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945cfa3b7c
webp/configure.ac
James Zern 5bd04a087c sync versions with 0.4.4 
libwebp{,decoder} - 0.4.4
libwebp libtool - 5.4.0
libwebpdecoder libtool - 1.4.0

mux/demux - 0.2.2 (unchanged)
libtool - 1.2.0 (unchanged)

(cherry picked from commit 62864042c0)

Change-Id: I7d421dc47ad4d25a17450ce1b04562c5d58c596b
2015-10-28 23:43:40 -07:00

657 lines
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AC_INIT([libwebp], [0.4.4],
[http://code.google.com/p/webp/issues],,
[http://developers.google.com/speed/webp])
AC_CANONICAL_HOST
AC_PREREQ([2.60])
AM_INIT_AUTOMAKE([-Wall foreign subdir-objects])
dnl === automake >= 1.12 requires this for 'unusual archivers' support.
dnl === it must occur before LT_INIT (AC_PROG_LIBTOOL).
m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
AC_PROG_LIBTOOL
AM_PROG_CC_C_O
AC_PROG_CXX
dnl === Enable less verbose output when building.
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
dnl == test endianness
AC_C_BIGENDIAN
dnl === SET_IF_UNSET(shell_var, value)
dnl === Set the shell variable 'shell_var' to 'value' if it is unset.
AC_DEFUN([SET_IF_UNSET], [test "${$1+set}" = "set" || $1=$2])
AC_ARG_ENABLE([everything],
AS_HELP_STRING([--enable-everything],
[Enable all optional targets. These can still be
disabled with --disable-target]),
[SET_IF_UNSET([enable_libwebpdecoder], [$enableval])
SET_IF_UNSET([enable_libwebpdemux], [$enableval])
SET_IF_UNSET([enable_libwebpextras], [$enableval])
SET_IF_UNSET([enable_libwebpmux], [$enableval])])
AC_ARG_WITH([pkgconfigdir], AS_HELP_STRING([--with-pkgconfigdir=DIR],
[Path to the pkgconfig directory @<:@LIBDIR/pkgconfig@:>@]),
[pkgconfigdir="$withval"], [pkgconfigdir='${libdir}/pkgconfig'])
AC_SUBST([pkgconfigdir])
dnl === TEST_AND_ADD_FLAGS(var, compiler, flag)
dnl === Checks whether $CC (or $CXX if compiler is 'CXX') supports 'flag' and
dnl === adds it to 'var' on success.
AC_DEFUN([TEST_AND_ADD_FLAGS],
[AS_IF([test "$2" = "CXX"],
[SAVED_FLAGS="$CXXFLAGS"
CXXFLAGS="-Werror $3"
AC_MSG_CHECKING([whether $CXX supports $3])
AC_LANG_PUSH([C++])],
[SAVED_FLAGS="$CFLAGS"
CFLAGS="-Werror $3"
AC_MSG_CHECKING([whether $CC supports $3])])
dnl Note AC_LANG_PROGRAM([]) uses an old-style main definition.
AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) { return 0; }])],
[AC_MSG_RESULT([yes])]
dnl Simply append the variable avoiding a
dnl compatibility ifdef for AS_VAR_APPEND as this
dnl variable shouldn't grow all that large.
