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c862ae0c42
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
109 lines
5.2 KiB
CMake
109 lines
5.2 KiB
CMake
# Possible values:
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# - `address` (ASan)
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# - `memory` (MSan)
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# - `thread` (TSan)
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# - `undefined` (UBSan)
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# - "" (no sanitizing)
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option (SANITIZE "Enable one of the code sanitizers" "")
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set (SAN_FLAGS "${SAN_FLAGS} -g -fno-omit-frame-pointer -DSANITIZER")
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# gcc with -nodefaultlibs does not add sanitizer libraries
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# with -static-libasan and similar
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macro(add_explicit_sanitizer_library lib)
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target_link_libraries(global-libs INTERFACE "-Wl,-static -l${lib} -Wl,-Bdynamic")
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endmacro()
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if (SANITIZE)
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if (SANITIZE STREQUAL "address")
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set (ASAN_FLAGS "-fsanitize=address -fsanitize-address-use-after-scope")
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set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${SAN_FLAGS} ${ASAN_FLAGS}")
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set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${SAN_FLAGS} ${ASAN_FLAGS}")
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if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
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set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${ASAN_FLAGS}")
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endif()
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if (MAKE_STATIC_LIBRARIES AND CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
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set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static-libasan")
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endif ()
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if (COMPILER_GCC)
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add_explicit_sanitizer_library(asan)
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endif()
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elseif (SANITIZE STREQUAL "memory")
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# MemorySanitizer flags are set according to the official documentation:
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# https://clang.llvm.org/docs/MemorySanitizer.html#usage
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#
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# For now, it compiles with `cmake -DSANITIZE=memory -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCMAKE_CXX_FLAGS_ADD="-O1" -DCMAKE_C_FLAGS_ADD="-O1"`
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# Compiling with -DCMAKE_BUILD_TYPE=Debug leads to ld.lld failures because
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# of large files (was not tested with ld.gold). This is why we compile with
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# RelWithDebInfo, and downgrade optimizations to -O1 but not to -Og, to
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# keep the binary size down.
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# TODO: try compiling with -Og and with ld.gold.
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set (MSAN_FLAGS "-fsanitize=memory -fsanitize-memory-track-origins -fno-optimize-sibling-calls -fsanitize-blacklist=${CMAKE_SOURCE_DIR}/tests/msan_suppressions.txt")
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set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${SAN_FLAGS} ${MSAN_FLAGS}")
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set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${SAN_FLAGS} ${MSAN_FLAGS}")
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if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
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set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=memory")
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endif()
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if (MAKE_STATIC_LIBRARIES AND CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
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set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static-libmsan")
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endif ()
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elseif (SANITIZE STREQUAL "thread")
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set (TSAN_FLAGS "-fsanitize=thread")
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if (COMPILER_CLANG)
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set (TSAN_FLAGS "${TSAN_FLAGS} -fsanitize-blacklist=${CMAKE_SOURCE_DIR}/tests/tsan_suppressions.txt")
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else()
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set (MESSAGE "TSAN suppressions was not passed to the compiler (since the compiler is not clang)\n")
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set (MESSAGE "${MESSAGE}Use the following command to pass them manually:\n")
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set (MESSAGE "${MESSAGE} export TSAN_OPTIONS=\"$TSAN_OPTIONS suppressions=${CMAKE_SOURCE_DIR}/tests/tsan_suppressions.txt\"")
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message (WARNING "${MESSAGE}")
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endif()
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set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${SAN_FLAGS} ${TSAN_FLAGS}")
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set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${SAN_FLAGS} ${TSAN_FLAGS}")
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if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
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set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=thread")
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endif()
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if (MAKE_STATIC_LIBRARIES AND CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
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set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static-libtsan")
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endif ()
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if (COMPILER_GCC)
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add_explicit_sanitizer_library(tsan)
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endif()
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elseif (SANITIZE STREQUAL "undefined")
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set (UBSAN_FLAGS "-fsanitize=undefined -fno-sanitize-recover=all -fno-sanitize=float-divide-by-zero")
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if (COMPILER_CLANG)
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set (UBSAN_FLAGS "${UBSAN_FLAGS} -fsanitize-blacklist=${CMAKE_SOURCE_DIR}/tests/ubsan_suppressions.txt")
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else()
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set (MESSAGE "UBSAN suppressions was not passed to the compiler (since the compiler is not clang)\n")
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set (MESSAGE "${MESSAGE}Use the following command to pass them manually:\n")
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set (MESSAGE "${MESSAGE} export UBSAN_OPTIONS=\"$UBSAN_OPTIONS suppressions=${CMAKE_SOURCE_DIR}/tests/ubsan_suppressions.txt\"")
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message (WARNING "${MESSAGE}")
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endif()
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set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${SAN_FLAGS} ${UBSAN_FLAGS}")
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set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${SAN_FLAGS} ${UBSAN_FLAGS}")
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if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
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set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=undefined")
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endif()
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if (MAKE_STATIC_LIBRARIES AND CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
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set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static-libubsan")
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endif ()
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if (COMPILER_GCC)
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add_explicit_sanitizer_library(ubsan)
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endif()
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# llvm-tblgen, that is used during LLVM build, doesn't work with UBSan.
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set (ENABLE_EMBEDDED_COMPILER 0 CACHE BOOL "")
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else ()
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message (FATAL_ERROR "Unknown sanitizer type: ${SANITIZE}")
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endif ()
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endif()
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