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-rw-r--r--include/ruby/internal/abi.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/ruby/internal/abi.h b/include/ruby/internal/abi.h
index 98a63927c5..ed779f3558 100644
--- a/include/ruby/internal/abi.h
+++ b/include/ruby/internal/abi.h
@@ -26,7 +26,7 @@
/* Windows does not support weak symbols so ruby_abi_version will not exist
* in the shared library. */
-#if defined(HAVE_FUNC_WEAK) && !defined(_WIN32) && !defined(__MINGW32__)
+#if defined(HAVE_FUNC_WEAK) && !defined(_WIN32) && !defined(__MINGW32__) && !defined(__CYGWIN__)
# define RUBY_DLN_CHECK_ABI
#endif