[$1="${$1} $3"],
[AC_MSG_RESULT([no])])
AS_IF([test "$2" = "CXX"],
[AC_LANG_POP([C++])
CXXFLAGS="$SAVED_FLAGS"],
[CFLAGS="$SAVED_FLAGS"])])
TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wall])
TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wdeclaration-after-statement])
TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wextra])
TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wformat-nonliteral])
TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wformat-security])
TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wmissing-declarations])
TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wmissing-prototypes])
TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wold-style-definition])
TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wshadow])
TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wshorten-64-to-32])
TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wunreachable-code])
TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wunused-but-set-variable])
TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wunused])
TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wvla])
# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62040
# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61622
AS_IF([test "$GCC" = "yes" ], [
gcc_version=`$CC -dumpversion`
gcc_wht_bug=""
case "$host_cpu" in
aarch64|arm64)
case "$gcc_version" in
4.9|4.9.0|4.9.1) gcc_wht_bug=yes ;;
esac
esac
AS_IF([test "$gcc_wht_bug" = "yes"], [
TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-frename-registers])])])
AC_SUBST([AM_CFLAGS])
dnl === Check for machine specific flags
AC_ARG_ENABLE([avx2],
AS_HELP_STRING([--disable-avx2],
[Disable detection of AVX2 support
@<:@default=auto@:>@]))
AS_IF([test "x$enable_avx2" != "xno" -a "x$enable_sse4_1" != "xno" \
-a "x$enable_sse2" != "xno"], [
TEST_AND_ADD_FLAGS([AVX2_FLAGS], [C], [-mavx2])
AS_IF([test -n "$AVX2_FLAGS"], [
SAVED_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS $AVX2_FLAGS"
AC_CHECK_HEADER([immintrin.h],
[AC_DEFINE(WEBP_HAVE_AVX2, [1],
[Set to 1 if AVX2 is supported])],
[AVX2_FLAGS=""],
dnl it's illegal to directly include avx2intrin.h, but it's
dnl included conditionally in immintrin.h, tricky!
[#ifndef __AVX2__
#error avx2 is not enabled
#endif
])
CFLAGS=$SAVED_CFLAGS])
AC_SUBST([AVX2_FLAGS])])
AC_ARG_ENABLE([sse4.1],
AS_HELP_STRING([--disable-sse4.1],
[Disable detection of SSE4.1 support
@<:@default=auto@:>@]))
AS_IF([test "x$enable_sse4_1" != "xno" -a "x$enable_sse2" != "xno"], [
TEST_AND_ADD_FLAGS([SSE41_FLAGS], [C], [-msse4.1])
AS_IF([test -n "$SSE41_FLAGS"], [
SAVED_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS $SSE41_FLAGS"
AC_CHECK_HEADER([smmintrin.h],
[AC_DEFINE(WEBP_HAVE_SSE41, [1],
[Set to 1 if SSE4.1 is supported])],
[SSE41_FLAGS=""])
CFLAGS=$SAVED_CFLAGS])
AC_SUBST([SSE41_FLAGS])])
AC_ARG_ENABLE([sse2],
AS_HELP_STRING([--disable-sse2],
[Disable detection of SSE2 support
@<:@default=auto@:>@]))
AS_IF([test "x$enable_sse2" != "xno"], [
TEST_AND_ADD_FLAGS([SSE2_FLAGS], [C], [-msse2])
AS_IF([test -n "$SSE2_FLAGS"], [
SAVED_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS $SSE2_FLAGS"
AC_CHECK_HEADER([emmintrin.h],
[AC_DEFINE(WEBP_HAVE_SSE2, [1],
[Set to 1 if SSE2 is supported])],
[SSE2_FLAGS=""])
CFLAGS=$SAVED_CFLAGS])
AC_SUBST([SSE2_FLAGS])])
dnl === CLEAR_LIBVARS([var_pfx])
dnl === Clears <var_pfx>_{INCLUDES,LIBS}.
AC_DEFUN([CLEAR_LIBVARS], [$1_INCLUDES=""; $1_LIBS=""])
dnl === WITHLIB_OPTION([opt_pfx], [outvar_pfx])
dnl === Defines --with-<opt_pfx>{include,lib}dir options which set
dnl === the variables <outvar_pfx>_{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 === LIBCHECK_PROLOGUE([var_pfx])
dnl === Caches the current values of CPPFLAGS/LIBS in SAVED_* then
dnl === prepends the current values with <var_pfx>_{INCLUDES,LIBS}.
