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authorBrad King <brad.king@kitware.com>2009-07-10 13:53:38 -0400
committerBrad King <brad.king@kitware.com>2009-07-10 13:53:38 -0400
commit22b96543e5a283990d3b41d740b281597b2617af (patch)
tree241ad925bdd6e9b06ce979b6da79a4ac99daa991
parent19792bf30e0499cc49ee518e42274ef02e91db9a (diff)
downloadcmake-22b96543e5a283990d3b41d740b281597b2617af.tar.gz
ENH: Test transitive link languages
This test creates a C executable that links to a C++ static library. On most platforms the executable will not link unless the C++ linker is chosen correctly.
-rw-r--r--Tests/CMakeLists.txt1
-rw-r--r--Tests/LinkLanguage/CMakeLists.txt10
-rw-r--r--Tests/LinkLanguage/LinkLanguage.c6
-rw-r--r--Tests/LinkLanguage/foo.cxx6
4 files changed, 23 insertions, 0 deletions
diff --git a/Tests/CMakeLists.txt b/Tests/CMakeLists.txt
index cc0013b5a2..83e11e323e 100644
--- a/Tests/CMakeLists.txt
+++ b/Tests/CMakeLists.txt
@@ -92,6 +92,7 @@ IF(BUILD_TESTING)
ADD_TEST_MACRO(SetLang SetLang)
ADD_TEST_MACRO(ExternalOBJ ExternalOBJ)
ADD_TEST_MACRO(LoadCommand LoadedCommand)
+ ADD_TEST_MACRO(LinkLanguage LinkLanguage)
ADD_TEST_MACRO(LinkLine LinkLine)
ADD_TEST_MACRO(MacroTest miniMacroTest)
ADD_TEST_MACRO(FunctionTest miniFunctionTest)
diff --git a/Tests/LinkLanguage/CMakeLists.txt b/Tests/LinkLanguage/CMakeLists.txt
new file mode 100644
index 0000000000..89c2982343
--- /dev/null
+++ b/Tests/LinkLanguage/CMakeLists.txt
@@ -0,0 +1,10 @@
+cmake_minimum_required(VERSION 2.7.20090708)
+project(LinkLanguage C CXX)
+
+add_library(foo STATIC foo.cxx)
+add_executable(LinkLanguage LinkLanguage.c)
+target_link_libraries(LinkLanguage foo)
+
+# CMake should now automatically choose CXX for linking, so we need
+# not set the property:
+#set_property(TARGET LinkLanguage PROPERTY LINKER_LANGUAGE CXX)
diff --git a/Tests/LinkLanguage/LinkLanguage.c b/Tests/LinkLanguage/LinkLanguage.c
new file mode 100644
index 0000000000..cf1557cabe
--- /dev/null
+++ b/Tests/LinkLanguage/LinkLanguage.c
@@ -0,0 +1,6 @@
+extern int foo(void);
+int main()
+{
+ return foo();
+}
+
diff --git a/Tests/LinkLanguage/foo.cxx b/Tests/LinkLanguage/foo.cxx
new file mode 100644
index 0000000000..5321c2dc0f
--- /dev/null
+++ b/Tests/LinkLanguage/foo.cxx
@@ -0,0 +1,6 @@
+extern "C" int foo(void)
+{
+ // Reference C++ standard library symbols.
+ delete new int;
+ return 0;
+}