1 # kbuild trick to avoid linker error. Can be omitted if a module is built.
4 # List of programs to build
5 hostprogs-y
:= test_verifier test_maps
6 hostprogs-y
+= sock_example
7 hostprogs-y
+= fds_example
10 hostprogs-y
+= sockex3
11 hostprogs-y
+= tracex1
12 hostprogs-y
+= tracex2
13 hostprogs-y
+= tracex3
14 hostprogs-y
+= tracex4
15 hostprogs-y
+= tracex5
16 hostprogs-y
+= tracex6
17 hostprogs-y
+= test_probe_write_user
18 hostprogs-y
+= trace_output
19 hostprogs-y
+= lathist
20 hostprogs-y
+= offwaketime
21 hostprogs-y
+= spintest
22 hostprogs-y
+= map_perf_test
23 hostprogs-y
+= test_overhead
24 hostprogs-y
+= test_cgrp2_array_pin
27 hostprogs-y
+= test_current_task_under_cgroup
28 hostprogs-y
+= trace_event
29 hostprogs-y
+= sampleip
30 hostprogs-y
+= tc_l2_redirect
32 test_verifier-objs
:= test_verifier.o libbpf.o
33 test_maps-objs
:= test_maps.o libbpf.o
34 sock_example-objs
:= sock_example.o libbpf.o
35 fds_example-objs
:= bpf_load.o libbpf.o fds_example.o
36 sockex1-objs
:= bpf_load.o libbpf.o sockex1_user.o
37 sockex2-objs
:= bpf_load.o libbpf.o sockex2_user.o
38 sockex3-objs
:= bpf_load.o libbpf.o sockex3_user.o
39 tracex1-objs
:= bpf_load.o libbpf.o tracex1_user.o
40 tracex2-objs
:= bpf_load.o libbpf.o tracex2_user.o
41 tracex3-objs
:= bpf_load.o libbpf.o tracex3_user.o
42 tracex4-objs
:= bpf_load.o libbpf.o tracex4_user.o
43 tracex5-objs
:= bpf_load.o libbpf.o tracex5_user.o
44 tracex6-objs
:= bpf_load.o libbpf.o tracex6_user.o
45 test_probe_write_user-objs
:= bpf_load.o libbpf.o test_probe_write_user_user.o
46 trace_output-objs
:= bpf_load.o libbpf.o trace_output_user.o
47 lathist-objs
:= bpf_load.o libbpf.o lathist_user.o
48 offwaketime-objs
:= bpf_load.o libbpf.o offwaketime_user.o
49 spintest-objs
:= bpf_load.o libbpf.o spintest_user.o
50 map_perf_test-objs
:= bpf_load.o libbpf.o map_perf_test_user.o
51 test_overhead-objs
:= bpf_load.o libbpf.o test_overhead_user.o
52 test_cgrp2_array_pin-objs
:= libbpf.o test_cgrp2_array_pin.o
53 xdp1-objs
:= bpf_load.o libbpf.o xdp1_user.o
54 # reuse xdp1 source intentionally
55 xdp2-objs
:= bpf_load.o libbpf.o xdp1_user.o
56 test_current_task_under_cgroup-objs
:= bpf_load.o libbpf.o \
57 test_current_task_under_cgroup_user.o
58 trace_event-objs
:= bpf_load.o libbpf.o trace_event_user.o
59 sampleip-objs
:= bpf_load.o libbpf.o sampleip_user.o
60 tc_l2_redirect-objs
:= bpf_load.o libbpf.o tc_l2_redirect_user.o
62 # Tell kbuild to always build the programs
63 always
:= $(hostprogs-y
)
64 always
+= sockex1_kern.o
65 always
+= sockex2_kern.o
66 always
+= sockex3_kern.o
67 always
+= tracex1_kern.o
68 always
+= tracex2_kern.o
69 always
+= tracex3_kern.o
70 always
+= tracex4_kern.o
71 always
+= tracex5_kern.o
72 always
+= tracex6_kern.o
73 always
+= test_probe_write_user_kern.o
74 always
+= trace_output_kern.o
75 always
+= tcbpf1_kern.o