AC_DEFUN([LIBCHECK_PROLOGUE],
[SAVED_CPPFLAGS=$CPPFLAGS
SAVED_LIBS=$LIBS
CPPFLAGS="$$1_INCLUDES $CPPFLAGS"
LIBS="$$1_LIBS $LIBS"])
dnl === LIBCHECK_EPILOGUE([var_pfx])
dnl === Restores the values of CPPFLAGS/LIBS from SAVED_* and exports
dnl === <var_pfx>_{INCLUDES,LIBS} with AC_SUBST.
AC_DEFUN([LIBCHECK_EPILOGUE],
[AC_SUBST($1_LIBS)
AC_SUBST($1_INCLUDES)
CPPFLAGS=$SAVED_CPPFLAGS
LIBS=$SAVED_LIBS])
dnl === Check for gcc builtins
dnl === CHECK_FOR_BUILTIN([builtin], [param], [define])
dnl === links a C AC_LANG_PROGRAM, with <builtin>(<param>)
dnl === AC_DEFINE'ing <define> if successful.
AC_DEFUN([CHECK_FOR_BUILTIN],
[AC_LANG_PUSH([C])
AC_MSG_CHECKING([for $1])
AC_LINK_IFELSE([AC_LANG_PROGRAM([], [$1($2)])],
[AC_MSG_RESULT([yes])
AC_DEFINE([$3], [1],
[Set to 1 if $1 is available])],
[AC_MSG_RESULT([no])]),
AC_LANG_POP])
dnl AC_CHECK_FUNC doesn't work with builtin's.
CHECK_FOR_BUILTIN([__builtin_bswap16], [1u << 15], [HAVE_BUILTIN_BSWAP16])
CHECK_FOR_BUILTIN([__builtin_bswap32], [1u << 31], [HAVE_BUILTIN_BSWAP32])
CHECK_FOR_BUILTIN([__builtin_bswap64], [1ull << 63], [HAVE_BUILTIN_BSWAP64])
dnl === Check for pthread support
AC_ARG_ENABLE([threading],
AS_HELP_STRING([--disable-threading],
[Disable detection of thread support]),,
[enable_threading=yes])
if test "$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"
],
[AC_CHECK_FUNC([_beginthreadex],
[AC_DEFINE([WEBP_USE_THREAD], [1],
[Undefine this to disable thread
support.])],
[enable_threading=no])])
fi
AC_MSG_NOTICE([checking if threading is enabled... ${enable_threading-no}])
dnl === check for OpenGL/GLUT support ===
AC_ARG_ENABLE([gl], AS_HELP_STRING([--disable-gl],
[Disable detection of OpenGL support
@<:@default=auto@:>@]))
AS_IF([test "x$enable_gl" != "xno"], [
CLEAR_LIBVARS([GL])
WITHLIB_OPTION([gl], [GL])
LIBCHECK_PROLOGUE([GL])
glut_cflags="none"
glut_ldflags="none"
case $host_os in
darwin*)
# Special case for OSX builds. Append these to give the user a chance to
# override with --with-gl*
glut_cflags="$glut_cflags|-framework GLUT -framework OpenGL"
glut_ldflags="$glut_ldflags|-framework GLUT -framework OpenGL"
;;
esac
GLUT_SAVED_CPPFLAGS="$CPPFLAGS"
SAVED_IFS="$IFS"
IFS="|"
for flag in $glut_cflags; do
# restore IFS immediately as the autoconf macros may need the default.
IFS="$SAVED_IFS"
unset ac_cv_header_GL_glut_h
unset ac_cv_header_OpenGL_glut_h
case $flag in
none) ;;
*) CPPFLAGS="$flag $CPPFLAGS";;
esac
AC_CHECK_HEADERS([GL/glut.h GLUT/glut.h OpenGL/glut.h],
[glut_headers=yes;
test "$flag" = "none" || GL_INCLUDES="$CPPFLAGS";
break])
CPPFLAGS="$GLUT_SAVED_CPPFLAGS"
test "$glut_headers" = "yes" && break
done
IFS="$SAVED_IFS"
if test "$glut_headers" = "yes"; then
AC_LANG_PUSH([C])
GLUT_SAVED_LDFLAGS="$LDFLAGS"
SAVED_IFS="$IFS"
IFS="|"
