19c01546dSAndrii Nakryiko# SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) 23290996eSJean-Philippe Bruckerinclude ../../scripts/Makefile.include 33290996eSJean-Philippe Brucker 4*85e59344SJean-Philippe BruckerOUTPUT ?= $(abspath .output)/ 5*85e59344SJean-Philippe Brucker 607fdbee1SAndrey IgnatovCLANG ?= clang 707fdbee1SAndrey IgnatovLLC ?= llc 807fdbee1SAndrey IgnatovLLVM_STRIP ?= llvm-strip 9*85e59344SJean-Philippe BruckerBPFTOOL_OUTPUT := $(OUTPUT)bpftool/ 10*85e59344SJean-Philippe BruckerDEFAULT_BPFTOOL := $(BPFTOOL_OUTPUT)bpftool 119c01546dSAndrii NakryikoBPFTOOL ?= $(DEFAULT_BPFTOOL) 129c01546dSAndrii NakryikoLIBBPF_SRC := $(abspath ../../lib/bpf) 13*85e59344SJean-Philippe BruckerBPFOBJ_OUTPUT := $(OUTPUT)libbpf/ 14*85e59344SJean-Philippe BruckerBPFOBJ := $(BPFOBJ_OUTPUT)libbpf.a 15*85e59344SJean-Philippe BruckerBPF_INCLUDE := $(BPFOBJ_OUTPUT) 16b4563facSSong LiuINCLUDES := -I$(OUTPUT) -I$(BPF_INCLUDE) -I$(abspath ../../lib) \ 17b4563facSSong Liu -I$(abspath ../../include/uapi) 189c01546dSAndrii NakryikoCFLAGS := -g -Wall 199c01546dSAndrii Nakryiko 209c01546dSAndrii Nakryiko# Try to detect best kernel BTF source 219c01546dSAndrii NakryikoKERNEL_REL := $(shell uname -r) 22a835d38dSToke Høiland-JørgensenVMLINUX_BTF_PATHS := /sys/kernel/btf/vmlinux /boot/vmlinux-$(KERNEL_REL) 23a835d38dSToke Høiland-JørgensenVMLINUX_BTF_PATH := $(or $(VMLINUX_BTF),$(firstword \ 24a835d38dSToke Høiland-Jørgensen $(wildcard $(VMLINUX_BTF_PATHS)))) 259c01546dSAndrii Nakryiko 269c01546dSAndrii Nakryikoifeq ($(V),1) 279c01546dSAndrii NakryikoQ = 289c01546dSAndrii Nakryikoelse 299c01546dSAndrii NakryikoQ = @ 309c01546dSAndrii NakryikoMAKEFLAGS += --no-print-directory 319c01546dSAndrii Nakryikosubmake_extras := feature_display=0 329c01546dSAndrii Nakryikoendif 339c01546dSAndrii Nakryiko 349c01546dSAndrii Nakryiko.DELETE_ON_ERROR: 359c01546dSAndrii Nakryiko 369c01546dSAndrii Nakryiko.PHONY: all clean runqslower 379c01546dSAndrii Nakryikoall: runqslower 389c01546dSAndrii Nakryiko 399c01546dSAndrii Nakryikorunqslower: $(OUTPUT)/runqslower 409c01546dSAndrii Nakryiko 419c01546dSAndrii Nakryikoclean: 423290996eSJean-Philippe Brucker $(call QUIET_CLEAN, runqslower) 43*85e59344SJean-Philippe Brucker $(Q)$(RM) -r $(BPFOBJ_OUTPUT) $(BPFTOOL_OUTPUT) 44*85e59344SJean-Philippe Brucker $(Q)$(RM) $(OUTPUT)*.o $(OUTPUT)*.d 45*85e59344SJean-Philippe Brucker $(Q)$(RM) $(OUTPUT)*.skel.h $(OUTPUT)vmlinux.h 