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Check proper ranges support on CMake time

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Clang < 16 causes issues with that
Compile errors further down the stack are /super/ annoying to
understand. Because we make heavy used of it here, adding compat logic
as in
https://invent.kde.org/plasma/plasma-workspace/-/merge_requests/4688 is
overkill.
This commit is contained in:
Alexander Lohnau 2024-09-08 15:34:53 +02:00
parent 9f6c969aba
commit f9b11c14ad
1 changed files with 17 additions and 0 deletions
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17
CMakeLists.txt
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@ -22,6 +22,7 @@ include(CMakePackageConfigHelpers)
include(FeatureSummary)
include(WriteBasicConfigVersionFile)
include(GenerateExportHeader)
include(CheckCXXSourceCompiles)
include(CheckCXXCompilerFlag)
include(CheckIncludeFile)
include(CheckIncludeFiles)
@ -433,6 +434,22 @@ add_feature_info("SCHED_RESET_ON_FORK"
HAVE_SCHED_RESET_ON_FORK
"Required for running kwin_wayland with real-time scheduling")
# clang < 16 does not support ranges and compiling KWin will fail in the middle of the build.
# clang 14 is still the default clang version on KDE Neon and Clazy is build with it
check_cxx_source_compiles("
#include <ranges>
#include <vector>
int main() {
std::vector<int> numbers = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
auto even_numbers = numbers | std::views::filter([](int n) { return n % 2 == 0; });
auto squared_numbers = even_numbers | std::views::transform([](int n) { return n * n; });
}
" HAS_RANGES_SUPPORT)
if(NOT HAS_RANGES_SUPPORT)
message(FATAL_ERROR "Compiler does not support C++20 ranges")
endif()
check_cxx_source_compiles("
#include <fcntl.h>
#include <sys/mman.h>