1 # SPDX-License-Identifier: (LGPL-2.1 OR BSD-2- 1 # SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
2 # Most of this file is copied from tools/lib/t 2 # Most of this file is copied from tools/lib/traceevent/Makefile
3 3
4 RM ?= rm <<
5 srctree := $(realpath $(srctree)) <<
6 <<
7 VERSION_SCRIPT := libbpf.map <<
8 LIBBPF_VERSION := $(shell \ 4 LIBBPF_VERSION := $(shell \
9 grep -oE '^LIBBPF_([0-9.]+)' $(VERSION !! 5 grep -oE '^LIBBPF_([0-9.]+)' libbpf.map | \
10 sort -rV | head -n1 | cut -d'_' -f2) 6 sort -rV | head -n1 | cut -d'_' -f2)
11 LIBBPF_MAJOR_VERSION := $(word 1,$(subst ., ,$ !! 7 LIBBPF_MAJOR_VERSION := $(firstword $(subst ., ,$(LIBBPF_VERSION)))
12 LIBBPF_MINOR_VERSION := $(word 2,$(subst ., ,$ <<
13 8
14 MAKEFLAGS += --no-print-directory 9 MAKEFLAGS += --no-print-directory
15 10
16 # This will work when bpf is built in tools en 11 # This will work when bpf is built in tools env. where srctree
17 # isn't set and when invoked from selftests bu 12 # isn't set and when invoked from selftests build, where srctree
18 # is a ".". building_out_of_srctree is undefin 13 # is a ".". building_out_of_srctree is undefined for in srctree
19 # builds 14 # builds
20 ifndef building_out_of_srctree 15 ifndef building_out_of_srctree
21 srctree := $(patsubst %/,%,$(dir $(CURDIR))) 16 srctree := $(patsubst %/,%,$(dir $(CURDIR)))
22 srctree := $(patsubst %/,%,$(dir $(srctree))) 17 srctree := $(patsubst %/,%,$(dir $(srctree)))
23 srctree := $(patsubst %/,%,$(dir $(srctree))) 18 srctree := $(patsubst %/,%,$(dir $(srctree)))
24 #$(info Determined 'srctree' to be $(srctree)) 19 #$(info Determined 'srctree' to be $(srctree))
25 endif 20 endif
26 21
27 INSTALL = install 22 INSTALL = install
28 23
29 # Use DESTDIR for installing into a different 24 # Use DESTDIR for installing into a different root directory.
30 # This is useful for building a package. The p 25 # This is useful for building a package. The program will be
31 # installed in this directory as if it was the 26 # installed in this directory as if it was the root directory.
32 # Then the build tool can move it later. 27 # Then the build tool can move it later.
33 DESTDIR ?= 28 DESTDIR ?=
34 DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))' 29 DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))'
35 30
36 include $(srctree)/tools/scripts/Makefile.arch 31 include $(srctree)/tools/scripts/Makefile.arch
37 32
38 ifeq ($(LP64), 1) 33 ifeq ($(LP64), 1)
39 libdir_relative = lib64 34 libdir_relative = lib64
40 else 35 else
41 libdir_relative = lib 36 libdir_relative = lib
42 endif 37 endif
43 38
44 prefix ?= /usr/local 39 prefix ?= /usr/local
45 libdir = $(prefix)/$(libdir_relative) 40 libdir = $(prefix)/$(libdir_relative)
46 man_dir = $(prefix)/share/man 41 man_dir = $(prefix)/share/man
47 man_dir_SQ = '$(subst ','\'',$(man_dir))' 42 man_dir_SQ = '$(subst ','\'',$(man_dir))'
48 43
49 export man_dir man_dir_SQ INSTALL 44 export man_dir man_dir_SQ INSTALL
50 export DESTDIR DESTDIR_SQ 45 export DESTDIR DESTDIR_SQ
51 46
52 include $(srctree)/tools/scripts/Makefile.incl 47 include $(srctree)/tools/scripts/Makefile.include
53 48
54 # copy a bit from Linux kbuild 49 # copy a bit from Linux kbuild
55 50
