493 lines
16 KiB
Plaintext
493 lines
16 KiB
Plaintext
AC_INIT([libwebp], [0.4.0],
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[http://code.google.com/p/webp/issues],,
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[http://developers.google.com/speed/webp])
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AC_CANONICAL_TARGET
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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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AC_PROG_LIBTOOL
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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 === 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=$2])
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AC_ARG_ENABLE([everything],
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AS_HELP_STRING([--enable-everything],
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[Enable all optional targets. These can still be
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disabled with --disable-target]),
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[SET_IF_UNSET([enable_libwebpdecoder], [$enableval])
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SET_IF_UNSET([enable_libwebpdemux], [$enableval])
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SET_IF_UNSET([enable_libwebpmux], [$enableval])])
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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], [-Wall])
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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], [-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], [-Wshadow])
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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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AC_SUBST([AM_CFLAGS])
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TEST_AND_ADD_CFLAGS([AVX2_FLAGS], [-mavx2])
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AC_SUBST([AVX2_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=$SAVED_LIBS])
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dnl === Check for pthread support
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AC_ARG_ENABLE([threading],
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AS_HELP_STRING([--disable-threading],
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[Disable detection of thread support]),,
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[enable_threading=yes])
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if test "$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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[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="$glut_ldflags|-framework GLUT -framework OpenGL"
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;;
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esac
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GLUT_SAVED_CPPFLAGS="$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 $glut_ldflags; do
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# restore IFS immediately as the autoconf macros may need the default.
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IFS="$SAVED_IFS"
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unset ac_cv_search_glBegin
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case $flag in
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none) ;;
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*) LDFLAGS="$flag $LDFLAGS";;
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esac
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# find libGL
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GL_SAVED_LIBS="$LIBS"
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AC_SEARCH_LIBS([glBegin], [GL OpenGL])
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LIBS="$GL_SAVED_LIBS"
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# A direct link to libGL may not be necessary on e.g., linux.
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GLUT_SAVED_LIBS="$LIBS"
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for lib in "" "-lglut" "-lglut $ac_cv_search_glBegin"; do
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LIBS="$lib"
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AC_LINK_IFELSE(
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[AC_LANG_PROGRAM([
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#ifdef __cplusplus
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# define EXTERN_C extern "C"
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#else
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# define EXTERN_C
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#endif
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EXTERN_C char glOrtho();
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EXTERN_C char glutMainLoop();
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],[
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glOrtho();
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glutMainLoop();
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])
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],
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AC_DEFINE(WEBP_HAVE_GL, [1],
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[Set to 1 if OpenGL is supported])
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[glut_support=yes], []
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)
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if test "$glut_support" = "yes"; then
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GL_LIBS="$LDFLAGS $lib"
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break
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fi
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done
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LIBS="$GLUT_SAVED_LIBS"
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LDFLAGS="$GLUT_SAVED_LDFLAGS"
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test "$glut_support" = "yes" && break
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done
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IFS="$SAVED_IFS"
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AC_LANG_POP
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fi
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LIBCHECK_EPILOGUE([GL])
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if test "$glut_support" = "yes" -a "$enable_libwebpdemux" = "yes"; then
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build_vwebp=yes
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fi
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])
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AM_CONDITIONAL([BUILD_VWEBP], [test "$build_vwebp" = "yes"])
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dnl === check for PNG support ===
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AC_ARG_ENABLE([png], AS_HELP_STRING([--disable-png],
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[Disable detection of PNG format support
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@<:@default=auto@:>@]))
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AS_IF([test "x$enable_png" != "xno"], [
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CLEAR_LIBVARS([PNG])
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AC_PATH_PROGS(LIBPNG_CONFIG,
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[libpng-config libpng15-config libpng14-config libpng12-config])
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if test -n "$LIBPNG_CONFIG"; then
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PNG_INCLUDES=`$LIBPNG_CONFIG --cflags`
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PNG_PREFIX=`$LIBPNG_CONFIG --prefix`
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if test "${PNG_PREFIX}/lib" != "/usr/lib" ; then
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PNG_LIBS="-L${PNG_PREFIX}/lib"
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fi
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PNG_LIBS="$PNG_LIBS `$LIBPNG_CONFIG --libs`"
