From 2cdb159cbd849eccd7f1cd78d91b18cca817635a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20Vondru=C5=A1?= <mosra@centrum.cz>
Date: Thu, 28 Feb 2013 17:40:04 +0100
Subject: [PATCH] GCC 4.6 compatibility: no user-defined literals.

---
 src/Magnum.h                | 4 ++++
 src/Math/Angle.h            | 1 +
 src/Math/Test/AngleTest.cpp | 4 ++++
 3 files changed, 9 insertions(+)

diff --git a/src/Magnum.h b/src/Magnum.h
index efd95f02a..1466bbde7 100644
--- a/src/Magnum.h
+++ b/src/Magnum.h
@@ -40,10 +40,12 @@ namespace Magnum {
 namespace Math {
     template<class T> struct Constants;
 
+    #ifndef CORRADE_GCC46_COMPATIBILITY
     constexpr Rad<Double> operator "" _rad(long double);
     constexpr Rad<Float> operator "" _radf(long double);
     constexpr Deg<Double> operator "" _deg(long double);
     constexpr Deg<Float> operator "" _degf(long double);
+    #endif
 }
 
 /* Bring debugging facility from Corrade::Utility namespace */
@@ -240,11 +242,13 @@ typedef Math::Geometry::Rectangle<Double> Rectangled;
 /*@}*/
 #endif
 
+#ifndef CORRADE_GCC46_COMPATIBILITY
 /* Using angle literals from Math namespace */
 using Math::operator "" _deg;
 using Math::operator "" _degf;
 using Math::operator "" _rad;
 using Math::operator "" _radf;
+#endif
 
 /** @todoc Remove `ifndef` when Doxygen is sane again */
 #ifndef DOXYGEN_GENERATING_OUTPUT
diff --git a/src/Math/Angle.h b/src/Math/Angle.h
index cc6d4489a..6ba1be5d4 100644
--- a/src/Math/Angle.h
+++ b/src/Math/Angle.h
@@ -20,6 +20,7 @@
  */
 
 #include <Utility/Debug.h>
+#include <corradeCompatibility.h>
 
 #include "Math/Constants.h"
 #include "Math/Math.h"
diff --git a/src/Math/Test/AngleTest.cpp b/src/Math/Test/AngleTest.cpp
index 7ac2f7e6b..5a2817893 100644
--- a/src/Math/Test/AngleTest.cpp
+++ b/src/Math/Test/AngleTest.cpp
@@ -73,6 +73,7 @@ void AngleTest::construct() {
 }
 
 void AngleTest::literals() {
+    #ifndef CORRADE_GCC46_COMPATIBILITY
     constexpr auto a = 25.0_deg;
     constexpr auto b = 25.0_degf;
     CORRADE_VERIFY((std::is_same<decltype(a), const Degd>::value));
@@ -86,6 +87,9 @@ void AngleTest::literals() {
     CORRADE_VERIFY((std::is_same<decltype(n), const Rad>::value));
     CORRADE_COMPARE(Double(m), 3.14);
     CORRADE_COMPARE(Float(n), 3.14f);
+    #else
+    CORRADE_SKIP("User-defined literals are not available on GCC < 4.7.");
+    #endif
 }
 
 void AngleTest::conversion() {