dnl Set various version strings - taken gratefully from the GTk sources

# Making releases:

# MICRO_VERSION += 1;

# INTERFACE_AGE += 1;

# BINARY_AGE += 1;

# if any functions have been added, set INTERFACE_AGE to 0.

# if backwards compatibility has been broken,

# set BINARY_AGE and INTERFACE_AGE to 0.

MAJOR_VERSION=2

MINOR_VERSION=0

MICRO_VERSION=6

INTERFACE_AGE=0

BINARY_AGE=6

VERSION=$MAJOR_VERSION.$MINOR_VERSION.$MICRO_VERSION

AC_SUBST(MAJOR_VERSION)

AC_SUBST(MINOR_VERSION)

AC_SUBST(MICRO_VERSION)

AC_SUBST(INTERFACE_AGE)

AC_SUBST(BINARY_AGE)

AC_SUBST(VERSION)

# libtool versioning

LT_INIT([win32-dll])

LT_RELEASE=$MAJOR_VERSION.$MINOR_VERSION

LT_CURRENT=`expr $MICRO_VERSION - $INTERFACE_AGE`

LT_REVISION=$INTERFACE_AGE

LT_AGE=`expr $BINARY_AGE - $INTERFACE_AGE`

AC_SUBST(LT_RELEASE)

AC_SUBST(LT_CURRENT)

AC_SUBST(LT_REVISION)

AC_SUBST(LT_AGE)

dnl Detect the canonical build and host environments

AC_CANONICAL_HOST

AC_PROG_MAKE_SET

if test -z "$host_alias"; then

hostaliaswindres=

else

hostaliaswindres="$host_alias-windres"

fi

AC_CHECK_PROGS(WINDRES, [windres $hostaliaswindres $host_os-windres])

*-*-beos*)

ac_default_prefix=/boot/develop/tools/gnupro

;;

else

# Look for the location of the tools and install there

ac_default_prefix=$BUILD_PREFIX

fi

if test x$WINDRES != x; then

use_version_rc=true

fi

*-*-darwin*)

AC_ARG_ENABLE([imageio], [AC_HELP_STRING([--enable-imageio], [use native Mac OS X frameworks for loading images [default=yes]])],

[], [enable_imageio=yes])

dnl Show a message when we use ImageIO support so it's not a surprise

AC_MSG_CHECKING([for ImageIO support])

AC_MSG_RESULT($enable_imageio)

else

CFLAGS="$CFLAGS -DSDL_IMAGE_USE_COMMON_BACKEND"

fi

;;

dnl set this to use on systems that use lib64 instead of lib

base_libdir=`echo \${libdir} | sed 's/.*\/\(.*\)/\1/; q'`

dnl Function to find a library in the compiler search path

find_lib()

{

gcc_bin_path=[`$CC -print-search-dirs 2>/dev/null | fgrep programs: | sed 's/[^=]*=\(.*\)/\1/' | sed 's/:/ /g'`]

gcc_lib_path=[`$CC -print-search-dirs 2>/dev/null | fgrep libraries: | sed 's/[^=]*=\(.*\)/\1/' | sed 's/:/ /g'`]

env_lib_path=[`echo $LIBS $LDFLAGS $* | sed 's/-L[ ]*//g'`]

if test "$cross_compiling" = yes; then

host_lib_path=""

else

host_lib_path="/usr/$base_libdir /usr/local/$base_libdir"

fi

if test x$lib != x; then

echo $lib

return

fi

done

}

[], [enable_bmp=yes])

AC_ARG_ENABLE([gif], [AC_HELP_STRING([--enable-gif], [support loading GIF images [default=yes]])],

[], [enable_gif=yes])

AC_ARG_ENABLE([jpg], [AC_HELP_STRING([--enable-jpg], [support loading JPG images [default=yes]])],

[], [enable_jpg=yes])

AC_ARG_ENABLE([jpg-shared], AC_HELP_STRING([--enable-jpg-shared], [dynamically load JPG support [[default=yes]]]),

[], [enable_jpg_shared=yes])

