- AC_MSG_RESULT([ *** PNG Output target disabled])
- TARGET_PNG="no"
- AM_CONDITIONAL(HAVE_LIBPNG,false)
-],[-lz])
+ AC_CHECK_LIB(png12, png_write_row,[
+ PNG_LIBS="-lpng12"
+ AC_DEFINE(HAVE_LIBPNG,[])
+ AC_SUBST(PNG_LIBS)
+ AM_CONDITIONAL(HAVE_LIBPNG,true)
+ ],[
+ AC_MSG_RESULT([ *** PNG Output target disabled])
+ TARGET_PNG="no"
+ AM_CONDITIONAL(HAVE_LIBPNG,false)
+ ],[-lz -L${exec_prefix}/lib])
+],[-lz -L${exec_prefix}/lib])