diff options
Diffstat (limited to 'Modules/Compiler/LCC-C-FeatureTests.cmake')
| -rw-r--r-- | Modules/Compiler/LCC-C-FeatureTests.cmake | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/Modules/Compiler/LCC-C-FeatureTests.cmake b/Modules/Compiler/LCC-C-FeatureTests.cmake new file mode 100644 index 0000000..0ab5265 --- /dev/null +++ b/Modules/Compiler/LCC-C-FeatureTests.cmake @@ -0,0 +1,17 @@ + +set(_cmake_oldestSupported "(__GNUC__ * 100 + __GNUC_MINOR__) >= 304") + +# GNU 4.7 correctly sets __STDC_VERSION__ to 201112L, but GNU 4.6 sets it +# to 201000L. As the former is strictly greater than the latter, test only +# for the latter. If in the future CMake learns about a C feature which was +# introduced with GNU 4.7, that should test for the correct version, similar +# to the distinction between __cplusplus and __GXX_EXPERIMENTAL_CXX0X__ tests. +set(GNU46_C11 "(__GNUC__ * 100 + __GNUC_MINOR__) >= 406 && defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201000L") +set(_cmake_feature_test_c_static_assert "${GNU46_C11}") +# Since 3.4 at least: +set(GNU34_C99 "(__GNUC__ * 100 + __GNUC_MINOR__) >= 304 && defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L") +set(_cmake_feature_test_c_restrict "${GNU34_C99}") +set(_cmake_feature_test_c_variadic_macros "${GNU34_C99}") + +set(GNU_C90 "${_cmake_oldestSupported}") +set(_cmake_feature_test_c_function_prototypes "${GNU_C90}") |