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The '-fbasic-block-sections=labels' option has been deprecated in tip of tree clang (20.0.0) [1]. While the option still works, a warning is emitted: clang: warning: argument '-fbasic-block-sections=labels' is deprecated, use '-fbasic-block-address-map' instead [-Wdeprecated] Add a version check to set the proper option. Link: https://github.com/llvm/llvm-project/pull/110039 [1] Signed-off-by: Rong Xu <xur@google.com> Reported-by: Nathan Chancellor <nathan@kernel.org> Suggested-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Tested-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
39 lines
1.4 KiB
Text
39 lines
1.4 KiB
Text
# SPDX-License-Identifier: GPL-2.0
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# Enable available and selected Clang Propeller features.
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ifdef CLANG_PROPELLER_PROFILE_PREFIX
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CFLAGS_PROPELLER_CLANG := -fbasic-block-sections=list=$(CLANG_PROPELLER_PROFILE_PREFIX)_cc_profile.txt -ffunction-sections
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KBUILD_LDFLAGS += --symbol-ordering-file=$(CLANG_PROPELLER_PROFILE_PREFIX)_ld_profile.txt --no-warn-symbol-ordering
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else
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# Starting with Clang v20, the '-fbasic-block-sections=labels' option is
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# deprecated. Use the recommended '-fbasic-block-address-map' option.
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# Link: https://github.com/llvm/llvm-project/pull/110039
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ifeq ($(call clang-min-version, 200000),y)
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CFLAGS_PROPELLER_CLANG := -fbasic-block-address-map
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else
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CFLAGS_PROPELLER_CLANG := -fbasic-block-sections=labels
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endif
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endif
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# Propeller requires debug information to embed module names in the profiles.
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# If CONFIG_DEBUG_INFO is not enabled, set -gmlt option. Skip this for AutoFDO,
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# as the option should already be set.
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ifndef CONFIG_DEBUG_INFO
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ifndef CONFIG_AUTOFDO_CLANG
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CFLAGS_PROPELLER_CLANG += -gmlt
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endif
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endif
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ifdef CONFIG_LTO_CLANG_THIN
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ifdef CLANG_PROPELLER_PROFILE_PREFIX
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KBUILD_LDFLAGS += --lto-basic-block-sections=$(CLANG_PROPELLER_PROFILE_PREFIX)_cc_profile.txt
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else
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ifeq ($(call test-ge, $(CONFIG_LLD_VERSION), 200000),y)
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KBUILD_LDFLAGS += --lto-basic-block-address-map
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else
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KBUILD_LDFLAGS += --lto-basic-block-sections=labels
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endif
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endif
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endif
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export CFLAGS_PROPELLER_CLANG
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