toolchain: improved toolchain abstraction for compilers and linker
First abstraction completed for the toolchains: - gcc - clang Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
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Torsten Rasmussen
Carles Cufí
parent
e917c6c0bc
commit
c55c64e242
34 changed files with 590 additions and 730 deletions
176
cmake/compiler/gcc/compiler_flags.cmake
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176
cmake/compiler/gcc/compiler_flags.cmake
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# Those are flags not to test for CXX compiler.
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list(APPEND CXX_EXCLUDED_OPTIONS
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-Werror=implicit-int
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-Wold-style-definition
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-Wno-pointer-sign
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)
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########################################################
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# Setting compiler properties for gcc / g++ compilers. #
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########################################################
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#####################################################
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# This section covers flags related to optimization #
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#####################################################
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set_compiler_property(PROPERTY no_optimization -O0)
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if(CMAKE_C_COMPILER_VERSION VERSION_LESS "4.8.0")
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set_compiler_property(PROPERTY optimization_debug -O0)
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else()
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set_compiler_property(PROPERTY optimization_debug -Og)
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endif()
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set_compiler_property(PROPERTY optimization_speed -O2)
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set_compiler_property(PROPERTY optimization_size -Os)
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#######################################################
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# This section covers flags related to warning levels #
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#######################################################
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# GCC Option standard warning base in Zephyr
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set_compiler_property(PROPERTY warning_base
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-Wall
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-Wformat
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-Wformat-security
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-Wno-format-zero-length
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-Wno-main
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)
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check_set_compiler_property(APPEND PROPERTY warning_base -Wno-pointer-sign)
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# Prohibit void pointer arithmetic. Illegal in C99
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check_set_compiler_property(APPEND PROPERTY warning_base -Wpointer-arith)
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if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "9.1.0")
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set_compiler_property(APPEND PROPERTY warning_base
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# FIXME: Remove once #16587 is fixed
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-Wno-address-of-packed-member
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)
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endif()
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# GCC options for warning levels 1, 2, 3, when using `-DW=[1|2|3]`
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set_compiler_property(PROPERTY warning_dw_1
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-Waggregate-return
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-Wcast-align
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-Wdisabled-optimization
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-Wnested-externs
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-Wshadow
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)
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check_set_compiler_property(APPEND PROPERTY warning_dw_1
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-Wlogical-op
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-Wmissing-field-initializers
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)
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set_compiler_property(PROPERTY warning_dw_2
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-Wbad-function-cast
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-Wcast-qual
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-Wconversion
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-Wpacked
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-Wpadded
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-Wpointer-arith
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-Wredundant-decls
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-Wswitch-default
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)
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check_set_compiler_property(APPEND PROPERTY warning_dw_2
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-Wpacked-bitfield-compat
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-Wvla
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)
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set_compiler_property(PROPERTY warning_dw_3
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-Wbad-function-cast
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-Wcast-qual
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-Wconversion
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-Wpacked
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-Wpadded
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-Wpointer-arith
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-Wredundant-decls
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-Wswitch-default
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)
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check_set_compiler_property(APPEND PROPERTY warning_dw_3
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-Wpacked-bitfield-compat
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-Wvla
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)
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set_compiler_property(PROPERTY warning_extended -Wno-unused-but-set-variable)
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set_compiler_property(PROPERTY warning_error_implicit_int -Werror=implicit-int)
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set_compiler_property(PROPERTY warning_error_misra_sane -Werror=vla)
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set_compiler_property(PROPERTY warning_error_coding_guideline
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-Werror=vla
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-Wimplicit-fallthrough=2
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-Wconversion
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-Woverride-init
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)
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###########################################################################
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# This section covers flags related to C or C++ standards / standard libs #
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###########################################################################
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# GCC compiler flags for C standard. The specific standard must be appended by user.
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set_compiler_property(PROPERTY cstd -std=)
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if (NOT CONFIG_NEWLIB_LIBC AND
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NOT COMPILER STREQUAL "xcc" AND
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NOT CONFIG_NATIVE_APPLICATION)
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set_compiler_property(PROPERTY nostdinc -nostdinc)
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set_compiler_property(APPEND PROPERTY nostdinc_include ${NOSTDINC})
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endif()
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# Required C++ flags when using gcc
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set_property(TARGET compiler-cpp PROPERTY required "-fcheck-new")
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# GCC compiler flags for C++ dialects
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set_property(TARGET compiler-cpp PROPERTY dialect_cpp98 "-std=c++98")
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set_property(TARGET compiler-cpp PROPERTY dialect_cpp11 "-std=c++11" "-Wno-register")
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set_property(TARGET compiler-cpp PROPERTY dialect_cpp14 "-std=c++14" "-Wno-register")
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set_property(TARGET compiler-cpp PROPERTY dialect_cpp17 "-std=c++17" "-Wno-register")
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set_property(TARGET compiler-cpp PROPERTY dialect_cpp2a "-std=c++2a" "-Wno-register")
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# Disable exeptions flag in C++
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set_property(TARGET compiler-cpp PROPERTY no_exceptions "-fno-exceptions")
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# Disable rtti in C++
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set_property(TARGET compiler-cpp PROPERTY no_rtti "-fno-rtti")
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###################################################
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# This section covers all remaining C / C++ flags #
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###################################################
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# gcc flags for coverage generation
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set_compiler_property(PROPERTY coverage -fprofile-arcs -ftest-coverage -fno-inline)
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# Security canaries.
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set_compiler_property(PROPERTY security_canaries -fstack-protector-all)
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# Only a valid option with GCC 7.x and above, so let's do check and set.
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check_set_compiler_property(APPEND PROPERTY security_canaries -mstack-protector-guard=global)
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if(NOT CONFIG_NO_OPTIMIZATIONS)
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# _FORTIFY_SOURCE: Detect common-case buffer overflows for certain functions
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# _FORTIFY_SOURCE=1 : Compile-time checks (requires -O1 at least)
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# _FORTIFY_SOURCE=2 : Additional lightweight run-time checks
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set_compiler_property(PROPERTY security_fortify _FORTIFY_SOURCE=2)
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endif()
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# gcc flag for a hosted (no-freestanding) application
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check_set_compiler_property(APPEND PROPERTY hosted -fno-freestanding)
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# gcc flag for a freestandingapplication
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set_compiler_property(PROPERTY freestanding -ffreestanding)
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# Flag to enable debugging
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set_compiler_property(PROPERTY debug -g)
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set_compiler_property(PROPERTY no_common -fno-common)
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# GCC compiler flags for imacros. The specific header must be appended by user.
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set_compiler_property(PROPERTY imacros -imacros)
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# GCC compiler flags for sanitizing.
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set_compiler_property(PROPERTY sanitize_address -fsanitize=address)
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set_compiler_property(PROPERTY sanitize_undefined -fsanitize=undefined)
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# Required ASM flags when using gcc
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set_property(TARGET asm PROPERTY required "-xassembler-with-cpp")
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