46*85e59344SJean-Philippe Brucker $(Q)$(RM) $(OUTPUT)runqslower 47*85e59344SJean-Philippe Brucker $(Q)$(RM) -r .output 489c01546dSAndrii Nakryiko 49b6580cd8SToke Høiland-Jørgensen$(OUTPUT)/runqslower: $(OUTPUT)/runqslower.o $(BPFOBJ) 503290996eSJean-Philippe Brucker $(QUIET_LINK)$(CC) $(CFLAGS) $^ -lelf -lz -o $@ 519c01546dSAndrii Nakryiko 529c01546dSAndrii Nakryiko$(OUTPUT)/runqslower.o: runqslower.h $(OUTPUT)/runqslower.skel.h \ 539c01546dSAndrii Nakryiko $(OUTPUT)/runqslower.bpf.o 549c01546dSAndrii Nakryiko 559c01546dSAndrii Nakryiko$(OUTPUT)/runqslower.bpf.o: $(OUTPUT)/vmlinux.h runqslower.h 569c01546dSAndrii Nakryiko 579c01546dSAndrii Nakryiko$(OUTPUT)/%.skel.h: $(OUTPUT)/%.bpf.o | $(BPFTOOL) 583290996eSJean-Philippe Brucker $(QUIET_GEN)$(BPFTOOL) gen skeleton $< > $@ 599c01546dSAndrii Nakryiko 60b6580cd8SToke Høiland-Jørgensen$(OUTPUT)/%.bpf.o: %.bpf.c $(BPFOBJ) | $(OUTPUT) 613290996eSJean-Philippe Brucker $(QUIET_GEN)$(CLANG) -g -O2 -target bpf $(INCLUDES) \ 629c01546dSAndrii Nakryiko -c $(filter %.c,$^) -o $@ && \ 639c01546dSAndrii Nakryiko $(LLVM_STRIP) -g $@ 649c01546dSAndrii Nakryiko 659c01546dSAndrii Nakryiko$(OUTPUT)/%.o: %.c | $(OUTPUT) 663290996eSJean-Philippe Brucker $(QUIET_CC)$(CC) $(CFLAGS) $(INCLUDES) -c $(filter %.c,$^) -o $@ 679c01546dSAndrii Nakryiko 68*85e59344SJean-Philippe Brucker$(OUTPUT) $(BPFOBJ_OUTPUT) $(BPFTOOL_OUTPUT): 69*85e59344SJean-Philippe Brucker $(QUIET_MKDIR)mkdir -p $@ 709c01546dSAndrii Nakryiko 71a835d38dSToke Høiland-Jørgensen$(OUTPUT)/vmlinux.h: $(VMLINUX_BTF_PATH) | $(OUTPUT) $(BPFTOOL) 72a835d38dSToke Høiland-Jørgensen $(Q)if [ ! -e "$(VMLINUX_BTF_PATH)" ] ; then \ 73a835d38dSToke Høiland-Jørgensen echo "Couldn't find kernel BTF; set VMLINUX_BTF to" \ 74a835d38dSToke Høiland-Jørgensen "specify its location." >&2; \ 75a835d38dSToke Høiland-Jørgensen exit 1;\ 76a835d38dSToke Høiland-Jørgensen fi 773290996eSJean-Philippe Brucker $(QUIET_GEN)$(BPFTOOL) btf dump file $(VMLINUX_BTF_PATH) format c > $@ 789c01546dSAndrii Nakryiko 79*85e59344SJean-Philippe Brucker$(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(BPFOBJ_OUTPUT) 80*85e59344SJean-Philippe Brucker $(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC) OUTPUT=$(BPFOBJ_OUTPUT) $@ 819c01546dSAndrii Nakryiko 82*85e59344SJean-Philippe Brucker$(DEFAULT_BPFTOOL): | $(BPFTOOL_OUTPUT) 83*85e59344SJean-Philippe Brucker $(Q)$(MAKE) $(submake_extras) -C ../bpftool OUTPUT=$(BPFTOOL_OUTPUT) 84