| # SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) |
| |
| ifeq ($(V),1) |
| Q = |
| msg = |
| else |
| Q = @ |
| msg = @printf ' %-8s %s%s\n' "$(1)" "$(2)" "$(if $(3), $(3))"; |
| endif |
| |
| LIBBPF_VERSION := $(shell \ |
| grep -oE '^LIBBPF_([0-9.]+)' libbpf.map | \ |
| sort -rV | head -n1 | cut -d'_' -f2) |
| LIBBPF_MAJOR_VERSION := $(firstword $(subst ., ,$(LIBBPF_VERSION))) |
| |
| TOPDIR = .. |
| |
| INCLUDES := -I. -I$(TOPDIR)/include -I$(TOPDIR)/include/uapi |
| ALL_CFLAGS := $(INCLUDES) |
| |
| SHARED_CFLAGS += -fPIC -fvisibility=hidden -DSHARED |
| |
| CFLAGS ?= -g -O2 -Werror -Wall -std=gnu89 |
| ALL_CFLAGS += $(CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 |
| ALL_LDFLAGS += $(LDFLAGS) |
| ifdef NO_PKG_CONFIG |
| ALL_LDFLAGS += -lelf -lz |
| else |
| PKG_CONFIG ?= pkg-config |
| ALL_CFLAGS += $(shell $(PKG_CONFIG) --cflags libelf zlib) |
| ALL_LDFLAGS += $(shell $(PKG_CONFIG) --libs libelf zlib) |
| endif |
| |
| OBJDIR ?= . |
| SHARED_OBJDIR := $(OBJDIR)/sharedobjs |
| STATIC_OBJDIR := $(OBJDIR)/staticobjs |
| OBJS := bpf.o btf.o libbpf.o libbpf_errno.o netlink.o \ |
| nlattr.o str_error.o libbpf_probes.o bpf_prog_linfo.o xsk.o \ |
| btf_dump.o hashmap.o ringbuf.o strset.o linker.o gen_loader.o \ |
| relo_core.o |
| SHARED_OBJS := $(addprefix $(SHARED_OBJDIR)/,$(OBJS)) |
| STATIC_OBJS := $(addprefix $(STATIC_OBJDIR)/,$(OBJS)) |
| |
| STATIC_LIBS := $(OBJDIR)/libbpf.a |
| ifndef BUILD_STATIC_ONLY |
| SHARED_LIBS := $(OBJDIR)/libbpf.so \ |
| $(OBJDIR)/libbpf.so.$(LIBBPF_MAJOR_VERSION) \ |
| $(OBJDIR)/libbpf.so.$(LIBBPF_VERSION) |
| VERSION_SCRIPT := libbpf.map |
| endif |
| |
| HEADERS := bpf.h libbpf.h btf.h libbpf_common.h libbpf_legacy.h xsk.h \ |
| bpf_helpers.h bpf_helper_defs.h bpf_tracing.h \ |
| bpf_endian.h bpf_core_read.h skel_internal.h libbpf_version.h |
| UAPI_HEADERS := $(addprefix $(TOPDIR)/include/uapi/linux/,\ |
| bpf.h bpf_common.h btf.h) |
| |
| PC_FILE := $(OBJDIR)/libbpf.pc |
| |
| INSTALL = install |
| |
| DESTDIR ?= |
| |
| ifeq ($(filter-out %64 %64be %64eb %64le %64el s390x, $(shell uname -m)),) |
| LIBSUBDIR := lib64 |
| else |
| LIBSUBDIR := lib |
| endif |
| |
| # By default let the pc file itself use ${prefix} in includedir/libdir so that |
| # the prefix can be overridden at runtime (eg: --define-prefix) |
| ifndef LIBDIR |
| LIBDIR_PC := $$\{prefix\}/$(LIBSUBDIR) |
| else |
| LIBDIR_PC := $(LIBDIR) |
| endif |
| PREFIX ?= /usr |
| LIBDIR ?= $(PREFIX)/$(LIBSUBDIR) |
| INCLUDEDIR ?= $(PREFIX)/include |
