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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-31 16:38:12 +00:00
c256429fbd
Commit 4bfe3bd3cc ("tools/bpftool: use version from the kernel
source tree") added version to bpftool. The version used is
equal to the kernel version and obtained by running make kernelversion
against kernel source tree. Version is then communicated
to the sources with a command line define set in CFLAGS.
Use a simply expanded variable for the version, otherwise the
recursive make will run every time CFLAGS are used.
This brings the single-job compilation time for me from almost
16 sec down to less than 4 sec.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
128 lines
3 KiB
Makefile
128 lines
3 KiB
Makefile
include ../../scripts/Makefile.include
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include ../../scripts/utilities.mak
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ifeq ($(srctree),)
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srctree := $(patsubst %/,%,$(dir $(CURDIR)))
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srctree := $(patsubst %/,%,$(dir $(srctree)))
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srctree := $(patsubst %/,%,$(dir $(srctree)))
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endif
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ifeq ($(V),1)
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Q =
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else
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Q = @
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endif
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BPF_DIR = $(srctree)/tools/lib/bpf/
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ifneq ($(OUTPUT),)
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BPF_PATH = $(OUTPUT)
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else
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BPF_PATH = $(BPF_DIR)
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endif
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LIBBPF = $(BPF_PATH)libbpf.a
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BPFTOOL_VERSION := $(shell make --no-print-directory -sC ../../.. kernelversion)
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$(LIBBPF): FORCE
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$(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(OUTPUT) $(OUTPUT)libbpf.a FEATURES_DUMP=$(FEATURE_DUMP_EXPORT)
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$(LIBBPF)-clean:
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$(call QUIET_CLEAN, libbpf)
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$(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(OUTPUT) clean >/dev/null
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prefix ?= /usr/local
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bash_compdir ?= /usr/share/bash-completion/completions
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CC = gcc
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CFLAGS += -O2
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CFLAGS += -W -Wall -Wextra -Wno-unused-parameter -Wshadow -Wno-missing-field-initializers
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CFLAGS += -DPACKAGE='"bpftool"' -D__EXPORTED_HEADERS__ \
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-I$(srctree)/kernel/bpf/ \
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-I$(srctree)/tools/include \
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-I$(srctree)/tools/include/uapi \
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-I$(srctree)/tools/lib/bpf \
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-I$(srctree)/tools/perf
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CFLAGS += -DBPFTOOL_VERSION='"$(BPFTOOL_VERSION)"'
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LIBS = -lelf -lbfd -lopcodes $(LIBBPF)
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INSTALL ?= install
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RM ?= rm -f
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FEATURE_USER = .bpftool
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FEATURE_TESTS = libbfd disassembler-four-args
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FEATURE_DISPLAY = libbfd disassembler-four-args
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check_feat := 1
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NON_CHECK_FEAT_TARGETS := clean uninstall doc doc-clean doc-install doc-uninstall
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ifdef MAKECMDGOALS
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ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),)
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check_feat := 0
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endif
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endif
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ifeq ($(check_feat),1)
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ifeq ($(FEATURES_DUMP),)
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include $(srctree)/tools/build/Makefile.feature
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else
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include $(FEATURES_DUMP)
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endif
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endif
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ifeq ($(feature-disassembler-four-args), 1)
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CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE
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endif
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include $(wildcard $(OUTPUT)*.d)
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all: $(OUTPUT)bpftool
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SRCS = $(wildcard *.c)
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OBJS = $(patsubst %.c,$(OUTPUT)%.o,$(SRCS)) $(OUTPUT)disasm.o
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$(OUTPUT)disasm.o: $(srctree)/kernel/bpf/disasm.c
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$(QUIET_CC)$(COMPILE.c) -MMD -o $@ $<
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$(OUTPUT)bpftool: $(OBJS) $(LIBBPF)
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$(QUIET_LINK)$(CC) $(CFLAGS) -o $@ $^ $(LIBS)
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$(OUTPUT)%.o: %.c
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$(QUIET_CC)$(COMPILE.c) -MMD -o $@ $<
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clean: $(LIBBPF)-clean
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$(call QUIET_CLEAN, bpftool)
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$(Q)$(RM) $(OUTPUT)bpftool $(OUTPUT)*.o $(OUTPUT)*.d
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$(call QUIET_CLEAN, core-gen)
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$(Q)$(RM) $(OUTPUT)FEATURE-DUMP.bpftool
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install: $(OUTPUT)bpftool
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$(call QUIET_INSTALL, bpftool)
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$(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(prefix)/sbin
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$(Q)$(INSTALL) $(OUTPUT)bpftool $(DESTDIR)$(prefix)/sbin/bpftool
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$(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(bash_compdir)
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$(Q)$(INSTALL) -m 0644 bash-completion/bpftool $(DESTDIR)$(bash_compdir)
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uninstall:
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$(call QUIET_UNINST, bpftool)
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$(Q)$(RM) $(DESTDIR)$(prefix)/sbin/bpftool
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$(Q)$(RM) $(DESTDIR)$(bash_compdir)/bpftool
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doc:
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$(call descend,Documentation)
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doc-clean:
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$(call descend,Documentation,clean)
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doc-install:
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$(call descend,Documentation,install)
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doc-uninstall:
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$(call descend,Documentation,uninstall)
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FORCE:
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.PHONY: all FORCE clean install uninstall
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.PHONY: doc doc-clean doc-install doc-uninstall
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.DEFAULT_GOAL := all
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