for flag in $glut_ldflags; do
# restore IFS immediately as the autoconf macros may need the default.
IFS="$SAVED_IFS"
unset ac_cv_search_glBegin
case $flag in
none) ;;
*) LDFLAGS="$flag $LDFLAGS";;
esac
# find libGL
GL_SAVED_LIBS="$LIBS"
AC_SEARCH_LIBS([glBegin], [GL OpenGL opengl32])
LIBS="$GL_SAVED_LIBS"
# A direct link to libGL may not be necessary on e.g., linux.
GLUT_SAVED_LIBS="$LIBS"
for lib in "" "-lglut" "-lglut $ac_cv_search_glBegin"; do
LIBS="$lib"
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([
#ifdef __cplusplus
# define EXTERN_C extern "C"
#else
# define EXTERN_C
#endif
EXTERN_C char glOrtho();
EXTERN_C char glutMainLoop();
],[
glOrtho();
glutMainLoop();
])
],
AC_DEFINE(WEBP_HAVE_GL, [1],
[Set to 1 if OpenGL is supported])
[glut_support=yes], []
)
if test "$glut_support" = "yes"; then
GL_LIBS="$LDFLAGS $lib"
break
fi
done
LIBS="$GLUT_SAVED_LIBS"
LDFLAGS="$GLUT_SAVED_LDFLAGS"
test "$glut_support" = "yes" && break
done
IFS="$SAVED_IFS"
AC_LANG_POP
fi
LIBCHECK_EPILOGUE([GL])
if test "$glut_support" = "yes" -a "$enable_libwebpdemux" = "yes"; then
build_vwebp=yes
fi
])
AM_CONDITIONAL([BUILD_VWEBP], [test "$build_vwebp" = "yes"])
dnl === check for PNG support ===
AC_ARG_ENABLE([png], AS_HELP_STRING([--disable-png],
[Disable detection of PNG format support
@<:@default=auto@:>@]))
AS_IF([test "x$enable_png" != "xno"], [
CLEAR_LIBVARS([PNG])
AC_PATH_PROGS([LIBPNG_CONFIG],
[libpng-config libpng16-config libpng15-config libpng14-config \
libpng12-config])
if test -n "$LIBPNG_CONFIG"; then
PNG_INCLUDES=`$LIBPNG_CONFIG --cflags`
PNG_LIBS="`$LIBPNG_CONFIG --ldflags`"
fi
WITHLIB_OPTION([png], [PNG])
LIBCHECK_PROLOGUE([PNG])
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=""
],
[$MATH_LIBS]),
[AC_MSG_WARN(png library not available - no png.h)
PNG_LIBS=""
PNG_INCLUDES=""
],
)
LIBCHECK_EPILOGUE([PNG])
])
dnl === check for JPEG support ===
AC_ARG_ENABLE([jpeg],
AS_HELP_STRING([--disable-jpeg],
[Disable detection of JPEG format support
@<:@default=auto@:>@]))
AS_IF([test "x$enable_jpeg" != "xno"], [
CLEAR_LIBVARS([JPEG])
WITHLIB_OPTION([jpeg], [JPEG])
LIBCHECK_PROLOGUE([JPEG])
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),
[$MATH_LIBS]),
AC_MSG_WARN(jpeg library not available - no jpeglib.h)
)
LIBCHECK_EPILOGUE([JPEG])
])
dnl === check for TIFF support ===
AC_ARG_ENABLE([tiff],
AS_HELP_STRING([--disable-tiff],
[Disable detection of TIFF format support
