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[libcxx][CI] Use lld for everything in the ARM picolib builds #158320

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Merged
merged 1 commit into from
Sep 15, 2025
Merged

[libcxx][CI] Use lld for everything in the ARM picolib builds #158320

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1 change: 1 addition & 0 deletions libcxx/cmake/caches/Armv7M-picolibc.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@ set(CMAKE_C_COMPILER_TARGET "armv7m-none-eabi" CACHE STRING "")
set(CMAKE_C_FLAGS "-mfloat-abi=soft" CACHE STRING "")
set(CMAKE_SYSTEM_NAME Generic CACHE STRING "")
set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY CACHE STRING "")
set(LLVM_USE_LINKER "lld" CACHE STRING "")
set(COMPILER_RT_BAREMETAL_BUILD ON CACHE BOOL "")
set(COMPILER_RT_BUILD_LIBFUZZER OFF CACHE BOOL "")
set(COMPILER_RT_BUILD_PROFILE OFF CACHE BOOL "")
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2 changes: 1 addition & 1 deletion libcxx/test/configs/armv7m-picolibc-libc++.cfg.in
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Expand Up @@ -13,7 +13,7 @@ config.substitutions.append(('%{compile_flags}',
' -Wno-atomic-alignment'
))
config.substitutions.append(('%{link_flags}',
'-nostdlib -nostdlib++ -L %{lib-dir} -lc++ -lc++abi'
'-fuse-ld=lld -nostdlib -nostdlib++ -L %{lib-dir} -lc++ -lc++abi'
' -lc -lm -lclang_rt.builtins -lsemihost -lcrt0-semihost' +
' -T {}'.format(libc_linker_script) +
' -Wl,--defsym=__flash=0x0'
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2 changes: 1 addition & 1 deletion libcxx/utils/ci/build-picolibc.sh
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Expand Up @@ -81,7 +81,7 @@ cat <<EOF > "${picolibc_build_dir}/meson-cross-build.txt"
c = ['${CC:-cc}', '--target=${target}', '-mfloat-abi=soft', '-nostdlib']
ar = 'llvm-ar'
as = 'llvm-as'
ld = 'lld'
c_ld = 'lld'
strip = 'llvm-strip'
[host_machine]
system = 'none'
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2 changes: 1 addition & 1 deletion libcxxabi/test/configs/armv7m-picolibc-libc++abi.cfg.in
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Expand Up @@ -8,7 +8,7 @@ config.substitutions.append(('%{compile_flags}',
'-nostdinc++ -I %{include} -I %{cxx-include} -I %{cxx-target-include} %{maybe-include-libunwind} -I %{libcxx}/test/support -I %{libcxx}/src -D_LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS'
))
config.substitutions.append(('%{link_flags}',
'-nostdlib -nostdlib++ -L %{lib} -lc++ -lc++abi'
'-fuse-ld=lld -nostdlib -nostdlib++ -L %{lib} -lc++ -lc++abi'
' -lc -lm -lclang_rt.builtins -lsemihost -lcrt0-semihost' +
' -T {}'.format(libc_linker_script) +
' -Wl,--defsym=__flash=0x0'
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2 changes: 1 addition & 1 deletion libunwind/test/configs/armv7m-picolibc-libunwind.cfg.in
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Expand Up @@ -8,7 +8,7 @@ config.substitutions.append(('%{compile_flags}',
'-nostdinc++ -I %{include}'
))
config.substitutions.append(('%{link_flags}',
'-nostdlib -nostdlib++ -L %{lib} -lunwind'
'-fuse-ld=lld -nostdlib -nostdlib++ -L %{lib} -lunwind'
' -lc -lm -lclang_rt.builtins -lsemihost -lcrt0-semihost' +
' -T {}'.format(libc_linker_script) +
' -Wl,--defsym=__flash=0x0'
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