56 ifeq ("$(origin V)", "command line") 51 ifeq ("$(origin V)", "command line")
57 VERBOSE = $(V) 52 VERBOSE = $(V)
58 endif 53 endif
59 ifndef VERBOSE 54 ifndef VERBOSE
60 VERBOSE = 0 55 VERBOSE = 0
61 endif 56 endif
62 57
63 INCLUDES = -I$(or $(OUTPUT),.) \ !! 58 FEATURE_USER = .libbpf
64 -I$(srctree)/tools/include -I$(srct !! 59 FEATURE_TESTS = libelf libelf-mmap bpf reallocarray cxx
>> 60 FEATURE_DISPLAY = libelf bpf
>> 61
>> 62 INCLUDES = -I. -I$(srctree)/tools/include -I$(srctree)/tools/include/uapi
>> 63 FEATURE_CHECK_CFLAGS-bpf = $(INCLUDES)
>> 64
>> 65 check_feat := 1
>> 66 NON_CHECK_FEAT_TARGETS := clean TAGS tags cscope help
>> 67 ifdef MAKECMDGOALS
>> 68 ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),)
>> 69 check_feat := 0
>> 70 endif
>> 71 endif
>> 72
>> 73 ifeq ($(check_feat),1)
>> 74 ifeq ($(FEATURES_DUMP),)
>> 75 include $(srctree)/tools/build/Makefile.feature
>> 76 else
>> 77 include $(FEATURES_DUMP)
>> 78 endif
>> 79 endif
65 80
66 export prefix libdir src obj 81 export prefix libdir src obj
67 82
68 # Shell quotes 83 # Shell quotes
69 libdir_SQ = $(subst ','\'',$(libdir)) 84 libdir_SQ = $(subst ','\'',$(libdir))
70 libdir_relative_SQ = $(subst ','\'',$(libdir_r 85 libdir_relative_SQ = $(subst ','\'',$(libdir_relative))
71 86
72 OBJ = $@ 87 OBJ = $@
73 N = 88 N =
74 89
75 LIB_TARGET = libbpf.a libbpf.so.$(LIBBPF_ 90 LIB_TARGET = libbpf.a libbpf.so.$(LIBBPF_VERSION)
76 LIB_FILE = libbpf.a libbpf.so* 91 LIB_FILE = libbpf.a libbpf.so*
77 PC_FILE = libbpf.pc 92 PC_FILE = libbpf.pc
78 93
79 # Set compile option CFLAGS 94 # Set compile option CFLAGS
80 ifdef EXTRA_CFLAGS 95 ifdef EXTRA_CFLAGS
81 CFLAGS := $(EXTRA_CFLAGS) 96 CFLAGS := $(EXTRA_CFLAGS)
82 else 97 else
83 CFLAGS := -g -O2 !! 98 CFLAGS := -g -Wall
>> 99 endif
>> 100
>> 101 ifeq ($(feature-libelf-mmap), 1)
>> 102 override CFLAGS += -DHAVE_LIBELF_MMAP_SUPPORT
>> 103 endif
>> 104
>> 105 ifeq ($(feature-reallocarray), 0)
>> 106 override CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
84 endif 107 endif
85 108
86 # Append required CFLAGS 109 # Append required CFLAGS
87 override CFLAGS += -std=gnu89 !! 110 override CFLAGS += $(EXTRA_WARNINGS)
88 override CFLAGS += $(EXTRA_WARNINGS) -Wno-swit <<
89 override CFLAGS += -Werror -Wall 111 override CFLAGS += -Werror -Wall
>> 112 override CFLAGS += -fPIC
90 override CFLAGS += $(INCLUDES) 113 override CFLAGS += $(INCLUDES)
91 override CFLAGS += -fvisibility=hidden 114 override CFLAGS += -fvisibility=hidden
92 override CFLAGS += -D_LARGEFILE64_SOURCE -D_FI 115 override CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
93 override CFLAGS += $(CLANG_CROSS_FLAGS) <<
94 116
95 # flags specific for shared library 117 # flags specific for shared library
96 SHLIB_FLAGS := -DSHARED -fPIC !! 118 SHLIB_FLAGS := -DSHARED
97 119
98 ifeq ($(VERBOSE),1) 120 ifeq ($(VERBOSE),1)
99 Q = 121 Q =
100 else 122 else
101 Q = @ 123 Q = @
102 endif 124 endif
103 125
104 # Disable command line variables (CFLAGS) over 126 # Disable command line variables (CFLAGS) override from top
105 # level Makefile (perf), otherwise build Makef 127 # level Makefile (perf), otherwise build Makefile will get
106 # the same command line setup. 128 # the same command line setup.
