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| author | makise-homura <akemi_homura@kurisa.ch> | 2021-10-05 19:41:02 (GMT) |
|---|---|---|
| committer | makise-homura <akemi_homura@kurisa.ch> | 2021-10-15 02:05:19 (GMT) |
| commit | e5d9fce03feeece7f53451da9fb958db2613d31e (patch) | |
| tree | a8e5fc2001514dce2f4f390f48f416f650db456e /Modules/Compiler/LCC-C-FeatureTests.cmake | |
| parent | 2b9ef77944cab3a330fa547dbe7e87aefd80b795 (diff) | |
| download | CMake-e5d9fce03feeece7f53451da9fb958db2613d31e.zip CMake-e5d9fce03feeece7f53451da9fb958db2613d31e.tar.gz CMake-e5d9fce03feeece7f53451da9fb958db2613d31e.tar.bz2 | |
LCC: Add dedicated support for MCST LCC compiler
Divert LCC compiler as a new one, instead of treating it as GNU.
Since old times, Elbrus C/C++/Fortran Compiler (LCC) by MCST has been
passing checks for GNU compilers, so it has been identified as GNU.
Now, with intent of seriously upstreaming its support, it has been
added as a separate LCC compiler, and its version displays not a
supported GCC version, but LCC version itself (e.g. LCC 1.25.19 instead
of GNU 7.3.0).
This commit adds its support for detection, and also converts basically
every check like 'is this compiler GNU?' to 'is this compiler GNU or
LCC?'. The only places where this check is untouched, is where it
regards other platforms where LCC is unavailable (primarily non-Linux),
and where it REALLY differs from GNU compiler.
Note: this transition may break software that are already ported to
Elbrus, but hardly relies that LCC will be detected as GNU; still such
software is not known.
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}") |