diff options
Diffstat (limited to 'cmake/QtFeature.cmake')
| -rw-r--r-- | cmake/QtFeature.cmake | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/cmake/QtFeature.cmake b/cmake/QtFeature.cmake index 4ee070fd9a..6856779caf 100644 --- a/cmake/QtFeature.cmake +++ b/cmake/QtFeature.cmake @@ -899,6 +899,11 @@ function(qt_internal_detect_dirty_features) endif() endfunction() +# Builds either a string of source code or a whole project to determine whether the build is +# successful. +# +# Sets a TEST_${name}_OUTPUT variable with the build output, to the scope of the calling function. +# Sets a TEST_${name} cache variable to either TRUE or FALSE if the build is successful or not. function(qt_config_compile_test name) if(DEFINED "TEST_${name}") return() @@ -1021,8 +1026,11 @@ function(qt_config_compile_test name) get_filename_component(arg_PROJECT_PATH "${arg_PROJECT_PATH}" REALPATH) endif() - try_compile(HAVE_${name} "${CMAKE_BINARY_DIR}/config.tests/${name}" "${arg_PROJECT_PATH}" - "${name}" CMAKE_FLAGS ${flags} ${arg_CMAKE_FLAGS}) + try_compile( + HAVE_${name} "${CMAKE_BINARY_DIR}/config.tests/${name}" "${arg_PROJECT_PATH}" "${name}" + CMAKE_FLAGS ${flags} ${arg_CMAKE_FLAGS} + OUTPUT_VARIABLE try_compile_output + ) if(${HAVE_${name}}) set(status_label "Success") @@ -1088,7 +1096,19 @@ function(qt_config_compile_test name) set(_save_CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES}") set(CMAKE_REQUIRED_LIBRARIES "${arg_LIBRARIES}") - check_cxx_source_compiles("${arg_UNPARSED_ARGUMENTS} ${arg_CODE}" HAVE_${name}) + + # OUTPUT_VARIABLE is an internal undocumented variable of check_cxx_source_compiles + # since 3.23. Allow an opt out in case this breaks in the future. + set(try_compile_output "") + set(output_var "") + if(CMAKE_VERSION VERSION_GREATER_EQUAL "3.23" + AND NOT QT_INTERNAL_NO_TRY_COMPILE_OUTPUT_VARIABLE) + set(output_var OUTPUT_VARIABLE try_compile_output) + endif() + + check_cxx_source_compiles( + "${arg_UNPARSED_ARGUMENTS} ${arg_CODE}" HAVE_${name} ${output_var} + ) set(CMAKE_REQUIRED_LIBRARIES "${_save_CMAKE_REQUIRED_LIBRARIES}") set(CMAKE_C_STANDARD "${_save_CMAKE_C_STANDARD}") @@ -1100,6 +1120,7 @@ function(qt_config_compile_test name) endif() endif() + set(TEST_${name}_OUTPUT "${try_compile_output}" PARENT_SCOPE) set(TEST_${name} "${HAVE_${name}}" CACHE INTERNAL "${arg_LABEL}") endfunction() |