diff options
| -rw-r--r-- | configure.in | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/configure.in b/configure.in index 12847316b..b1d44f72c 100644 --- a/configure.in +++ b/configure.in @@ -581,10 +581,12 @@ AC_CHECK_LIB(z,gzgets, # Then we check the png lib usability with result in syspng_lib variable AC_ARG_ENABLE(localpng, [ --enable-localpng use local PNG library, default=auto]) -# Now check if system lib is usable, we check Lib AND include availability with inc variant +# Now check if system lib is usable, we check Lib AND include availability with inc variant, +# but only, if the builtin lib is not requested syspnglib_ok=no syspnginc_ok=no -AC_CHECK_LIB(png, png_read_info, +if test x$enable_localpng != xyes ; then + AC_CHECK_LIB(png, png_read_info, [AC_CHECK_HEADER(png.h, AC_DEFINE(HAVE_PNG_H) syspnginc_ok=yes) @@ -596,11 +598,12 @@ AC_CHECK_LIB(png, png_read_info, else syspnglib_ok=no fi]) +fi #AC_MSG_WARN("*** USING LIB OK : $syspnglib_ok") # The following is executed if the lib was not found usable or if local lib is required explicitly if test x$enable_localpng = xyes -o x$syspnglib_ok = xno ; then - ac_cv_lib_png_png_set_tRNS_to_alpha=yes +# ac_cv_lib_png_png_set_tRNS_to_alpha=yes AC_DEFINE(HAVE_LIBPNG) AC_DEFINE(HAVE_PNG_H) AC_DEFINE(HAVE_PNG_GET_VALID) @@ -614,7 +617,7 @@ else PNG="" IMAGELIBS="-lpng $IMAGELIBS" AC_DEFINE(HAVE_LIBPNG) - AC_DEFINE(HAVE_PNG_GET_VALID) + AC_CHECK_LIB(png,png_get_valid, AC_DEFINE(HAVE_PNG_GET_VALID)) AC_CHECK_LIB(png,png_set_tRNS_to_alpha, AC_DEFINE(HAVE_PNG_SET_TRNS_TO_ALPHA)) # AC_MSG_WARN("*** USING PNG LIB SETUP") fi |