AC_ARG_ENABLE([lbm], [AC_HELP_STRING([--enable-lbm], [support loading LBM images [default=yes]])],

[], [enable_lbm=yes])

AC_ARG_ENABLE([pcx], [AC_HELP_STRING([--enable-pcx], [support loading PCX images [default=yes]])],

[], [enable_pcx=yes])

AC_ARG_ENABLE([png-shared], AC_HELP_STRING([--enable-png-shared], [dynamically load PNG support [[default=yes]]]),

[], [enable_png_shared=yes])

AC_ARG_ENABLE([pnm], [AC_HELP_STRING([--enable-pnm], [support loading PNM images [default=yes]])],

[], [enable_pnm=yes])

AC_ARG_ENABLE([svg], [AC_HELP_STRING([--enable-svg], [support loading SVG images [default=yes]])],

[], [enable_svg=yes])

AC_ARG_ENABLE([tga], [AC_HELP_STRING([--enable-tga], [support loading TGA images [default=yes]])],

[], [enable_tga=yes])

AC_ARG_ENABLE([tif], [AC_HELP_STRING([--enable-tif], [support loading TIFF images [default=yes]])],

[], [enable_tif=yes])

AC_ARG_ENABLE([tif-shared], AC_HELP_STRING([--enable-tif-shared], [dynamically load TIFF support [[default=yes]]]),

[], [enable_tif_shared=yes])

AC_ARG_ENABLE([xcf], [AC_HELP_STRING([--enable-xcf], [support loading XCF images [default=yes]])],

[], [enable_xcf=yes])

AC_ARG_ENABLE([xpm], [AC_HELP_STRING([--enable-xpm], [support loading XPM images [default=yes]])],

[], [enable_xpm=yes])

AC_ARG_ENABLE([xv], [AC_HELP_STRING([--enable-xv], [support loading XV images [default=yes]])],

[], [enable_xv=yes])

AC_ARG_ENABLE([webp], [AC_HELP_STRING([--enable-webp], [support loading WEBP images [default=yes]])],

[], [enable_webp=yes])

AC_ARG_ENABLE([webpdec], [AC_HELP_STRING([--enable-webpdec], [support loading WEBP images via libwebpdecoder instead of libwebp [default=no]])],

[], [enable_webpdec=no])

AC_ARG_ENABLE([webp-shared], AC_HELP_STRING([--enable-webp-shared], [dynamically load WEBP support [[default=yes]]]),

[], [enable_webp_shared=yes])

AC_CHECK_HEADER([jpeglib.h], [have_jpg_hdr=yes])

AC_CHECK_LIB([jpeg], [jpeg_CreateDecompress], [have_jpg_lib=yes])

if test x$have_jpg_hdr = xyes -a x$have_jpg_lib = xyes; then

fi

LIBS="-ljpeg $LIBS"

case "$host" in

;;

*-*-cygwin* | *-*-mingw32*)

;;

*)

;;

esac

elif test x$enable_jpg = xyes; then

AC_MSG_WARN([*** Unable to find JPEG library (http://www.ijg.org/)])

AC_MSG_WARN([JPG image loading disabled])

fi

fi

PKG_CHECK_MODULES([LIBPNG], [libpng], [dnl

have_png_hdr=yes

have_png_lib=yes

], [dnl

AC_CHECK_HEADER([png.h], [

have_png_hdr=yes

LIBPNG_CFLAGS=""

])

AC_CHECK_LIB([png], [png_create_read_struct], [

have_png_lib=yes

LIBPNG_LIBS="-lpng -lz"

], [], [-lz])

])

if test x$have_png_hdr = xyes -a x$have_png_lib = xyes; then

AC_DEFINE([LOAD_PNG])

case "$host" in

*-*-darwin*)

png_lib=[`find_lib libpng.dylib`]

;;

*-*-cygwin* | *-*-mingw32*)

png_lib=[`find_lib "libpng*.dll"`]

;;

