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-rw-r--r--include/features.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/features.h b/include/features.h
index 4a1066531..d6e45c2ff 100644
--- a/include/features.h
+++ b/include/features.h
@@ -139,6 +139,9 @@
# define __GNUC_PREREQ(maj, min) 0
#endif
+/* Whether to use feature set F. */
+#define __GLIBC_USE(F) __GLIBC_USE_ ## F
+
/* _DEFAULT_SOURCE is equivalent to defining _BSD_SOURCE and _SVID_SOURCE
* and vice versa. */
#ifdef _DEFAULT_SOURCE