107 MAKEOVERRIDES= 129 MAKEOVERRIDES=
108 130
109 all: 131 all:
110 132
111 OUTPUT ?= ./ <<
112 OUTPUT := $(abspath $(OUTPUT))/ <<
113 export srctree OUTPUT CC LD CFLAGS V 133 export srctree OUTPUT CC LD CFLAGS V
114 include $(srctree)/tools/build/Makefile.includ 134 include $(srctree)/tools/build/Makefile.include
115 135
116 SHARED_OBJDIR := $(OUTPUT)sharedobjs/ 136 SHARED_OBJDIR := $(OUTPUT)sharedobjs/
117 STATIC_OBJDIR := $(OUTPUT)staticobjs/ 137 STATIC_OBJDIR := $(OUTPUT)staticobjs/
118 BPF_IN_SHARED := $(SHARED_OBJDIR)libbpf-in.o 138 BPF_IN_SHARED := $(SHARED_OBJDIR)libbpf-in.o
119 BPF_IN_STATIC := $(STATIC_OBJDIR)libbpf-in.o 139 BPF_IN_STATIC := $(STATIC_OBJDIR)libbpf-in.o
120 BPF_HELPER_DEFS := $(OUTPUT)bpf_helper_defs.h !! 140 VERSION_SCRIPT := libbpf.map
121 BPF_GENERATED := $(BPF_HELPER_DEFS) <<
122 141
123 LIB_TARGET := $(addprefix $(OUTPUT),$(LIB 142 LIB_TARGET := $(addprefix $(OUTPUT),$(LIB_TARGET))
124 LIB_FILE := $(addprefix $(OUTPUT),$(LIB 143 LIB_FILE := $(addprefix $(OUTPUT),$(LIB_FILE))
125 PC_FILE := $(addprefix $(OUTPUT),$(PC_ 144 PC_FILE := $(addprefix $(OUTPUT),$(PC_FILE))
126 145
127 TAGS_PROG := $(if $(shell which etags 2>/dev/n <<
128 <<
129 GLOBAL_SYM_COUNT = $(shell readelf -s --wide $ 146 GLOBAL_SYM_COUNT = $(shell readelf -s --wide $(BPF_IN_SHARED) | \
130 cut -d "@" -f1 | se 147 cut -d "@" -f1 | sed 's/_v[0-9]_[0-9]_[0-9].*//' | \
131 sed 's/\[.*\]//' | 148 sed 's/\[.*\]//' | \
132 awk '/GLOBAL/ && /D !! 149 awk '/GLOBAL/ && /DEFAULT/ && !/UND/ {print $$NF}' | \
133 sort -u | wc -l) 150 sort -u | wc -l)
134 VERSIONED_SYM_COUNT = $(shell readelf --dyn-sy !! 151 VERSIONED_SYM_COUNT = $(shell readelf -s --wide $(OUTPUT)libbpf.so | \
135 sed 's/\[.*\]//' <<
136 awk '/GLOBAL/ && <<
137 grep -Eo '[^ ]+@ 152 grep -Eo '[^ ]+@LIBBPF_' | cut -d@ -f1 | sort -u | wc -l)
138 153
139 CMD_TARGETS = $(LIB_TARGET) $(PC_FILE) 154 CMD_TARGETS = $(LIB_TARGET) $(PC_FILE)
140 155
>> 156 CXX_TEST_TARGET = $(OUTPUT)test_libbpf
>> 157
>> 158 ifeq ($(feature-cxx), 1)
>> 159 CMD_TARGETS += $(CXX_TEST_TARGET)
>> 160 endif
>> 161
>> 162 TARGETS = $(CMD_TARGETS)
>> 163
141 all: fixdep 164 all: fixdep
142 $(Q)$(MAKE) all_cmd 165 $(Q)$(MAKE) all_cmd
143 166
144 all_cmd: $(CMD_TARGETS) check 167 all_cmd: $(CMD_TARGETS) check
145 168
146 $(SHARED_OBJDIR) $(STATIC_OBJDIR): !! 169 $(BPF_IN_SHARED): force elfdep bpfdep
147 $(Q)mkdir -p $@ <<
148 <<
149 $(BPF_IN_SHARED): force $(BPF_GENERATED) | $(S <<
150 @(test -f ../../include/uapi/linux/bpf 170 @(test -f ../../include/uapi/linux/bpf.h -a -f ../../../include/uapi/linux/bpf.h && ( \
