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build: Respect lld linker if it gets auto-selected (#8011)

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This commit is contained in:
Ayaz Salikhov
2026-08-12 14:03:37 +00:00
committed by Ed Hennis
parent 91360c5126
commit 946827b9bd
1 changed files with 40 additions and 26 deletions
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66
cmake/XrplCompiler.cmake
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@@ -188,32 +188,6 @@ else()
endif()
endif()
# Linker warnings are errors where we control the toolchain and the dependencies: CI and the Nix dev shell.
# On non-Nix macOS we suppress the deployment target warning: an old Conan profile may not pin os.version.
if(is_macos OR is_linux)
if(is_ci OR is_nix_compiler)
if(is_macos)
set(fatal_warnings_flag "-Wl,-fatal_warnings")
else()
set(fatal_warnings_flag "-Wl,--fatal-warnings")
endif()
message(
STATUS
"Treating all linker warnings as errors (${fatal_warnings_flag})"
)
target_link_options(common INTERFACE "${fatal_warnings_flag}")
unset(fatal_warnings_flag)
elseif(is_macos)
set(silence_flag "-Wl,-deployment_target_mismatches,suppress")
message(
STATUS
"Silencing macOS deployment target mismatch warnings (${silence_flag})"
)
target_link_options(common INTERFACE "${silence_flag}")
unset(silence_flag)
endif()
endif()
# Antithesis instrumentation will only be built and deployed using machines running Linux.
if(voidstar)
if(NOT CMAKE_BUILD_TYPE STREQUAL "Debug")
@@ -292,10 +266,50 @@ elseif(use_lld)
)
if("${LD_VERSION}" MATCHES "LLD")
target_link_libraries(common INTERFACE -fuse-ld=lld)
# remembered for the linker flag probe below
set(fuse_ld_flag "-fuse-ld=lld")
endif()
unset(LD_VERSION)
endif()
# Linker warnings are errors where we control the toolchain and the dependencies: CI and the Nix dev shell.
# On non-Nix macOS we suppress the deployment target warning: an old Conan profile may not pin os.version.
# Only the new Apple linker understands the flag, so probe the actual linker (lld may be selected above).
if(is_macos OR is_linux)
if(is_ci OR is_nix_compiler)
if(is_macos)
set(fatal_warnings_flag "-Wl,-fatal_warnings")
else()
set(fatal_warnings_flag "-Wl,--fatal-warnings")
endif()
message(
STATUS
"Treating all linker warnings as errors (${fatal_warnings_flag})"
)
target_link_options(common INTERFACE "${fatal_warnings_flag}")
unset(fatal_warnings_flag)
elseif(is_macos)
set(silence_flag "-Wl,-deployment_target_mismatches,suppress")
set(probe_flags ${fuse_ld_flag} "${silence_flag}")
include(CheckLinkerFlag)
check_linker_flag(
CXX
"${probe_flags}"
have_deployment_target_mismatches
)
if(have_deployment_target_mismatches)
message(
STATUS
"Silencing macOS deployment target mismatch warnings (${silence_flag})"
)
target_link_options(common INTERFACE "${silence_flag}")
endif()
unset(probe_flags)
unset(silence_flag)
endif()
endif()
unset(fuse_ld_flag)
if(assert)
foreach(var_ CMAKE_C_FLAGS_RELEASE CMAKE_CXX_FLAGS_RELEASE)
string(REGEX REPLACE "[-/]DNDEBUG" "" ${var_} "${${var_}}")