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-rw-r--r--include/features.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/features.h b/include/features.h
index 2e16874792..a34e26f52c 100644
--- a/include/features.h
+++ b/include/features.h
@@ -277,6 +277,14 @@
 #define __GLIBC_PREREQ(maj, min) \
 	((__GLIBC__ << 16) + __GLIBC_MINOR__ >= ((maj) << 16) + (min))
 
+/* Decide whether a compiler supports the long long datatypes.  */
+#if defined __GNUC__ \
+    || (defined __PGI && defined __i386__ ) \
+    || (defined __INTEL_COMPILER && (defined __i386__ || defined __ia64__)) \
+    || (defined __STDC_VERSION && __STDC_VERSION >= 199901L)
+# define __GLIBC_HAVE_LONG_LONG	1
+#endif
+
 /* This is here only because every header file already includes this one.  */
 #ifndef __ASSEMBLER__
 # ifndef _SYS_CDEFS_H