mirror of
https://github.com/webmproject/libwebp.git
synced 2024-11-19 20:08:28 +01:00
caa19e5b3a
https://bugs.chromium.org/p/webp -> https://issues.webmproject.org Change-Id: I45324210d4e9351238da127efd04b22627548545
806 lines
28 KiB
Plaintext
806 lines
28 KiB
Plaintext
AC_INIT([libwebp], [1.4.0],
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[https://issues.webmproject.org],,
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[https://developers.google.com/speed/webp])
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AC_CANONICAL_HOST
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AC_PREREQ([2.60])
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AM_INIT_AUTOMAKE([-Wall foreign subdir-objects])
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dnl === automake >= 1.12 requires this for 'unusual archivers' support.
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dnl === it must occur before LT_INIT (AC_PROG_LIBTOOL).
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m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
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dnl === AC_PROG_LIBTOOL is deprecated.
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m4_ifdef([LT_INIT], [LT_INIT], [AC_PROG_LIBTOOL])
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AC_PROG_SED
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AM_PROG_CC_C_O
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dnl === Enable less verbose output when building.
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m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
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dnl == test endianness
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AC_C_BIGENDIAN
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dnl === SET_IF_UNSET(shell_var, value)
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dnl === Set the shell variable 'shell_var' to 'value' if it is unset.
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AC_DEFUN([SET_IF_UNSET], [test "${$1+set}" = "set" || $1=$2])
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AC_ARG_ENABLE([everything],
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AS_HELP_STRING([--enable-everything],
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[Enable all optional targets. These can still be
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disabled with --disable-target]),
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[SET_IF_UNSET([enable_libsharpyuv], [$enableval])
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SET_IF_UNSET([enable_libwebpdecoder], [$enableval])
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SET_IF_UNSET([enable_libwebpdemux], [$enableval])
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SET_IF_UNSET([enable_libwebpextras], [$enableval])
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SET_IF_UNSET([enable_libwebpmux], [$enableval])])
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dnl === Check whether libwebpmux should be built
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AC_MSG_CHECKING(whether libwebpmux is to be built)
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AC_ARG_ENABLE([libwebpmux],
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AS_HELP_STRING([--disable-libwebpmux],
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[Disable libwebpmux @<:@default=no@:>@]),
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[], [enable_libwebpmux=yes])
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AC_MSG_RESULT(${enable_libwebpmux-no})
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AM_CONDITIONAL([BUILD_MUX], [test "$enable_libwebpmux" = "yes"])
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dnl === Check whether libwebpdemux should be built
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AC_MSG_CHECKING(whether libwebpdemux is to be built)
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AC_ARG_ENABLE([libwebpdemux],
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AS_HELP_STRING([--disable-libwebpdemux],
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[Disable libwebpdemux @<:@default=no@:>@]),
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[], [enable_libwebpdemux=yes])
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AC_MSG_RESULT(${enable_libwebpdemux-no})
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AM_CONDITIONAL([BUILD_DEMUX], [test "$enable_libwebpdemux" = "yes"])
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dnl === Check whether decoder library should be built.
