configure.ac: make sure local-png and local-zlib always run together
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ManoloFLTK
parent
788523be6f
commit
c59c400a76
191
configure.ac
191
configure.ac
@ -646,136 +646,153 @@ AC_SUBST(STATICIMAGELIBS)
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# Handle the JPEG lib linking mode (use fltk local or system lib)
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# If --enable-(resp. --disable-)localjpeg parameter is not set by user
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# Then we check the JPEG lib usability, with result in sysjpeglib_ok variable
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AC_ARG_ENABLE(localjpeg, [ --enable-localjpeg use local JPEG library [[default=auto]]])
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# Handle the ZLIB lib linking mode (use fltk local or system lib)
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# If --enable-(resp. --disable-)localzlib parameter is not set by user
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AC_ARG_ENABLE(localzlib, [ --enable-localzlib use local ZLIB library [[default=auto]]])
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# Handle the PNG lib linking mode (use fltk local or system lib)
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# If --enable-(resp. --disable-)localpng parameter is not set by user
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AC_ARG_ENABLE(localpng, [ --enable-localpng use local PNG library [[default=auto]]])
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# Then we check the JPEG lib usability, with result in sysjpeglib_ok variable
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# Check for System lib use if automatic mode or --disable-localjpeg is requested
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sysjpeglib_ok=no
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sysjpeginc_ok=no
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if test x$enable_localjpeg != xyes; then
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AC_CHECK_LIB(jpeg,jpeg_CreateCompress,
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[AC_CHECK_HEADER(jpeglib.h,
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sysjpeginc_ok=yes)
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if test x$sysjpeginc_ok = xyes; then
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sysjpeglib_ok=yes
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fi])
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fi
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AS_IF([test x$enable_localjpeg != xyes], [
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AC_CHECK_LIB([jpeg], [jpeg_CreateCompress], [
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AC_CHECK_HEADER([jpeglib.h], [sysjpeginc_ok=yes])
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AS_IF([test x$sysjpeginc_ok = xyes], [
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sysjpeglib_ok=yes
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])
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])
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])
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# Now set the jpeg lib and include flags according to the requested mode and availability
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if test x$enable_localjpeg = xyes -o x$sysjpeglib_ok = xno; then
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AS_IF([test x$enable_localjpeg = xyes -o x$sysjpeglib_ok = xno], [
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JPEGINC="-I../jpeg"
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JPEG="jpeg"
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IMAGELIBS="-lfltk_jpeg $IMAGELIBS"
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STATICIMAGELIBS="\$libdir/libfltk_jpeg.a $STATICIMAGELIBS"
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AC_DEFINE(HAVE_LIBJPEG)
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#ac_cv_lib_jpeg_jpeg_CreateCompress=no # from ima: should not be necessary
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AC_DEFINE([HAVE_LIBJPEG])
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# Finally, warn user if system lib was requested but not found
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if test x$enable_localjpeg = xno; then
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AC_MSG_WARN([Cannot find system jpeg lib or header: choosing the local lib mode.])
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fi
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else
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AS_IF([test x$enable_localjpeg = xno], [
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AC_MSG_WARN([Cannot find system jpeg lib or header: choosing the local lib mode.])