151 (diff -B ../../include/uapi/linux/bpf. 171 (diff -B ../../include/uapi/linux/bpf.h ../../../include/uapi/linux/bpf.h >/dev/null) || \
152 echo "Warning: Kernel ABI header at 't 172 echo "Warning: Kernel ABI header at 'tools/include/uapi/linux/bpf.h' differs from latest version at 'include/uapi/linux/bpf.h'" >&2 )) || true
153 @(test -f ../../include/uapi/linux/bpf 173 @(test -f ../../include/uapi/linux/bpf_common.h -a -f ../../../include/uapi/linux/bpf_common.h && ( \
154 (diff -B ../../include/uapi/linux/bpf_ 174 (diff -B ../../include/uapi/linux/bpf_common.h ../../../include/uapi/linux/bpf_common.h >/dev/null) || \
155 echo "Warning: Kernel ABI header at 't 175 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
>> 176 @(test -f ../../include/uapi/linux/netlink.h -a -f ../../../include/uapi/linux/netlink.h && ( \
>> 177 (diff -B ../../include/uapi/linux/netlink.h ../../../include/uapi/linux/netlink.h >/dev/null) || \
>> 178 echo "Warning: Kernel ABI header at 'tools/include/uapi/linux/netlink.h' differs from latest version at 'include/uapi/linux/netlink.h'" >&2 )) || true
>> 179 @(test -f ../../include/uapi/linux/if_link.h -a -f ../../../include/uapi/linux/if_link.h && ( \
>> 180 (diff -B ../../include/uapi/linux/if_link.h ../../../include/uapi/linux/if_link.h >/dev/null) || \
>> 181 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
156 @(test -f ../../include/uapi/linux/if_ 182 @(test -f ../../include/uapi/linux/if_xdp.h -a -f ../../../include/uapi/linux/if_xdp.h && ( \
157 (diff -B ../../include/uapi/linux/if_x 183 (diff -B ../../include/uapi/linux/if_xdp.h ../../../include/uapi/linux/if_xdp.h >/dev/null) || \
158 echo "Warning: Kernel ABI header at 't 184 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
159 $(SILENT_MAKE) -C $(srctree)/tools/bui <<
160 $(Q)$(MAKE) $(build)=libbpf OUTPUT=$(S 185 $(Q)$(MAKE) $(build)=libbpf OUTPUT=$(SHARED_OBJDIR) CFLAGS="$(CFLAGS) $(SHLIB_FLAGS)"
161 186
162 $(BPF_IN_STATIC): force $(BPF_GENERATED) | $(S !! 187 $(BPF_IN_STATIC): force elfdep bpfdep
163 $(SILENT_MAKE) -C $(srctree)/tools/bui <<
164 $(Q)$(MAKE) $(build)=libbpf OUTPUT=$(S 188 $(Q)$(MAKE) $(build)=libbpf OUTPUT=$(STATIC_OBJDIR)
165 189
166 $(BPF_HELPER_DEFS): $(srctree)/tools/include/u <<
167 $(QUIET_GEN)$(srctree)/scripts/bpf_doc <<
168 --file $(srctree)/tools/includ <<
169 <<
170 $(OUTPUT)libbpf.so: $(OUTPUT)libbpf.so.$(LIBBP 190 $(OUTPUT)libbpf.so: $(OUTPUT)libbpf.so.$(LIBBPF_VERSION)
171 191
172 $(OUTPUT)libbpf.so.$(LIBBPF_VERSION): $(BPF_IN !! 192 $(OUTPUT)libbpf.so.$(LIBBPF_VERSION): $(BPF_IN_SHARED)
173 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS !! 193 $(QUIET_LINK)$(CC) --shared -Wl,-soname,libbpf.so.$(LIBBPF_MAJOR_VERSION) \