76 always
+= tcbpf2_kern.o
77 always
+= tc_l2_redirect_kern.o
78 always
+= lathist_kern.o
79 always
+= offwaketime_kern.o
80 always
+= spintest_kern.o
81 always
+= map_perf_test_kern.o
82 always
+= test_overhead_tp_kern.o
83 always
+= test_overhead_kprobe_kern.o
84 always
+= parse_varlen.o parse_simple.o parse_ldabs.o
85 always
+= test_cgrp2_tc_kern.o
88 always
+= test_current_task_under_cgroup_kern.o
89 always
+= trace_event_kern.o
90 always
+= sampleip_kern.o
92 HOSTCFLAGS
+= -I
$(objtree
)/usr
/include
94 HOSTCFLAGS_bpf_load.o
+= -I
$(objtree
)/usr
/include -Wno-unused-variable
95 HOSTLOADLIBES_fds_example
+= -lelf
96 HOSTLOADLIBES_sockex1
+= -lelf
97 HOSTLOADLIBES_sockex2
+= -lelf
98 HOSTLOADLIBES_sockex3
+= -lelf
99 HOSTLOADLIBES_tracex1
+= -lelf
100 HOSTLOADLIBES_tracex2
+= -lelf
101 HOSTLOADLIBES_tracex3
+= -lelf
102 HOSTLOADLIBES_tracex4
+= -lelf
-lrt
103 HOSTLOADLIBES_tracex5
+= -lelf
104 HOSTLOADLIBES_tracex6
+= -lelf
105 HOSTLOADLIBES_test_probe_write_user
+= -lelf
106 HOSTLOADLIBES_trace_output
+= -lelf
-lrt
107 HOSTLOADLIBES_lathist
+= -lelf
108 HOSTLOADLIBES_offwaketime
+= -lelf
109 HOSTLOADLIBES_spintest
+= -lelf
110 HOSTLOADLIBES_map_perf_test
+= -lelf
-lrt
111 HOSTLOADLIBES_test_overhead
+= -lelf
-lrt
112 HOSTLOADLIBES_xdp1
+= -lelf
113 HOSTLOADLIBES_xdp2
+= -lelf
114 HOSTLOADLIBES_test_current_task_under_cgroup
+= -lelf
115 HOSTLOADLIBES_trace_event
+= -lelf
116 HOSTLOADLIBES_sampleip
+= -lelf
117 HOSTLOADLIBES_tc_l2_redirect
+= -l elf
119 # Allows pointing LLC/CLANG to a LLVM backend with bpf support, redefine on cmdline:
120 # make samples/bpf/ LLC=~/git/llvm/build/bin/llc CLANG=~/git/llvm/build/bin/clang
124 # Trick to allow make to be run from this directory
126 $(MAKE
) -C ..
/..
/ $$PWD/
129 $(MAKE
) -C ..
/..
/ M
=$$PWD clean
132 # Verify LLVM compiler tools are available and bpf target is supported by llc
133 .PHONY
: verify_cmds verify_target_bpf
$(CLANG
) $(LLC
)
135 verify_cmds
: $(CLANG
) $(LLC
)
136 @for TOOL in
$^
; do \
137 if
! (which
-- "$${TOOL}" > /dev
/null
2>&1); then \
138 echo
"*** ERROR: Cannot find LLVM tool $${TOOL}" ;\
143 verify_target_bpf
: verify_cmds
144 @if
! (${LLC} -march
=bpf
-mattr
=help
> /dev
/null
2>&1); then \
145 echo
"*** ERROR: LLVM (${LLC}) does not support 'bpf' target" ;\
146 echo
" NOTICE: LLVM version >= 3.7.1 required" ;\
150 $(src
)/*.c
: verify_target_bpf
152 # asm/sysreg.h - inline assembly used by it is incompatible with llvm.
153 # But, there is no easy way to fix it, so just exclude it since it is
154 # useless for BPF samples.
155 $(obj
)/%.o
: $(src
)/%.c
156 $(CLANG
) $(NOSTDINC_FLAGS
) $(LINUXINCLUDE
) $(EXTRA_CFLAGS
) \
157 -D__KERNEL__
-D__ASM_SYSREG_H
-Wno-unused-value
-Wno-pointer-sign \
158 -Wno-compare-distinct-pointer-types \
159 -O2
-emit-llvm
-c
$< -o
-|
$(LLC
) -march
=bpf
-filetype
=obj
-o
$@