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AC_MSG_CHECKING(whether decoder library is to be built)
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AC_ARG_ENABLE([libwebpdecoder],
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AS_HELP_STRING([--enable-libwebpdecoder],
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[Build libwebpdecoder @<:@default=no@:>@]))
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AC_MSG_RESULT(${enable_libwebpdecoder-no})
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AM_CONDITIONAL([BUILD_LIBWEBPDECODER], [test "$enable_libwebpdecoder" = "yes"])
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dnl === Check whether libwebpextras should be built
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AC_MSG_CHECKING(whether libwebpextras is to be built)
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AC_ARG_ENABLE([libwebpextras],
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AS_HELP_STRING([--enable-libwebpextras],
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[Build libwebpextras @<:@default=no@:>@]))
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AC_MSG_RESULT(${enable_libwebpextras-no})
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AM_CONDITIONAL([BUILD_EXTRAS], [test "$enable_libwebpextras" = "yes"])
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dnl === If --enable-asserts is not defined, define NDEBUG
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AC_MSG_CHECKING(whether asserts are enabled)
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AC_ARG_ENABLE([asserts],
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AS_HELP_STRING([--enable-asserts],
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[Enable assert checks]))
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if test "x${enable_asserts-no}" = "xno"; then
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AM_CPPFLAGS="${AM_CPPFLAGS} -DNDEBUG"
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fi
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AC_MSG_RESULT(${enable_asserts-no})
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AC_SUBST([AM_CPPFLAGS])
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AC_ARG_WITH([pkgconfigdir], AS_HELP_STRING([--with-pkgconfigdir=DIR],
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[Path to the pkgconfig directory @<:@LIBDIR/pkgconfig@:>@]),
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[pkgconfigdir="$withval"], [pkgconfigdir='${libdir}/pkgconfig'])
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AC_SUBST([pkgconfigdir])
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dnl === TEST_AND_ADD_CFLAGS(var, flag)
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dnl === Checks whether $CC supports 'flag' and adds it to 'var'
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dnl === on success.
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AC_DEFUN([TEST_AND_ADD_CFLAGS],
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[SAVED_CFLAGS="$CFLAGS"
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CFLAGS="-Werror $2"
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AC_MSG_CHECKING([whether $CC supports $2])
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dnl Note AC_LANG_PROGRAM([]) uses an old-style main definition.
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AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) { return 0; }])],
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[AC_MSG_RESULT([yes])]
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dnl Simply append the variable avoiding a
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dnl compatibility ifdef for AS_VAR_APPEND as this
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dnl variable shouldn't grow all that large.
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[$1="${$1} $2"],
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[AC_MSG_RESULT([no])])
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CFLAGS="$SAVED_CFLAGS"])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-fvisibility=hidden])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wall])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wconstant-conversion])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wdeclaration-after-statement])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wextra])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wextra-semi-stmt])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wfloat-conversion])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wformat -Wformat-nonliteral])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wformat -Wformat-security])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wmissing-declarations])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wmissing-prototypes])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wold-style-definition])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wparentheses-equality])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wshadow])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wshorten-64-to-32])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wstrict-prototypes])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wundef])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wunreachable-code-aggressive])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wunreachable-code])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wunused-but-set-variable])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wunused])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wvla])
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# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62040
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# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61622
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AS_IF([test "$GCC" = "yes" ], [
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gcc_version=`$CC -dumpversion`
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gcc_wht_bug=""
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case "$host_cpu" in
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aarch64|arm64)
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case "$gcc_version" in
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4.9|4.9.0|4.9.1) gcc_wht_bug=yes ;;
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esac
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esac
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AS_IF([test "$gcc_wht_bug" = "yes"], [
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-frename-registers])])])
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# Use -flax-vector-conversions, if available, when building intrinsics with
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# older versions of gcc. The flag appeared in 4.3.x, but if backported, and
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# -fno-lax-vector-conversions is set, errors may occur with the intrinsics
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# files along with the older system includes, e.g., emmintrin.h.
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# Originally observed with cc (GCC) 4.2.1 20070831 patched [FreeBSD] (9.3).
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# https://bugs.chromium.org/p/webp/issues/detail?id=274
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AS_IF([test "$GCC" = "yes" ], [
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case "$host_cpu" in
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amd64|i?86|x86_64)
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AC_COMPILE_IFELSE(
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dnl only check for -flax-vector-conversions with older gcc, skip
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dnl clang as it reports itself as 4.2.1, but the flag isn't needed.
