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$(srct !! 59 FEATURE_TESTS = libelf libelf-mmap bpf reallocarray
>> 60 FEATURE_DISPLAY = libelf bpf
>> 61
>> 62 INCLUDES = -I. -I$(srctree)/tools/include -I$(srctree)/tools/arch/$(ARCH)/include/uapi -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
>> 140 VERSION_SCRIPT := libbpf.map
120 BPF_HELPER_DEFS := $(OUTPUT)bpf_helper_defs.h 141 BPF_HELPER_DEFS := $(OUTPUT)bpf_helper_defs.h
121 BPF_GENERATED := $(BPF_HELPER_DEFS) <<
122 142
123 LIB_TARGET := $(addprefix $(OUTPUT),$(LIB 143 LIB_TARGET := $(addprefix $(OUTPUT),$(LIB_TARGET))
124 LIB_FILE := $(addprefix $(OUTPUT),$(LIB 144 LIB_FILE := $(addprefix $(OUTPUT),$(LIB_FILE))
125 PC_FILE := $(addprefix $(OUTPUT),$(PC_ 145 PC_FILE := $(addprefix $(OUTPUT),$(PC_FILE))
126 146
127 TAGS_PROG := $(if $(shell which etags 2>/dev/n 147 TAGS_PROG := $(if $(shell which etags 2>/dev/null),etags,ctags)
128 148
129 GLOBAL_SYM_COUNT = $(shell readelf -s --wide $ 149 GLOBAL_SYM_COUNT = $(shell readelf -s --wide $(BPF_IN_SHARED) | \
130 cut -d "@" -f1 | se 150 cut -d "@" -f1 | sed 's/_v[0-9]_[0-9]_[0-9].*//' | \
131 sed 's/\[.*\]//' | 151 sed 's/\[.*\]//' | \
132 awk '/GLOBAL/ && /D !! 152 awk '/GLOBAL/ && /DEFAULT/ && !/UND/ {print $$NF}' | \
133 sort -u | wc -l) 153 sort -u | wc -l)
134 VERSIONED_SYM_COUNT = $(shell readelf --dyn-sy !! 154 VERSIONED_SYM_COUNT = $(shell readelf -s --wide $(OUTPUT)libbpf.so | \
135 sed 's/\[.*\]//' <<
136 awk '/GLOBAL/ && <<
137 grep -Eo '[^ ]+@ 155 grep -Eo '[^ ]+@LIBBPF_' | cut -d@ -f1 | sort -u | wc -l)
138 156
139 CMD_TARGETS = $(LIB_TARGET) $(PC_FILE) 157 CMD_TARGETS = $(LIB_TARGET) $(PC_FILE)
140 158
141 all: fixdep 159 all: fixdep
142 $(Q)$(MAKE) all_cmd 160 $(Q)$(MAKE) all_cmd
143 161
144 all_cmd: $(CMD_TARGETS) check 162 all_cmd: $(CMD_TARGETS) check
145 163
146 $(SHARED_OBJDIR) $(STATIC_OBJDIR): !! 164 $(BPF_IN_SHARED): force elfdep bpfdep $(BPF_HELPER_DEFS)
147 $(Q)mkdir -p $@ <<
148 <<
149 $(BPF_IN_SHARED): force $(BPF_GENERATED) | $(S <<
150 @(test -f ../../include/uapi/linux/bpf 165 @(test -f ../../include/uapi/linux/bpf.h -a -f ../../../include/uapi/linux/bpf.h && ( \
151 (diff -B ../../include/uapi/linux/bpf. 166 (diff -B ../../include/uapi/linux/bpf.h ../../../include/uapi/linux/bpf.h >/dev/null) || \
152 echo "Warning: Kernel ABI header at 't 167 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 168 @(test -f ../../include/uapi/linux/bpf_common.h -a -f ../../../include/uapi/linux/bpf_common.h && ( \
154 (diff -B ../../include/uapi/linux/bpf_ 169 (diff -B ../../include/uapi/linux/bpf_common.h ../../../include/uapi/linux/bpf_common.h >/dev/null) || \
155 echo "Warning: Kernel ABI header at 't 170 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
>> 171 @(test -f ../../include/uapi/linux/netlink.h -a -f ../../../include/uapi/linux/netlink.h && ( \
