set_property(GLOBAL PROPERTY CSTD gnu99) # List the warnings that are not supported for C++ compilations list(APPEND CXX_EXCLUDED_OPTIONS -Werror=implicit-int -Wold-style-definition ) ################################################### # Setting compiler properties for MWDT compilers. # ################################################### ##################################################### # This section covers flags related to optimization # ##################################################### set_compiler_property(PROPERTY no_optimization -O0) set_compiler_property(PROPERTY optimization_debug -O0) set_compiler_property(PROPERTY optimization_speed -O2) set_compiler_property(PROPERTY optimization_size -Os) ####################################################### # This section covers flags related to warning levels # ####################################################### # options for warnings # base options set_compiler_property(PROPERTY warning_base -Wformat -Wformat-security -Wno-format-zero-length -Wno-unaligned-pointer-conversion -Wno-incompatible-pointer-types-discards-qualifiers -Wno-typedef-redefinition ) # C implicit promotion rules will want to make floats into doubles very easily check_set_compiler_property(APPEND PROPERTY warning_base -Wdouble-promotion) check_set_compiler_property(APPEND PROPERTY warning_base -Wno-pointer-sign) # Prohibit void pointer arithmetic. Illegal in C99 check_set_compiler_property(APPEND PROPERTY warning_base -Wpointer-arith) # level 1 warning options set_compiler_property(PROPERTY warning_dw_1 -Wextra -Wunused -Wno-unused-parameter -Wmissing-declarations -Wmissing-format-attribute ) check_set_compiler_property(APPEND PROPERTY warning_dw_1 -Wold-style-definition -Wmissing-prototypes -Wmissing-include-dirs -Wunused-but-set-variable -Wno-missing-field-initializers ) # level 2 warning options set_compiler_property(PROPERTY warning_dw_2 -Waggregate-return -Wcast-align -Wdisabled-optimization -Wnested-externs -Wshadow ) check_set_compiler_property(APPEND PROPERTY warning_dw_2 -Wlogical-op -Wmissing-field-initializers ) # level 3 warning options set_compiler_property(PROPERTY warning_dw_3 -Wbad-function-cast -Wcast-qual -Wconversion -Wpacked -Wpadded -Wpointer-arith -Wredundant-decls -Wswitch-default ) check_set_compiler_property(APPEND PROPERTY warning_dw_3 -Wpacked-bitfield-compat -Wvla ) # extended warning options check_set_compiler_property(PROPERTY warning_extended -Wno-sometimes-uninitialized -Wno-shift-overflow -Wno-missing-braces -Wno-self-assign -Wno-address-of-packed-member -Wno-unused-function -Wno-initializer-overrides -Wno-section -Wno-unknown-warning-option -Wno-unused-variable -Wno-format-invalid-specifier -Wno-gnu # comparison of unsigned expression < 0 is always false -Wno-tautological-compare ) check_set_compiler_property(PROPERTY warning_error_implicit_int -Werror=implicit-int) set_compiler_property(PROPERTY warning_error_misra_sane -Werror=vla) ########################################################################### # This section covers flags related to C or C++ standards / standard libs # ########################################################################### set_compiler_property(PROPERTY cstd -std=) if (NOT CONFIG_ARCMWDT_LIBC) set_compiler_property(PROPERTY nostdinc -Hno_default_include -Hnoarcexlib) set_compiler_property(APPEND PROPERTY nostdinc_include ${NOSTDINC}) endif() # C++ std options set_property(TARGET compiler-cpp PROPERTY dialect_cpp98 "-std=c++98") set_property(TARGET compiler-cpp PROPERTY dialect_cpp11 "-std=c++11") set_property(TARGET compiler-cpp PROPERTY dialect_cpp14 "-std=c++14") set_property(TARGET compiler-cpp PROPERTY dialect_cpp17 "-std=c++17") #no support of C++2a, C++20, C++2b set_property(TARGET compiler-cpp PROPERTY dialect_cpp2a "") set_property(TARGET compiler-cpp PROPERTY dialect_cpp20 "") set_property(TARGET compiler-cpp PROPERTY dialect_cpp2b "") # Flag for disabling strict aliasing rule in C and C++ set_compiler_property(PROPERTY no_strict_aliasing -fno-strict-aliasing) # Flags for set extra warnigs (ARCMWDT asm can't recognize --fatal-warnings. Skip it) set_property(TARGET compiler PROPERTY warnings_as_errors -Werror) set_property(TARGET asm PROPERTY warnings_as_errors -Werror) # Disable exceptions flag in C++ set_property(TARGET compiler-cpp PROPERTY no_exceptions "-fno-exceptions") # Disable rtti in C++ set_property(TARGET compiler-cpp PROPERTY no_rtti "-fno-rtti") ################################################### # This section covers all remaining C / C++ flags # ################################################### # mwdt flag for a freestanding application # do not link in supplied run-time startup files set_compiler_property(PROPERTY freestanding -Hnocrt) # Flag to enable debugging if(CONFIG_THREAD_LOCAL_STORAGE) # FIXME: Temporary workaround for ARC MWDT toolchain issue - LLDAC linker produce errors on # debugging information (if -g option specified) of thread-local variables. set_compiler_property(PROPERTY debug) else() set_compiler_property(PROPERTY debug -g) endif() # compile common globals like normal definitions set_compiler_property(PROPERTY no_common -fno-common) # mwdt's coverage mechanism is different with gnu # at present, zephyr only support gnu coverage set_compiler_property(PROPERTY coverage "") # mwdt compiler flags for imacros. The specific header must be appended by user. set_compiler_property(PROPERTY imacros -imacros) # Security canaries. #no support of -mstack-protector-guard=global" set_compiler_property(PROPERTY security_canaries -fstack-protector-all) #no support of _FORTIFY_SOURCE" set_compiler_property(PROPERTY security_fortify_compile_time) set_compiler_property(PROPERTY security_fortify_run_time) # Required C++ flags when using mwdt set_property(TARGET compiler-cpp PROPERTY required "-Hcplus" "-Hoff=Stackcheck_alloca") # Compiler flag for turning off thread-safe initialization of local statics set_property(TARGET compiler-cpp PROPERTY no_threadsafe_statics "-fno-threadsafe-statics") # ARC MWDT does not support -fno-pic and -fno-pie flags, # but it has PIE disabled by default - so no extra flags are required here. set_compiler_property(PROPERTY no_position_independent "") set_compiler_property(PROPERTY no_global_merge "") ################################# # This section covers asm flags # ################################# # Required ASM flags when using mwdt set_property(TARGET asm PROPERTY required "-Hasmcpp") if(CONFIG_ARCMWDT_LIBC) # We rely on the default C/C++ include locations which are provided by MWDT if we do build with # MW C / C++ libraries. However, for that case we still need to explicitly set header directory # to ASM builds (which may use 'stdbool.h'). set_property(TARGET asm APPEND PROPERTY required "-I${NOSTDINC}") endif() # Remove after testing that -Wshadow works set_compiler_property(PROPERTY warning_shadow_variables) set_compiler_property(PROPERTY no_builtin -fno-builtin) set_compiler_property(PROPERTY no_builtin_malloc -fno-builtin-malloc)