AC_INIT([libwebp], [0.2.1], [http://code.google.com/p/webp/issues],, [http://developers.google.com/speed/webp]) AC_CANONICAL_TARGET AM_INIT_AUTOMAKE([-Wall foreign subdir-objects]) AC_PROG_LIBTOOL AM_PROG_CC_C_O dnl === Enable less verbose output when building. dnl === If an older aclocal exits with an error comment these lines out. m4_define_default([AM_SILENT_RULES], []) AM_SILENT_RULES AC_ARG_WITH([pkgconfigdir], AS_HELP_STRING([--with-pkgconfigdir=DIR], [Path to the pkgconfig directory @<:@LIBDIR/pkgconfig@:>@]), [pkgconfigdir="$withval"], [pkgconfigdir='${libdir}/pkgconfig']) AC_SUBST([pkgconfigdir]) dnl === WITHLIB_OPTION([opt_pfx], [outvar_pfx]) dnl === Defines --with-{include,lib}dir options which set dnl === the variables _{INCLUDES,LIBS}. AC_DEFUN([WITHLIB_OPTION], [AC_ARG_WITH([$1includedir], AS_HELP_STRING([--with-$1includedir=DIR], [use $2 includes from DIR]), $2_INCLUDES="-I$withval") AC_ARG_WITH([$1libdir], AS_HELP_STRING([--with-$1libdir=DIR], [use $2 libraries from DIR]), [$2_LIBS="-L$withval"])]) dnl === Check for pthread support AC_ARG_ENABLE([threading], AS_HELP_STRING([--disable-threading], [Disable detection of thread support]),, [enable_threading=yes]) if test "$enable_threading" = "yes"; then AC_MSG_NOTICE([checking for threading support...]) AX_PTHREAD([AC_DEFINE([WEBP_USE_THREAD], [1], [Undefine this to disable thread support.]) LIBS="$PTHREAD_LIBS $LIBS" CFLAGS="$CFLAGS $PTHREAD_CFLAGS" CC="$PTHREAD_CC" ], [enable_threading=no]) fi AC_MSG_NOTICE([checking if threading is enabled... ${enable_threading-no}]) dnl === check for PNG support === PNG_INCLUDES="" PNG_LIBS="" AC_PATH_PROGS(LIBPNG_CONFIG, [libpng-config libpng15-config libpng14-config libpng12-config]) if test -n "$LIBPNG_CONFIG"; then PNG_INCLUDES=`$LIBPNG_CONFIG --cflags` PNG_PREFIX=`$LIBPNG_CONFIG --prefix` if test "${PNG_PREFIX}/lib" != "/usr/lib" ; then PNG_LIBS="-L${PNG_PREFIX}/lib" fi PNG_LIBS="$PNG_LIBS `$LIBPNG_CONFIG --libs`" fi WITHLIB_OPTION([png], [PNG]) SAVED_CPPFLAGS=$CPPFLAGS SAVED_LIBS=$LIBS CPPFLAGS="$PNG_INCLUDES $CPPFLAGS" LIBS="$PNG_LIBS $LIBS" AC_CHECK_HEADER(png.h, AC_SEARCH_LIBS(png_get_libpng_ver, [png], [test "$ac_cv_search_png_get_libpng_ver" = "none required" \ || PNG_LIBS="$PNG_LIBS $ac_cv_search_png_get_libpng_ver" PNG_INCLUDES="$PNG_INCLUDES -DWEBP_HAVE_PNG" AC_DEFINE(WEBP_HAVE_PNG, [1], [Set to 1 if PNG library is installed]) png_support=yes ], [AC_MSG_WARN(Optional png library not found) PNG_LIBS="" PNG_INCLUDES="" ], [$MATH_LIBS]), [AC_MSG_WARN(png library not available - no png.h) PNG_LIBS="" PNG_INCLUDES="" ], ) AC_SUBST(PNG_LIBS) AC_SUBST(PNG_INCLUDES) CPPFLAGS=$SAVED_CPPFLAGS LIBS=$SAVED_LIBS dnl === check for JPEG support === JPEG_INCLUDES="" JPEG_LIBS="" WITHLIB_OPTION([jpeg], [JPEG]) SAVED_CPPFLAGS=$CPPFLAGS SAVED_LIBS=$LIBS CPPFLAGS="$JPEG_INCLUDES $CPPFLAGS" LIBS="$JPEG_LIBS $LIBS" AC_CHECK_HEADER(jpeglib.h, AC_CHECK_LIB(jpeg, jpeg_set_defaults, [JPEG_LIBS="$JPEG_LIBS -ljpeg" JPEG_INCLUDES="$JPEG_INCLUDES -DWEBP_HAVE_JPEG" AC_DEFINE(WEBP_HAVE_JPEG, [1], [Set to 1 if JPEG library is installed]) jpeg_support=yes ], AC_MSG_WARN(Optional jpeg library not found), [$MATH_LIBS]), AC_MSG_WARN(jpeg library not available - no jpeglib.h) ) AC_SUBST(JPEG_LIBS) AC_SUBST(JPEG_INCLUDES) CPPFLAGS=$SAVED_CPPFLAGS LIBS=$SAVED_LIBS dnl === check for TIFF support === TIFF_INCLUDES="" TIFF_LIBS="" WITHLIB_OPTION([tiff], [TIFF]) SAVED_CPPFLAGS=$CPPFLAGS SAVED_LIBS=$LIBS CPPFLAGS="$TIFF_INCLUDES $CPPFLAGS" LIBS="$TIFF_LIBS $LIBS" AC_CHECK_HEADER(tiffio.h, AC_CHECK_LIB(tiff, TIFFGetVersion, [TIFF_LIBS="$TIFF_LIBS -ltiff" TIFF_INCLUDES="$TIFF_INCLUDES -DWEBP_HAVE_TIFF" AC_DEFINE(WEBP_HAVE_TIFF, [1], [Set to 1 if TIFF library is installed]) tiff_support=yes ], AC_MSG_WARN(Optional tiff library not