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[AC_LANG_SOURCE([#if !defined(__clang__) && defined(__GNUC__) && \
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((__GNUC__ << 8) | __GNUC_MINOR__) < 0x403
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#error old gcc
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#endif
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int main(void) { return 0; }
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])],,
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[TEST_AND_ADD_CFLAGS([INTRINSICS_CFLAGS],
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[-flax-vector-conversions])])
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;;
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esac])
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AC_SUBST([AM_CFLAGS])
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dnl === Check for machine specific flags
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AC_ARG_ENABLE([sse4.1],
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AS_HELP_STRING([--disable-sse4.1],
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[Disable detection of SSE4.1 support
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@<:@default=auto@:>@]))
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AS_IF([test "x$enable_sse4_1" != "xno" -a "x$enable_sse2" != "xno"], [
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SSE41_FLAGS="$INTRINSICS_CFLAGS $SSE41_FLAGS"
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TEST_AND_ADD_CFLAGS([SSE41_FLAGS], [-msse4.1])
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AS_IF([test -n "$SSE41_FLAGS"], [
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SAVED_CFLAGS=$CFLAGS
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CFLAGS="$CFLAGS $SSE41_FLAGS"
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AC_CHECK_HEADER([smmintrin.h],
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[AC_DEFINE(WEBP_HAVE_SSE41, [1],
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[Set to 1 if SSE4.1 is supported])],
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[SSE41_FLAGS=""])
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CFLAGS=$SAVED_CFLAGS])
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AC_SUBST([SSE41_FLAGS])])
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AC_ARG_ENABLE([sse2],
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AS_HELP_STRING([--disable-sse2],
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[Disable detection of SSE2 support
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@<:@default=auto@:>@]))
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AS_IF([test "x$enable_sse2" != "xno"], [
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SSE2_FLAGS="$INTRINSICS_CFLAGS $SSE2_FLAGS"
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TEST_AND_ADD_CFLAGS([SSE2_FLAGS], [-msse2])
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AS_IF([test -n "$SSE2_FLAGS"], [
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SAVED_CFLAGS=$CFLAGS
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CFLAGS="$CFLAGS $SSE2_FLAGS"
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AC_CHECK_HEADER([emmintrin.h],
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[AC_DEFINE(WEBP_HAVE_SSE2, [1],
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[Set to 1 if SSE2 is supported])],
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[SSE2_FLAGS=""])
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CFLAGS=$SAVED_CFLAGS])
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AC_SUBST([SSE2_FLAGS])])
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AC_ARG_ENABLE([neon],
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AS_HELP_STRING([--disable-neon],
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[Disable detection of NEON support
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@<:@default=auto@:>@]))
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AC_ARG_ENABLE([neon_rtcd],
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AS_HELP_STRING([--disable-neon-rtcd],
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[Disable runtime detection of NEON support via
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/proc/cpuinfo on Linux hosts
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@<:@default=auto@:>@]))
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# For ARM(7) hosts:
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# Both NEON flags unset and NEON support detected = build all modules with NEON
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# NEON detected with the use of -mfpu=neon = build only NEON modules with NEON
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AS_IF([test "x$enable_neon" != "xno"], [
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case "$host_cpu" in
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arm|armv7*)
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# Test for NEON support without flags before falling back to -mfpu=neon
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for flag in '' '-mfpu=neon'; do
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LOCAL_NEON_FLAGS="$INTRINSICS_CFLAGS $NEON_FLAGS"
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TEST_AND_ADD_CFLAGS([LOCAL_NEON_FLAGS], [$flag])
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SAVED_CFLAGS=$CFLAGS
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CFLAGS="$CFLAGS $LOCAL_NEON_FLAGS"
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dnl Note AC_LANG_PROGRAM([]) uses an old-style main definition.
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AC_COMPILE_IFELSE([AC_LANG_SOURCE([
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#include <arm_neon.h>
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int main(void) {
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int8x8_t v = vdup_n_s8(0);
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(void)v;
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return 0;
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}])],
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[NEON_FLAGS="$(echo $LOCAL_NEON_FLAGS | $SED 's/^ *//')"
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AS_IF([test -n "$NEON_FLAGS"], [
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AS_IF([test "${host_os%%-*}" = "linux" -o \
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"x$enable_neon_rtcd" = "xno"], [
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CFLAGS=$SAVED_CFLAGS
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AC_DEFINE(WEBP_HAVE_NEON, [1], [Set to 1 if NEON is supported])
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break
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],[
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AC_MSG_WARN(m4_normalize([NEON runtime cpu-detection is
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unavailable for ${host_os%%-*}. Force
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with CFLAGS=-mfpu=neon or
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--disable-neon-rtcd.]))
