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[sanitizers] COMPILER_RT_ASAN_UNIT_TESTS_USE_HOST_RUNTIME to build only unit tests #161455

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Merged
merged 1 commit into from
Oct 15, 2025
Merged

[sanitizers] COMPILER_RT_ASAN_UNIT_TESTS_USE_HOST_RUNTIME to build only unit tests #161455

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2 changes: 2 additions & 0 deletions compiler-rt/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -83,6 +83,8 @@ mark_as_advanced(COMPILER_RT_BUILD_ORC)
option(COMPILER_RT_BUILD_GWP_ASAN "Build GWP-ASan, and link it into SCUDO" ON)
mark_as_advanced(COMPILER_RT_BUILD_GWP_ASAN)
option(COMPILER_RT_ENABLE_CET "Build Compiler RT with CET enabled" OFF)
option(COMPILER_RT_ASAN_UNIT_TESTS_USE_HOST_RUNTIME "Build asan unit tests without depending upon a just-built asan runtime" OFF)
mark_as_advanced(COMPILER_RT_ASAN_UNIT_TESTS_USE_HOST_RUNTIME)

option(COMPILER_RT_SCUDO_STANDALONE_SYSROOT_PATH "Set custom sysroot for building SCUDO standalone" OFF)
mark_as_advanced(COMPILER_RT_SCUDO_STANDALONE_SYSROOT_PATH)
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14 changes: 12 additions & 2 deletions compiler-rt/lib/asan/tests/CMakeLists.txt
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Expand Up @@ -170,11 +170,21 @@ function(add_asan_tests arch test_runtime)
set(CONFIG_NAME ${ARCH_UPPER_CASE}${OS_NAME}Config)
set(CONFIG_NAME_DYNAMIC ${ARCH_UPPER_CASE}${OS_NAME}DynamicConfig)

# On some platforms, unit tests can be run against the runtime that shipped
# with the host compiler with COMPILER_RT_TEST_STANDALONE_BUILD_LIBS=OFF.
# COMPILER_RT_ASAN_UNIT_TESTS_USE_HOST_RUNTIME=ON removes the dependency
# on `asan`, allowing the tests to be run independently without
# a newly built asan runtime.
set(ASAN_UNIT_TEST_DEPS asan)
if(COMPILER_RT_ASAN_UNIT_TESTS_USE_HOST_RUNTIME)
set(ASAN_UNIT_TEST_DEPS)
endif()

# Closure to keep the values.
function(generate_asan_tests test_objects test_suite testname)
generate_compiler_rt_tests(${test_objects} ${test_suite} ${testname} ${arch}
COMPILE_DEPS ${ASAN_UNITTEST_HEADERS} ${ASAN_IGNORELIST_FILE}
DEPS asan
DEPS ${ASAN_UNIT_TEST_DEPS}
KIND ${TEST_KIND}
${ARGN}
)
Expand Down Expand Up @@ -215,7 +225,7 @@ function(add_asan_tests arch test_runtime)
add_compiler_rt_test(AsanDynamicUnitTests "${dynamic_test_name}" "${arch}"
SUBDIR "${CONFIG_NAME_DYNAMIC}"
OBJECTS ${ASAN_INST_TEST_OBJECTS}
DEPS asan ${ASAN_INST_TEST_OBJECTS}
DEPS ${ASAN_UNIT_TEST_DEPS} ${ASAN_INST_TEST_OBJECTS}
LINK_FLAGS ${ASAN_DYNAMIC_UNITTEST_INSTRUMENTED_LINK_FLAGS} ${TARGET_LINK_FLAGS} ${DYNAMIC_LINK_FLAGS}
)
endif()
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