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fi
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WITHLIB_OPTION([png], [PNG])
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LIBCHECK_PROLOGUE([PNG])
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AC_CHECK_HEADER(png.h,
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AC_SEARCH_LIBS(png_get_libpng_ver, [png],
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[test "$ac_cv_search_png_get_libpng_ver" = "none required" \
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|| PNG_LIBS="$PNG_LIBS $ac_cv_search_png_get_libpng_ver"
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PNG_INCLUDES="$PNG_INCLUDES -DWEBP_HAVE_PNG"
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AC_DEFINE(WEBP_HAVE_PNG, [1],
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[Set to 1 if PNG library is installed])
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png_support=yes
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],
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[AC_MSG_WARN(Optional png library not found)
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PNG_LIBS=""
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PNG_INCLUDES=""
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],
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[$MATH_LIBS]),
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[AC_MSG_WARN(png library not available - no png.h)
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PNG_LIBS=""
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PNG_INCLUDES=""
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],
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)
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LIBCHECK_EPILOGUE([PNG])
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])
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dnl === check for JPEG support ===
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AC_ARG_ENABLE([jpeg],
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AS_HELP_STRING([--disable-jpeg],
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[Disable detection of JPEG format support
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@<:@default=auto@:>@]))
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AS_IF([test "x$enable_jpeg" != "xno"], [
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CLEAR_LIBVARS([JPEG])
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WITHLIB_OPTION([jpeg], [JPEG])
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LIBCHECK_PROLOGUE([JPEG])
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AC_CHECK_HEADER(jpeglib.h,
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AC_CHECK_LIB(jpeg, jpeg_set_defaults,
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[JPEG_LIBS="$JPEG_LIBS -ljpeg"
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JPEG_INCLUDES="$JPEG_INCLUDES -DWEBP_HAVE_JPEG"
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AC_DEFINE(WEBP_HAVE_JPEG, [1],
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[Set to 1 if JPEG library is installed])
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jpeg_support=yes
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],
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AC_MSG_WARN(Optional jpeg library not found),
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[$MATH_LIBS]),
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AC_MSG_WARN(jpeg library not available - no jpeglib.h)
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)
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LIBCHECK_EPILOGUE([JPEG])
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])
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dnl === check for TIFF support ===
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AC_ARG_ENABLE([tiff],
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AS_HELP_STRING([--disable-tiff],
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[Disable detection of TIFF format support
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@<:@default=auto@:>@]))
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AS_IF([test "x$enable_tiff" != "xno"], [
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CLEAR_LIBVARS([TIFF])
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WITHLIB_OPTION([tiff], [TIFF])
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LIBCHECK_PROLOGUE([TIFF])
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AC_CHECK_HEADER(tiffio.h,
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AC_CHECK_LIB(tiff, TIFFGetVersion,
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[TIFF_LIBS="$TIFF_LIBS -ltiff"
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TIFF_INCLUDES="$TIFF_INCLUDES -DWEBP_HAVE_TIFF"
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AC_DEFINE(WEBP_HAVE_TIFF, [1],
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[Set to 1 if TIFF library is installed])
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tiff_support=yes
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],
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AC_MSG_WARN(Optional tiff library not found),
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[$MATH_LIBS]),
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AC_MSG_WARN(tiff library not available - no tiffio.h)
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)
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LIBCHECK_EPILOGUE([TIFF])
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])
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dnl === check for GIF support ===
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AC_ARG_ENABLE([gif], AS_HELP_STRING([--disable-gif],
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[Disable detection of GIF format support
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@<:@default=auto@:>@]))
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AS_IF([test "x$enable_gif" != "xno"], [
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CLEAR_LIBVARS([GIF])
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WITHLIB_OPTION([gif], [GIF])
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LIBCHECK_PROLOGUE([GIF])
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AC_CHECK_HEADER(gif_lib.h,
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AC_CHECK_LIB([gif], [DGifOpenFileHandle],
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[GIF_LIBS="$GIF_LIBS -lgif"
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AC_DEFINE(WEBP_HAVE_GIF, [1],
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[Set to 1 if GIF library is installed])
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gif_support=yes
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],
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AC_MSG_WARN(Optional gif library not found),
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[$MATH_LIBS]),
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AC_MSG_WARN(gif library not available - no gif_lib.h)
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)
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LIBCHECK_EPILOGUE([GIF])
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if test "$gif_support" = "yes" -a \
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"$enable_libwebpmux" = "yes"; then
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build_gif2webp=yes
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fi
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])
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AM_CONDITIONAL([BUILD_GIF2WEBP], [test "${build_gif2webp}" = "yes"])
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dnl === check for WIC support ===
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AC_ARG_ENABLE([wic],
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AS_HELP_STRING([--disable-wic],
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[Disable Windows Imaging Component (WIC) detection.
