Makefile (57e04eeda515ee979fec3bc3d64c408feae18acc) Makefile (fb9a98e160f10555936e1c7041d4efda4954d1df)
1# SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
2# Most of this file is copied from tools/lib/traceevent/Makefile
3
4LIBBPF_VERSION := $(shell \
5 grep -oE '^LIBBPF_([0-9.]+)' libbpf.map | \
6 sort -rV | head -n1 | cut -d'_' -f2)
7LIBBPF_MAJOR_VERSION := $(firstword $(subst ., ,$(LIBBPF_VERSION)))
8

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51ifeq ("$(origin V)", "command line")
52 VERBOSE = $(V)
53endif
54ifndef VERBOSE
55 VERBOSE = 0
56endif
57
58FEATURE_USER = .libbpf
1# SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
2# Most of this file is copied from tools/lib/traceevent/Makefile
3
4LIBBPF_VERSION := $(shell \
5 grep -oE '^LIBBPF_([0-9.]+)' libbpf.map | \
6 sort -rV | head -n1 | cut -d'_' -f2)
7LIBBPF_MAJOR_VERSION := $(firstword $(subst ., ,$(LIBBPF_VERSION)))
8

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51ifeq ("$(origin V)", "command line")
52 VERBOSE = $(V)
53endif
54ifndef VERBOSE
55 VERBOSE = 0
56endif
57
58FEATURE_USER = .libbpf
59FEATURE_TESTS = libelf libelf-mmap bpf reallocarray
60FEATURE_DISPLAY = libelf bpf
59FEATURE_TESTS = libelf libelf-mmap zlib bpf reallocarray
60FEATURE_DISPLAY = libelf zlib bpf
61
62INCLUDES = -I. -I$(srctree)/tools/include -I$(srctree)/tools/arch/$(ARCH)/include/uapi -I$(srctree)/tools/include/uapi
63FEATURE_CHECK_CFLAGS-bpf = $(INCLUDES)
64
65check_feat := 1
66NON_CHECK_FEAT_TARGETS := clean TAGS tags cscope help
67ifdef MAKECMDGOALS
68ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),)

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142LIB_TARGET := $(addprefix $(OUTPUT),$(LIB_TARGET))
143LIB_FILE := $(addprefix $(OUTPUT),$(LIB_FILE))
144PC_FILE := $(addprefix $(OUTPUT),$(PC_FILE))
145
146TAGS_PROG := $(if $(shell which etags 2>/dev/null),etags,ctags)
147
148GLOBAL_SYM_COUNT = $(shell readelf -s --wide $(BPF_IN_SHARED) | \
149 cut -d "@" -f1 | sed 's/_v[0-9]_[0-9]_[0-9].*//' | \
61
62INCLUDES = -I. -I$(srctree)/tools/include -I$(srctree)/tools/arch/$(ARCH)/include/uapi -I$(srctree)/tools/include/uapi
63FEATURE_CHECK_CFLAGS-bpf = $(INCLUDES)
64
65check_feat := 1
66NON_CHECK_FEAT_TARGETS := clean TAGS tags cscope help
67ifdef MAKECMDGOALS
68ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),)

