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Check{Compiler,Linker}Flag: Add possibility to retrieve check outputs

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This commit is contained in:
Marc Chevrier
2022-01-16 15:36:23 +01:00
parent 58804d1e58
commit 4fa105d34e
3 changed files with 24 additions and 1 deletions
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8
Modules/Internal/CheckCompilerFlag.cmake
View File

@@ -7,6 +7,9 @@ include(Internal/CheckSourceCompiles)
include(CMakeCheckCompilerFlagCommonPatterns)
function(CMAKE_CHECK_COMPILER_FLAG _lang _flag _var)
# Parse extra arguments
cmake_parse_arguments(PARSE_ARGV 3 CHECK_COMPILER_FLAG "" "OUTPUT_VARIABLE" "")
cmake_check_flag_common_init("check_compiler_flag" ${_lang} _lang_src _lang_fail_regex)
set(CMAKE_REQUIRED_DEFINITIONS ${_flag})
@@ -17,7 +20,12 @@ function(CMAKE_CHECK_COMPILER_FLAG _lang _flag _var)
${_var}
${_lang_fail_regex}
${_common_patterns}
OUTPUT_VARIABLE _output
)
if (CHECK_COMPILER_FLAG_OUTPUT_VARIABLE)
set(${CHECK_COMPILER_FLAG_OUTPUT_VARIABLE} "${_output}" PARENT_SCOPE)
endif()
cmake_check_flag_common_finish()
endfunction()

8
Modules/Internal/CheckLinkerFlag.cmake
View File

@@ -17,6 +17,9 @@ function(CMAKE_CHECK_LINKER_FLAG _lang _flag _var)
return()
endif()
# Parse extra arguments
cmake_parse_arguments(PARSE_ARGV 3 CHECK_LINKER_FLAG "" "OUTPUT_VARIABLE" "")
cmake_check_flag_common_init("check_linker_flag" ${_lang} _lang_src _lang_fail_regex)
set(CMAKE_REQUIRED_LINK_OPTIONS "${_flag}")
@@ -27,8 +30,13 @@ function(CMAKE_CHECK_LINKER_FLAG _lang _flag _var)
${_var}
${_lang_fail_regex}
${_common_patterns}
OUTPUT_VARIABLE _output
)
if (CHECK_LINKER_FLAG_OUTPUT_VARIABLE)
set(${CHECK_LINKER_FLAG_OUTPUT_VARIABLE} "${_output}" PARENT_SCOPE)
endif()
cmake_check_flag_common_finish()
endfunction()

9
Modules/Internal/CheckSourceCompiles.cmake
View File

@@ -49,13 +49,16 @@ function(CMAKE_CHECK_SOURCE_COMPILES _lang _source _var)
set(_SRC_EXT)
set(_key)
foreach(arg ${ARGN})
if("${arg}" MATCHES "^(FAIL_REGEX|SRC_EXT)$")
if("${arg}" MATCHES "^(FAIL_REGEX|SRC_EXT|OUTPUT_VARIABLE)$")
set(_key "${arg}")
elseif(_key STREQUAL "FAIL_REGEX")
list(APPEND _FAIL_REGEX "${arg}")
elseif(_key STREQUAL "SRC_EXT")
set(_SRC_EXT "${arg}")
set(_key "")
elseif(_key STREQUAL "OUTPUT_VARIABLE")
set(_OUTPUT_VARIABLE "${arg}")
set(_key "")
else()
message(FATAL_ERROR "Unknown argument:\n ${arg}\n")
endif()
@@ -105,6 +108,10 @@ function(CMAKE_CHECK_SOURCE_COMPILES _lang _source _var)
endif()
endforeach()
if (_OUTPUT_VARIABLE)
set(${_OUTPUT_VARIABLE} "${OUTPUT}" PARENT_SCOPE)
endif()
if(${_var})
set(${_var} 1 CACHE INTERNAL "Test ${_var}")
if(NOT CMAKE_REQUIRED_QUIET)