From 875b297278057f1b40c87ec1c3a532288e7a057d Mon Sep 17 00:00:00 2001
From: John Maguire <john.maguire@gmail.com>
Date: Mon, 26 Nov 2012 15:36:05 +0100
Subject: [PATCH] Check for lambda support before using it.

---
 CMakeLists.txt         | 7 +++++++
 src/config.h.in        | 1 +
 tests/closure_test.cpp | 3 +++
 3 files changed, 11 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2ec3230ba..f032e0a48 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -25,8 +25,15 @@ check_cxx_source_compiles(
      }
     "
     USE_STD_UNORDERED_MAP)
+check_cxx_source_compiles(
+    "int main() {
+       [](){}();
+     }
+    "
+    HAVE_LAMBDAS)
 unset(CMAKE_REQUIRED_FLAGS)
 
+
 if (UNIX AND NOT APPLE)
   set(LINUX 1)
 endif (UNIX AND NOT APPLE)
diff --git a/src/config.h.in b/src/config.h.in
index 97e5803c1..7b85e6355 100644
--- a/src/config.h.in
+++ b/src/config.h.in
@@ -44,5 +44,6 @@
 #cmakedefine USE_INSTALL_PREFIX
 #cmakedefine USE_SYSTEM_PROJECTM
 #cmakedefine USE_STD_UNORDERED_MAP
+#cmakedefine HAVE_LAMBDAS
 
 #endif // CONFIG_H_IN
diff --git a/tests/closure_test.cpp b/tests/closure_test.cpp
index 486a6d75b..4a76dc0e2 100644
--- a/tests/closure_test.cpp
+++ b/tests/closure_test.cpp
@@ -5,6 +5,7 @@
 #include <QSharedPointer>
 #include <QSignalSpy>
 
+#include "config.h"
 #include "core/closure.h"
 #include "test_utils.h"
 
@@ -63,6 +64,7 @@ TEST(ClosureTest, ClosureDoesNotCrashWithSharedPointerSender) {
   EXPECT_TRUE(closure.isNull());
 }
 
+#ifdef HAVE_LAMBDAS
 TEST(ClosureTest, ClosureCallsLambda) {
   TestQObject sender;
   bool called = false;
@@ -73,3 +75,4 @@ TEST(ClosureTest, ClosureCallsLambda) {
   sender.Emit();
   EXPECT_TRUE(called);
 }
+#endif  // HAVE_LAMBDAS