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142LIB_TARGET := $(addprefix $(OUTPUT),$(LIB_TARGET))
143LIB_FILE := $(addprefix $(OUTPUT),$(LIB_FILE))
144PC_FILE := $(addprefix $(OUTPUT),$(PC_FILE))
145
146TAGS_PROG := $(if $(shell which etags 2>/dev/null),etags,ctags)
147
148GLOBAL_SYM_COUNT = $(shell readelf -s --wide $(BPF_IN_SHARED) | \
149 cut -d "@" -f1 | sed 's/_v[0-9]_[0-9]_[0-9].*//' | \
150 sed 's/\[.*\]//' | \
150 awk '/GLOBAL/ && /DEFAULT/ && !/UND/ {print $$NF}' | \
151 sort -u | wc -l)
152VERSIONED_SYM_COUNT = $(shell readelf -s --wide $(OUTPUT)libbpf.so | \
153 grep -Eo '[^ ]+@LIBBPF_' | cut -d@ -f1 | sort -u | wc -l)
154
155CMD_TARGETS = $(LIB_TARGET) $(PC_FILE)
156
157all: fixdep
158 $(Q)$(MAKE) all_cmd
159
160all_cmd: $(CMD_TARGETS) check
161
151 awk '/GLOBAL/ && /DEFAULT/ && !/UND/ {print $$NF}' | \
152 sort -u | wc -l)
153VERSIONED_SYM_COUNT = $(shell readelf -s --wide $(OUTPUT)libbpf.so | \
154 grep -Eo '[^ ]+@LIBBPF_' | cut -d@ -f1 | sort -u | wc -l)
155
156CMD_TARGETS = $(LIB_TARGET) $(PC_FILE)
157
158all: fixdep
159 $(Q)$(MAKE) all_cmd
160
161all_cmd: $(CMD_TARGETS) check
162
162$(BPF_IN_SHARED): force elfdep bpfdep bpf_helper_defs.h
163$(BPF_IN_SHARED): force elfdep zdep bpfdep bpf_helper_defs.h
163 @(test -f ../../include/uapi/linux/bpf.h -a -f ../../../include/uapi/linux/bpf.h && ( \
164 (diff -B ../../include/uapi/linux/bpf.h ../../../include/uapi/linux/bpf.h >/dev/null) || \
165 echo "Warning: Kernel ABI header at 'tools/include/uapi/linux/bpf.h' differs from latest version at 'include/uapi/linux/bpf.h'" >&2 )) || true
166 @(test -f ../../include/uapi/linux/bpf_common.h -a -f ../../../include/uapi/linux/bpf_common.h && ( \
167 (diff -B ../../include/uapi/linux/bpf_common.h ../../../include/uapi/linux/bpf_common.h >/dev/null) || \
168 echo "Warning: Kernel ABI header at 'tools/include/uapi/linux/bpf_common.h' differs from latest version at 'include/uapi/linux/bpf_common.h'" >&2 )) || true
169 @(test -f ../../include/uapi/linux/netlink.h -a -f ../../../include/uapi/linux/netlink.h && ( \
170 (diff -B ../../include/uapi/linux/netlink.h ../../../include/uapi/linux/netlink.h >/dev/null) || \
171 echo "Warning: Kernel ABI header at 'tools/include/uapi/linux/netlink.h' differs from latest version at 'include/uapi/linux/netlink.h'" >&2 )) || true
172 @(test -f ../../include/uapi/linux/if_link.h -a -f ../../../include/uapi/linux/if_link.h && ( \
173 (diff -B ../../include/uapi/linux/if_link.h ../../../include/uapi/linux/if_link.h >/dev/null) || \
174 echo "Warning: Kernel ABI header at 'tools/include/uapi/linux/if_link.h' differs from latest version at 'include/uapi/linux/if_link.h'" >&2 )) || true
175 @(test -f ../../include/uapi/linux/if_xdp.h -a -f ../../../include/uapi/linux/if_xdp.h && ( \
176 (diff -B ../../include/uapi/linux/if_xdp.h ../../../include/uapi/linux/if_xdp.h >/dev/null) || \
177 echo "Warning: Kernel ABI header at 'tools/include/uapi/linux/if_xdp.h' differs from latest version at 'include/uapi/linux/if_xdp.h'" >&2 )) || true
178 $(Q)$(MAKE) $(build)=libbpf OUTPUT=$(SHARED_OBJDIR) CFLAGS="$(CFLAGS) $(SHLIB_FLAGS)"
179
164 @(test -f ../../include/uapi/linux/bpf.h -a -f ../../../include/uapi/linux/bpf.h && ( \
