| # 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 -U__STDC_LIB_EXT1__) |
| 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 keep DWARF information (enable debug info) |
| set_compiler_property(PROPERTY debug -g) |
| |
| # 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" ) |
| |
| if(CONFIG_ARC) |
| set_property(TARGET compiler-cpp PROPERTY required "-Hoff=Stackcheck_alloca") |
| endif() |
| |
| # 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) |