found), [$MATH_LIBS]), AC_MSG_WARN(tiff library not available - no tiffio.h) ) AC_SUBST(TIFF_LIBS) AC_SUBST(TIFF_INCLUDES) CPPFLAGS=$SAVED_CPPFLAGS LIBS=$SAVED_LIBS dnl === check for GIF support === GIF_LIBS="" WITHLIB_OPTION([gif], [GIF]) SAVED_LIBS=$LIBS LIBS="$GIF_LIBS $LIBS" AC_CHECK_HEADER(gif_lib.h, AC_CHECK_LIB([gif], [DGifOpenFileHandle], [GIF_LIBS="$GIF_LIBS -lgif" gif_support=yes ], AC_MSG_WARN(Optional gif library not found), [$MATH_LIBS]), AC_MSG_WARN(gif library not available - no gif_lib.h) ) AC_SUBST(GIF_LIBS) CPPFLAGS=$SAVED_CPPFLAGS LIBS=$SAVED_LIBS if test "$gif_support" = "yes" -a \ "$enable_experimental_libwebpmux" = "yes"; then build_gif2webp=yes fi AM_CONDITIONAL([BUILD_GIF2WEBP], [test "${build_gif2webp}" = "yes"]) dnl === check for WIC support === if test "$target_os" = "mingw32"; then AC_CHECK_HEADERS([wincodec.h shlwapi.h windows.h]) if test "$ac_cv_header_wincodec_h" = "yes"; then AC_MSG_CHECKING(for Windows Imaging Component support) SAVED_LIBS=$LIBS LIBS="-lshlwapi -lole32 $LIBS" # match include structure from [cd]webp.c wic_headers=" #define INITGUID #define CINTERFACE #define COBJMACROS #define _WIN32_IE 0x500 #include #include #include " # test for functions from each lib and the GUID is created properly wic_main=" int main(void) { CLSID_WICImagingFactory; CoInitialize(NULL); SHCreateStreamOnFile(NULL, 0, NULL); return 0; } " AC_LANG_PUSH(C) AC_LINK_IFELSE( [AC_LANG_SOURCE([ $wic_headers $wic_main])], [wic_support=yes], [wic_support=no] ) AC_LANG_POP test "$wic_support" = "yes" || LIBS=$SAVED_LIBS AC_MSG_RESULT(${wic_support-no}) fi fi dnl === If --enable-experimental is defined, add -DWEBP_EXPERIMENTAL_FEATURES USE_EXPERIMENTAL_CODE="" AC_MSG_CHECKING(if --enable-experimental option is specified) AC_ARG_ENABLE([experimental], AS_HELP_STRING([--enable-experimental], [Activate experimental features])) if test "$enable_experimental" = "yes"; then AC_DEFINE(EXPERIMENTAL,,[Enable experimental code]) USE_EXPERIMENTAL_CODE="-DWEBP_EXPERIMENTAL_FEATURES" fi AC_MSG_RESULT(${enable_experimental-no}) AC_SUBST(USE_EXPERIMENTAL_CODE) dnl === Check whether libwebpmux should be built AC_MSG_CHECKING(whether libwebpmux is to be built) AC_ARG_ENABLE([experimental-libwebpmux], AS_HELP_STRING([--enable-experimental-libwebpmux], [Build libwebpmux @<:@default=no@:>@])) AC_MSG_RESULT(${enable_experimental_libwebpmux-no}) AM_CONDITIONAL([WANT_MUX], [test "$enable_experimental_libwebpmux" = "yes"]) dnl === Check whether libwebpdemux should be built AC_MSG_CHECKING(whether libwebpdemux is to be built) AC_ARG_ENABLE([experimental-libwebpdemux], AS_HELP_STRING([--enable-experimental-libwebpdemux], [Build libwebpdemux @<:@default=no@:>@])) AC_MSG_RESULT(${enable_experimental_libwebpdemux-no}) AM_CONDITIONAL([WANT_DEMUX], [test "$enable_experimental_libwebpdemux" = "yes"]) dnl ========================= AC_CONFIG_MACRO_DIR([m4]) AC_CONFIG_HEADERS([config.h]) AC_CONFIG_FILES([Makefile src/Makefile man/Makefile \ examples/Makefile src/dec/Makefile \ src/enc/Makefile src/dsp/Makefile \ src/demux/Makefile src/mux/Makefile \ src/utils/Makefile \ src/libwebp.pc]) AC_OUTPUT AC_MSG_NOTICE([ WebP Configuration Summary -------------------------- Shared libraries: ${enable_shared} Static libraries: ${enable_static} Threaded decode: ${enable_threading-no} libwebp: yes libwebpdemux: ${enable_experimental_libwebpdemux-no} libwebpmux: ${enable_experimental_libwebpmux-no} Tools: cwebp: yes Input format support ==================== JPEG : ${jpeg_support-no} PNG : ${png_support-no} TIFF : ${tiff_support-no} WIC : ${wic_support-no} dwebp: yes Output format support ===================== PNG : ${png_support-no} WIC : ${wic_support-no} gif2webp: ${build_gif2webp-no} webpmux: ${enable_experimental_libwebpmux-no} ])