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enable_neon_rtcd=no
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NEON_FLAGS=""
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])
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],[
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CFLAGS=$SAVED_CFLAGS
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AC_DEFINE(WEBP_HAVE_NEON, [1], [Set to 1 if NEON is supported])
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break
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])])
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CFLAGS=$SAVED_CFLAGS
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done
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AS_IF([test -n "$NEON_FLAGS"], [
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# If NEON is available and rtcd is disabled apply NEON_FLAGS globally.
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AS_IF([test "x$enable_neon_rtcd" = "xno"], [
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AM_CFLAGS="$AM_CFLAGS $NEON_FLAGS"
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NEON_FLAGS=""],
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[AC_DEFINE(WEBP_HAVE_NEON_RTCD, [1],
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[Set to 1 if runtime detection of NEON is enabled])])])
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case "$host_os" in
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*android*) AC_CHECK_HEADERS([cpu-features.h]) ;;
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esac
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;;
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aarch64*|arm64*)
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AC_DEFINE(WEBP_HAVE_NEON, [1], [Set to 1 if NEON is supported])
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;;
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esac
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AC_SUBST([NEON_FLAGS])])
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dnl === CLEAR_LIBVARS([var_pfx])
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dnl === Clears <var_pfx>_{INCLUDES,LIBS}.
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AC_DEFUN([CLEAR_LIBVARS], [$1_INCLUDES=""; $1_LIBS=""])
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dnl === WITHLIB_OPTION([opt_pfx], [outvar_pfx])
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dnl === Defines --with-<opt_pfx>{include,lib}dir options which set
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dnl === the variables <outvar_pfx>_{INCLUDES,LIBS}.
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AC_DEFUN([WITHLIB_OPTION],
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[AC_ARG_WITH([$1includedir],
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AS_HELP_STRING([--with-$1includedir=DIR],
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[use $2 includes from DIR]),
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$2_INCLUDES="-I$withval")
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AC_ARG_WITH([$1libdir],
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AS_HELP_STRING([--with-$1libdir=DIR],
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[use $2 libraries from DIR]),
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[$2_LIBS="-L$withval"])])
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dnl === LIBCHECK_PROLOGUE([var_pfx])
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dnl === Caches the current values of CPPFLAGS/LIBS in SAVED_* then
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dnl === prepends the current values with <var_pfx>_{INCLUDES,LIBS}.
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AC_DEFUN([LIBCHECK_PROLOGUE],
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[SAVED_CPPFLAGS=$CPPFLAGS
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SAVED_LIBS=$LIBS
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CPPFLAGS="$$1_INCLUDES $CPPFLAGS"
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LIBS="$$1_LIBS $LIBS"])
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dnl === LIBCHECK_EPILOGUE([var_pfx])
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dnl === Restores the values of CPPFLAGS/LIBS from SAVED_* and exports
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dnl === <var_pfx>_{INCLUDES,LIBS} with AC_SUBST.
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AC_DEFUN([LIBCHECK_EPILOGUE],
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[AC_SUBST($1_LIBS)
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AC_SUBST($1_INCLUDES)
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CPPFLAGS=$SAVED_CPPFLAGS
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LIBS=$SAVED_LIBS])
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dnl === Check for gcc builtins
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dnl === CHECK_FOR_BUILTIN([builtin], [param], [define])
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dnl === links a C AC_LANG_PROGRAM, with <builtin>(<param>)
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dnl === AC_DEFINE'ing <define> if successful.
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AC_DEFUN([CHECK_FOR_BUILTIN],
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[AC_LANG_PUSH([C])
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AC_MSG_CHECKING([for $1])
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AC_LINK_IFELSE([AC_LANG_PROGRAM([], [(void)$1($2)])],
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[AC_MSG_RESULT([yes])
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AC_DEFINE([$3], [1],
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[Set to 1 if $1 is available])],
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[AC_MSG_RESULT([no])]),
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AC_LANG_POP])
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dnl AC_CHECK_FUNC doesn't work with builtin's.
