| # SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) |
| SOURCE_BTF_FILES = $(shell find $(BTFHUB_ARCHIVE)/ -iregex ".*$(subst x86,x86_64,$(ARCH)).*" -type f -name '*.btf.tar.xz') |
| MIN_CORE_BTF_FILES = $(patsubst $(BTFHUB_ARCHIVE)/%.btf.tar.xz, $(OUTPUT)/min_core_btfs/%.btf, $(SOURCE_BTF_FILES)) |
| BPF_O_FILES = $(patsubst %,$(OUTPUT)/%.bpf.o,$(APPS)) |
| |
| .PHONY: all |
| all: $(OUTPUT)/min_core_btf_tar.o |
| |
| ifeq ($(V),1) |
| Q = |
| msg = |
| else |
| Q = @ |
| msg = @printf ' %-8s %s%s\n' "$(1)" "$(notdir $(2))" "$(if $(3), $(3))"; |
| MAKEFLAGS += --no-print-directory |
| endif |
| |
| $(BTFHUB_ARCHIVE)/%.btf: $(BTFHUB_ARCHIVE)/%.btf.tar.xz |
| $(call msg,UNTAR,$@) |
| $(Q)tar xvfJ $< -C "$(@D)" > /dev/null |
| $(Q)touch $@ |
| |
| $(MIN_CORE_BTF_FILES): $(BPF_O_FILES) |
| |
| # Create reduced version of BTF files to be embedded within the tools executables |
| $(OUTPUT)/min_core_btfs/%.btf: $(BTFHUB_ARCHIVE)/%.btf |
| $(call msg,BTFGEN,$@) |
| $(Q)mkdir -p "$(@D)" |
| $(Q)$(BPFTOOL) gen min_core_btf $< $@ $(OUTPUT)/*.bpf.o |
| |
| # Compress reduced BTF files and create an object file with its content |
| $(OUTPUT)/min_core_btf_tar.o: $(MIN_CORE_BTF_FILES) |
| $(call msg,TAR,$@) |
| $(Q)tar c --gz -f $(OUTPUT)/min_core_btfs.tar.gz -C $(OUTPUT)/min_core_btfs/ . |
| $(Q)cd $(OUTPUT) && ld -r -b binary min_core_btfs.tar.gz -o $@ |
| |
| # delete failed targets |
| .DELETE_ON_ERROR: |
| # keep intermediate (.skel.h, .bpf.o, etc) targets |
| .SECONDARY: |
