| # SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) |
| # from https://github.com/libbpf/libbpf-bootstrap/ |
| OUTPUT := .output |
| CLANG ?= clang |
| LLVM_STRIP ?= llvm-strip |
| BPFTOOL ?= $(abspath ../tools/bpftool) |
| LIBBPF_SRC := $(abspath ../libbpf/src) |
| LIBBPF_OBJ := $(abspath $(OUTPUT)/libbpf.a) |
| ARCH := $(shell uname -m | sed 's/x86_64/x86/' | sed 's/aarch64/arm64/' | sed 's/ppc64le/powerpc/' | sed 's/mips.*/mips/') |
| VMLINUX := ../vmlinux/$(ARCH)/vmlinux.h |
| HELPERS := $(abspath ../helpers) |
| # Use our own libbpf API headers and Linux UAPI headers distributed with |
| # libbpf to avoid dependency on system-wide headers, which could be missing or |
| # outdated |
| INCLUDES := -I$(OUTPUT) -I../libbpf/include/uapi -I$(dir $(VMLINUX)) -I$(HELPERS) |
| CFLAGS := -g -Wall -fsanitize=address |
| |
| APPS = profile |
| |
| # Get Clang's default includes on this system. We'll explicitly add these dirs |
| # to the includes list when compiling with `-target bpf` because otherwise some |
| # architecture-specific dirs will be "missing" on some architectures/distros - |
| # headers such as asm/types.h, asm/byteorder.h, asm/socket.h, asm/sockios.h, |
| # sys/cdefs.h etc. might be missing. |
| # |
| # Use '-idirafter': Don't interfere with include mechanics except where the |
| # build would have failed anyways. |
| CLANG_BPF_SYS_INCLUDES = $(shell $(CLANG) -v -E - </dev/null 2>&1 \ |
| | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') |
| |
| ifeq ($(V),1) |
| Q = |
| msg = |
| else |
| Q = @ |
| msg = @printf ' %-8s %s%s\n' \ |
| "$(1)" \ |
| "$(patsubst $(abspath $(OUTPUT))/%,%,$(2))" \ |
| "$(if $(3), $(3))"; |
| MAKEFLAGS += --no-print-directory |
| endif |
| |
| .PHONY: all |
| all: $(APPS) |
| |
| .PHONY: clean |
| clean: |
| $(call msg,CLEAN) |
| $(Q)rm -rf $(OUTPUT) $(APPS) *.o |
| |
| $(OUTPUT) $(OUTPUT)/libbpf: |
| $(call msg,MKDIR,$@) |
| $(Q)mkdir -p $@ |
| |
| # Build libbpf |
| $(LIBBPF_OBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(OUTPUT)/libbpf |
| $(call msg,LIB,$@) |
| $(Q)$(MAKE) -C $(LIBBPF_SRC) BUILD_STATIC_ONLY=1 \ |
| OBJDIR=$(dir $@)/libbpf DESTDIR=$(dir $@) \ |
| INCLUDEDIR= LIBDIR= UAPIDIR= \ |
| install |
| |
| # Build BPF code |
| $(OUTPUT)/%.bpf.o: %.bpf.c $(LIBBPF_OBJ) $(wildcard %.h) $(VMLINUX) | $(OUTPUT) |
| $(call msg,BPF,$@) |
| $(Q)$(CLANG) -g -O2 -target bpf -D__TARGET_ARCH_$(ARCH) $(INCLUDES) $(CLANG_BPF_SYS_INCLUDES) -c $(filter %.c,$^) -o $@ |
| $(Q)$(LLVM_STRIP) -g $@ # strip useless DWARF info |
| |
| # Generate BPF skeletons |
| $(OUTPUT)/%.skel.h: $(OUTPUT)/%.bpf.o | $(OUTPUT) |
| $(call msg,GEN-SKEL,$@) |
| $(Q)$(BPFTOOL) gen skeleton $< > $@ |
| |
| # Build user-space code |
| $(patsubst %,$(OUTPUT)/%.o,$(APPS)): %.o: %.skel.h |
| |
| $(OUTPUT)/%.o: %.c $(wildcard %.h) | $(OUTPUT) |
| $(call msg,CC,$@) |
| $(Q)$(CC) $(CFLAGS) $(INCLUDES) -c $(filter %.c,$^) -o $@ |
| |
| trace_helpers.o: $(HELPERS)/trace_helpers.c |
| $(Q)$(CC) $(CFLAGS) $(INCLUDES) -c $(filter %.c,$^) -o $@ |
| |
| uprobe_helpers.o: $(HELPERS)/uprobe_helpers.c |
| $(Q)$(CC) $(CFLAGS) $(INCLUDES) -c $(filter %.c,$^) -o $@ |
| |
| lua_stacks_helper.o: lua_stacks_helper.cpp profile.h lua_stacks_helper.h |
| $(CC) $(CFLAGS) $(INCLUDES) -c $(filter %.cpp,$^) -o $@ |
| |
| # Build application binary |
| $(APPS): %: $(OUTPUT)/%.o uprobe_helpers.o trace_helpers.o lua_stacks_helper.o $(LIBBPF_OBJ) | $(OUTPUT) |
| $(call msg,BINARY,$@) |
| $(Q)$(CXX) $(CFLAGS) $^ -lelf -lz -o $@ |
| |
| # delete failed targets |
| .DELETE_ON_ERROR: |
| |
| # keep intermediate (.skel.h, .bpf.o, etc) targets |
| .SECONDARY: |