cbbbdeaae5
This is placeholder for extended warning flags, likely to change between toolchains. The intent here is to abstract Zephyr's dependence on toolchains, thus allowing for easier porting to other, perhaps commercial, toolchains and/or usecases. No functional change expected. Signed-off-by: Danny Oerndrup <daor@demant.com>
91 lines
3.1 KiB
CMake
91 lines
3.1 KiB
CMake
# SPDX-License-Identifier: Apache-2.0
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# Configuration for host installed clang
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#
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set(NOSTDINC "")
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# Note that NOSYSDEF_CFLAG may be an empty string, and
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# set_ifndef() does not work with empty string.
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if(NOT DEFINED NOSYSDEF_CFLAG)
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set(NOSYSDEF_CFLAG -undef)
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endif()
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if(DEFINED TOOLCHAIN_HOME)
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set(find_program_clang_args PATH ${TOOLCHAIN_HOME} NO_DEFAULT_PATH)
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set(find_program_binutils_args PATH ${TOOLCHAIN_HOME})
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endif()
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find_program(CMAKE_C_COMPILER clang ${find_program_clang_args})
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find_program(CMAKE_CXX_COMPILER clang++ ${find_program_clang_args})
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find_program(CMAKE_AR llvm-ar ${find_program_clang_args})
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find_program(CMAKE_LINKER llvm-link ${find_program_clang_args})
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find_program(CMAKE_NM llvm-nm ${find_program_clang_args})
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find_program(CMAKE_OBJDUMP llvm-objdump ${find_program_clang_args})
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find_program(CMAKE_RANLIB llvm-ranlib ${find_program_clang_args})
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find_program(CMAKE_OBJCOPY objcopy ${find_program_binutils_args})
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find_program(CMAKE_READELF readelf ${find_program_binutils_args})
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if(NOT "${ARCH}" STREQUAL "posix")
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foreach(file_name include include-fixed)
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execute_process(
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COMMAND ${CMAKE_C_COMPILER} --print-file-name=${file_name}
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OUTPUT_VARIABLE _OUTPUT
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)
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string(REGEX REPLACE "\n" "" _OUTPUT ${_OUTPUT})
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list(APPEND NOSTDINC ${_OUTPUT})
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endforeach()
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foreach(isystem_include_dir ${NOSTDINC})
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list(APPEND isystem_include_flags -isystem ${isystem_include_dir})
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endforeach()
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# This libgcc code is partially duplicated in compiler/*/target.cmake
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execute_process(
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COMMAND ${CMAKE_C_COMPILER} ${TOOLCHAIN_C_FLAGS} --print-libgcc-file-name
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OUTPUT_VARIABLE LIBGCC_FILE_NAME
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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assert_exists(LIBGCC_FILE_NAME)
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get_filename_component(LIBGCC_DIR ${LIBGCC_FILE_NAME} DIRECTORY)
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assert_exists(LIBGCC_DIR)
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list(APPEND LIB_INCLUDE_DIR "-L\"${LIBGCC_DIR}\"")
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list(APPEND TOOLCHAIN_LIBS gcc)
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set(CMAKE_REQUIRED_FLAGS -nostartfiles -nostdlib ${isystem_include_flags} -Wl,--unresolved-symbols=ignore-in-object-files)
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string(REPLACE ";" " " CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
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endif()
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# Load toolchain_cc-family macros
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macro(toolchain_cc_nostdinc)
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if(NOT "${ARCH}" STREQUAL "posix")
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zephyr_compile_options( -nostdinc)
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endif()
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endmacro()
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# Clang and GCC are almost feature+flag compatible, so reuse freestanding gcc
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include(${ZEPHYR_BASE}/cmake/compiler/gcc/target_security_canaries.cmake)
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include(${ZEPHYR_BASE}/cmake/compiler/gcc/target_optimizations.cmake)
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include(${ZEPHYR_BASE}/cmake/compiler/gcc/target_cpp.cmake)
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include(${ZEPHYR_BASE}/cmake/compiler/gcc/target_asm.cmake)
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include(${ZEPHYR_BASE}/cmake/compiler/gcc/target_baremetal.cmake)
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include(${ZEPHYR_BASE}/cmake/compiler/${COMPILER}/target_warnings.cmake)
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macro(toolchain_cc_security_fortify)
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# No op, clang doesn't understand fortify at all
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endmacro()
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macro(toolchain_cc_no_freestanding_options)
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# No op, this is used by the native_posix, clang has problems
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# compiling the native_posix with -fno-freestanding.
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endmacro()
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