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
+= trace_output
18 hostprogs-y
+= lathist
19 hostprogs-y
+= offwaketime
20 hostprogs-y
+= spintest
21 hostprogs-y
+= map_perf_test
22 hostprogs-y
+= test_overhead
23 hostprogs-y
+= test_cgrp2_array_pin
27 test_verifier-objs
:= test_verifier.o libbpf.o
28 test_maps-objs
:= test_maps.o libbpf.o
29 sock_example-objs
:= sock_example.o libbpf.o
30 fds_example-objs
:= bpf_load.o libbpf.o fds_example.o
31 sockex1-objs
:= bpf_load.o libbpf.o sockex1_user.o
32 sockex2-objs
:= bpf_load.o libbpf.o sockex2_user.o
33 sockex3-objs
:= bpf_load.o libbpf.o sockex3_user.o
34 tracex1-objs
:= bpf_load.o libbpf.o tracex1_user.o
35 tracex2-objs
:= bpf_load.o libbpf.o tracex2_user.o
36 tracex3-objs
:= bpf_load.o libbpf.o tracex3_user.o
37 tracex4-objs
:= bpf_load.o libbpf.o tracex4_user.o
38 tracex5-objs
:= bpf_load.o libbpf.o tracex5_user.o
39 tracex6-objs
:= bpf_load.o libbpf.o tracex6_user.o
40 trace_output-objs
:= bpf_load.o libbpf.o trace_output_user.o
41 lathist-objs
:= bpf_load.o libbpf.o lathist_user.o
42 offwaketime-objs
:= bpf_load.o libbpf.o offwaketime_user.o
43 spintest-objs
:= bpf_load.o libbpf.o spintest_user.o
44 map_perf_test-objs
:= bpf_load.o libbpf.o map_perf_test_user.o
45 test_overhead-objs
:= bpf_load.o libbpf.o test_overhead_user.o
46 test_cgrp2_array_pin-objs
:= libbpf.o test_cgrp2_array_pin.o
47 xdp1-objs
:= bpf_load.o libbpf.o xdp1_user.o
48 # reuse xdp1 source intentionally
49 xdp2-objs
:= bpf_load.o libbpf.o xdp1_user.o
51 # Tell kbuild to always build the programs
52 always
:= $(hostprogs-y
)
53 always
+= sockex1_kern.o
54 always
+= sockex2_kern.o
55 always
+= sockex3_kern.o
56 always
+= tracex1_kern.o
57 always
+= tracex2_kern.o
58 always
+= tracex3_kern.o
59 always
+= tracex4_kern.o
60 always
+= tracex5_kern.o
61 always
+= tracex6_kern.o
62 always
+= trace_output_kern.o
63 always
+= tcbpf1_kern.o
64 always
+= lathist_kern.o
65 always
+= offwaketime_kern.o
66 always
+= spintest_kern.o
67 always
+= map_perf_test_kern.o
68 always
+= test_overhead_tp_kern.o
69 always
+= test_overhead_kprobe_kern.o
70 always
+= parse_varlen.o parse_simple.o parse_ldabs.o
71 always
+= test_cgrp2_tc_kern.o
75 HOSTCFLAGS
+= -I
$(objtree
)/usr
/include
77 HOSTCFLAGS_bpf_load.o
+= -I
$(objtree
)/usr
/include -Wno-unused-variable
78 HOSTLOADLIBES_fds_example
+= -lelf
79 HOSTLOADLIBES_sockex1
+= -lelf
80 HOSTLOADLIBES_sockex2
+= -lelf
81 HOSTLOADLIBES_sockex3
+= -lelf
82 HOSTLOADLIBES_tracex1
+= -lelf
83 HOSTLOADLIBES_tracex2
+= -lelf
84 HOSTLOADLIBES_tracex3
+= -lelf
85 HOSTLOADLIBES_tracex4
+= -lelf
-lrt
86 HOSTLOADLIBES_tracex5
+= -lelf
87 HOSTLOADLIBES_tracex6
+= -lelf
88 HOSTLOADLIBES_trace_output
+= -lelf
-lrt
89 HOSTLOADLIBES_lathist
+= -lelf
90 HOSTLOADLIBES_offwaketime
+= -lelf
91 HOSTLOADLIBES_spintest
+= -lelf
92 HOSTLOADLIBES_map_perf_test
+= -lelf
-lrt
93 HOSTLOADLIBES_test_overhead
+= -lelf
-lrt
94 HOSTLOADLIBES_xdp1
+= -lelf
95 HOSTLOADLIBES_xdp2
+= -lelf
97 # Allows pointing LLC/CLANG to a LLVM backend with bpf support, redefine on cmdline:
98 # make samples/bpf/ LLC=~/git/llvm/build/bin/llc CLANG=~/git/llvm/build/bin/clang
102 # Trick to allow make to be run from this directory
104 $(MAKE
) -C ..
/..
/ $$PWD/
107 $(MAKE
) -C ..
/..
/ M
=$$PWD clean
110 # Verify LLVM compiler tools are available and bpf target is supported by llc
111 .PHONY
: verify_cmds verify_target_bpf
$(CLANG
) $(LLC
)
113 verify_cmds
: $(CLANG
) $(LLC
)
114 @for TOOL in
$^
; do \
115 if
! (which
-- "$${TOOL}" > /dev
/null
2>&1); then \
116 echo
"*** ERROR: Cannot find LLVM tool $${TOOL}" ;\
121 verify_target_bpf
: verify_cmds
122 @if
! (${LLC} -march
=bpf
-mattr
=help
> /dev
/null
2>&1); then \
123 echo
"*** ERROR: LLVM (${LLC}) does not support 'bpf' target" ;\
124 echo
" NOTICE: LLVM version >= 3.7.1 required" ;\
128 $(src
)/*.c
: verify_target_bpf
130 # asm/sysreg.h - inline assembly used by it is incompatible with llvm.
131 # But, there is no easy way to fix it, so just exclude it since it is
132 # useless for BPF samples.
133 $(obj
)/%.o
: $(src
)/%.c
134 $(CLANG
) $(NOSTDINC_FLAGS
) $(LINUXINCLUDE
) $(EXTRA_CFLAGS
) \
135 -D__KERNEL__
-D__ASM_SYSREG_H
-Wno-unused-value
-Wno-pointer-sign \
136 -Wno-compare-distinct-pointer-types \
137 -O2
-emit-llvm
-c
$< -o
-|
$(LLC
) -march
=bpf
-filetype
=obj
-o
$@