>> 172 (diff -B ../../include/uapi/linux/netlink.h ../../../include/uapi/linux/netlink.h >/dev/null) || \
>> 173 echo "Warning: Kernel ABI header at 'tools/include/uapi/linux/netlink.h' differs from latest version at 'include/uapi/linux/netlink.h'" >&2 )) || true
>> 174 @(test -f ../../include/uapi/linux/if_link.h -a -f ../../../include/uapi/linux/if_link.h && ( \
>> 175 (diff -B ../../include/uapi/linux/if_link.h ../../../include/uapi/linux/if_link.h >/dev/null) || \
>> 176 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_ 177 @(test -f ../../include/uapi/linux/if_xdp.h -a -f ../../../include/uapi/linux/if_xdp.h && ( \
157 (diff -B ../../include/uapi/linux/if_x 178 (diff -B ../../include/uapi/linux/if_xdp.h ../../../include/uapi/linux/if_xdp.h >/dev/null) || \
158 echo "Warning: Kernel ABI header at 't 179 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 180 $(Q)$(MAKE) $(build)=libbpf OUTPUT=$(SHARED_OBJDIR) CFLAGS="$(CFLAGS) $(SHLIB_FLAGS)"
161 181
162 $(BPF_IN_STATIC): force $(BPF_GENERATED) | $(S !! 182 $(BPF_IN_STATIC): force elfdep bpfdep $(BPF_HELPER_DEFS)
163 $(SILENT_MAKE) -C $(srctree)/tools/bui <<
164 $(Q)$(MAKE) $(build)=libbpf OUTPUT=$(S 183 $(Q)$(MAKE) $(build)=libbpf OUTPUT=$(STATIC_OBJDIR)
165 184
166 $(BPF_HELPER_DEFS): $(srctree)/tools/include/u 185 $(BPF_HELPER_DEFS): $(srctree)/tools/include/uapi/linux/bpf.h
167 $(QUIET_GEN)$(srctree)/scripts/bpf_doc !! 186 $(Q)$(srctree)/scripts/bpf_helpers_doc.py --header \
168 --file $(srctree)/tools/includ 187 --file $(srctree)/tools/include/uapi/linux/bpf.h > $(BPF_HELPER_DEFS)
169 188
170 $(OUTPUT)libbpf.so: $(OUTPUT)libbpf.so.$(LIBBP 189 $(OUTPUT)libbpf.so: $(OUTPUT)libbpf.so.$(LIBBPF_VERSION)
171 190
172 $(OUTPUT)libbpf.so.$(LIBBPF_VERSION): $(BPF_IN !! 191 $(OUTPUT)libbpf.so.$(LIBBPF_VERSION): $(BPF_IN_SHARED)
173 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS !! 192 $(QUIET_LINK)$(CC) $(LDFLAGS) \
174 --shared -Wl,-soname,libbpf.so 193 --shared -Wl,-soname,libbpf.so.$(LIBBPF_MAJOR_VERSION) \
175 -Wl,--version-script=$(VERSION !! 194 -Wl,--version-script=$(VERSION_SCRIPT) $^ -lelf -o $@
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 $@ $^
181 200
182 $(OUTPUT)libbpf.pc: 201 $(OUTPUT)libbpf.pc:
183 $(QUIET_GEN)sed -e "s|@PREFIX@|$(prefi 202 $(QUIET_GEN)sed -e "s|@PREFIX@|$(prefix)|" \
184 -e "s|@LIBDIR@|$(libdir_SQ)|" 203 -e "s|@LIBDIR@|$(libdir_SQ)|" \
185 -e "s|@VERSION@|$(LIBBPF_VERSI 204 -e "s|@VERSION@|$(LIBBPF_VERSION)|" \
186 < libbpf.pc.template > $@ 205 < libbpf.pc.template > $@
187 206
188 check: check_abi check_version !! 207 check: check_abi
189 208
190 check_abi: $(OUTPUT)libbpf.so $(VERSION_SCRIPT !! 209 check_abi: $(OUTPUT)libbpf.so
191 @if [ "$(GLOBAL_SYM_COUNT)" != "$(VERS 210 @if [ "$(GLOBAL_SYM_COUNT)" != "$(VERSIONED_SYM_COUNT)" ]; then \
192 echo "Warning: Num of global s 211 echo "Warning: Num of global symbols in $(BPF_IN_SHARED)" \
193 "($(GLOBAL_SYM_COUNT)) do 212 "($(GLOBAL_SYM_COUNT)) does NOT match with num of" \