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CHECK_FOR_BUILTIN([__builtin_bswap16], [1u << 15], [HAVE_BUILTIN_BSWAP16])
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CHECK_FOR_BUILTIN([__builtin_bswap32], [1u << 31], [HAVE_BUILTIN_BSWAP32])
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CHECK_FOR_BUILTIN([__builtin_bswap64], [1ull << 63], [HAVE_BUILTIN_BSWAP64])
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dnl === Check for pthread support
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AC_ARG_ENABLE([threading],
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AS_HELP_STRING([--disable-threading],
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[Disable detection of thread support]),,
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[enable_threading=yes])
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if test "$enable_threading" = "yes"; then
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AC_MSG_NOTICE([checking for threading support...])
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AX_PTHREAD([AC_DEFINE([WEBP_USE_THREAD], [1],
|
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[Undefine this to disable thread support.])
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LIBS="$PTHREAD_LIBS $LIBS"
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CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
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CC="$PTHREAD_CC"
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],
|
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[AC_CHECK_FUNC([_beginthreadex],
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[AC_DEFINE([WEBP_USE_THREAD], [1],
|
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[Undefine this to disable thread
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support.])],
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[enable_threading=no])])
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fi
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AC_MSG_NOTICE([checking if threading is enabled... ${enable_threading-no}])
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dnl === check for OpenGL/GLUT support ===
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AC_ARG_ENABLE([gl], AS_HELP_STRING([--disable-gl],
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[Disable detection of OpenGL support
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@<:@default=auto@:>@]))
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AS_IF([test "x$enable_gl" != "xno"], [
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CLEAR_LIBVARS([GL])
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WITHLIB_OPTION([gl], [GL])
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LIBCHECK_PROLOGUE([GL])
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glut_cflags="none"
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glut_ldflags="none"
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case $host_os in
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darwin*)
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# Special case for OSX builds. Append these to give the user a chance to
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# override with --with-gl*
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glut_cflags="$glut_cflags|-framework GLUT -framework OpenGL"
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glut_ldflags="$glut_ldflags|-framework GLUT -framework OpenGL"
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# quiet deprecation warnings for glut
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wno-deprecated-declarations])
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;;
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esac
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GLUT_SAVED_CPPFLAGS="$CPPFLAGS"
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SAVED_IFS="$IFS"
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IFS="|"
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for flag in $glut_cflags; do
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# restore IFS immediately as the autoconf macros may need the default.
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IFS="$SAVED_IFS"
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unset ac_cv_header_GL_glut_h
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unset ac_cv_header_OpenGL_glut_h
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case $flag in
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none) ;;
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*) CPPFLAGS="$flag $CPPFLAGS";;
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esac
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AC_CHECK_HEADERS([GL/glut.h GLUT/glut.h OpenGL/glut.h],
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[glut_headers=yes;
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test "$flag" = "none" || GL_INCLUDES="$CPPFLAGS";
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break])
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CPPFLAGS="$GLUT_SAVED_CPPFLAGS"
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test "$glut_headers" = "yes" && break
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done
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IFS="$SAVED_IFS"
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if test "$glut_headers" = "yes"; then
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AC_LANG_PUSH([C])
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GLUT_SAVED_LDFLAGS="$LDFLAGS"
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SAVED_IFS="$IFS"
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IFS="|"
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|
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 "$enable_libwebpdemux" = "yes"; then
|
|
build_vwebp=yes
|
|
else
|
|
AC_MSG_NOTICE(
|
|
m4_normalize([Not building vwebp.
|
|
OpenGL libraries and --enable-libwebpdemux are required.]))
