qt5base-lts/config.tests/no_direct_extern_access/CMakeLists.txt

cmake_minimum_required(VERSION 3.16)
project(direct_extern_access LANGUAGES CXX)

# this is the test found in https://sourceware.org/bugzilla/show_bug.cgi?id=29087
# and https://sourceware.org/bugzilla/show_bug.cgi?id=29377

add_library(no_extern_access_lib SHARED lib.cpp)
add_executable(no_extern_access_main other.cpp main.cpp)

target_compile_options(no_extern_access_lib PRIVATE "-Werror")
target_compile_options(no_extern_access_lib PUBLIC "$<$<CXX_COMPILER_ID:GNU>:-mno-direct-extern-access>")
target_compile_options(no_extern_access_lib PUBLIC "$<$<CXX_COMPILER_ID:Clang>:-fno-direct-access-external-data>")

target_link_libraries(no_extern_access_main no_extern_access_lib)
CMake: Test the linker too for -mno-direct-extern-access The GNU binutils ld linker needed a patch after the tagging of 2.38 to make the new feature work. Before this patch, the linker will fail to link when protected visibility symbols are used in the library, so don't enable the feature unless the linker is recent enough. GNU binutils gold from that version passes this test. LLVM lld is unknown (I didn't test), but LLVM was consulted in developing the feature. Fixes: QTBUG-103493 Change-Id: Ibcde9b9795ad42ac9978fffd16f1c80ca20953ff Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org> Reviewed-by: Marc Mutz <marc.mutz@qt.io> 2022-05-23 16:14:54 +00:00			`cmake_minimum_required(VERSION 3.16)`
			`project(direct_extern_access LANGUAGES CXX)`

			`# this is the test found in https://sourceware.org/bugzilla/show_bug.cgi?id=29087`
CMake: add one more test for no_direct_extern_access Found while compiling qtdeclarative tests: FAILED: qtdeclarative/tests/auto/qml/qmlcppcodegen/tst_qmlcppcodegen [...] ld: qtdeclarative/tests/auto/qml/qmlcppcodegen/data/TestTypes/libcodegen_test_moduleplugin.a(codegen_test_moduleplugin_TestTypesPlugin.cpp.o): non-canonical reference to canonical protected function `_Z28qml_register_types_TestTypesv' in qtdeclarative/tests/auto/qml/qmlcppcodegen/data/libcodegen_test_module.a(codegen_test_module_qmltyperegistrations.cpp.o) ld: failed to set dynamic section sizes: bad value collect2: error: ld returned 1 exit status ninja: build stopped: subcommand failed. See https://sourceware.org/bugzilla/show_bug.cgi?id=29377 Pick-to: 6.4 Change-Id: I3859764fed084846bcb0fffd1702fe6da341a9e3 Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io> 2022-07-18 18:01:18 +00:00			`# and https://sourceware.org/bugzilla/show_bug.cgi?id=29377`
CMake: Test the linker too for -mno-direct-extern-access The GNU binutils ld linker needed a patch after the tagging of 2.38 to make the new feature work. Before this patch, the linker will fail to link when protected visibility symbols are used in the library, so don't enable the feature unless the linker is recent enough. GNU binutils gold from that version passes this test. LLVM lld is unknown (I didn't test), but LLVM was consulted in developing the feature. Fixes: QTBUG-103493 Change-Id: Ibcde9b9795ad42ac9978fffd16f1c80ca20953ff Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org> Reviewed-by: Marc Mutz <marc.mutz@qt.io> 2022-05-23 16:14:54 +00:00
			`add_library(no_extern_access_lib SHARED lib.cpp)`
CMake: add one more test for no_direct_extern_access Found while compiling qtdeclarative tests: FAILED: qtdeclarative/tests/auto/qml/qmlcppcodegen/tst_qmlcppcodegen [...] ld: qtdeclarative/tests/auto/qml/qmlcppcodegen/data/TestTypes/libcodegen_test_moduleplugin.a(codegen_test_moduleplugin_TestTypesPlugin.cpp.o): non-canonical reference to canonical protected function `_Z28qml_register_types_TestTypesv' in qtdeclarative/tests/auto/qml/qmlcppcodegen/data/libcodegen_test_module.a(codegen_test_module_qmltyperegistrations.cpp.o) ld: failed to set dynamic section sizes: bad value collect2: error: ld returned 1 exit status ninja: build stopped: subcommand failed. See https://sourceware.org/bugzilla/show_bug.cgi?id=29377 Pick-to: 6.4 Change-Id: I3859764fed084846bcb0fffd1702fe6da341a9e3 Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io> 2022-07-18 18:01:18 +00:00			`add_executable(no_extern_access_main other.cpp main.cpp)`
Fix attempt to use -mno-direct-extern-access with Clang Clang has the option, but spells it differently. Fixes: QTBUG-105002 Pick-to: 6.4 Change-Id: I36b24183fbd041179f2ffffd170217e82ff6d14d Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io> 2022-07-15 19:38:18 +00:00
			`target_compile_options(no_extern_access_lib PRIVATE "-Werror")`
			`target_compile_options(no_extern_access_lib PUBLIC "$<$<CXX_COMPILER_ID:GNU>:-mno-direct-extern-access>")`
			`target_compile_options(no_extern_access_lib PUBLIC "$<$<CXX_COMPILER_ID:Clang>:-fno-direct-access-external-data>")`

CMake: Test the linker too for -mno-direct-extern-access The GNU binutils ld linker needed a patch after the tagging of 2.38 to make the new feature work. Before this patch, the linker will fail to link when protected visibility symbols are used in the library, so don't enable the feature unless the linker is recent enough. GNU binutils gold from that version passes this test. LLVM lld is unknown (I didn't test), but LLVM was consulted in developing the feature. Fixes: QTBUG-103493 Change-Id: Ibcde9b9795ad42ac9978fffd16f1c80ca20953ff Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org> Reviewed-by: Marc Mutz <marc.mutz@qt.io> 2022-05-23 16:14:54 +00:00			`target_link_libraries(no_extern_access_main no_extern_access_lib)`