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Check*CompilerFlag: Modernize modules

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- User lower-case names
- Wrap in function instead of macro to avoid set-unset calls
- Use IN LISTS for foreach
This commit is contained in:
Alexander Grund
2019-12-09 15:49:31 +01:00
committed by Brad King
parent d806263578
commit cb984c6627
2 changed files with 25 additions and 35 deletions
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31
Modules/CheckCCompilerFlag.cmake
View File

@@ -36,28 +36,23 @@ 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}")
function(check_c_compiler_flag _flag _var)
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}}")
# Normalize locale during test compilation.
set(_locale_vars LC_ALL LC_MESSAGES LANG)
foreach(v IN LISTS _locale_vars)
set(_locale_vars_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}
check_compiler_flag_common_patterns(_common_patterns)
check_c_source_compiles("int main(void) { return 0; }" ${_var}
# 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}
${_common_patterns}
)
foreach(v ${_CheckCCompilerFlag_LOCALE_VARS})
set(ENV{${v}} ${_CheckCCompilerFlag_SAVED_${v}})
unset(_CheckCCompilerFlag_SAVED_${v})
foreach(v IN LISTS _locale_vars)
set(ENV{${v}} ${_locale_vars_saved_${v}})
endforeach()
unset(_CheckCCompilerFlag_LOCALE_VARS)
unset(_CheckCCompilerFlag_COMMON_PATTERNS)
set (CMAKE_REQUIRED_DEFINITIONS "${SAFE_CMAKE_REQUIRED_DEFINITIONS}")
endmacro ()
set(${_var} "${${_var}}" PARENT_SCOPE)
endfunction()

29
Modules/CheckCXXCompilerFlag.cmake
View File

@@ -36,28 +36,23 @@ include_guard(GLOBAL)
include(CheckCXXSourceCompiles)
include(CMakeCheckCompilerFlagCommonPatterns)
macro (CHECK_CXX_COMPILER_FLAG _FLAG _RESULT)
set(SAFE_CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS}")
set(CMAKE_REQUIRED_DEFINITIONS "${_FLAG}")
function(check_cxx_compiler_flag _flag _var)
set(CMAKE_REQUIRED_DEFINITIONS "${_flag}")
# Normalize locale during test compilation.
set(_CheckCXXCompilerFlag_LOCALE_VARS LC_ALL LC_MESSAGES LANG)
foreach(v ${_CheckCXXCompilerFlag_LOCALE_VARS})
set(_CheckCXXCompilerFlag_SAVED_${v} "$ENV{${v}}")
set(_locale_vars LC_ALL LC_MESSAGES LANG)
foreach(v IN LISTS _locale_vars)
set(_locale_vars_saved_${v} "$ENV{${v}}")
set(ENV{${v}} C)
endforeach()
CHECK_COMPILER_FLAG_COMMON_PATTERNS(_CheckCXXCompilerFlag_COMMON_PATTERNS)
CHECK_CXX_SOURCE_COMPILES("int main() { return 0; }" ${_RESULT}
check_compiler_flag_common_patterns(_common_patterns)
check_cxx_source_compiles("int main() { return 0; }" ${_var}
# Some compilers do not fail with a bad flag
FAIL_REGEX "command line option .* is valid for .* but not for C\\\\+\\\\+" # GNU
${_CheckCXXCompilerFlag_COMMON_PATTERNS}
${_common_patterns}
)
foreach(v ${_CheckCXXCompilerFlag_LOCALE_VARS})
set(ENV{${v}} ${_CheckCXXCompilerFlag_SAVED_${v}})
unset(_CheckCXXCompilerFlag_SAVED_${v})
foreach(v IN LISTS _locale_vars)
set(ENV{${v}} ${_locale_vars_saved_${v}})
endforeach()
unset(_CheckCXXCompilerFlag_LOCALE_VARS)
unset(_CheckCXXCompilerFlag_COMMON_PATTERNS)
set (CMAKE_REQUIRED_DEFINITIONS "${SAFE_CMAKE_REQUIRED_DEFINITIONS}")
endmacro ()
set(${_var} "${${_var}}" PARENT_SCOPE)
endfunction()