| UAPIDIR ?= $(PREFIX)/include |
| |
| TAGS_PROG := $(if $(shell which etags 2>/dev/null),etags,ctags) |
| |
| all: $(STATIC_LIBS) $(SHARED_LIBS) $(PC_FILE) |
| |
| $(OBJDIR)/libbpf.a: $(STATIC_OBJS) |
| $(call msg,AR,$@) |
| $(Q)$(AR) rcs $@ $^ |
| |
| $(OBJDIR)/libbpf.so: $(OBJDIR)/libbpf.so.$(LIBBPF_MAJOR_VERSION) |
| $(Q)ln -sf $(^F) $@ |
| |
| $(OBJDIR)/libbpf.so.$(LIBBPF_MAJOR_VERSION): $(OBJDIR)/libbpf.so.$(LIBBPF_VERSION) |
| $(Q)ln -sf $(^F) $@ |
| |
| $(OBJDIR)/libbpf.so.$(LIBBPF_VERSION): $(SHARED_OBJS) |
| $(call msg,CC,$@) |
| $(Q)$(CC) -shared -Wl,--version-script=$(VERSION_SCRIPT) \ |
| -Wl,-soname,libbpf.so.$(LIBBPF_MAJOR_VERSION) \ |
| $^ $(ALL_LDFLAGS) -o $@ |
| |
| $(OBJDIR)/libbpf.pc: |
| $(Q)sed -e "s|@PREFIX@|$(PREFIX)|" \ |
| -e "s|@LIBDIR@|$(LIBDIR_PC)|" \ |
| -e "s|@VERSION@|$(LIBBPF_VERSION)|" \ |
| < libbpf.pc.template > $@ |
| |
| $(STATIC_OBJDIR) $(SHARED_OBJDIR): |
| $(call msg,MKDIR,$@) |
| $(Q)mkdir -p $@ |
| |
| $(STATIC_OBJDIR)/%.o: %.c | $(STATIC_OBJDIR) |
| $(call msg,CC,$@) |
| $(Q)$(CC) $(ALL_CFLAGS) $(CPPFLAGS) -c $< -o $@ |
| |
| $(SHARED_OBJDIR)/%.o: %.c | $(SHARED_OBJDIR) |
| $(call msg,CC,$@) |
| $(Q)$(CC) $(ALL_CFLAGS) $(SHARED_CFLAGS) $(CPPFLAGS) -c $< -o $@ |
| |
| define do_install |
| $(call msg,INSTALL,$1) |
| $(Q)if [ ! -d '$(DESTDIR)$2' ]; then \ |
| $(INSTALL) -d -m 755 '$(DESTDIR)$2'; \ |
| fi; |
| $(Q)$(INSTALL) $(if $3,-m $3,) $1 '$(DESTDIR)$2' |
| endef |
| |
| # Preserve symlinks at installation. |
| define do_s_install |
| $(call msg,INSTALL,$1) |
| $(Q)if [ ! -d '$(DESTDIR)$2' ]; then \ |
| $(INSTALL) -d -m 755 '$(DESTDIR)$2'; \ |
| fi; |
| $(Q)cp -fR $1 '$(DESTDIR)$2' |
| endef |
| |
| install: all install_headers install_pkgconfig |
| $(call do_s_install,$(STATIC_LIBS) $(SHARED_LIBS),$(LIBDIR)) |
| |
| install_headers: |
| $(call do_install,$(HEADERS),$(INCLUDEDIR)/bpf,644) |
| |
| # UAPI headers can be installed by a different package so they're not installed |
| # in by install rule. |
| install_uapi_headers: |
| $(call do_install,$(UAPI_HEADERS),$(UAPIDIR)/linux,644) |
| |
| install_pkgconfig: $(PC_FILE) |
| $(call do_install,$(PC_FILE),$(LIBDIR)/pkgconfig,644) |
| |
| clean: |
| $(call msg,CLEAN) |
| $(Q)rm -rf *.o *.a *.so *.so.* *.pc $(SHARED_OBJDIR) $(STATIC_OBJDIR) |
| |
| .PHONY: cscope tags |
| cscope: |
| $(call msg,CSCOPE) |
| $(Q)ls *.c *.h > cscope.files |
| $(Q)cscope -b -q -f cscope.out |
| |
| tags: |
| $(call msg,CTAGS) |
| $(Q)rm -f TAGS tags |
| $(Q)ls *.c *.h | xargs $(TAGS_PROG) -a |