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])
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], [
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JPEGINC=""
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JPEG=""
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IMAGELIBS="-ljpeg $IMAGELIBS"
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STATICIMAGELIBS="-ljpeg $STATICIMAGELIBS"
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AC_DEFINE(HAVE_LIBJPEG)
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fi
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AC_DEFINE([HAVE_LIBJPEG])
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])
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# Handle the ZLIB lib linking mode (use fltk local or system lib)
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# If --enable-(resp. --disable-)localzlib parameter is not set by user
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# Then we check the ZLIB lib usability, with result in syszlib_ok variable
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AC_ARG_ENABLE(localzlib, [ --enable-localzlib use local ZLIB library [[default=auto]]])
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# Check for System lib use if automatic mode or --disable-localzlib is requested
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syszlib_ok=no
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syszinc_ok=no
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if test x$enable_localzlib != xyes; then
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AC_CHECK_LIB(z,gzgets,
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[AC_CHECK_HEADER(zlib.h,
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syszinc_ok=yes)
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if test x$syszinc_ok = xyes; then
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syszlib_ok=yes
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fi])
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fi
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case "$host_os" in
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darwin*)
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# macOS: enforce local zlib when local libpng is active
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if test x$syszlib_ok = xyes -a x$enable_localpng != xno; then
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syszlib_ok=no
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fi
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;;
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esac
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AS_IF([test x$enable_localzlib != xyes], [
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AC_CHECK_LIB([z], [gzgets], [
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AC_CHECK_HEADER([zlib.h], [syszinc_ok=yes])
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AS_IF([test x$syszinc_ok = xyes], [
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syszlib_ok=yes
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])
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])
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])
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# Then we check the png lib usability with result in syspng_lib variable
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# Now check if system lib is usable, we check Lib AND include availability with inc variant,
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# but only, if the builtin lib is not requested
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syspnglib_ok=no
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syspnginc_ok=no
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AS_IF([test x$enable_localpng != xyes], [
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AC_CHECK_LIB([png], [png_read_info], [
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AC_CHECK_HEADER([png.h], [
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AC_DEFINE([HAVE_PNG_H])
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syspnginc_ok=yes
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])
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AC_CHECK_HEADER([libpng/png.h], [
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syspnginc_ok=yes
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])
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AS_IF([test x$syspnginc_ok = xyes], [
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syspnglib_ok=yes
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])
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])
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])
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# If we use the system zlib, we must also use the system png lib and vice versa.
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# If either of them is not available, we fall back to using both local libraries
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AS_IF([test x$syspnglib_ok = xyes -a x$syszlib_ok != xyes], [
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syspnglib_ok=no
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enable_localpng=yes
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AC_MSG_WARN([Local z lib selected: overriding png lib to local for compatibility.])
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])
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AS_IF([test x$syszlib_ok = xyes -a x$syspnglib_ok != xyes], [
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syszlib_ok=no
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enable_localzlib=yes
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AC_MSG_WARN([Local png lib selected: overriding z lib to local for compatibility.])
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])
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# Now set the Z lib and include flags according to the requested mode and availability
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if test x$enable_localzlib = xyes -o x$syszlib_ok = xno ; then
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AS_IF([test x$enable_localzlib = xyes -o x$syszlib_ok = xno], [
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ZLIBINC="-I../zlib"
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ZLIB="zlib"
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LIBS="-lfltk_z $LIBS"
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IMAGELIBS="-lfltk_z $IMAGELIBS"
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STATICIMAGELIBS="\$libdir/libfltk_z.a $STATICIMAGELIBS"
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AC_DEFINE(HAVE_LIBZ)
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AC_DEFINE([HAVE_LIBZ])
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ac_cv_lib_z_gzgets=no # fc: is still necessary ?
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# Finally, warn user if system lib was requested but not found
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if test x$enable_localzlib = xno; then
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AC_MSG_WARN([Cannot find system z lib or header: choosing the local lib mode.])
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fi
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else
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AS_IF([test x$enable_localzlib = xno], [
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AC_MSG_WARN([Cannot find system z lib or header: choosing the local lib mode.])
