File optipng-relax-libpng-version-requirement.patch of Package optipng.18195

Index: optipng-0.7.8/configure
===================================================================
--- optipng-0.7.8.orig/configure
+++ optipng-0.7.8/configure
@@ -220,8 +220,8 @@ then
     test=conftest$$
 cat > $test.c <<EOM
 #include <png.h>
-#if PNG_LIBPNG_VER < 10635
-#error This program requires libpng version 1.6.35 or higher
+#if PNG_LIBPNG_VER < 10634
+#error This program requires libpng version 1.6.34 or higher
 #endif
 int dummy;
 EOM
@@ -231,7 +231,7 @@ EOM
     if test $status -ne 0
     then
         echo "$0: error: missing libpng or incorrect libpng version"
-        echo "$0: note: libpng version 1.6.35 or higher is required"
+        echo "$0: note: libpng version 1.6.34 or higher is required"
         exit 1
     fi
 else