|
|
fi
|
|
])
|
|
AM_CONDITIONAL([BUILD_VWEBP], [test "$build_vwebp" = "yes"])
|
|
|
|
dnl === check for SDL support ===
|
|
|
|
AC_ARG_ENABLE([sdl],
|
|
AS_HELP_STRING([--disable-sdl],
|
|
[Disable detection of SDL support
|
|
@<:@default=auto@:>@]))
|
|
AS_IF([test "x$enable_sdl" != "xno"], [
|
|
CLEAR_LIBVARS([SDL])
|
|
AC_PATH_PROGS([LIBSDL_CONFIG], [sdl2-config])
|
|
if test -n "$LIBSDL_CONFIG"; then
|
|
SDL_INCLUDES=`$LIBSDL_CONFIG --cflags`
|
|
SDL_LIBS="`$LIBSDL_CONFIG --libs`"
|
|
fi
|
|
|
|
WITHLIB_OPTION([sdl], [SDL])
|
|
|
|
sdl_header="no"
|
|
LIBCHECK_PROLOGUE([SDL])
|
|
AC_CHECK_HEADER([SDL2/SDL.h], [sdl_header="SDL2/SDL.h"],
|
|
[AC_MSG_WARN(SDL2 library not available - no SDL.h)])
|
|
if test x"$sdl_header" != "xno"; then
|
|
AC_LANG_PUSH(C)
|
|
SDL_SAVED_LIBS="$LIBS"
|
|
for lib in "" "-lSDL2" "-lSDL2main -lSDL2"; do
|
|
LIBS="$SDL_SAVED_LIBS $lib"
|
|
# Perform a full link to ensure SDL_main is resolved if needed.
|
|
AC_LINK_IFELSE(
|
|
[AC_LANG_SOURCE([
|
|
#include <$sdl_header>
|
|
int main(int argc, char** argv) {
|
|
SDL_Init(0);
|
|
return 0;
|
|
}])],
|
|
[SDL_LIBS="$LDFLAGS $LIBS"
|
|
SDL_INCLUDES="$SDL_INCLUDES -DWEBP_HAVE_SDL"
|
|
AC_DEFINE(WEBP_HAVE_SDL, [1],
|
|
[Set to 1 if SDL library is installed])
|
|
sdl_support=yes]
|
|
)
|
|
if test x"$sdl_support" = "xyes"; then
|
|
break
|
|
fi
|
|
done
|
|
# LIBS is restored by LIBCHECK_EPILOGUE
|
|
AC_LANG_POP
|
|
if test x"$sdl_header" = "xSDL.h"; then
|
|
SDL_INCLUDES="$SDL_INCLUDES -DWEBP_HAVE_JUST_SDL_H"
|
|
fi
|
|
fi
|
|
LIBCHECK_EPILOGUE([SDL])
|
|
|
|
if test x"$sdl_support" = "xyes"; then
|
|
build_vwebp_sdl=yes
|
|
else
|
|
AC_MSG_NOTICE([Not building vwebp-sdl. SDL library is required.])
|
|
fi
|
|
])
|
|
|
|
AM_CONDITIONAL([BUILD_VWEBP_SDL], [test "$build_vwebp_sdl" = "yes"])
|
|
|
|
dnl === check for PNG support ===
|
|
|
|
AC_ARG_ENABLE([png], AS_HELP_STRING([--disable-png],
|
|
[Disable detection of PNG format support
|
|
@<:@default=auto@:>@]))
|
|
AS_IF([test "x$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
|
|
build_anim_diff=yes
|
|
else
|
|
AC_MSG_NOTICE(
|
|
[Not building anim_diff. libgif and --enable-libwebpdemux are required.])
|
|
fi
|
|
|
|
if test "$gif_support" = "yes" -a \
|
|
"$enable_libwebpmux" = "yes"; then
|
|
build_gif2webp=yes
|
|
else
|
|
AC_MSG_NOTICE(
|
|
[Not building gif2webp. libgif and --enable-libwebpmux are required.])
|
|
fi
|
|
])
|
|
AM_CONDITIONAL([BUILD_ANIMDIFF], [test "${build_anim_diff}" = "yes"])
|
|
AM_CONDITIONAL([BUILD_GIF2WEBP], [test "${build_gif2webp}" = "yes"])
|
|
|
|
if test "$enable_libwebpdemux" = "yes" -a "$enable_libwebpmux" = "yes"; then
|
|
build_img2webp=yes
|
|
else
|
|
AC_MSG_NOTICE(
|
|
m4_normalize([Not building img2webp.
