ClickHouse/base/glibc-compatibility/CMakeLists.txt
2024-07-25 21:56:42 +02:00

53 lines
2.1 KiB
CMake

if (GLIBC_COMPATIBILITY)
add_subdirectory(memcpy)
if(TARGET memcpy)
set(MEMCPY_LIBRARY memcpy)
endif()
enable_language(ASM)
add_headers_and_sources(glibc_compatibility .)
add_headers_and_sources(glibc_compatibility musl)
if (ARCH_AARCH64)
list (APPEND glibc_compatibility_sources musl/aarch64/syscall.s musl/aarch64/longjmp.s)
set (musl_arch_include_dir musl/aarch64)
elseif (ARCH_AMD64)
list (APPEND glibc_compatibility_sources musl/x86_64/syscall.s musl/x86_64/longjmp.s)
set (musl_arch_include_dir musl/x86_64)
else ()
message (FATAL_ERROR "glibc_compatibility can only be used on x86_64 or aarch64.")
endif ()
if (SANITIZE STREQUAL thread)
# Disable TSAN instrumentation that conflicts with re-exec due to high ASLR entropy using getauxval
# See longer comment in __auxv_init_procfs
# In the case of tsan we need to make sure getauxval is not instrumented as that would introduce tsan
# internal calls to functions that depend on a state that isn't initialized yet
set_source_files_properties(
musl/getauxval.c
PROPERTIES COMPILE_FLAGS "-mllvm -tsan-instrument-func-entry-exit=false")
endif()
# Need to omit frame pointers to match the performance of glibc
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fomit-frame-pointer")
add_library(glibc-compatibility STATIC ${glibc_compatibility_sources})
target_no_warning(glibc-compatibility unused-command-line-argument)
target_no_warning(glibc-compatibility unused-but-set-variable)
target_no_warning(glibc-compatibility builtin-requires-header)
target_include_directories(glibc-compatibility PRIVATE libcxxabi ${musl_arch_include_dir})
if (ENABLE_OPENSSL_DYNAMIC)
target_compile_options(glibc-compatibility PRIVATE -fPIC)
endif ()
target_link_libraries(global-libs INTERFACE glibc-compatibility ${MEMCPY_LIBRARY})
message (STATUS "Some symbols from glibc will be replaced for compatibility")
elseif (CLICKHOUSE_OFFICIAL_BUILD)
message (WARNING "Option GLIBC_COMPATIBILITY must be turned on for production builds.")
endif ()