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])
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], [
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ZLIBINC=""
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ZLIB=""
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LIBS="-lz $LIBS"
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IMAGELIBS="-lz $IMAGELIBS"
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STATICIMAGELIBS="-lz $STATICIMAGELIBS"
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AC_DEFINE(HAVE_LIBZ)
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fi
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AC_DEFINE([HAVE_LIBZ])
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])
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# Handle the PNG lib linking mode (use fltk local or system lib)
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# If --enable-(resp. --disable-)localpng parameter is not set by user
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# Then we check the png lib usability with result in syspng_lib variable
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AC_ARG_ENABLE(localpng, [ --enable-localpng use local PNG library [[default=auto]]])
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# Now check if system lib is usable, we check Lib AND include availability with inc variant,
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# but only, if the builtin lib is not requested
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syspnglib_ok=no
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syspnginc_ok=no
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if test x$enable_localpng != xyes; then
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AC_CHECK_LIB(png, png_read_info,
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[AC_CHECK_HEADER(png.h,
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AC_DEFINE(HAVE_PNG_H)
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syspnginc_ok=yes)
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AC_CHECK_HEADER(libpng/png.h,
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AC_DEFINE(HAVE_LIBPNG_PNG_H)
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syspnginc_ok=yes)
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if test x$syspnginc_ok = xyes; then
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syspnglib_ok=yes
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fi])
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fi
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# The following is executed if the lib was not found usable or if local lib is required explicitly
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if test x$enable_localpng = xyes -o x$syspnglib_ok = xno ; then
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# The following is executed if the png lib was not found usable or if local lib is required explicitly
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AS_IF([test x$enable_localpng = xyes -o x$syspnglib_ok = xno], [
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PNGINC="-I../png"
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PNG="png"
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IMAGELIBS="-lfltk_png $IMAGELIBS"
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STATICIMAGELIBS="\$libdir/libfltk_png.a $STATICIMAGELIBS"
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AC_DEFINE(HAVE_LIBPNG)
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AC_DEFINE(HAVE_PNG_H)
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AC_DEFINE(HAVE_PNG_GET_VALID)
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AC_DEFINE(HAVE_PNG_SET_TRNS_TO_ALPHA)
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AC_DEFINE([HAVE_LIBPNG])
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AC_DEFINE([HAVE_PNG_H])
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AC_DEFINE([HAVE_PNG_GET_VALID])
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AC_DEFINE([HAVE_PNG_SET_TRNS_TO_ALPHA])
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# Finally, warn user if system lib was requested but not found
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if test x$enable_localpng = xno; then
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AC_MSG_WARN([Cannot find system png lib or header: choosing the local lib mode.])
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fi
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else
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AS_IF([test x$enable_localpng = xno], [
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AC_MSG_WARN([Cannot find system png lib or header: choosing the local lib mode.])
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])
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], [
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PNGINC=""
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PNG=""
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IMAGELIBS="-lpng $IMAGELIBS"
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STATICIMAGELIBS="-lpng $STATICIMAGELIBS"
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AC_DEFINE(HAVE_LIBPNG)
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AC_CHECK_LIB(png,png_get_valid, AC_DEFINE(HAVE_PNG_GET_VALID))
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AC_CHECK_LIB(png,png_set_tRNS_to_alpha, AC_DEFINE(HAVE_PNG_SET_TRNS_TO_ALPHA))
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fi
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AC_DEFINE([HAVE_LIBPNG])
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AC_CHECK_LIB([png], [png_get_valid], [
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AC_DEFINE([HAVE_PNG_GET_VALID])
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])
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AC_CHECK_LIB([png], [png_set_tRNS_to_alpha], [
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AC_DEFINE([HAVE_PNG_SET_TRNS_TO_ALPHA])
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])
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])
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AC_SUBST(JPEG)
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AC_SUBST(JPEGINC)
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AC_SUBST(PNG)
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AC_SUBST(PNGINC)
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AC_SUBST(ZLIB)
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AC_SUBST(ZLIBINC)
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AC_SUBST([JPEG])
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AC_SUBST([JPEGINC])
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AC_SUBST([PNG])
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AC_SUBST([PNGINC])
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AC_SUBST([HAVE_PNG_H])
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AC_SUBST([ZLIB])
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AC_SUBST([ZLIBINC])
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dnl Restore original LIBS settings...
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LIBS="$SAVELIBS"
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