webp/configure.ac

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AC_INIT([webpdecode], [0.1])
AC_CANONICAL_TARGET
AM_INIT_AUTOMAKE([-Wall foreign subdir-objects])
AC_PROG_LIBTOOL
AM_PROG_CC_C_O
AC_ARG_WITH([pkgconfigdir], AS_HELP_STRING([--with-pkgconfigdir=PATH],
[Path to the pkgconfig directory [[LIBDIR/pkgconfig]]]),
[pkgconfigdir="$withval"], [pkgconfigdir='${libdir}/pkgconfig'])
AC_SUBST([pkgconfigdir])
dnl === Check libz is present
if test "$enable_experimental" = "yes"; then
AC_CHECK_HEADER(zlib.h,
AC_CHECK_LIB(z, gzsetparams,,AC_MSG_ERROR(zlib library not found)),
AC_MSG_ERROR(zlib not available - no zlib.h)
)
fi
dnl === check for PNG support ===
PNG_INCLUDES=""
PNG_LIBS=""
AC_PATH_PROG(LIBPNG_CONFIG, libpng-config)
if test -n "$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
fi
AC_ARG_WITH(pngincludedir,
[--with-pngincludedir=DIR use PNG includes from DIR],
PNG_INCLUDES="-I$withval")
AC_ARG_WITH(pnglibdir,
[--with-pnglibdir=DIR use PNG libraries from DIR],
[PNG_LIBS="-L$withval"])
SAVED_CPPFLAGS=$CPPFLAGS
SAVED_LIBS=$LIBS
CPPFLAGS="$PNG_INCLUDES $CPPFLAGS"
LIBS="$PNG_LIBS $LIBS"
AC_CHECK_HEADER(png.h,
AC_CHECK_LIB(png, main,
[PNG_LIBS="$PNG_LIBS -lpng"
PNG_INCLUDES="$PNG_INCLUDES -DWEBP_HAVE_PNG"
AC_DEFINE(WEBP_HAVE_PNG, [1], [Set to 1 if PNG library is installed])
],
AC_MSG_WARN(Optional png library not found),
[$MATH_LIBS]),
AC_MSG_WARN(png library not available - no png.h)
)
AC_SUBST(PNG_LIBS)
AC_SUBST(PNG_INCLUDES)
CPPFLAGS=$SAVED_CPPFLAGS
LIBS=$SAVED_LIBS
dnl === check for JPEG support ===
JPEG_INCLUDES=""
JPEG_LIBS=""
AC_ARG_WITH(jpegincludedir,
[--with-jpegincludedir=DIR use JPEG includes from DIR],
JPEG_INCLUDES="-I$withval")
AC_ARG_WITH(jpeglibdir,
[--with-jpeglibdir=DIR use JPEG libraries from DIR],
[JPEG_LIBS="-L$withval"])
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="$JPEG_INCLUDES -DWEBP_HAVE_JPEG"
AC_DEFINE(WEBP_HAVE_JPEG, [1], [Set to 1 if JPEG library is installed])
],
AC_MSG_WARN(Optional jpeg library not found),
[$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 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 <shlwapi.h>
#include <windows.h>
#include <wincodec.h>
"
# 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 the flag WEBP_EXPERIMENTAL_FEATURES
USE_EXPERIMENTAL_CODE=""
AC_MSG_CHECKING(if --enable-experimental option is specified)
AC_ARG_ENABLE(experimental, [ --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 =========================
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/libwebp.pc])
AC_OUTPUT