ClickHouse/cmake/freebsd/default_libs.cmake
Azat Khuzhin c862ae0c42 Explicitly link with -llib$SANITIZER for gcc
gcc with -nodefaultlibs does not add sanitizers library during linkage
with -static-libasan and similar, fix this, by add them explicitly.

From the gcc(1) about -nodefaultlibs:

    Do not use the standard system libraries when linking. Only the
    libraries you specify are passed to the linker, and options specifying
    linkage of the system libraries, such as -static-libgcc or
    -shared-libgcc, are ignored. The standard startup files are used
    normally, unless -nostartfiles is used.

Plus checked it manually, w/o -nodefaultlibs everything works without
this explicit linkage.

After this patch UBSAN under gcc compiled successfully.

v2: freebsd and darwin
2020-12-16 21:31:03 +03:00

41 lines
1.3 KiB
CMake

set (DEFAULT_LIBS "-nodefaultlibs")
if (NOT COMPILER_CLANG)
message (FATAL_ERROR "FreeBSD build is supported only for Clang")
endif ()
if (${CMAKE_SYSTEM_PROCESSOR} STREQUAL "amd64")
execute_process (COMMAND ${CMAKE_CXX_COMPILER} --print-file-name=libclang_rt.builtins-x86_64.a OUTPUT_VARIABLE BUILTINS_LIBRARY OUTPUT_STRIP_TRAILING_WHITESPACE)
else ()
execute_process (COMMAND ${CMAKE_CXX_COMPILER} --print-file-name=libclang_rt.builtins-${CMAKE_SYSTEM_PROCESSOR}.a OUTPUT_VARIABLE BUILTINS_LIBRARY OUTPUT_STRIP_TRAILING_WHITESPACE)
endif ()
set (DEFAULT_LIBS "${DEFAULT_LIBS} ${BUILTINS_LIBRARY} ${COVERAGE_OPTION} -lc -lm -lrt -lpthread")
message(STATUS "Default libraries: ${DEFAULT_LIBS}")
set(CMAKE_CXX_STANDARD_LIBRARIES ${DEFAULT_LIBS})
set(CMAKE_C_STANDARD_LIBRARIES ${DEFAULT_LIBS})
# Unfortunately '-pthread' doesn't work with '-nodefaultlibs'.
# Just make sure we have pthreads at all.
set(THREADS_PREFER_PTHREAD_FLAG ON)
find_package(Threads REQUIRED)
include (cmake/find/unwind.cmake)
include (cmake/find/cxx.cmake)
add_library(global-group INTERFACE)
target_link_libraries(global-group INTERFACE
$<TARGET_PROPERTY:global-libs,INTERFACE_LINK_LIBRARIES>
)
link_libraries(global-group)
# FIXME: remove when all contribs will get custom cmake lists
install(
TARGETS global-group global-libs
EXPORT global
)