58 lines
1.5 KiB
Makefile
58 lines
1.5 KiB
Makefile
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# SPDX-License-Identifier: GPL-2.0
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OUTPUT := .output
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CLANG ?= clang
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LLC ?= llc
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LLVM_STRIP ?= llvm-strip
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DEFAULT_BPFTOOL := $(OUTPUT)/sbin/bpftool
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BPFTOOL ?= $(DEFAULT_BPFTOOL)
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LIBBPF_SRC := $(abspath ../../../../tools/lib/bpf)
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BPFOBJ := $(OUTPUT)/libbpf.a
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BPF_INCLUDE := $(OUTPUT)
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INCLUDES := -I$(OUTPUT) -I$(BPF_INCLUDE) -I$(abspath ../../../../tools/lib) \
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-I$(abspath ../../../../tools/include/uapi)
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CFLAGS := -g -Wall
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abs_out := $(abspath $(OUTPUT))
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ifeq ($(V),1)
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Q =
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msg =
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else
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Q = @
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msg = @printf ' %-8s %s%s\n' "$(1)" "$(notdir $(2))" "$(if $(3), $(3))";
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MAKEFLAGS += --no-print-directory
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submake_extras := feature_display=0
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endif
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.DELETE_ON_ERROR:
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.PHONY: all clean
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all: iterators.skel.h
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clean:
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$(call msg,CLEAN)
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$(Q)rm -rf $(OUTPUT) iterators
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iterators.skel.h: $(OUTPUT)/iterators.bpf.o | $(BPFTOOL)
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$(call msg,GEN-SKEL,$@)
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$(Q)$(BPFTOOL) gen skeleton $< > $@
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$(OUTPUT)/iterators.bpf.o: iterators.bpf.c $(BPFOBJ) | $(OUTPUT)
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$(call msg,BPF,$@)
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$(Q)$(CLANG) -g -O2 -target bpf $(INCLUDES) \
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-c $(filter %.c,$^) -o $@ && \
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$(LLVM_STRIP) -g $@
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$(OUTPUT):
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$(call msg,MKDIR,$@)
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$(Q)mkdir -p $(OUTPUT)
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$(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(OUTPUT)
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$(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC) \
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OUTPUT=$(abspath $(dir $@))/ $(abspath $@)
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$(DEFAULT_BPFTOOL):
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$(Q)$(MAKE) $(submake_extras) -C ../../../../tools/bpf/bpftool \
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prefix= OUTPUT=$(abs_out)/ DESTDIR=$(abs_out) install
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