194 "versioned symbols in $^ 213 "versioned symbols in $^ ($(VERSIONED_SYM_COUNT))." \
195 "Please make sure all LIB 214 "Please make sure all LIBBPF_API symbols are" \
196 "versioned in $(VERSION_S 215 "versioned in $(VERSION_SCRIPT)." >&2; \
197 readelf -s --wide $(BPF_IN_SHA 216 readelf -s --wide $(BPF_IN_SHARED) | \
198 cut -d "@" -f1 | sed 's/_v 217 cut -d "@" -f1 | sed 's/_v[0-9]_[0-9]_[0-9].*//' | \
199 sed 's/\[.*\]//' | 218 sed 's/\[.*\]//' | \
200 awk '/GLOBAL/ && /DEFAULT/ 219 awk '/GLOBAL/ && /DEFAULT/ && !/UND/ {print $$NF}'| \
201 sort -u > $(OUTPUT)libbpf_ 220 sort -u > $(OUTPUT)libbpf_global_syms.tmp; \
202 readelf --dyn-syms --wide $(OU !! 221 readelf -s --wide $(OUTPUT)libbpf.so | \
203 sed 's/\[.*\]//' | <<
204 awk '/GLOBAL/ && /DEFAULT/ <<
205 grep -Eo '[^ ]+@LIBBPF_' | 222 grep -Eo '[^ ]+@LIBBPF_' | cut -d@ -f1 | \
206 sort -u > $(OUTPUT)libbpf_ 223 sort -u > $(OUTPUT)libbpf_versioned_syms.tmp; \
207 diff -u $(OUTPUT)libbpf_global 224 diff -u $(OUTPUT)libbpf_global_syms.tmp \
208 $(OUTPUT)libbpf_versioned 225 $(OUTPUT)libbpf_versioned_syms.tmp; \
209 rm $(OUTPUT)libbpf_global_syms 226 rm $(OUTPUT)libbpf_global_syms.tmp \
210 $(OUTPUT)libbpf_versioned_s 227 $(OUTPUT)libbpf_versioned_syms.tmp; \
211 exit 1; 228 exit 1; \
212 fi 229 fi
213 230
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 "'$(HDR_MIN_VERSION)' != <<
226 exit 1; <<
227 fi <<
228 <<
229 define do_install_mkdir 231 define do_install_mkdir
230 if [ ! -d '$(DESTDIR_SQ)$1' ]; then 232 if [ ! -d '$(DESTDIR_SQ)$1' ]; then \
231 $(INSTALL) -d -m 755 '$(DESTDI 233 $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$1'; \
232 fi 234 fi
233 endef 235 endef
234 236
235 define do_install 237 define do_install
236 if [ ! -d '$(DESTDIR_SQ)$2' ]; then 238 if [ ! -d '$(DESTDIR_SQ)$2' ]; then \
237 $(INSTALL) -d -m 755 '$(DESTDI 239 $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$2'; \
238 fi; 240 fi; \
239 $(INSTALL) $(if $3,-m $3,) $1 '$(DESTD !! 241 $(INSTALL) $1 $(if $3,-m $3,) '$(DESTDIR_SQ)$2'
240 endef 242 endef
241 243
242 install_lib: all_cmd 244 install_lib: all_cmd
243 $(call QUIET_INSTALL, $(LIB_TARGET)) \ 245 $(call QUIET_INSTALL, $(LIB_TARGET)) \
244 $(call do_install_mkdir,$(libd 246 $(call do_install_mkdir,$(libdir_SQ)); \
245 cp -fpR $(LIB_FILE) $(DESTDIR) 247 cp -fpR $(LIB_FILE) $(DESTDIR)$(libdir_SQ)
246 248
247 SRC_HDRS := bpf.h libbpf.h btf.h libbpf_common !! 249 install_headers: $(BPF_HELPER_DEFS)
248 bpf_helpers.h bpf_tracing.h bpf_en !! 250 $(call QUIET_INSTALL, headers) \
249 skel_internal.h libbpf_version.h u !! 251 $(call do_install,bpf.h,$(prefix)/include/bpf,644); \
250 GEN_HDRS := $(BPF_GENERATED) !! 252 $(call do_install,libbpf.h,$(prefix)/include/bpf,644); \
251 !! 253 $(call do_install,btf.h,$(prefix)/include/bpf,644); \
252 INSTALL_PFX := $(DESTDIR)$(prefix)/include/bpf !! 254 $(call do_install,libbpf_util.h,$(prefix)/include/bpf,644); \
