211 lines
7.9 KiB
CMake
211 lines
7.9 KiB
CMake
# List the warnings that are not supported for C++ compilations
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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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)
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###################################################
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# Setting compiler properties for MWDT 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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set_compiler_property(PROPERTY optimization_debug -O0)
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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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# options for warnings
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# base options
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set_compiler_property(PROPERTY warning_base
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-Wformat
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-Wformat-security
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-Wno-format-zero-length
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-Wno-unaligned-pointer-conversion
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-Wno-incompatible-pointer-types-discards-qualifiers
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-Wno-typedef-redefinition
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)
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# C implicit promotion rules will want to make floats into doubles very easily
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check_set_compiler_property(APPEND PROPERTY warning_base -Wdouble-promotion)
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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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# level 1 warning options
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set_compiler_property(PROPERTY warning_dw_1
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-Wextra
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-Wunused
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-Wno-unused-parameter
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-Wmissing-declarations
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-Wmissing-format-attribute
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)
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check_set_compiler_property(APPEND PROPERTY warning_dw_1
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-Wold-style-definition
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-Wmissing-prototypes
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-Wmissing-include-dirs
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-Wunused-but-set-variable
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-Wno-missing-field-initializers
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)
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# level 2 warning options
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set_compiler_property(PROPERTY warning_dw_2
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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_2
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-Wlogical-op
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-Wmissing-field-initializers
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)
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# level 3 warning options
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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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# extended warning options
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check_set_compiler_property(PROPERTY warning_extended
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-Wno-sometimes-uninitialized
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-Wno-shift-overflow
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-Wno-missing-braces
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-Wno-self-assign
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-Wno-address-of-packed-member
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-Wno-unused-function
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-Wno-initializer-overrides
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-Wno-section
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-Wno-unknown-warning-option
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-Wno-unused-variable
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-Wno-format-invalid-specifier
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-Wno-gnu
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# comparison of unsigned expression < 0 is always false
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-Wno-tautological-compare
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)
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check_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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###########################################################################
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# This section covers flags related to C or C++ standards / standard libs #
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###########################################################################
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set_compiler_property(PROPERTY cstd -std=)
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if (NOT CONFIG_ARCMWDT_LIBC)
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set_compiler_property(PROPERTY nostdinc -Hno_default_include -Hnoarcexlib -U__STDC_LIB_EXT1__)
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set_compiler_property(APPEND PROPERTY nostdinc_include ${NOSTDINC})
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endif()
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# C++ std options
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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")
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set_property(TARGET compiler-cpp PROPERTY dialect_cpp14 "-std=c++14")
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set_property(TARGET compiler-cpp PROPERTY dialect_cpp17 "-std=c++17")
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#no support of C++2a, C++20, C++2b
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set_property(TARGET compiler-cpp PROPERTY dialect_cpp2a "")
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set_property(TARGET compiler-cpp PROPERTY dialect_cpp20 "")
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set_property(TARGET compiler-cpp PROPERTY dialect_cpp2b "")
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# Flag for disabling strict aliasing rule in C and C++
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set_compiler_property(PROPERTY no_strict_aliasing -fno-strict-aliasing)
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# Flags for set extra warnigs (ARCMWDT asm can't recognize --fatal-warnings. Skip it)
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set_property(TARGET compiler PROPERTY warnings_as_errors -Werror)
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set_property(TARGET asm PROPERTY warnings_as_errors -Werror)
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# Disable exceptions 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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# mwdt flag for a freestanding application
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# do not link in supplied run-time startup files
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set_compiler_property(PROPERTY freestanding -Hnocrt)
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# Flag to keep DWARF information (enable debug info)
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set_compiler_property(PROPERTY debug -g)
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# compile common globals like normal definitions
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set_compiler_property(PROPERTY no_common -fno-common)
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# mwdt's coverage mechanism is different with gnu
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# at present, zephyr only support gnu coverage
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set_compiler_property(PROPERTY coverage "")
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# mwdt 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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# Security canaries.
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#no support of -mstack-protector-guard=global"
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set_compiler_property(PROPERTY security_canaries -fstack-protector-all)
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#no support of _FORTIFY_SOURCE"
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set_compiler_property(PROPERTY security_fortify_compile_time)
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set_compiler_property(PROPERTY security_fortify_run_time)
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# Required C++ flags when using mwdt
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set_property(TARGET compiler-cpp PROPERTY required "-Hcplus" )
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if(CONFIG_ARC)
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set_property(TARGET compiler-cpp PROPERTY required "-Hoff=Stackcheck_alloca")
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endif()
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# Compiler flag for turning off thread-safe initialization of local statics
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set_property(TARGET compiler-cpp PROPERTY no_threadsafe_statics "-fno-threadsafe-statics")
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# ARC MWDT does not support -fno-pic and -fno-pie flags,
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# but it has PIE disabled by default - so no extra flags are required here.
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set_compiler_property(PROPERTY no_position_independent "")
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set_compiler_property(PROPERTY no_global_merge "")
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#################################
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# This section covers asm flags #
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#################################
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# Required ASM flags when using mwdt
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set_property(TARGET asm PROPERTY required "-Hasmcpp")
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if(CONFIG_ARCMWDT_LIBC)
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# We rely on the default C/C++ include locations which are provided by MWDT if we do build with
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# MW C / C++ libraries. However, for that case we still need to explicitly set header directory
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# to ASM builds (which may use 'stdbool.h').
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set_property(TARGET asm APPEND PROPERTY required "-I${NOSTDINC}")
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endif()
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# Remove after testing that -Wshadow works
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set_compiler_property(PROPERTY warning_shadow_variables)
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set_compiler_property(PROPERTY no_builtin -fno-builtin)
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set_compiler_property(PROPERTY no_builtin_malloc -fno-builtin-malloc)
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