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FROGGS / Alien-SDL-1.440 / patches / SDL_image-1.2.11-libpng-flags.patch 
--- SDL_image-1.2.11/configure	2012-01-06 05:12:29.000000000 +0100
+++ SDL_image-1.2.11/configure	2012-01-06 10:06:05.000000000 +0100
@@ -13875,7 +13875,7 @@
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
   ac_check_lib_save_LIBS=$LIBS
-LIBS="-lpng -lz $LIBS"
+LIBS="$LIBPNG_LIBS -lz $LIBS"
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
@@ -14072,7 +14072,7 @@
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
   ac_check_lib_save_LIBS=$LIBS
-LIBS="-lpng -lz $LIBS"
+LIBS="$LIBPNG_LIBS -lz $LIBS"
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
@@ -15008,7 +15008,7 @@
 _ACEOF
 
     else
-        IMG_LIBS="-lpng -lz $IMG_LIBS"
+        IMG_LIBS="$LIBPNG_LIBS -lz $IMG_LIBS"
     fi
 fi