9d835fe464
Moving specs argument to compiler and linker properties so that the compiler and linker in use can decide how the flags are mapped / handled for the compiler and linker in use. This avoids specifying `--specs=spec.picolibc` for clang which prints a warning about an unused argument. Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
129 lines
4.8 KiB
CMake
129 lines
4.8 KiB
CMake
# First step is to inherit all properties from gcc, as clang is compatible with most flags.
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include(${ZEPHYR_BASE}/cmake/compiler/gcc/compiler_flags.cmake)
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# Now, let's overwrite the flags that are different in clang.
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# No property flag, clang doesn't understand fortify at all
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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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# No printf-return-value optimizations in clang
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set_compiler_property(PROPERTY no_printf_return_value)
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# No property flag, this is used by the POSIX arch based targets when building with the host libC,
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# But clang has problems compiling these with -fno-freestanding.
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check_set_compiler_property(PROPERTY hosted)
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# clang flags for coverage generation
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if (CONFIG_COVERAGE_NATIVE_SOURCE)
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set_compiler_property(PROPERTY coverage -fprofile-instr-generate -fcoverage-mapping)
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else()
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set_compiler_property(PROPERTY coverage --coverage -fno-inline)
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endif()
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# clang flag for colourful diagnostic messages
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set_compiler_property(PROPERTY diagnostic -fcolor-diagnostics)
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# clang flag to save temporary object files
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set_compiler_property(PROPERTY save_temps -save-temps)
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# clang doesn't handle the -T flag
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set_compiler_property(PROPERTY linker_script -Wl,-T)
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#######################################################
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# This section covers flags related to warning levels #
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#######################################################
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# clang option standard warning base in Zephyr
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check_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-unused-but-set-variable
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-Wno-typedef-redefinition
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-Wno-deprecated-non-prototype
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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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# clang 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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-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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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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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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check_set_compiler_property(PROPERTY warning_extended
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#FIXME: need to fix all of those
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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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set_compiler_property(PROPERTY warning_error_coding_guideline
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-Werror=vla
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-Wimplicit-fallthrough
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-Wconversion
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-Woverride-init
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)
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set_compiler_property(PROPERTY no_global_merge "-mno-global-merge")
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set_compiler_property(PROPERTY specs)
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