| 1 | # SPDX-License-Identifier: GPL-2.0 |
| 2 | |
| 3 | # Enable available and selected Clang Propeller features. |
| 4 | ifdef CLANG_PROPELLER_PROFILE_PREFIX |
| 5 | CFLAGS_PROPELLER_CLANG := -fbasic-block-sections=list=$(CLANG_PROPELLER_PROFILE_PREFIX)_cc_profile.txt -ffunction-sections |
| 6 | KBUILD_LDFLAGS += --symbol-ordering-file=$(CLANG_PROPELLER_PROFILE_PREFIX)_ld_profile.txt --no-warn-symbol-ordering |
| 7 | else |
| 8 | # Starting with Clang v20, the '-fbasic-block-sections=labels' option is |
| 9 | # deprecated. Use the recommended '-fbasic-block-address-map' option. |
| 10 | # Link: https://github.com/llvm/llvm-project/pull/110039 |
| 11 | ifeq ($(call clang-min-version, 200000),y) |
| 12 | CFLAGS_PROPELLER_CLANG := -fbasic-block-address-map |
| 13 | else |
| 14 | CFLAGS_PROPELLER_CLANG := -fbasic-block-sections=labels |
| 15 | endif |
| 16 | endif |
| 17 | |
| 18 | # Propeller requires debug information to embed module names in the profiles. |
| 19 | # If CONFIG_DEBUG_INFO is not enabled, set -gmlt option. Skip this for AutoFDO, |
| 20 | # as the option should already be set. |
| 21 | ifndef CONFIG_DEBUG_INFO |
| 22 | ifndef CONFIG_AUTOFDO_CLANG |
| 23 | CFLAGS_PROPELLER_CLANG += -gmlt |
| 24 | endif |
| 25 | endif |
| 26 | |
| 27 | ifdef CONFIG_LTO_CLANG_THIN |
| 28 | ifdef CLANG_PROPELLER_PROFILE_PREFIX |
| 29 | KBUILD_LDFLAGS += --lto-basic-block-sections=$(CLANG_PROPELLER_PROFILE_PREFIX)_cc_profile.txt |
| 30 | else |
| 31 | ifeq ($(call test-ge, $(CONFIG_LLD_VERSION), 200000),y) |
| 32 | KBUILD_LDFLAGS += --lto-basic-block-address-map |
| 33 | else |
| 34 | KBUILD_LDFLAGS += --lto-basic-block-sections=labels |
| 35 | endif |
| 36 | endif |
| 37 | endif |
| 38 | |
| 39 | export CFLAGS_PROPELLER_CLANG |