174 --shared -Wl,-soname,libbpf.so !! 194 -Wl,--version-script=$(VERSION_SCRIPT) $^ -lelf -o $@
175 -Wl,--version-script=$(VERSION <<
176 @ln -sf $(@F) $(OUTPUT)libbpf.so 195 @ln -sf $(@F) $(OUTPUT)libbpf.so
177 @ln -sf $(@F) $(OUTPUT)libbpf.so.$(LIB 196 @ln -sf $(@F) $(OUTPUT)libbpf.so.$(LIBBPF_MAJOR_VERSION)
178 197
179 $(OUTPUT)libbpf.a: $(BPF_IN_STATIC) 198 $(OUTPUT)libbpf.a: $(BPF_IN_STATIC)
180 $(QUIET_LINK)$(RM) -f $@; $(AR) rcs $@ !! 199 $(QUIET_LINK)$(RM) $@; $(AR) rcs $@ $^
>> 200
>> 201 $(OUTPUT)test_libbpf: test_libbpf.cpp $(OUTPUT)libbpf.a
>> 202 $(QUIET_LINK)$(CXX) $(INCLUDES) $^ -lelf -o $@
181 203
182 $(OUTPUT)libbpf.pc: 204 $(OUTPUT)libbpf.pc:
183 $(QUIET_GEN)sed -e "s|@PREFIX@|$(prefi 205 $(QUIET_GEN)sed -e "s|@PREFIX@|$(prefix)|" \
184 -e "s|@LIBDIR@|$(libdir_SQ)|" 206 -e "s|@LIBDIR@|$(libdir_SQ)|" \
185 -e "s|@VERSION@|$(LIBBPF_VERSI 207 -e "s|@VERSION@|$(LIBBPF_VERSION)|" \
186 < libbpf.pc.template > $@ 208 < libbpf.pc.template > $@
187 209
188 check: check_abi check_version !! 210 check: check_abi
189 211
190 check_abi: $(OUTPUT)libbpf.so $(VERSION_SCRIPT !! 212 check_abi: $(OUTPUT)libbpf.so
191 @if [ "$(GLOBAL_SYM_COUNT)" != "$(VERS 213 @if [ "$(GLOBAL_SYM_COUNT)" != "$(VERSIONED_SYM_COUNT)" ]; then \
192 echo "Warning: Num of global s 214 echo "Warning: Num of global symbols in $(BPF_IN_SHARED)" \
193 "($(GLOBAL_SYM_COUNT)) do 215 "($(GLOBAL_SYM_COUNT)) does NOT match with num of" \
194 "versioned symbols in $^ 216 "versioned symbols in $^ ($(VERSIONED_SYM_COUNT))." \
195 "Please make sure all LIB 217 "Please make sure all LIBBPF_API symbols are" \
196 "versioned in $(VERSION_S 218 "versioned in $(VERSION_SCRIPT)." >&2; \
197 readelf -s --wide $(BPF_IN_SHA 219 readelf -s --wide $(BPF_IN_SHARED) | \
198 cut -d "@" -f1 | sed 's/_v 220 cut -d "@" -f1 | sed 's/_v[0-9]_[0-9]_[0-9].*//' | \
199 sed 's/\[.*\]//' | 221 sed 's/\[.*\]//' | \
200 awk '/GLOBAL/ && /DEFAULT/ 222 awk '/GLOBAL/ && /DEFAULT/ && !/UND/ {print $$NF}'| \
201 sort -u > $(OUTPUT)libbpf_ 223 sort -u > $(OUTPUT)libbpf_global_syms.tmp; \
202 readelf --dyn-syms --wide $(OU !! 224 readelf -s --wide $(OUTPUT)libbpf.so | \
203 sed 's/\[.*\]//' | <<
204 awk '/GLOBAL/ && /DEFAULT/ <<
205 grep -Eo '[^ ]+@LIBBPF_' | 225 grep -Eo '[^ ]+@LIBBPF_' | cut -d@ -f1 | \
206 sort -u > $(OUTPUT)libbpf_ 226 sort -u > $(OUTPUT)libbpf_versioned_syms.tmp; \
207 diff -u $(OUTPUT)libbpf_global 227 diff -u $(OUTPUT)libbpf_global_syms.tmp \
208 $(OUTPUT)libbpf_versioned 228 $(OUTPUT)libbpf_versioned_syms.tmp; \
