diff options
Diffstat (limited to 'src/Makefile')
| -rw-r--r-- | src/Makefile | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/src/Makefile b/src/Makefile new file mode 100644 index 0000000..d535f81 --- /dev/null +++ b/src/Makefile @@ -0,0 +1,183 @@ +# 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_MAJOR_VERSION := 1 +LIBBPF_MINOR_VERSION := 1 +LIBBPF_PATCH_VERSION := 0 +LIBBPF_VERSION := $(LIBBPF_MAJOR_VERSION).$(LIBBPF_MINOR_VERSION).$(LIBBPF_PATCH_VERSION) +LIBBPF_MAJMIN_VERSION := $(LIBBPF_MAJOR_VERSION).$(LIBBPF_MINOR_VERSION).0 +LIBBPF_MAP_VERSION := $(shell grep -oE '^LIBBPF_([0-9.]+)' libbpf.map | sort -rV | head -n1 | cut -d'_' -f2) +ifneq ($(LIBBPF_MAJMIN_VERSION), $(LIBBPF_MAP_VERSION)) +$(error Libbpf release ($(LIBBPF_VERSION)) and map ($(LIBBPF_MAP_VERSION)) versions are out of sync!) +endif + +define allow-override + $(if $(or $(findstring environment,$(origin $(1))),\ + $(findstring command line,$(origin $(1)))),,\ + $(eval $(1) = $(2))) +endef + +$(call allow-override,CC,$(CROSS_COMPILE)cc) +$(call allow-override,LD,$(CROSS_COMPILE)ld) + +TOPDIR = .. + +INCLUDES := -I. -I$(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 $(EXTRA_CFLAGS) +ALL_LDFLAGS += $(LDFLAGS) $(EXTRA_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 \ + btf_dump.o hashmap.o ringbuf.o strset.o linker.o gen_loader.o \ + relo_core.o usdt.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 \ + bpf_helpers.h bpf_helper_defs.h bpf_tracing.h \ + bpf_endian.h bpf_core_read.h skel_internal.h libbpf_version.h \ + usdt.bpf.h +UAPI_HEADERS := $(addprefix $(TOPDIR)/include/uapi/linux/,\ + bpf.h bpf_common.h btf.h) + +PC_FILE := $(OBJDIR)/libbpf.pc + +INSTALL = install + +DESTDIR ?= + +HOSTARCH = $(firstword $(subst -, ,$(shell $(CC) -dumpmachine))) +ifeq ($(filter-out %64 %64be %64eb %64le %64el s390x, $(HOSTARCH)),) + 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: force + $(Q)sed -e "s|@PREFIX@|$(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 force +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 + +force: |