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-rw-r--r--ext/digest/sha2/extconf.rb4
1 files changed, 0 insertions, 4 deletions
diff --git a/ext/digest/sha2/extconf.rb b/ext/digest/sha2/extconf.rb
index c084a51a642..c15043f1134 100644
--- a/ext/digest/sha2/extconf.rb
+++ b/ext/digest/sha2/extconf.rb
@@ -13,10 +13,6 @@ $objs = [
have_header("sys/cdefs.h")
-have_header("inttypes.h")
-
-have_header("unistd.h")
-
$preload = %w[digest]
if have_type("uint64_t", "defs.h", $defs.join(' '))