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-rwxr-xr-xtest/png-roundtrip2.test4
1 files changed, 4 insertions, 0 deletions
diff --git a/test/png-roundtrip2.test b/test/png-roundtrip2.test
index af2ad029..b48bbf91 100755
--- a/test/png-roundtrip2.test
+++ b/test/png-roundtrip2.test
@@ -9,6 +9,10 @@
 ## If both tests fail, the likely cause is a problem with pngtopam.
 ## It is also possible that there is some problem in libpng.
 
+if [ "${PNGLIB}" = "NONE" ]; then
+  exit 80
+fi
+
 # Test 1.  Should print 1926073387 101484 twice
 for flags in "" -gamma=.45
   do