165 (diff -B ../../include/uapi/linux/bpf.h ../../../include/uapi/linux/bpf.h >/dev/null) || \
166 echo "Warning: Kernel ABI header at 'tools/include/uapi/linux/bpf.h' differs from latest version at 'include/uapi/linux/bpf.h'" >&2 )) || true
167 @(test -f ../../include/uapi/linux/bpf_common.h -a -f ../../../include/uapi/linux/bpf_common.h && ( \
168 (diff -B ../../include/uapi/linux/bpf_common.h ../../../include/uapi/linux/bpf_common.h >/dev/null) || \
169 echo "Warning: Kernel ABI header at 'tools/include/uapi/linux/bpf_common.h' differs from latest version at 'include/uapi/linux/bpf_common.h'" >&2 )) || true
170 @(test -f ../../include/uapi/linux/netlink.h -a -f ../../../include/uapi/linux/netlink.h && ( \
171 (diff -B ../../include/uapi/linux/netlink.h ../../../include/uapi/linux/netlink.h >/dev/null) || \
172 echo "Warning: Kernel ABI header at 'tools/include/uapi/linux/netlink.h' differs from latest version at 'include/uapi/linux/netlink.h'" >&2 )) || true
173 @(test -f ../../include/uapi/linux/if_link.h -a -f ../../../include/uapi/linux/if_link.h && ( \
174 (diff -B ../../include/uapi/linux/if_link.h ../../../include/uapi/linux/if_link.h >/dev/null) || \
175 echo "Warning: Kernel ABI header at 'tools/include/uapi/linux/if_link.h' differs from latest version at 'include/uapi/linux/if_link.h'" >&2 )) || true
176 @(test -f ../../include/uapi/linux/if_xdp.h -a -f ../../../include/uapi/linux/if_xdp.h && ( \
177 (diff -B ../../include/uapi/linux/if_xdp.h ../../../include/uapi/linux/if_xdp.h >/dev/null) || \
178 echo "Warning: Kernel ABI header at 'tools/include/uapi/linux/if_xdp.h' differs from latest version at 'include/uapi/linux/if_xdp.h'" >&2 )) || true
179 $(Q)$(MAKE) $(build)=libbpf OUTPUT=$(SHARED_OBJDIR) CFLAGS="$(CFLAGS) $(SHLIB_FLAGS)"
180
180$(BPF_IN_STATIC): force elfdep bpfdep bpf_helper_defs.h
181$(BPF_IN_STATIC): force elfdep zdep bpfdep bpf_helper_defs.h
181 $(Q)$(MAKE) $(build)=libbpf OUTPUT=$(STATIC_OBJDIR)
182
183bpf_helper_defs.h: $(srctree)/tools/include/uapi/linux/bpf.h
184 $(Q)$(srctree)/scripts/bpf_helpers_doc.py --header \
185 --file $(srctree)/tools/include/uapi/linux/bpf.h > bpf_helper_defs.h
186
187$(OUTPUT)libbpf.so: $(OUTPUT)libbpf.so.$(LIBBPF_VERSION)
188
189$(OUTPUT)libbpf.so.$(LIBBPF_VERSION): $(BPF_IN_SHARED)
190 $(QUIET_LINK)$(CC) $(LDFLAGS) \
191 --shared -Wl,-soname,libbpf.so.$(LIBBPF_MAJOR_VERSION) \
182 $(Q)$(MAKE) $(build)=libbpf OUTPUT=$(STATIC_OBJDIR)
183
184bpf_helper_defs.h: $(srctree)/tools/include/uapi/linux/bpf.h
185 $(Q)$(srctree)/scripts/bpf_helpers_doc.py --header \
186 --file $(srctree)/tools/include/uapi/linux/bpf.h > bpf_helper_defs.h
187
188$(OUTPUT)libbpf.so: $(OUTPUT)libbpf.so.$(LIBBPF_VERSION)
189
190$(OUTPUT)libbpf.so.$(LIBBPF_VERSION): $(BPF_IN_SHARED)
191 $(QUIET_LINK)$(CC) $(LDFLAGS) \
192 --shared -Wl,-soname,libbpf.so.$(LIBBPF_MAJOR_VERSION) \
192 -Wl,--version-script=$(VERSION_SCRIPT) $^ -lelf -o $@
193 -Wl,--version-script=$(VERSION_SCRIPT) $^ -lelf -lz -o $@
193 @ln -sf $(@F) $(OUTPUT)libbpf.so
194 @ln -sf $(@F) $(OUTPUT)libbpf.so.$(LIBBPF_MAJOR_VERSION)
195
196$(OUTPUT)libbpf.a: $(BPF_IN_STATIC)
197 $(QUIET_LINK)$(RM) $@; $(AR) rcs $@ $^
198
199$(OUTPUT)libbpf.pc:
200 $(QUIET_GEN)sed -e "s|@PREFIX@|$(prefix)|" \

