From 53a4d10251bb079fa22ced4dcbb381f42f56ceb1 Mon Sep 17 00:00:00 2001
From: Bryce Harrington <bryce@bryceharrington.org>
Date: Sat, 27 Feb 2016 01:25:50 -0800
Subject: cmake: Add sigc++ support

Patch from rindolf

Signed-off-by: Bryce Harrington <bryce@bryceharrington.org>

(bzr r14669)
---
 CMakeScripts/Modules/FindSigC++.cmake | 22 +++++++++++++++++++++-
 CMakeScripts/Modules/sigcpp_test.cpp  | 15 +++++++++++++++
 2 files changed, 36 insertions(+), 1 deletion(-)
 create mode 100644 CMakeScripts/Modules/sigcpp_test.cpp

(limited to 'CMakeScripts/Modules')

diff --git a/CMakeScripts/Modules/FindSigC++.cmake b/CMakeScripts/Modules/FindSigC++.cmake
index ed0abc545..8046410b5 100644
--- a/CMakeScripts/Modules/FindSigC++.cmake
+++ b/CMakeScripts/Modules/FindSigC++.cmake
@@ -13,7 +13,6 @@
 #  For details see the accompanying COPYING-CMAKE-SCRIPTS file.
 #
 
-
 if (SIGC++_LIBRARIES AND SIGC++_INCLUDE_DIRS)
   # in cache already
   set(SIGC++_FOUND TRUE)
@@ -103,4 +102,25 @@ else (SIGC++_LIBRARIES AND SIGC++_INCLUDE_DIRS)
 
 endif (SIGC++_LIBRARIES AND SIGC++_INCLUDE_DIRS)
 
+# Try to add -std=c++11 if needed - see:
+# https://bugs.launchpad.net/inkscape/+bug/1488079
+
+macro (sigcpp_compile extra_cppflags)
+    try_compile(SIGCPP_COMPILES_FINE "${CMAKE_BINARY_DIR}/sigcpp-bindir"
+        SOURCES "${CMAKE_SOURCE_DIR}/CMakeScripts/Modules/sigcpp_test.cpp"
+        COMPILE_DEFINITIONS ${_SIGC++_CFLAGS} ${extra_cppflags}
+        LINK_LIBRARIES ${SIGC++_LIBRARIES})
+endmacro()
+
+
+sigcpp_compile("")
+if (NOT "${SIGCPP_COMPILES_FINE}")
+    set (cppflag "-std=c++11")
+    sigcpp_compile("${cppflag}")
+    if ("${SIGCPP_COMPILES_FINE}")
+        set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${cppflag}")
+    else()
+        message(FATAL_ERROR "Could not compile against SIGC++")
+    endif()
+endif()
 
diff --git a/CMakeScripts/Modules/sigcpp_test.cpp b/CMakeScripts/Modules/sigcpp_test.cpp
new file mode 100644
index 000000000..b4cf2c773
--- /dev/null
+++ b/CMakeScripts/Modules/sigcpp_test.cpp
@@ -0,0 +1,15 @@
+/*
+ * Building this using:
+
+ g++ `pkg-config --cflags sigc++-2.0` sigcpp_test.cpp
+
+ Results in an error.
+ * */
+#include <stddef.h>
+#include <string>
+#include <sigc++/signal.h>
+
+int main()
+{
+    return 0;
+}
-- 
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