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-rw-r--r--Utilities/cmlibarchive/libarchive/archive_windows.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/Utilities/cmlibarchive/libarchive/archive_windows.h b/Utilities/cmlibarchive/libarchive/archive_windows.h
index dc2f24139c..7c31a16916 100644
--- a/Utilities/cmlibarchive/libarchive/archive_windows.h
+++ b/Utilities/cmlibarchive/libarchive/archive_windows.h
@@ -227,7 +227,9 @@
#define S_IRWXG _S_IRWXG
#define S_IXGRP _S_IXGRP
#define S_IWGRP _S_IWGRP
+#ifndef S_IRGRP
#define S_IRGRP _S_IRGRP
+#endif
#define S_IRWXO _S_IRWXO
#define S_IXOTH _S_IXOTH
#define S_IWOTH _S_IWOTH