209 rm $(OUTPUT)libbpf_global_syms 229 rm $(OUTPUT)libbpf_global_syms.tmp \
210 $(OUTPUT)libbpf_versioned_s 230 $(OUTPUT)libbpf_versioned_syms.tmp; \
211 exit 1; 231 exit 1; \
212 fi 232 fi
213 233
214 HDR_MAJ_VERSION := $(shell grep -oE '^$(pound) <<
215 HDR_MIN_VERSION := $(shell grep -oE '^$(pound) <<
216 <<
217 check_version: $(VERSION_SCRIPT) libbpf_versio <<
218 @if [ "$(HDR_MAJ_VERSION)" != "$(LIBBP <<
219 echo "Error: libbpf major vers <<
220 "'$(HDR_MAJ_VERSION)' != <<
221 exit 1; <<
222 fi <<
223 @if [ "$(HDR_MIN_VERSION)" != "$(LIBBP <<
224 echo "Error: libbpf minor vers <<
225 "'$(HDR_MIN_VERSION)' != <<
226 exit 1; <<
227 fi <<
228 <<
229 define do_install_mkdir 234 define do_install_mkdir
230 if [ ! -d '$(DESTDIR_SQ)$1' ]; then 235 if [ ! -d '$(DESTDIR_SQ)$1' ]; then \
231 $(INSTALL) -d -m 755 '$(DESTDI 236 $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$1'; \
232 fi 237 fi
233 endef 238 endef
234 239
235 define do_install 240 define do_install
236 if [ ! -d '$(DESTDIR_SQ)$2' ]; then 241 if [ ! -d '$(DESTDIR_SQ)$2' ]; then \
237 $(INSTALL) -d -m 755 '$(DESTDI 242 $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$2'; \
238 fi; 243 fi; \
239 $(INSTALL) $(if $3,-m $3,) $1 '$(DESTD 244 $(INSTALL) $(if $3,-m $3,) $1 '$(DESTDIR_SQ)$2'
240 endef 245 endef
241 246
242 install_lib: all_cmd 247 install_lib: all_cmd
243 $(call QUIET_INSTALL, $(LIB_TARGET)) \ 248 $(call QUIET_INSTALL, $(LIB_TARGET)) \
244 $(call do_install_mkdir,$(libd 249 $(call do_install_mkdir,$(libdir_SQ)); \
245 cp -fpR $(LIB_FILE) $(DESTDIR) 250 cp -fpR $(LIB_FILE) $(DESTDIR)$(libdir_SQ)
246 251
247 SRC_HDRS := bpf.h libbpf.h btf.h libbpf_common !! 252 install_headers:
248 bpf_helpers.h bpf_tracing.h bpf_en !! 253 $(call QUIET_INSTALL, headers) \
249 skel_internal.h libbpf_version.h u !! 254 $(call do_install,bpf.h,$(prefix)/include/bpf,644); \
250 GEN_HDRS := $(BPF_GENERATED) !! 255 $(call do_install,libbpf.h,$(prefix)/include/bpf,644); \
251 !! 256 $(call do_install,btf.h,$(prefix)/include/bpf,644); \
252 INSTALL_PFX := $(DESTDIR)$(prefix)/include/bpf !! 257 $(call do_install,libbpf_util.h,$(prefix)/include/bpf,644); \
253 INSTALL_SRC_HDRS := $(addprefix $(INSTALL_PFX) !! 258 $(call do_install,xsk.h,$(prefix)/include/bpf,644);
254 INSTALL_GEN_HDRS := $(addprefix $(INSTALL_PFX) <<
255 <<
256 $(INSTALL_SRC_HDRS): $(INSTALL_PFX)/%.h: %.h <<
257 $(call QUIET_INSTALL, $@) \ <<
258 $(call do_install,$<,$(prefix) <<
259 <<
260 $(INSTALL_GEN_HDRS): $(INSTALL_PFX)/%.h: $(OUT <<
261 $(call QUIET_INSTALL, $@) \ <<
262 $(call do_install,$<,$(prefix) <<
263 <<
264 install_headers: $(BPF_GENERATED) $(INSTALL_SR <<