@<:@default=auto@:>@]))
AS_IF([test "x$enable_tiff" != "xno"], [
CLEAR_LIBVARS([TIFF])
WITHLIB_OPTION([tiff], [TIFF])
LIBCHECK_PROLOGUE([TIFF])
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),
[$MATH_LIBS]),
AC_MSG_WARN(tiff library not available - no tiffio.h)
)
LIBCHECK_EPILOGUE([TIFF])
])
dnl === check for GIF support ===
AC_ARG_ENABLE([gif], AS_HELP_STRING([--disable-gif],
[Disable detection of GIF format support
@<:@default=auto@:>@]))
AS_IF([test "x$enable_gif" != "xno"], [
CLEAR_LIBVARS([GIF])
WITHLIB_OPTION([gif], [GIF])
LIBCHECK_PROLOGUE([GIF])
AC_CHECK_HEADER(gif_lib.h,
AC_CHECK_LIB([gif], [DGifOpenFileHandle],
[GIF_LIBS="$GIF_LIBS -lgif"
AC_DEFINE(WEBP_HAVE_GIF, [1],
[Set to 1 if GIF library is installed])
gif_support=yes
],
AC_MSG_WARN(Optional gif library not found),
[$MATH_LIBS]),
AC_MSG_WARN(gif library not available - no gif_lib.h)
)
LIBCHECK_EPILOGUE([GIF])
if test "$gif_support" = "yes" -a \
"$enable_libwebpdemux" = "yes"; then
dnl === Enable C++ compiler for .cc sources, if available.
AC_LANG_PUSH([C++])
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([#include <iostream>],
[std::cout << "a";])],
[cxx_support=yes],
[AC_MSG_WARN([C++ compiler absent: compilation of C++ sources disabled.])
cxx_support=no])
AC_LANG_POP([C++])
if test "$cxx_support" = "yes"; then
build_animdiff=yes
TEST_AND_ADD_FLAGS([AM_CXXFLAGS], [CXX], [-Wall])
TEST_AND_ADD_FLAGS([AM_CXXFLAGS], [CXX], [-Wextra])
TEST_AND_ADD_FLAGS([AM_CXXFLAGS], [CXX], [-Wformat-nonliteral])
TEST_AND_ADD_FLAGS([AM_CXXFLAGS], [CXX], [-Wformat-security])
TEST_AND_ADD_FLAGS([AM_CXXFLAGS], [CXX], [-Wmissing-declarations])
TEST_AND_ADD_FLAGS([AM_CXXFLAGS], [CXX], [-Wshadow])
TEST_AND_ADD_FLAGS([AM_CXXFLAGS], [CXX], [-Wshorten-64-to-32])
TEST_AND_ADD_FLAGS([AM_CXXFLAGS], [CXX], [-Wunreachable-code])
TEST_AND_ADD_FLAGS([AM_CXXFLAGS], [CXX], [-Wunused-but-set-variable])
TEST_AND_ADD_FLAGS([AM_CXXFLAGS], [CXX], [-Wunused])
TEST_AND_ADD_FLAGS([AM_CXXFLAGS], [CXX], [-Wvla])
AC_SUBST([AM_CXXFLAGS])
fi
fi
if test "$gif_support" = "yes" -a \
"$enable_libwebpmux" = "yes"; then
build_gif2webp=yes
fi
])
AM_CONDITIONAL([BUILD_ANIMDIFF], [test "${build_animdiff}" = "yes"])
AM_CONDITIONAL([BUILD_GIF2WEBP], [test "${build_gif2webp}" = "yes"])
dnl === check for WIC support ===
AC_ARG_ENABLE([wic],
AS_HELP_STRING([--disable-wic],
[Disable Windows Imaging Component (WIC) detection.