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208 @if [ "$(GLOBAL_SYM_COUNT)" != "$(VERSIONED_SYM_COUNT)" ]; then \
209 echo "Warning: Num of global symbols in $(BPF_IN_SHARED)" \
210 "($(GLOBAL_SYM_COUNT)) does NOT match with num of" \
211 "versioned symbols in $^ ($(VERSIONED_SYM_COUNT))." \
212 "Please make sure all LIBBPF_API symbols are" \
213 "versioned in $(VERSION_SCRIPT)." >&2; \
214 readelf -s --wide $(BPF_IN_SHARED) | \
215 cut -d "@" -f1 | sed 's/_v[0-9]_[0-9]_[0-9].*//' | \
194 @ln -sf $(@F) $(OUTPUT)libbpf.so
195 @ln -sf $(@F) $(OUTPUT)libbpf.so.$(LIBBPF_MAJOR_VERSION)
196
197$(OUTPUT)libbpf.a: $(BPF_IN_STATIC)
198 $(QUIET_LINK)$(RM) $@; $(AR) rcs $@ $^
199
200$(OUTPUT)libbpf.pc:
201 $(QUIET_GEN)sed -e "s|@PREFIX@|$(prefix)|" \

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209 @if [ "$(GLOBAL_SYM_COUNT)" != "$(VERSIONED_SYM_COUNT)" ]; then \
210 echo "Warning: Num of global symbols in $(BPF_IN_SHARED)" \
211 "($(GLOBAL_SYM_COUNT)) does NOT match with num of" \
212 "versioned symbols in $^ ($(VERSIONED_SYM_COUNT))." \
213 "Please make sure all LIBBPF_API symbols are" \
214 "versioned in $(VERSION_SCRIPT)." >&2; \
215 readelf -s --wide $(BPF_IN_SHARED) | \
216 cut -d "@" -f1 | sed 's/_v[0-9]_[0-9]_[0-9].*//' | \
217 sed 's/\[.*\]//' | \
216 awk '/GLOBAL/ && /DEFAULT/ && !/UND/ {print $$NF}'| \
217 sort -u > $(OUTPUT)libbpf_global_syms.tmp; \
218 readelf -s --wide $(OUTPUT)libbpf.so | \
219 grep -Eo '[^ ]+@LIBBPF_' | cut -d@ -f1 | \
220 sort -u > $(OUTPUT)libbpf_versioned_syms.tmp; \
221 diff -u $(OUTPUT)libbpf_global_syms.tmp \
222 $(OUTPUT)libbpf_versioned_syms.tmp; \
223 rm $(OUTPUT)libbpf_global_syms.tmp \

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244 cp -fpR $(LIB_FILE) $(DESTDIR)$(libdir_SQ)
245
246install_headers: bpf_helper_defs.h
247 $(call QUIET_INSTALL, headers) \
248 $(call do_install,bpf.h,$(prefix)/include/bpf,644); \
249 $(call do_install,libbpf.h,$(prefix)/include/bpf,644); \
250 $(call do_install,btf.h,$(prefix)/include/bpf,644); \
251 $(call do_install,libbpf_util.h,$(prefix)/include/bpf,644); \
218 awk '/GLOBAL/ && /DEFAULT/ && !/UND/ {print $$NF}'| \
219 sort -u > $(OUTPUT)libbpf_global_syms.tmp; \
220 readelf -s --wide $(OUTPUT)libbpf.so | \
221 grep -Eo '[^ ]+@LIBBPF_' | cut -d@ -f1 | \
222 sort -u > $(OUTPUT)libbpf_versioned_syms.tmp; \
223 diff -u $(OUTPUT)libbpf_global_syms.tmp \
224 $(OUTPUT)libbpf_versioned_syms.tmp; \
225 rm $(OUTPUT)libbpf_global_syms.tmp \

