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authorStephen Kelly <steveire@gmail.com>2014-11-24 20:47:48 (GMT)
committerStephen Kelly <steveire@gmail.com>2014-11-25 13:44:21 (GMT)
commitd0af0faefbeca4f2821ddafe34a0b52032ee01a7 (patch)
treebf1763623e68b6c44c6f6f5c55a629c17753d340 /Tests/Module/WriteCompilerDetectionHeader
parent598a316154922f27f987d0f7a78b28ab78a85be6 (diff)
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WCDH: Make the header -Wundef safe for the C language.
The __STDC_VERSION__ macro may be defined or not depending on the implementation dialect of C. Test that it is defined before testing its value. The CXX tests do not need such a change because they define __cplusplus in all dialects.
Diffstat (limited to 'Tests/Module/WriteCompilerDetectionHeader')
-rw-r--r--Tests/Module/WriteCompilerDetectionHeader/CMakeLists.txt7
-rw-r--r--Tests/Module/WriteCompilerDetectionHeader/c_undefined.c7
2 files changed, 14 insertions, 0 deletions
diff --git a/Tests/Module/WriteCompilerDetectionHeader/CMakeLists.txt b/Tests/Module/WriteCompilerDetectionHeader/CMakeLists.txt
index 645cc65..7bf9f28 100644
--- a/Tests/Module/WriteCompilerDetectionHeader/CMakeLists.txt
+++ b/Tests/Module/WriteCompilerDetectionHeader/CMakeLists.txt
@@ -63,6 +63,13 @@ if (CMAKE_CXX_COMPILER_ID STREQUAL GNU
list(APPEND false_defs EXPECTED_COMPILER_CXX_VARIADIC_TEMPLATES)
endif()
+if (CMAKE_C_COMPILER_ID STREQUAL GNU
+ OR CMAKE_C_COMPILER_ID STREQUAL Clang)
+ add_executable(C_undefined c_undefined.c)
+ set_property(TARGET C_undefined PROPERTY CXX_STANDARD 90)
+ target_compile_options(C_undefined PRIVATE -Werror=undef)
+endif()
+
add_executable(WriteCompilerDetectionHeader main.cpp)
set_property(TARGET WriteCompilerDetectionHeader PROPERTY CXX_STANDARD 98)
set_defines(WriteCompilerDetectionHeader "${true_defs}" "${false_defs}")
diff --git a/Tests/Module/WriteCompilerDetectionHeader/c_undefined.c b/Tests/Module/WriteCompilerDetectionHeader/c_undefined.c
new file mode 100644
index 0000000..487e66d
--- /dev/null
+++ b/Tests/Module/WriteCompilerDetectionHeader/c_undefined.c
@@ -0,0 +1,7 @@
+
+#include "test_compiler_detection.h"
+
+int main()
+{
+ return 0;
+}