@<:@default=auto@:>@]),,
[enable_wic=yes])
case $host_os in
mingw*)
if test "$enable_wic" = "yes"; 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
esac
dnl === If --enable-aligned is defined, define WEBP_FORCE_ALIGNED
AC_MSG_CHECKING(if --enable-aligned option is specified)
AC_ARG_ENABLE([aligned],
AS_HELP_STRING([--enable-aligned],
[Force aligned memory operations in non-dsp code
(may be slower)]))
if test "$enable_aligned" = "yes"; then
AC_DEFINE(WEBP_FORCE_ALIGNED, [1],
[Define to 1 to force aligned memory operations])
fi
AC_MSG_RESULT(${enable_aligned-no})
dnl === If --enable-swap-16bit-csp is defined, add -DWEBP_SWAP_16BIT_CSP
USE_SWAP_16BIT_CSP=""
AC_MSG_CHECKING(if --enable-swap-16bit-csp option is specified)
AC_ARG_ENABLE([swap-16bit-csp],
AS_HELP_STRING([--enable-swap-16bit-csp],
[Enable byte swap for 16 bit colorspaces]))
if test "$enable_swap_16bit_csp" = "yes"; then
USE_SWAP_16BIT_CSP="-DWEBP_SWAP_16BIT_CSP"
fi
AC_MSG_RESULT(${enable_swap_16bit_csp-no})
AC_SUBST(USE_SWAP_16BIT_CSP)
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 "$enable_experimental" = "yes"; then
AC_DEFINE(WEBP_EXPERIMENTAL_FEATURES, [1], [Enable experimental code])
USE_EXPERIMENTAL_CODE="-DWEBP_EXPERIMENTAL_FEATURES"
fi
AC_MSG_RESULT(${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([libwebpmux],
AS_HELP_STRING([--enable-libwebpmux],
[Build libwebpmux @<:@default=no@:>@]))
AC_MSG_RESULT(${enable_libwebpmux-no})
AM_CONDITIONAL([WANT_MUX], [test "$enable_libwebpmux" = "yes"])
dnl === Check whether libwebpdemux should be built
AC_MSG_CHECKING(whether libwebpdemux is to be built)
AC_ARG_ENABLE([libwebpdemux],
AS_HELP_STRING([--enable-libwebpdemux],
[Build libwebpdemux @<:@default=no@:>@]))
AC_MSG_RESULT(${enable_libwebpdemux-no})
AM_CONDITIONAL([WANT_DEMUX], [test "$enable_libwebpdemux" = "yes"])
dnl === Check whether decoder library should be built.
AC_MSG_CHECKING(whether decoder library is to be built)
AC_ARG_ENABLE([libwebpdecoder],
AS_HELP_STRING([--enable-libwebpdecoder],
[Build libwebpdecoder @<:@default=no@:>@]))
AC_MSG_RESULT(${enable_libwebpdecoder-no})
AM_CONDITIONAL([BUILD_LIBWEBPDECODER], [test "$enable_libwebpdecoder" = "yes"])
dnl === Check whether libwebpextras should be built
AC_MSG_CHECKING(whether libwebpextras is to be built)
AC_ARG_ENABLE([libwebpextras],
AS_HELP_STRING([--enable-libwebpextras],
[Build libwebpextras @<:@default=no@:>@]))
AC_MSG_RESULT(${enable_libwebpextras-no})
AM_CONDITIONAL([WANT_EXTRAS], [test "$enable_libwebpextras" = "yes"])
dnl =========================
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_HEADERS([src/webp/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/extras/Makefile \
src/libwebp.pc src/libwebpdecoder.pc \
src/demux/libwebpdemux.pc src/mux/libwebpmux.pc \
src/extras/libwebpextras.pc])
AC_OUTPUT
AC_MSG_NOTICE([
WebP Configuration Summary
--------------------------
Shared libraries: ${enable_shared}
Static libraries: ${enable_static}
Threading support: ${enable_threading-no}
libwebp: yes
libwebpdecoder: ${enable_libwebpdecoder-no}
libwebpdemux: ${enable_libwebpdemux-no}
libwebpmux: ${enable_libwebpmux-no}
libwebpextras: ${enable_libwebpextras-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}
GIF support : ${gif_support-no}
anim_diff : ${build_animdiff-no}
gif2webp : ${build_gif2webp-no}
webpmux : ${enable_libwebpmux-no}
vwebp : ${build_vwebp-no}
])
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