265 $(call QUIET_INSTALL, libbpf_headers) <<
266 259
267 install_pkgconfig: $(PC_FILE) 260 install_pkgconfig: $(PC_FILE)
268 $(call QUIET_INSTALL, $(PC_FILE)) \ 261 $(call QUIET_INSTALL, $(PC_FILE)) \
269 $(call do_install,$(PC_FILE),$ 262 $(call do_install,$(PC_FILE),$(libdir_SQ)/pkgconfig,644)
270 263
271 install: install_lib install_pkgconfig install !! 264 install: install_lib install_pkgconfig
>> 265
>> 266 ### Cleaning rules
>> 267
>> 268 config-clean:
>> 269 $(call QUIET_CLEAN, config)
>> 270 $(Q)$(MAKE) -C $(srctree)/tools/build/feature/ clean >/dev/null
>> 271
>> 272 clean:
>> 273 $(call QUIET_CLEAN, libbpf) $(RM) -rf $(TARGETS) $(CXX_TEST_TARGET) \
>> 274 *.o *~ *.a *.so *.so.$(LIBBPF_MAJOR_VERSION) .*.d .*.cmd \
>> 275 *.pc LIBBPF-CFLAGS $(SHARED_OBJDIR) $(STATIC_OBJDIR)
>> 276 $(call QUIET_CLEAN, core-gen) $(RM) $(OUTPUT)FEATURE-DUMP.libbpf
272 277
273 clean: fixdep-clean <<
274 $(call QUIET_CLEAN, libbpf) $(RM) -rf <<
275 *~ .*.d .*.cmd LIBBPF-CFLAGS $ <<
276 $(SHARED_OBJDIR) $(STATIC_OBJD <<
277 $(addprefix $(OUTPUT), <<
278 *.o *.a *.so *.so. <<
279 278
280 PHONY += force cscope tags check check_abi che !! 279
>> 280 PHONY += force elfdep bpfdep
281 force: 281 force:
282 282
283 cscope: !! 283 elfdep:
284 ls *.c *.h > cscope.files !! 284 @if [ "$(feature-libelf)" != "1" ]; then echo "No libelf found"; exit 1 ; fi
285 cscope -b -q -I $(srctree)/include -f !! 285
286 !! 286 bpfdep:
287 tags: !! 287 @if [ "$(feature-bpf)" != "1" ]; then echo "BPF API too old"; exit 1 ; fi
288 $(RM) -f TAGS tags <<
289 ls *.c *.h | xargs $(TAGS_PROG) -a <<
290 288
291 # Declare the contents of the .PHONY variable 289 # Declare the contents of the .PHONY variable as phony. We keep that
292 # information in a variable so we can use it i 290 # information in a variable so we can use it in if_changed and friends.
293 .PHONY: $(PHONY) 291 .PHONY: $(PHONY)
294 <<
295 # Delete partially updated (corrupted) files o <<
296 .DELETE_ON_ERROR: <<
297 <<
298 help: <<
299 @echo 'libbpf common targets:' <<
300 @echo ' HINT: use "V=1" to enable ver <<
301 @echo ' all - build libraries and <<
302 @echo ' clean - remove all generate <<
303 @echo ' check - check ABI and versi <<
304 @echo '' <<
305 @echo 'libbpf install targets:' <<
306 @echo ' HINT: use "prefix"(defaults t <<
307 @echo ' to adjust target destin <<
308 @echo ' install - build and <<
309 @echo ' install_headers - install on <<
310 @echo '' <<
311 @echo 'libbpf make targets:' <<
312 @echo ' tags - use ctags to make t <<
313 @echo ' cscope - use cscope to make <<
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