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@<:@default=auto@:>@]),,
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[enable_wic=yes])
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if test "$target_os" = "mingw32" -a "$enable_wic" = "yes"; then
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AC_CHECK_HEADERS([wincodec.h shlwapi.h windows.h])
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if test "$ac_cv_header_wincodec_h" = "yes"; then
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AC_MSG_CHECKING(for Windows Imaging Component support)
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SAVED_LIBS=$LIBS
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LIBS="-lshlwapi -lole32 $LIBS"
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# match include structure from [cd]webp.c
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wic_headers="
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#define INITGUID
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#define CINTERFACE
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#define COBJMACROS
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#define _WIN32_IE 0x500
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#include <shlwapi.h>
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#include <windows.h>
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#include <wincodec.h>
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"
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# test for functions from each lib and the GUID is created properly
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wic_main="
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int main(void) {
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CLSID_WICImagingFactory;
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CoInitialize(NULL);
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SHCreateStreamOnFile(NULL, 0, NULL);
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return 0;
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}
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"
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AC_LANG_PUSH(C)
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AC_LINK_IFELSE(
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[AC_LANG_SOURCE([
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$wic_headers
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$wic_main])],
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[wic_support=yes],
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|
[wic_support=no]
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)
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AC_LANG_POP
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test "$wic_support" = "yes" || LIBS=$SAVED_LIBS
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AC_MSG_RESULT(${wic_support-no})
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fi
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fi
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dnl === If --enable-swap-16bit-csp is defined, add -DWEBP_SWAP_16BIT_CSP
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USE_SWAP_16BIT_CSP=""
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AC_MSG_CHECKING(if --enable-swap-16bit-csp option is specified)
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AC_ARG_ENABLE([swap-16bit-csp],
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|
AS_HELP_STRING([--enable-swap-16bit-csp],
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|
[Enable byte swap for 16 bit colorspaces]))
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|
if test "$enable_swap_16bit_csp" = "yes"; then
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USE_SWAP_16BIT_CSP="-DWEBP_SWAP_16BIT_CSP"
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fi
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AC_MSG_RESULT(${enable_swap_16bit_csp-no})
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AC_SUBST(USE_SWAP_16BIT_CSP)
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dnl === If --enable-experimental is defined, add -DWEBP_EXPERIMENTAL_FEATURES
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USE_EXPERIMENTAL_CODE=""
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AC_MSG_CHECKING(if --enable-experimental option is specified)
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AC_ARG_ENABLE([experimental], AS_HELP_STRING([--enable-experimental],
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|
[Activate experimental features]))
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|
if test "$enable_experimental" = "yes"; then
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AC_DEFINE(WEBP_EXPERIMENTAL_FEATURES, [1], [Enable experimental code])
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USE_EXPERIMENTAL_CODE="-DWEBP_EXPERIMENTAL_FEATURES"
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fi
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AC_MSG_RESULT(${enable_experimental-no})
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AC_SUBST(USE_EXPERIMENTAL_CODE)
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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([--enable-libwebpmux],
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|
[Build libwebpmux @<:@default=no@:>@]))
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AC_MSG_RESULT(${enable_libwebpmux-no})
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AM_CONDITIONAL([WANT_MUX], [test "$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([--enable-libwebpdemux],
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|
[Build libwebpdemux @<:@default=no@:>@]))
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AC_MSG_RESULT(${enable_libwebpdemux-no})
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AM_CONDITIONAL([WANT_DEMUX], [test "$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"])
|
|
|
|
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 src/libwebpdecoder.pc \
|
|
src/demux/libwebpdemux.pc src/mux/libwebpmux.pc])
|
|
|
|
|
|
AC_OUTPUT
|
|
|
|
AC_MSG_NOTICE([
|
|
WebP Configuration Summary
|
|
--------------------------
|
|
|
|
Shared libraries: ${enable_shared}
|
|
Static libraries: ${enable_static}
|
|
Threaded decode: ${enable_threading-no}
|
|
libwebp: yes
|
|
libwebpdecoder: ${enable_libwebpdecoder-no}
|
|
libwebpdemux: ${enable_libwebpdemux-no}
|
|
libwebpmux: ${enable_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}
|
|
GIF support : ${gif_support-no}
|
|
gif2webp : ${build_gif2webp-no}
|
|
webpmux : ${enable_libwebpmux-no}
|
|
vwebp : ${build_vwebp-no}
|
|
])
|