*)

png_lib=[`find_lib "libpng[0-9]*.so.*"`]

if test x$png_lib = x; then

png_lib=[`find_lib "libpng.so.*"`]

fi

;;

esac

else

AC_MSG_WARN([*** Unable to find PNG library (http://www.libpng.org/pub/png/libpng.html)])

AC_MSG_WARN([PNG image loading disabled])

fi

case "$host" in

;;

*-*-cygwin* | *-*-mingw32*)

;;

*)

;;

esac

AC_MSG_WARN([TIF image loading disabled])

fi

fi

if test x$enable_webpdec = xyes; then

webplib=webpdecoder

else

webplib=webp

fi

have_webp_hdr=yes

have_webp_lib=yes

], [dnl

AC_CHECK_HEADER([webp/decode.h], [

have_webp_hdr=yes

LIBWEBP_CFLAGS=""

])

])

if test x$have_webp_hdr = xyes -a x$have_webp_lib = xyes; then

AC_DEFINE([LOAD_WEBP])

case "$host" in

*-*-darwin*)

;;

*-*-cygwin* | *-*-mingw32*)

;;

*)

fi

;;

esac

else

AC_MSG_WARN([*** Unable to find WEBP library (http://code.google.com/intl/en-US/speed/webp/index.html)])

AC_MSG_WARN([WEBP Pimage loading disabled])

fi

fi

if test x$enable_bmp = xyes; then

AC_DEFINE([LOAD_BMP])

fi

if test x$enable_gif = xyes; then

AC_DEFINE([LOAD_GIF])

fi

if test x$enable_lbm = xyes; then

AC_DEFINE([LOAD_LBM])

fi

if test x$enable_pcx = xyes; then

AC_DEFINE([LOAD_PCX])

fi

if test x$enable_pnm = xyes; then

AC_DEFINE([LOAD_PNM])

fi

if test x$enable_svg = xyes; then

AC_DEFINE([LOAD_SVG])

fi

if test x$enable_tga = xyes; then

AC_DEFINE([LOAD_TGA])

fi

if test x$enable_webp_shared = xyes && test x$webp_lib != x; then

echo "-- dynamic libwebp -> $webp_lib"

AC_DEFINE_UNQUOTED(LOAD_WEBP_DYNAMIC, "$webp_lib")

else

fi

fi

if test x$enable_tif_shared = xyes && test x$tif_lib != x; then

echo "-- dynamic libtiff -> $tif_lib"

AC_DEFINE_UNQUOTED(LOAD_TIF_DYNAMIC, "$tif_lib")

else

if test x$have_libjpeg = xyes; then

# Disable dynamic jpeg since we're linking it explicitly

jpg_lib=''

fi

fi

fi

if test x$enable_jpg_shared = xyes && test x$jpg_lib != x; then

echo "-- dynamic libjpeg -> $jpg_lib"

AC_DEFINE_UNQUOTED(LOAD_JPG_DYNAMIC, "$jpg_lib")

else

IMG_LIBS="-ljpeg $IMG_LIBS"

fi

fi

if test x$enable_png = xyes -a x$have_png_hdr = xyes -a x$have_png_lib = xyes; then

CFLAGS="$LIBPNG_CFLAGS $CFLAGS"

if test x$enable_png_shared = xyes && test x$png_lib != x; then

echo "-- dynamic libpng -> $png_lib"

AC_DEFINE_UNQUOTED(LOAD_PNG_DYNAMIC, "$png_lib")

else

IMG_LIBS="$LIBPNG_LIBS $IMG_LIBS"

fi

fi

dnl Check for SDL

SDL_VERSION=2.0.8

AC_SUBST(SDL_VERSION)

AM_PATH_SDL2($SDL_VERSION,

:,

AC_MSG_ERROR([*** SDL version $SDL_VERSION not found!])

)

CFLAGS="$CFLAGS $SDL_CFLAGS"

LIBS="$LIBS $SDL_LIBS"

AC_SUBST([WINDRES])

AC_SUBST([IMG_LIBS])

OBJCFLAGS=$CFLAGS

# Finally create all the generated files

AC_OUTPUT([

Makefile

SDL2_image.spec

SDL2_image.pc