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[ci] Enable libc++ for the clang build on Linux #19870

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[ci] Enable libc++ for the clang build on Linux #19870

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87eefdb
[ci] Enable libc++ for the clang build on Linux
ferdymercury Sep 11, 2025
4fc0544
[ci] try with std 23
ferdymercury Sep 11, 2025
4de9698
Update SearchInstalledSoftware.cmake
ferdymercury Sep 11, 2025
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2 changes: 1 addition & 1 deletion .github/workflows/root-ci.yml
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Expand Up @@ -412,7 +412,7 @@ jobs:
- image: alma10
is_special: true
property: "clang Ninja"
overrides: ["CMAKE_C_COMPILER=clang", "CMAKE_CXX_COMPILER=clang++"]
overrides: ["CMAKE_C_COMPILER=clang", "CMAKE_CXX_COMPILER=clang++", "CMAKE_CXX_STANDARD=23", "libcxx=ON"]
cmake_generator: Ninja
# Fedora Rawhide with Python debug build
- image: rawhide
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2 changes: 1 addition & 1 deletion cmake/modules/SearchInstalledSoftware.cmake
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Expand Up @@ -2211,7 +2211,7 @@ if(NOT ROOT_HAVE_NATIVE_CXX_FILESYSTEM)
set(CMAKE_REQUIRED_LIBRARIES stdc++fs)
check_cxx_source_compiles("${_filesystem_source}" ROOT_NEED_STDCXXFS)
if(NOT ROOT_NEED_STDCXXFS)
message(FATAL_ERROR "Could not determine how to use C++17 <filesystem>")
message(WARNING "Could not determine how to use C++17 <filesystem>")
endif()
endif()

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