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-rw-r--r--tools/bpf/bpftool/Makefile223
1 files changed, 223 insertions, 0 deletions
diff --git a/tools/bpf/bpftool/Makefile b/tools/bpf/bpftool/Makefile
new file mode 100644
index 000000000..1896ef69b
--- /dev/null
+++ b/tools/bpf/bpftool/Makefile
@@ -0,0 +1,223 @@
+# SPDX-License-Identifier: GPL-2.0-only
+include ../../scripts/Makefile.include
+
+ifeq ($(srctree),)
+srctree := $(patsubst %/,%,$(dir $(CURDIR)))
+srctree := $(patsubst %/,%,$(dir $(srctree)))
+srctree := $(patsubst %/,%,$(dir $(srctree)))
+endif
+
+ifeq ($(V),1)
+ Q =
+else
+ Q = @
+endif
+
+BPF_DIR = $(srctree)/tools/lib/bpf/
+
+ifneq ($(OUTPUT),)
+ LIBBPF_OUTPUT = $(OUTPUT)/libbpf/
+ LIBBPF_PATH = $(LIBBPF_OUTPUT)
+else
+ LIBBPF_PATH = $(BPF_DIR)
+endif
+
+LIBBPF = $(LIBBPF_PATH)libbpf.a
+
+BPFTOOL_VERSION ?= $(shell make -rR --no-print-directory -sC ../../.. kernelversion)
+
+$(LIBBPF): FORCE
+ $(if $(LIBBPF_OUTPUT),@mkdir -p $(LIBBPF_OUTPUT))
+ $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_OUTPUT) $(LIBBPF_OUTPUT)libbpf.a
+
+$(LIBBPF)-clean:
+ $(call QUIET_CLEAN, libbpf)
+ $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_OUTPUT) clean >/dev/null
+
+prefix ?= /usr/local
+bash_compdir ?= /usr/share/bash-completion/completions
+
+CFLAGS += -O2
+CFLAGS += -W -Wall -Wextra -Wno-unused-parameter -Wno-missing-field-initializers
+CFLAGS += $(filter-out -Wswitch-enum -Wnested-externs,$(EXTRA_WARNINGS))
+CFLAGS += -DPACKAGE='"bpftool"' -D__EXPORTED_HEADERS__ \
+ -I$(if $(OUTPUT),$(OUTPUT),.) \
+ -I$(srctree)/kernel/bpf/ \
+ -I$(srctree)/tools/include \
+ -I$(srctree)/tools/include/uapi \
+ -I$(srctree)/tools/lib \
+ -I$(srctree)/tools/perf
+CFLAGS += -DBPFTOOL_VERSION='"$(BPFTOOL_VERSION)"'
+ifneq ($(EXTRA_CFLAGS),)
+CFLAGS += $(EXTRA_CFLAGS)
+endif
+ifneq ($(EXTRA_LDFLAGS),)
+LDFLAGS += $(EXTRA_LDFLAGS)
+endif
+
+INSTALL ?= install
+RM ?= rm -f
+CLANG ?= clang
+LLVM_STRIP ?= llvm-strip
+
+FEATURE_USER = .bpftool
+FEATURE_TESTS = libbfd disassembler-four-args reallocarray zlib libcap \
+ clang-bpf-co-re
+FEATURE_DISPLAY = libbfd disassembler-four-args zlib libcap \
+ clang-bpf-co-re
+
+check_feat := 1
+NON_CHECK_FEAT_TARGETS := clean uninstall doc doc-clean doc-install doc-uninstall
+ifdef MAKECMDGOALS
+ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),)
+ check_feat := 0
+endif
+endif
+
+ifeq ($(check_feat),1)
+ifeq ($(FEATURES_DUMP),)
+include $(srctree)/tools/build/Makefile.feature
+else
+include $(FEATURES_DUMP)
+endif
+endif
+
+ifeq ($(feature-disassembler-four-args), 1)
+CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE
+endif
+
+ifeq ($(feature-reallocarray), 0)
+CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
+endif
+
+LIBS = $(LIBBPF) -lelf -lz
+ifeq ($(feature-libcap), 1)
+CFLAGS += -DUSE_LIBCAP
+LIBS += -lcap
+endif
+
+include $(wildcard $(OUTPUT)*.d)
+
+all: $(OUTPUT)bpftool
+
+BFD_SRCS = jit_disasm.c
+
+SRCS = $(filter-out $(BFD_SRCS),$(wildcard *.c))
+
+ifeq ($(feature-libbfd),1)
+ LIBS += -lbfd -ldl -lopcodes
+else ifeq ($(feature-libbfd-liberty),1)
+ LIBS += -lbfd -ldl -lopcodes -liberty
+else ifeq ($(feature-libbfd-liberty-z),1)
+ LIBS += -lbfd -ldl -lopcodes -liberty -lz
+endif
+
+ifneq ($(filter -lbfd,$(LIBS)),)
+CFLAGS += -DHAVE_LIBBFD_SUPPORT
