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-rw-r--r--src/H5config.h.in3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/H5config.h.in b/src/H5config.h.in
index 8210f38..08b51b3 100644
--- a/src/H5config.h.in
+++ b/src/H5config.h.in
@@ -17,6 +17,9 @@
/* Define if C++ compiler recognizes offsetof */
#undef CXX_HAVE_OFFSETOF
+/* Define a macro for Cygwin system */
+#undef CYGWIN
+
/* Define the default virtual file driver to compile */
#undef DEFAULT_VFD