llvm: Reorganize clang/compiler_flags.cmake (a2c55e01) · Commits · Wenxi XU / zephyr

cmake/compiler/clang/compiler_flags.cmake

+42 −25

Original line number	Diff line number	Diff line
		@@ -3,33 +3,15 @@ include(${ZEPHYR_BASE}/cmake/compiler/gcc/compiler_flags.cmake)

		# Now, let's overwrite the flags that are different in clang.

		# No property flag, clang doesn't understand fortify at all
		set_compiler_property(PROPERTY security_fortify_compile_time)
		set_compiler_property(PROPERTY security_fortify_run_time)
		set_compiler_property(PROPERTY optimization_fast -O3 -ffast-math)

		# No printf-return-value optimizations in clang
		set_compiler_property(PROPERTY no_printf_return_value)

		# No property flag, this is used by the POSIX arch based targets when building with the host libC,
		# But clang has problems compiling these with -fno-freestanding.
		check_set_compiler_property(PROPERTY hosted)

		# clang flags for coverage generation
		if (CONFIG_COVERAGE_NATIVE_SOURCE)
		set_compiler_property(PROPERTY coverage -fprofile-instr-generate -fcoverage-mapping)
		else()
		set_compiler_property(PROPERTY coverage --coverage -fno-inline)
		endif()

		# clang flag for colourful diagnostic messages
		set_compiler_property(PROPERTY diagnostic -fcolor-diagnostics)
		########################################################
		# Setting compiler properties for gcc / g++ compilers. #
		########################################################

		# clang flag to save temporary object files
		set_compiler_property(PROPERTY save_temps -save-temps)
		#####################################################
		# This section covers flags related to optimization #
		#####################################################

		# clang doesn't handle the -T flag
		set_compiler_property(PROPERTY linker_script -Wl,-T)
		set_compiler_property(PROPERTY optimization_fast -O3 -ffast-math)

		#######################################################
		# This section covers flags related to warning levels #
		@@ -115,6 +97,41 @@ set_compiler_property(PROPERTY warning_error_coding_guideline
		-Woverride-init
		)

		###########################################################################
		# This section covers flags related to C or C++ standards / standard libs #
		###########################################################################

		# No printf-return-value optimizations in clang
		set_compiler_property(PROPERTY no_printf_return_value)

		###################################################
		# This section covers all remaining C / C++ flags #
		###################################################

		# clang flags for coverage generation
		if (CONFIG_COVERAGE_NATIVE_SOURCE)
		set_compiler_property(PROPERTY coverage -fprofile-instr-generate -fcoverage-mapping)
		else()
		set_compiler_property(PROPERTY coverage --coverage -fno-inline)
		endif()

		# No property flag, clang doesn't understand fortify at all
		set_compiler_property(PROPERTY security_fortify_compile_time)
		set_compiler_property(PROPERTY security_fortify_run_time)

		# No property flag, this is used by the POSIX arch based targets when building with the host libC,
		# But clang has problems compiling these with -fno-freestanding.
		check_set_compiler_property(PROPERTY hosted)

		# clang flag to save temporary object files
		set_compiler_property(PROPERTY save_temps -save-temps)

		# clang doesn't handle the -T flag
		set_compiler_property(PROPERTY linker_script -Wl,-T)

		# clang flag for colourful diagnostic messages
		set_compiler_property(PROPERTY diagnostic -fcolor-diagnostics)

		set_compiler_property(PROPERTY no_global_merge "-mno-global-merge")

		set_compiler_property(PROPERTY specs)

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