253 INSTALL_SRC_HDRS := $(addprefix $(INSTALL_PFX) !! 255 $(call do_install,xsk.h,$(prefix)/include/bpf,644); \
254 INSTALL_GEN_HDRS := $(addprefix $(INSTALL_PFX) !! 256 $(call do_install,bpf_helpers.h,$(prefix)/include/bpf,644); \
255 !! 257 $(call do_install,$(BPF_HELPER_DEFS),$(prefix)/include/bpf,644); \
256 $(INSTALL_SRC_HDRS): $(INSTALL_PFX)/%.h: %.h !! 258 $(call do_install,bpf_tracing.h,$(prefix)/include/bpf,644); \
257 $(call QUIET_INSTALL, $@) \ !! 259 $(call do_install,bpf_endian.h,$(prefix)/include/bpf,644); \
258 $(call do_install,$<,$(prefix) !! 260 $(call do_install,bpf_core_read.h,$(prefix)/include/bpf,644);
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) <<
266 261
267 install_pkgconfig: $(PC_FILE) 262 install_pkgconfig: $(PC_FILE)
268 $(call QUIET_INSTALL, $(PC_FILE)) \ 263 $(call QUIET_INSTALL, $(PC_FILE)) \
269 $(call do_install,$(PC_FILE),$ 264 $(call do_install,$(PC_FILE),$(libdir_SQ)/pkgconfig,644)
270 265
271 install: install_lib install_pkgconfig install !! 266 install: install_lib install_pkgconfig
>> 267
>> 268 ### Cleaning rules
272 269
273 clean: fixdep-clean !! 270 config-clean:
274 $(call QUIET_CLEAN, libbpf) $(RM) -rf !! 271 $(call QUIET_CLEAN, config)
275 *~ .*.d .*.cmd LIBBPF-CFLAGS $ !! 272 $(Q)$(MAKE) -C $(srctree)/tools/build/feature/ clean >/dev/null
276 $(SHARED_OBJDIR) $(STATIC_OBJD <<
277 $(addprefix $(OUTPUT), <<
278 *.o *.a *.so *.so. <<
279 273
280 PHONY += force cscope tags check check_abi che !! 274 clean:
>> 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) \
>> 278 $(SHARED_OBJDIR) $(STATIC_OBJDIR)
>> 279 $(call QUIET_CLEAN, core-gen) $(RM) $(OUTPUT)FEATURE-DUMP.libbpf
>> 280
>> 281
>> 282
>> 283 PHONY += force elfdep bpfdep cscope tags
281 force: 284 force:
282 285
>> 286 elfdep:
>> 287 @if [ "$(feature-libelf)" != "1" ]; then echo "No libelf found"; exit 1 ; fi
>> 288
>> 289 bpfdep:
>> 290 @if [ "$(feature-bpf)" != "1" ]; then echo "BPF API too old"; exit 1 ; fi
>> 291
283 cscope: 292 cscope:
284 ls *.c *.h > cscope.files 293 ls *.c *.h > cscope.files
285 cscope -b -q -I $(srctree)/include -f 294 cscope -b -q -I $(srctree)/include -f cscope.out
286 295
287 tags: 296 tags:
288 $(RM) -f TAGS tags !! 297 rm -f TAGS tags
289 ls *.c *.h | xargs $(TAGS_PROG) -a 298 ls *.c *.h | xargs $(TAGS_PROG) -a
290 299
291 # Declare the contents of the .PHONY variable 300 # Declare the contents of the .PHONY variable as phony. We keep that
292 # information in a variable so we can use it i 301 # information in a variable so we can use it in if_changed and friends.
293 .PHONY: $(PHONY) 302 .PHONY: $(PHONY)
294 303
295 # Delete partially updated (corrupted) files o 304 # Delete partially updated (corrupted) files on error
296 .DELETE_ON_ERROR: 305 .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 <<
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.