnl AC_PROG_MAKE_SET
AC_HEADER_STDC
AC_C_BIGENDIAN
AC_C_CONST
AC_C_INLINE

# Check for Libtool
#
dnl AC_DISABLE_SHARED
LT_INIT

# Do we have Perl?
#
AC_CHECK_PROG([PERL], [perl], [perl], [false])

# Check for headers that define integer types
#
AC_CHECK_HEADERS([inttypes.h stdint.h sys/socket.h])

# Check for various integer types
#
AC_TYPE_INT8_T
AC_TYPE_INT16_T
AC_TYPE_INT32_T
AC_TYPE_INT64_T
AC_TYPE_UINT8_T
AC_TYPE_UINT16_T
AC_TYPE_UINT32_T
AC_TYPE_UINT64_T
AC_TYPE_SSIZE_T
AC_DEFINE([HAVE_C99_INTEGER_TYPES], [1], [Define to 1 if (self-explanatory).])

# Check the size of various types
#
AC_CHECK_SIZEOF([char])
AC_CHECK_SIZEOF([short])
AC_CHECK_SIZEOF([int])
AC_CHECK_SIZEOF([long])
AC_CHECK_SIZEOF([float])
AC_CHECK_SIZEOF([double])
AC_CHECK_SIZEOF([long double])
AC_CHECK_SIZEOF([void *])
AC_CHECK_SIZEOF([size_t])

# Is the pre-built source directory present?
#
AM_CONDITIONAL([HAVE_PREBUILT_SOURCE], [test -d $srcdir/src/built])

##
## Windows support
##

AC_EXEEXT
AC_OBJEXT

win32=no
AC_EGREP_CPP([SOLVESPACE_WIN32],dnl
[#if (defined(_MSC_VER) && defined(_WIN32)) || defined(__MINGW32__)
SOLVESPACE_WIN32
#endif], [win32=yes])

AM_CONDITIONAL([WIN32], [test "$win32" = yes])

mingw=no
AC_EGREP_CPP([SOLVESPACE_MINGW],dnl
[#if defined(__MINGW32__)
SOLVESPACE_MINGW
#endif], [mingw=yes])

AM_CONDITIONAL([MINGW], [test "$mingw" = yes])

AH_VERBATIM([MSVC_FLAGS], [#if defined(_MSC_VER) && defined(_WIN32)
# define _CRT_SECURE_NO_DEPRECATE 1
# define _CRT_SECURE_NO_WARNINGS 1
# define _WIN32_WINNT 0x500
# define _WIN32_IE _WIN32_WINNT
# define ISOLATION_AWARE_ENABLED 1
# define WIN32 1
# define WIN32_LEAN_AND_MEAN 1
#endif])

AC_CHECK_LIB(
        [png], [png_set_sig_bytes], [],
        [AC_MSG_ERROR([Cannot find -lpng])])
AC_CHECK_HEADERS(
        [png.h], [],
        [AC_MSG_ERROR([Cannot find png.h])])

AC_CHECK_LIB(
        [GL], [glVertex2d], [],
        [AC_MSG_ERROR([Cannot find -lGL])])
AC_CHECK_HEADERS(
        [GL/gl.h], [],
        [AC_MSG_ERROR([Cannot find GL/gl.h])])

AC_CHECK_LIB(
        [GLU], [gluTessVertex], [],
        [AC_MSG_ERROR([Cannot find -lGLU])])
AC_CHECK_HEADERS(
        [GL/glu.h], [],
        [AC_MSG_ERROR([Cannot find GL/glu.h])])

##
## FLTK
##

AX_FLTK([1.3], [--use-gl --use-images --use-forms])
AM_CONDITIONAL([HAVE_FLTK], [test "$have_fltk" = yes])

if test "$have_fltk" = yes
then
	x=`echo "$FLTK_VERSION" | cut -d. -f1`
	y=`echo "$FLTK_VERSION" | cut -d. -f2`
	z=`echo "$FLTK_VERSION" | cut -d. -f3`

	if test `expr 10000 '*' $x + 100 '*' $y + $z` -ge 10301
	then
		AC_DEFINE([HAVE_FLTK_FULLSCREEN], [1],
			[Define to 1 if your copy of FLTK has proper fullscreen support.])
	fi
fi

##
## Libspnav
##

AC_ARG_WITH([libspnav],
	[AS_HELP_STRING([[--with-libspnav[=PRFX]]],
		[Enable SpaceNavigator (3D mouse) support via libspnav driver installed in PRFX])])

case "$with_libspnav" in
	no|'') want_libspnav=no ;;
	yes) want_libspnav=yes ;;
	*)
	want_libspnav=yes
	LIBSPNAV_CPPFLAGS="-I$with_libspnav/include"
	LIBSPNAV_LDFLAGS="-L$with_libspnav/lib"
	;;
esac

if test "$want_libspnav" = yes
then
	save_CPPFLAGS="$CPPFLAGS"
	save_LDFLAGS="$LDFLAGS"
	save_LIBS="$LIBS"

	CPPFLAGS="$LIBSPNAV_CPPFLAGS"
	LDFLAGS="$LIBSPNAV_LDFLAGS"
	LIBS="-lspnav"

	AC_MSG_CHECKING([for libspnav])

	AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <spnav.h>],
			[if (spnav_open() < 0) return 1 /* ; */])],
		[AC_MSG_RESULT([yes])
		 AC_DEFINE([HAVE_LIBSPNAV], [1], [Define to 1 if you have the SpaceNav driver.])
		 LIBSPNAV_LIBS="$LDFLAGS $LIBS"],
		[AC_MSG_ERROR([cannot find libspnav])])

	CPPFLAGS="$save_CPPFLAGS"
	LDFLAGS="$save_LDFLAGS"
	LIBS="$save_LIBS"
fi

AC_SUBST([LIBSPNAV_CPPFLAGS])
AC_SUBST([LIBSPNAV_LIBS])

##
## Wrap it up
##

AC_CONFIG_FILES([Makefile exposed/Makefile src/Makefile])
AC_OUTPUT

cat <<EOF

$PACKAGE-$VERSION configuration summary:

    Install prefix ......... : ${prefix}
    C++ preprocessor ....... : ${CXXCPP}
    C++ compiler ........... : ${CXX}
    Linker ................. : ${LD}
    C preprocessor flags ... : ${CPPFLAGS}
    C++ compiler flags ..... : ${CXXFLAGS}
    Linker flags ........... : ${LDFLAGS}
    Extra libraries ........ : ${LIBS}

EOF

## end configure.ac