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-rw-r--r--ext/digest/sha2/extconf.rb8
1 files changed, 8 insertions, 0 deletions
diff --git a/ext/digest/sha2/extconf.rb b/ext/digest/sha2/extconf.rb
index fcbc1ddd8be..144f266b20e 100644
--- a/ext/digest/sha2/extconf.rb
+++ b/ext/digest/sha2/extconf.rb
@@ -17,4 +17,12 @@ have_header("inttypes.h")
have_header("unistd.h")
+unless try_link(<<SRC, $defs.join(' '))
+#include "../defs.h"
+main(){}
+SRC
+ puts "** Cannot find a 64bit integer type - skipping the SHA2 module."
+ exit 1
+end
+
create_makefile("digest/sha2")