+SRCS += $(BFD_SRCS)
+endif
+
+BPFTOOL_BOOTSTRAP := $(if $(OUTPUT),$(OUTPUT)bpftool-bootstrap,./bpftool-bootstrap)
+
+BOOTSTRAP_OBJS = $(addprefix $(OUTPUT),main.o common.o json_writer.o gen.o btf.o)
+OBJS = $(patsubst %.c,$(OUTPUT)%.o,$(SRCS)) $(OUTPUT)disasm.o
+
+VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \
+ $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \
+ ../../../vmlinux \
+ /sys/kernel/btf/vmlinux \
+ /boot/vmlinux-$(shell uname -r)
+VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
+
+ifneq ($(VMLINUX_BTF)$(VMLINUX_H),)
+ifeq ($(feature-clang-bpf-co-re),1)
+
+BUILD_BPF_SKELS := 1
+
+$(OUTPUT)vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL_BOOTSTRAP)
+ifeq ($(VMLINUX_H),)
+ $(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) btf dump file $< format c > $@
+else
+ $(Q)cp "$(VMLINUX_H)" $@
+endif
+
+$(OUTPUT)%.bpf.o: skeleton/%.bpf.c $(OUTPUT)vmlinux.h $(LIBBPF)
+ $(QUIET_CLANG)$(CLANG) \
+ -I$(if $(OUTPUT),$(OUTPUT),.) \
+ -I$(srctree)/tools/include/uapi/ \
+ -I$(LIBBPF_PATH) \
+ -I$(srctree)/tools/lib \
+ -g -O2 -target bpf -c $< -o $@ && $(LLVM_STRIP) -g $@
+
+$(OUTPUT)%.skel.h: $(OUTPUT)%.bpf.o $(BPFTOOL_BOOTSTRAP)
+ $(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) gen skeleton $< > $@
+
+$(OUTPUT)prog.o: $(OUTPUT)profiler.skel.h
+
+$(OUTPUT)pids.o: $(OUTPUT)pid_iter.skel.h
+
+endif
+endif
+
+CFLAGS += $(if $(BUILD_BPF_SKELS),,-DBPFTOOL_WITHOUT_SKELETONS)
+
+$(OUTPUT)disasm.o: $(srctree)/kernel/bpf/disasm.c
+ $(QUIET_CC)$(CC) $(CFLAGS) -c -MMD -o $@ $<
+
+$(OUTPUT)feature.o: | zdep
+
+$(BPFTOOL_BOOTSTRAP): $(BOOTSTRAP_OBJS) $(LIBBPF)
+ $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(BOOTSTRAP_OBJS) $(LIBS)
+
+$(OUTPUT)bpftool: $(OBJS) $(LIBBPF)
+ $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJS) $(LIBS)
+
+$(OUTPUT)%.o: %.c
+ $(QUIET_CC)$(CC) $(CFLAGS) -c -MMD -o $@ $<
+
+feature-detect-clean:
+ $(call QUIET_CLEAN, feature-detect)
+ $(Q)$(MAKE) -C $(srctree)/tools/build/feature/ clean >/dev/null
+
+clean: $(LIBBPF)-clean feature-detect-clean
+ $(call QUIET_CLEAN, bpftool)
+ $(Q)$(RM) -- $(OUTPUT)bpftool $(OUTPUT)*.o $(OUTPUT)*.d
+ $(Q)$(RM) -- $(BPFTOOL_BOOTSTRAP) $(OUTPUT)*.skel.h $(OUTPUT)vmlinux.h
+ $(Q)$(RM) -r -- $(OUTPUT)libbpf/
+ $(call QUIET_CLEAN, core-gen)
+ $(Q)$(RM) -- $(OUTPUT)FEATURE-DUMP.bpftool
+ $(Q)$(RM) -r -- $(OUTPUT)feature/
+
+install: $(OUTPUT)bpftool
+ $(call QUIET_INSTALL, bpftool)
+ $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(prefix)/sbin
+ $(Q)$(INSTALL) $(OUTPUT)bpftool $(DESTDIR)$(prefix)/sbin/bpftool
+ $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(bash_compdir)
+ $(Q)$(INSTALL) -m 0644 bash-completion/bpftool $(DESTDIR)$(bash_compdir)
+
+uninstall:
+ $(call QUIET_UNINST, bpftool)
+ $(Q)$(RM) -- $(DESTDIR)$(prefix)/sbin/bpftool
+ $(Q)$(RM) -- $(DESTDIR)$(bash_compdir)/bpftool
+
+doc:
+ $(call descend,Documentation)
+
+doc-clean:
+ $(call descend,Documentation,clean)
+
+doc-install:
+ $(call descend,Documentation,install)
+
+doc-uninstall:
+ $(call descend,Documentation,uninstall)
+
+FORCE:
+
+zdep:
+ @if [ "$(feature-zlib)" != "1" ]; then echo "No zlib found"; exit 1 ; fi
+
+.SECONDARY:
+.PHONY: all FORCE clean install uninstall zdep
+.PHONY: doc doc-clean doc-install doc-uninstall
+.DEFAULT_GOAL := all