|
|
--enable-libwebpdemux & --enable-libwebpmux are required.]))
|
|
fi
|
|
AM_CONDITIONAL([BUILD_IMG2WEBP], [test "${build_img2webp}" = "yes"])
|
|
|
|
if test "$enable_libwebpmux" = "yes"; then
|
|
build_webpinfo=yes
|
|
else
|
|
AC_MSG_NOTICE([Not building webpinfo. --enable-libwebpdemux is required.])
|
|
fi
|
|
AM_CONDITIONAL([BUILD_WEBPINFO], [test "${build_webpinfo}" = "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-swap-16bit-csp is defined, add -DWEBP_SWAP_16BIT_CSP=1
|
|
|
|
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 "$enable_swap_16bit_csp" = "yes"; then
|
|
USE_SWAP_16BIT_CSP="-DWEBP_SWAP_16BIT_CSP=1"
|
|
fi
|
|
AC_MSG_RESULT(${enable_swap_16bit_csp-no})
|
|
AC_SUBST(USE_SWAP_16BIT_CSP)
|
|
|
|
dnl === If --disable-near-lossless is defined, add -DWEBP_NEAR_LOSSLESS=0
|
|
|
|
AC_DEFINE(WEBP_NEAR_LOSSLESS, [1], [Enable near lossless encoding])
|
|
AC_MSG_CHECKING(if --disable-near-lossless option is specified)
|
|
AC_ARG_ENABLE([near_lossless],
|
|
AS_HELP_STRING([--disable-near-lossless],
|
|
[Disable near lossless encoding]),
|
|
[], [enable_near_lossless=yes])
|
|
if test "$enable_near_lossless" = "no"; then
|
|
AC_DEFINE(WEBP_NEAR_LOSSLESS, [0], [Enable near lossless encoding])
|
|
AC_MSG_RESULT([yes])
|
|
else
|
|
AC_MSG_RESULT([no])
|
|
fi
|
|
|
|
dnl =========================
|
|
|
|
dnl Add an empty webp_libname_prefix variable for use in *.pc.in.
|
|
AC_SUBST([webp_libname_prefix])
|
|
AC_CONFIG_MACRO_DIR([m4])
|
|
AC_CONFIG_HEADERS([src/webp/config.h])
|
|
AC_CONFIG_FILES([Makefile src/Makefile man/Makefile \
|
|
examples/Makefile extras/Makefile imageio/Makefile \
|
|
sharpyuv/Makefile sharpyuv/libsharpyuv.pc \
|
|
src/dec/Makefile src/enc/Makefile src/dsp/Makefile \
|
|
src/demux/Makefile src/mux/Makefile \
|
|
src/utils/Makefile \
|
|
src/libwebp.pc src/libwebpdecoder.pc \
|
|
src/demux/libwebpdemux.pc src/mux/libwebpmux.pc])
|
|
|
|
dnl fix exports from MinGW builds
|
|
AC_CONFIG_COMMANDS_POST([$SED -i 's/-DDLL_EXPORT/-DWEBP_DLL/' config.status])
|
|
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 : ${enable_libwebpdemux-no}
|
|
Input format support
|
|
====================
|
|
JPEG : ${jpeg_support-no}
|
|
PNG : ${png_support-no}
|
|
TIFF : ${tiff_support-no}
|
|
WIC : ${wic_support-no}
|
|
dwebp : ${enable_libwebpdemux-no}
|
|
Output format support
|
|
=====================
|
|
PNG : ${png_support-no}
|
|
WIC : ${wic_support-no}
|
|
GIF support : ${gif_support-no}
|
|
anim_diff : ${build_anim_diff-no}
|
|
gif2webp : ${build_gif2webp-no}
|
|
img2webp : ${build_img2webp-no}
|
|
webpmux : ${enable_libwebpmux-no}
|
|
vwebp : ${build_vwebp-no}
|
|
webpinfo : ${build_webpinfo-no}
|
|
SDL support : ${sdl_support-no}
|
|
vwebp_sdl : ${build_vwebp_sdl-no}
|
|
])
|