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246 cp -fpR $(LIB_FILE) $(DESTDIR)$(libdir_SQ)
247
248install_headers: bpf_helper_defs.h
249 $(call QUIET_INSTALL, headers) \
250 $(call do_install,bpf.h,$(prefix)/include/bpf,644); \
251 $(call do_install,libbpf.h,$(prefix)/include/bpf,644); \
252 $(call do_install,btf.h,$(prefix)/include/bpf,644); \
253 $(call do_install,libbpf_util.h,$(prefix)/include/bpf,644); \
254 $(call do_install,libbpf_common.h,$(prefix)/include/bpf,644); \
252 $(call do_install,xsk.h,$(prefix)/include/bpf,644); \
253 $(call do_install,bpf_helpers.h,$(prefix)/include/bpf,644); \
254 $(call do_install,bpf_helper_defs.h,$(prefix)/include/bpf,644); \
255 $(call do_install,bpf_tracing.h,$(prefix)/include/bpf,644); \
256 $(call do_install,bpf_endian.h,$(prefix)/include/bpf,644); \
257 $(call do_install,bpf_core_read.h,$(prefix)/include/bpf,644);
258
259install_pkgconfig: $(PC_FILE)

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272 $(call QUIET_CLEAN, libbpf) $(RM) -rf $(CMD_TARGETS) \
273 *.o *~ *.a *.so *.so.$(LIBBPF_MAJOR_VERSION) .*.d .*.cmd \
274 *.pc LIBBPF-CFLAGS bpf_helper_defs.h \
275 $(SHARED_OBJDIR) $(STATIC_OBJDIR)
276 $(call QUIET_CLEAN, core-gen) $(RM) $(OUTPUT)FEATURE-DUMP.libbpf
277
278
279
255 $(call do_install,xsk.h,$(prefix)/include/bpf,644); \
256 $(call do_install,bpf_helpers.h,$(prefix)/include/bpf,644); \
257 $(call do_install,bpf_helper_defs.h,$(prefix)/include/bpf,644); \
258 $(call do_install,bpf_tracing.h,$(prefix)/include/bpf,644); \
259 $(call do_install,bpf_endian.h,$(prefix)/include/bpf,644); \
260 $(call do_install,bpf_core_read.h,$(prefix)/include/bpf,644);
261
262install_pkgconfig: $(PC_FILE)

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275 $(call QUIET_CLEAN, libbpf) $(RM) -rf $(CMD_TARGETS) \
276 *.o *~ *.a *.so *.so.$(LIBBPF_MAJOR_VERSION) .*.d .*.cmd \
277 *.pc LIBBPF-CFLAGS bpf_helper_defs.h \
278 $(SHARED_OBJDIR) $(STATIC_OBJDIR)
279 $(call QUIET_CLEAN, core-gen) $(RM) $(OUTPUT)FEATURE-DUMP.libbpf
280
281
282
280PHONY += force elfdep bpfdep cscope tags
283PHONY += force elfdep zdep bpfdep cscope tags
281force:
282
283elfdep:
284 @if [ "$(feature-libelf)" != "1" ]; then echo "No libelf found"; exit 1 ; fi
285
284force:
285
286elfdep:
287 @if [ "$(feature-libelf)" != "1" ]; then echo "No libelf found"; exit 1 ; fi
288
289zdep:
290 @if [ "$(feature-zlib)" != "1" ]; then echo "No zlib found"; exit 1 ; fi
291
286bpfdep:
287 @if [ "$(feature-bpf)" != "1" ]; then echo "BPF API too old"; exit 1 ; fi
288
289cscope:
290 ls *.c *.h > cscope.files
291 cscope -b -q -I $(srctree)/include -f cscope.out
292
293tags:
294 rm -f TAGS tags
295 ls *.c *.h | xargs $(TAGS_PROG) -a
296
297# Declare the contents of the .PHONY variable as phony. We keep that
298# information in a variable so we can use it in if_changed and friends.
299.PHONY: $(PHONY)
300
301# Delete partially updated (corrupted) files on error
302.DELETE_ON_ERROR:
292bpfdep:
293 @if [ "$(feature-bpf)" != "1" ]; then echo "BPF API too old"; exit 1 ; fi
294
295cscope:
296 ls *.c *.h > cscope.files
297 cscope -b -q -I $(srctree)/include -f cscope.out
298
299tags:
300 rm -f TAGS tags
301 ls *.c *.h | xargs $(TAGS_PROG) -a
302
303# Declare the contents of the .PHONY variable as phony. We keep that
304# information in a variable so we can use it in if_changed and friends.
305.PHONY: $(PHONY)
306
307# Delete partially updated (corrupted) files on error
308.DELETE_ON_ERROR: