diff options
Diffstat (limited to 'openmp/runtime/cmake')
| -rw-r--r-- | openmp/runtime/cmake/config-ix.cmake | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/openmp/runtime/cmake/config-ix.cmake b/openmp/runtime/cmake/config-ix.cmake index 5404715b6d9..61b6618ee6d 100644 --- a/openmp/runtime/cmake/config-ix.cmake +++ b/openmp/runtime/cmake/config-ix.cmake @@ -10,6 +10,7 @@ include(CheckCCompilerFlag) include(CheckCSourceCompiles) +include(CheckCXXSourceCompiles) include(CheckCXXCompilerFlag) include(CheckIncludeFile) include(CheckLibraryExists) @@ -38,6 +39,42 @@ function(libomp_check_version_symbols retval) file(REMOVE ${CMAKE_CURRENT_BINARY_DIR}/__version_script.txt) endfunction() +function(libomp_check_attribute_fallthrough retval) + set(fallthroughs "[[fallthrough]]" "[[clang::fallthrough]]" "__attribute__((__fallthrough__))") + foreach(fallthrough IN LISTS fallthroughs) + string(MAKE_C_IDENTIFIER "${fallthrough}" test_name) + set(source_code + "#include <stdio.h> + enum class foo_e { zero, one, two, three, four }; + int main(int argc, char** argv) { + foo_e foo; + if (argc == 0) foo = foo_e::zero; + else if (argc == 1) foo = foo_e::one; + else if (argc == 2) foo = foo_e::two; + else if (argc == 3) foo = foo_e::three; + else if (argc == 4) foo = foo_e::four; + switch (foo) { + case foo_e::zero: + ${fallthrough} + case foo_e::one: + return 1; + case foo_e::two: + return 2; + case foo_e::three: + return 3; + case foo_e::four: + return 4; + } + return 0; + }") + check_cxx_source_compiles("${source_code}" ${test_name}) + if(${test_name}) + set(${retval} ${fallthrough} PARENT_SCOPE) + break() + endif() + endforeach() +endfunction() + # Includes the architecture flag in both compile and link phase function(libomp_check_architecture_flag flag retval) set(CMAKE_REQUIRED_FLAGS "${flag}") @@ -172,6 +209,7 @@ endif() # Checking features # Check if version symbol assembler directives are supported libomp_check_version_symbols(LIBOMP_HAVE_VERSION_SYMBOLS) +libomp_check_attribute_fallthrough(LIBOMP_FALLTHROUGH) # Check if quad precision types are available if(CMAKE_C_COMPILER_ID STREQUAL "GNU") |
