Add COMPILE_OPTIONS target property.

This method reads generator expressions from the COMPILE_OPTIONS
target property, as well as INTERFACE_COMPILE_OPTIONS from linked
dependents.

4 files changed, 33 insertions, 0 deletions

diff --git a/Tests/CMakeLists.txt b/Tests/CMakeLists.txt
index 0b221e8..3a28be2 100644
--- a/Tests/CMakeLists.txt
+++ b/Tests/CMakeLists.txt
@@ -245,6 +245,7 @@ if(BUILD_TESTING)
   ADD_TEST_MACRO(PolicyScope PolicyScope)
   ADD_TEST_MACRO(EmptyLibrary EmptyLibrary)
   ADD_TEST_MACRO(CompileDefinitions CompileDefinitions)
+  ADD_TEST_MACRO(CompileOptions CompileOptions)
   ADD_TEST_MACRO(CompatibleInterface CompatibleInterface)
   set_tests_properties(EmptyLibrary PROPERTIES
     PASS_REGULAR_EXPRESSION "CMake Error: CMake can not determine linker language for target:test")
diff --git a/Tests/CompileOptions/CMakeLists.txt b/Tests/CompileOptions/CMakeLists.txt
new file mode 100644
index 0000000..6d8a96a
--- /dev/null
+++ b/Tests/CompileOptions/CMakeLists.txt
@@ -0,0 +1,16 @@
+cmake_minimum_required(VERSION 2.8)
+
+project(CompileOptions)
+
+add_library(testlib other.cpp)
+
+add_executable(CompileOptions main.cpp)
+set_property(TARGET CompileOptions PROPERTY COMPILE_OPTIONS "$<$<CXX_COMPILER_ID:GNU>:-DTEST_DEFINE>")
+target_link_libraries(CompileOptions testlib)
+
+if(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
+  target_compile_definitions(CompileOptions
+    PRIVATE
+      "DO_GNU_TESTS"
+  )
+endif()
diff --git a/Tests/CompileOptions/main.cpp b/Tests/CompileOptions/main.cpp
new file mode 100644
index 0000000..0d39050
--- /dev/null
+++ b/Tests/CompileOptions/main.cpp
@@ -0,0 +1,11 @@
+
+#ifdef DO_GNU_TESTS
+#  ifndef TEST_DEFINE
+#    error Expected TEST_DEFINE
+#  endif
+#endif
+
+int main(int argc, char **argv)
+{
+  return 0;
+}
diff --git a/Tests/CompileOptions/other.cpp b/Tests/CompileOptions/other.cpp
new file mode 100644
index 0000000..0e34375
--- /dev/null
+++ b/Tests/CompileOptions/other.cpp
@@ -0,0 +1,5 @@
+
+void foo(void)
+{
+
+}