From db3f10e93b5c4c804d9f2127ab7697fb0638cc2f Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Sun, 20 Dec 2015 05:39:39 +0200
Subject: Detect Clang that pretends to be very old GCC

On FreeBSD, Clang 3.7 says it is GCC 4.2. Go figure.
---
 odb/details/config.hxx | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/odb/details/config.hxx b/odb/details/config.hxx
index c8f6239..c36b163 100644
--- a/odb/details/config.hxx
+++ b/odb/details/config.hxx
@@ -27,7 +27,9 @@
 #  include <odb/details/config.h>
 #  if defined(__GXX_EXPERIMENTAL_CXX0X__) || __cplusplus >= 201103L
 #    define ODB_CXX11
-#    ifdef __GNUC__
+#    ifdef __clang__ // Pretends to be a really old __GNUC__ on some platforms.
+#      define ODB_CXX11_NULLPTR
+#    elif defined(__GNUC__)
 #      if (__GNUC__ == 4 && __GNUC_MINOR__ >= 6) || __GNUC__ > 4
 #        define ODB_CXX11_NULLPTR
 #      endif
-- 
cgit v1.1