From b3ca4bccc4fa6b7f5d637bdecb4fac6ca9649f3c Mon Sep 17 00:00:00 2001
From: Ben Longbons <b.r.longbons@gmail.com>
Date: Fri, 1 Feb 2013 12:36:09 -0800
Subject: Fix build with clang against libstdc++ 4.6

---
 src/common/const_array.hpp |  4 ++--
 src/common/sanity.hpp      | 43 ++++++++++++++++++++++++++++++-------------
 2 files changed, 32 insertions(+), 15 deletions(-)

(limited to 'src/common')

diff --git a/src/common/const_array.hpp b/src/common/const_array.hpp
index eb0da58..db8416d 100644
--- a/src/common/const_array.hpp
+++ b/src/common/const_array.hpp
@@ -28,7 +28,7 @@
 #include <string>
 #include <vector>
 
-#ifdef ANNOYING_GCC46_WORKAROUNDS
+#ifdef WORKAROUND_GCC46_COMPILER
 // constexpr is buggy with templates in this version
 # define constexpr /* nothing */
 #endif
@@ -161,7 +161,7 @@ public:
     : const_array<char>(a)
     {}
 };
-#ifdef ANNOYING_GCC46_WORKAROUNDS
+#ifdef WORKAROUND_GCC46_COMPILER
 # undef constexpr
 #endif
 
diff --git a/src/common/sanity.hpp b/src/common/sanity.hpp
index e6f2807..8271ef8 100644
--- a/src/common/sanity.hpp
+++ b/src/common/sanity.hpp
@@ -4,11 +4,16 @@
 
 # ifndef __cplusplus
 #  error "Please compile in C++ mode"
-# endif
+# endif // __cplusplus
 
 # if __GNUC__ < 4
 #  error "Your compiler is absolutely ancient. You have no chance ..."
-# endif
+# endif // __GNUC__ < 4
+
+/// Convert type assumptions to use the standard types here
+# include <cstdint>
+/// size_t, NULL
+# include <cstddef>
 
 # if __GNUC__ == 4
 // clang identifies as GCC 4.2, but is mostly okay.
@@ -16,28 +21,40 @@
 // (patched) clang 3.1 would be the requirement
 #  if __GNUC_MINOR__ < 6 && !defined(__clang__)
 #   error "Please upgrade to at least GCC 4.6"
-#  endif
+#  endif // __GNUC_MINOR__ < 6 && !defined(__clang__)
+// temporary workaround for library issues
+// since __GLIBCXX__ is hard to use
 #  if __GNUC_MINOR__ == 6
-#   define ANNOYING_GCC46_WORKAROUNDS
-#  endif
-# endif
+#   define WORKAROUND_GCC46_COMPILER
+#  endif // __GNUC_MINOR__ == 6
+#  ifdef __GLIBCXX__
+// versions of libstdc++ from gcc
+// 4.6.0, 4.6.1, 4.6.2, 4.6.3
+#   if __GLIBCXX__ == 20110325  \
+    || __GLIBCXX__ == 20110627  \
+    || __GLIBCXX__ == 20111026  \
+    || __GLIBCXX__ == 20120301  \
+    || __GLIBCXX__ == 20121127  // prerelease in Debian wheezy
+#    define WORKAROUND_GCC46_LIBRARY
+#   endif // __GLIBCXX__ == ...
+#  endif // defined __GLIBCXX__
+#  if defined(WORKAROUND_GCC46_COMPILER) \
+    && !defined(WORKAROUND_GCC46_LIBRARY)
+#   error "Unknown gcc 4.6.x release"
+#  endif // compiler and not library
+# endif // __GNUC__ == 4
 
 # ifndef __i386__
 // Known platform dependencies:
 // endianness for the [RW]FIFO.* macros
 // possibly, some signal-handling
 #  error "Unsupported platform"
-# endif
+# endif // not __i386__
 
 # ifdef __x86_64__
 // I'm working on it - I know there are some pointer-size assumptions.
 #  error "Sorry, this code is believed not to be 64-bit safe"
 #  error "please compile with -m32"
-# endif
-
-/// Convert type assumptions to use the standard types here
-# include <cstdint>
-/// size_t, NULL
-# include <cstddef>
+# endif // __x86_64__
 
 #endif // SANITY_HPP
-- 
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