2d64237f44
GCC and Clang support the undefined behavior sanitizer in any configuration, the only restriction is that if you want to get nice messages printed, then you need the ubsan library routines which are only present for posix architecture or when using picolibc. This patch adds three new compiler properties: * sanitizer_undefined. Enables the undefined behavior sanitizer. * sanitizer_undefined_library. Calls ubsan library routines on fault. * sanitizer_undefined_trap. Invokes __builtin_trap() on fault. Overhead for using the trapping sanitizer is fairly low and should be considered for use in CI once all of the undefined behavior faults in Zephyr are fixed. Signed-off-by: Keith Packard <keithp@keithp.com>
58 lines
2.2 KiB
CMake
58 lines
2.2 KiB
CMake
# Copyright (c) 2024 Nordic Semiconductor
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#
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# SPDX-License-Identifier: Apache-2.0
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check_set_linker_property(TARGET linker PROPERTY base
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${LINKERFLAGPREFIX},--gc-sections
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${LINKERFLAGPREFIX},--build-id=none
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)
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check_set_linker_property(TARGET linker PROPERTY baremetal
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-nostdlib
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-static
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${LINKERFLAGPREFIX},-X
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${LINKERFLAGPREFIX},-N
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)
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check_set_linker_property(TARGET linker PROPERTY orphan_warning
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${LINKERFLAGPREFIX},--orphan-handling=warn
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)
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check_set_linker_property(TARGET linker PROPERTY orphan_error
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${LINKERFLAGPREFIX},--orphan-handling=error
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)
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check_set_linker_property(TARGET linker PROPERTY memusage "${LINKERFLAGPREFIX},--print-memory-usage")
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check_set_linker_property(TARGET linker PROPERTY sanitizer_undefined -fsanitize=undefined)
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check_set_linker_property(TARGET linker PROPERTY sanitizer_undefined_trap -fsanitize-undefined-trap-on-error)
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check_set_linker_property(TARGET linker PROPERTY sanitizer_undefined_library)
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# -no-pie is not supported until binutils 2.37.
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# If -no-pie is passed to old binutils <= 2.36, it is parsed
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# as separate arguments -n and -o, which results in output file
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# called "-pie".
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if("${GNULD_VERSION_STRING}" VERSION_GREATER_EQUAL 2.37)
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set_property(TARGET linker PROPERTY no_position_independent "${LINKERFLAGPREFIX},-no-pie")
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else()
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set_property(TARGET linker PROPERTY no_position_independent)
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endif()
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set_property(TARGET linker PROPERTY partial_linking "-r")
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set_property(TARGET linker PROPERTY lto_arguments -flto=auto -fno-ipa-sra -ffunction-sections -fdata-sections)
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check_set_linker_property(TARGET linker PROPERTY no_relax ${LINKERFLAGPREFIX},--no-relax)
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check_set_linker_property(TARGET linker PROPERTY sort_alignment
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${LINKERFLAGPREFIX},--sort-common=descending
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${LINKERFLAGPREFIX},--sort-section=alignment
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)
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# Some linker flags might not be purely ld specific, but a combination of
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# linker and compiler, such as:
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# --coverage for clang
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# --gcov for gcc
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# So load those flags now.
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include(${ZEPHYR_BASE}/cmake/linker/${LINKER}/${COMPILER}/linker_flags.cmake OPTIONAL)
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