| # SPDX-License-Identifier: GPL-2.0 |
| |
| # Enable available and selected Clang Propeller features. |
| ifdef CLANG_PROPELLER_PROFILE_PREFIX |
| CFLAGS_PROPELLER_CLANG := -fbasic-block-sections=list=$(CLANG_PROPELLER_PROFILE_PREFIX)_cc_profile.txt -ffunction-sections |
| KBUILD_LDFLAGS += --symbol-ordering-file=$(CLANG_PROPELLER_PROFILE_PREFIX)_ld_profile.txt --no-warn-symbol-ordering |
| else |
| # Starting with Clang v20, the '-fbasic-block-sections=labels' option is |
| # deprecated. Use the recommended '-fbasic-block-address-map' option. |
| # Link: https://github.com/llvm/llvm-project/pull/110039 |
| ifeq ($(call clang-min-version, 200000),y) |
| CFLAGS_PROPELLER_CLANG := -fbasic-block-address-map |
| else |
| CFLAGS_PROPELLER_CLANG := -fbasic-block-sections=labels |
| endif |
| endif |
| |
| # Propeller requires debug information to embed module names in the profiles. |
| # If CONFIG_DEBUG_INFO is not enabled, set -gmlt option. Skip this for AutoFDO, |
| # as the option should already be set. |
| ifndef CONFIG_DEBUG_INFO |
| ifndef CONFIG_AUTOFDO_CLANG |
| CFLAGS_PROPELLER_CLANG += -gmlt |
| endif |
| endif |
| |
| ifdef CONFIG_LTO_CLANG_THIN |
| ifdef CLANG_PROPELLER_PROFILE_PREFIX |
| KBUILD_LDFLAGS += --lto-basic-block-sections=$(CLANG_PROPELLER_PROFILE_PREFIX)_cc_profile.txt |
| else |
| ifeq ($(call test-ge, $(CONFIG_LLD_VERSION), 200000),y) |
| KBUILD_LDFLAGS += --lto-basic-block-address-map |
| else |
| KBUILD_LDFLAGS += --lto-basic-block-sections=labels |
| endif |
| endif |
| endif |
| |
| export CFLAGS_PROPELLER_CLANG |
