diff options
Diffstat (limited to 'cmake/QtFeature.cmake')
| -rw-r--r-- | cmake/QtFeature.cmake | 70 |
1 files changed, 68 insertions, 2 deletions
diff --git a/cmake/QtFeature.cmake b/cmake/QtFeature.cmake index b957253fea..9e88ceac91 100644 --- a/cmake/QtFeature.cmake +++ b/cmake/QtFeature.cmake @@ -641,12 +641,74 @@ function(qt_config_compile_test name) endif() cmake_parse_arguments(arg "" "LABEL;PROJECT_PATH;C_STANDARD;CXX_STANDARD" - "COMPILE_OPTIONS;LIBRARIES;CODE" ${ARGN}) + "COMPILE_OPTIONS;LIBRARIES;CODE;PACKAGES" ${ARGN}) if(arg_PROJECT_PATH) message(STATUS "Performing Test ${arg_LABEL}") + + set(flags "") + qt_get_platform_try_compile_vars(platform_try_compile_vars) + list(APPEND flags ${platform_try_compile_vars}) + + # If the repo has its own cmake modules, include those in the module path, so that various + # find_package calls work. + if(EXISTS "${PROJECT_SOURCE_DIR}/cmake") + list(APPEND flags "-DCMAKE_MODULE_PATH:STRING=${PROJECT_SOURCE_DIR}/cmake") + endif() + + # Pass which packages need to be found. + # Very scary / ugly escaping incoming. + if(arg_PACKAGES) + set(packages_list "") + + # Parse the package names, version, etc. An example would be: + # PACKAGE Foo 6 REQUIRED + # PACKAGE Bar 2 COMPONENTS Baz + foreach(p ${arg_PACKAGES}) + if(p STREQUAL PACKAGE) + if(package_entry) + # Use 6 backslashes + ; which will be collapsed when doing variable + # expansion at multiple stages. + list(JOIN package_entry "\\\\\\;" package_entry_string) + list(APPEND packages_list "${package_entry_string}") + endif() + + set(package_entry "") + else() + list(APPEND package_entry "${p}") + endif() + endforeach() + # Parse final entry. + if(package_entry) + list(JOIN package_entry "\\\\\\;" package_entry_string) + list(APPEND packages_list "${package_entry_string}") + endif() + + # Before the join, packages_list has 3 backslashes + ; for each package part + # (name, component) if you display them. + # After the join, packages_list has 2 backslashes + ; for each package part, and a + # '\;' to separate package entries. + list(JOIN packages_list "\;" packages_list) + + # Finally when appending the joined string to the flags, the flags are separated by + # ';', the package entries by '\;', and the packages parts of an entry by '\\;'. + # Example: + # WrapFoo\\;6\\;COMPONENTS\\;bar\;WrapBaz\\;5 + list(APPEND flags "-DQT_CONFIG_COMPILE_TEST_PACKAGES:STRING=${packages_list}") + + # Inside the project, the value of QT_CONFIG_COMPILE_TEST_PACKAGES is used in a foreach + # loop that calls find_package() for each package entry, and thus the variable expansion + # ends up calling something like find_package(WrapFoo;6;COMPONENTS;bar) aka + # find_package(WrapFoo 6 COMPONENTS bar). + endif() + + # Pass which libraries need to be linked against. + if(arg_LIBRARIES) + list(APPEND flags "-DQT_CONFIG_COMPILE_TEST_LIBRARIES:STRING=${arg_LIBRARIES}") + endif() + try_compile(HAVE_${name} "${CMAKE_BINARY_DIR}/config.tests/${name}" "${arg_PROJECT_PATH}" - "${name}") + "${name}" CMAKE_FLAGS ${flags}) if(${HAVE_${name}}) set(status_label "Success") @@ -721,6 +783,10 @@ function(qt_get_platform_try_compile_vars out_var) list(APPEND flags "VCPKG_CHAINLOAD_TOOLCHAIN_FILE") endif() + # Pass language standard flags. + list(APPEND flags "CMAKE_C_STANDARD") + list(APPEND flags "CMAKE_CXX_STANDARD") + # Assemble the list with regular options. set(flags_cmd_line "") foreach(flag ${flags}) |