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CMake: Add C/C++ compiler options to C/C++ sources only 

When compiling CUDA sources in a user project, the Qt6::Platform target
would pull in C/C++ related compiler flags, leading to compiler errors.

Make sure that we only add those flags to C/C++ source files.

Fixes: QTBUG-99548
Change-Id: Idbccd65fe8f66abd1da3fce95e563065d1ed3cc6
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
(cherry picked from commit ae294a42f0)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
This commit is contained in:
Joerg Bornemann 2022-01-04 10:30:04 +01:00 committed by Qt Cherry-pick Bot
parent bce4329f60
commit c679193fde
1 changed files with 7 additions and 2 deletions
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9
cmake/QtFlagHandlingHelpers.cmake
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@ -236,7 +236,8 @@ function(qt_set_msvc_cplusplus_options target visibility)
# For MSVC we need to explicitly pass -Zc:__cplusplus to get correct __cplusplus.
# Check qt_config_compile_test for more info.
if(MSVC AND MSVC_VERSION GREATER_EQUAL 1913)
target_compile_options("${target}" ${visibility} "-Zc:__cplusplus" "-permissive-")
set(flags "-Zc:__cplusplus" "-permissive-")
target_compile_options("${target}" ${visibility} "$<$<COMPILE_LANGUAGE:CXX>:${flags}>")
endif()
endfunction()
@ -250,7 +251,11 @@ function(qt_enable_utf8_sources target)
if(utf8_flags)
# Allow opting out by specifying the QT_NO_UTF8_SOURCE target property.
set(genex_condition "$<NOT:$<BOOL:$<TARGET_PROPERTY:QT_NO_UTF8_SOURCE>>>")
set(opt_out_condition "$<NOT:$<BOOL:$<TARGET_PROPERTY:QT_NO_UTF8_SOURCE>>>")
# Only set the compiler option for C and C++.
set(language_condition "$<COMPILE_LANGUAGE:C,CXX>")
# Compose the full condition.
set(genex_condition "$<AND:${opt_out_condition},${language_condition}>")
set(utf8_flags "$<${genex_condition}:${utf8_flags}>")
target_compile_options("${target}" INTERFACE "${utf8_flags}")
endif()