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Diffstat (limited to 'share/cmake-3.16/Modules/CheckCCompilerFlag.cmake')
-rw-r--r-- | share/cmake-3.16/Modules/CheckCCompilerFlag.cmake | 63 |
1 files changed, 0 insertions, 63 deletions
diff --git a/share/cmake-3.16/Modules/CheckCCompilerFlag.cmake b/share/cmake-3.16/Modules/CheckCCompilerFlag.cmake deleted file mode 100644 index a3e2da3..0000000 --- a/share/cmake-3.16/Modules/CheckCCompilerFlag.cmake +++ /dev/null @@ -1,63 +0,0 @@ -# Distributed under the OSI-approved BSD 3-Clause License. See accompanying -# file Copyright.txt or https://cmake.org/licensing for details. - -#[=======================================================================[.rst: -CheckCCompilerFlag ------------------- - -Check whether the C compiler supports a given flag. - -.. command:: check_c_compiler_flag - - .. code-block:: cmake - - check_c_compiler_flag(<flag> <var>) - - Check that the ``<flag>`` is accepted by the compiler without - a diagnostic. Stores the result in an internal cache entry - named ``<var>``. - -This command temporarily sets the ``CMAKE_REQUIRED_DEFINITIONS`` variable -and calls the ``check_c_source_compiles`` macro from the -:module:`CheckCSourceCompiles` module. See documentation of that -module for a listing of variables that can otherwise modify the build. - -A positive result from this check indicates only that the compiler did not -issue a diagnostic message when given the flag. Whether the flag has any -effect or even a specific one is beyond the scope of this module. - -.. note:: - Since the :command:`try_compile` command forwards flags from variables - like :variable:`CMAKE_C_FLAGS <CMAKE_<LANG>_FLAGS>`, unknown flags - in such variables may cause a false negative for this check. -#]=======================================================================] - -include_guard(GLOBAL) -include(CheckCSourceCompiles) -include(CMakeCheckCompilerFlagCommonPatterns) - -macro (CHECK_C_COMPILER_FLAG _FLAG _RESULT) - set(SAFE_CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS}") - set(CMAKE_REQUIRED_DEFINITIONS "${_FLAG}") - - # Normalize locale during test compilation. - set(_CheckCCompilerFlag_LOCALE_VARS LC_ALL LC_MESSAGES LANG) - foreach(v ${_CheckCCompilerFlag_LOCALE_VARS}) - set(_CheckCCompilerFlag_SAVED_${v} "$ENV{${v}}") - set(ENV{${v}} C) - endforeach() - CHECK_COMPILER_FLAG_COMMON_PATTERNS(_CheckCCompilerFlag_COMMON_PATTERNS) - CHECK_C_SOURCE_COMPILES("int main(void) { return 0; }" ${_RESULT} - # Some compilers do not fail with a bad flag - FAIL_REGEX "command line option .* is valid for .* but not for C" # GNU - ${_CheckCCompilerFlag_COMMON_PATTERNS} - ) - foreach(v ${_CheckCCompilerFlag_LOCALE_VARS}) - set(ENV{${v}} ${_CheckCCompilerFlag_SAVED_${v}}) - unset(_CheckCCompilerFlag_SAVED_${v}) - endforeach() - unset(_CheckCCompilerFlag_LOCALE_VARS) - unset(_CheckCCompilerFlag_COMMON_PATTERNS) - - set (CMAKE_REQUIRED_DEFINITIONS "${SAFE_CMAKE_REQUIRED_DEFINITIONS}") -endmacro () |