Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1# SPDX-License-Identifier: GPL-2.0-only
2
3include $(srctree)/tools/scripts/utilities.mak
4
5STOP_ERROR :=
6
7LIBTRACEEVENT_MIN_VERSION = 1.5
8LIBTRACEFS_MIN_VERSION = 1.6
9
10ifndef ($(NO_LIBTRACEEVENT),1)
11 ifeq ($(call get-executable,$(PKG_CONFIG)),)
12 $(error Error: $(PKG_CONFIG) needed by libtraceevent/libtracefs is missing on this system, please install it)
13 endif
14endif
15
16define lib_setup
17 $(eval LIB_INCLUDES += $(shell sh -c "$(PKG_CONFIG) --cflags lib$(1)"))
18 $(eval LDFLAGS += $(shell sh -c "$(PKG_CONFIG) --libs-only-L lib$(1)"))
19 $(eval EXTLIBS += $(shell sh -c "$(PKG_CONFIG) --libs-only-l lib$(1)"))
20endef
21
22$(call feature_check,libtraceevent)
23ifeq ($(feature-libtraceevent), 1)
24 $(call detected,CONFIG_LIBTRACEEVENT)
25
26 TEST = $(shell sh -c "$(PKG_CONFIG) --atleast-version $(LIBTRACEEVENT_MIN_VERSION) libtraceevent > /dev/null 2>&1 && echo y || echo n")
27 ifeq ($(TEST),n)
28 $(info libtraceevent version is too low, it must be at least $(LIBTRACEEVENT_MIN_VERSION))
29 STOP_ERROR := 1
30 endif
31
32 $(call lib_setup,traceevent)
33else
34 STOP_ERROR := 1
35 $(info libtraceevent is missing. Please install libtraceevent-dev/libtraceevent-devel)
36endif
37
38$(call feature_check,libtracefs)
39ifeq ($(feature-libtracefs), 1)
40 $(call detected,CONFIG_LIBTRACEFS)
41
42 TEST = $(shell sh -c "$(PKG_CONFIG) --atleast-version $(LIBTRACEFS_MIN_VERSION) libtracefs > /dev/null 2>&1 && echo y || echo n")
43 ifeq ($(TEST),n)
44 $(info libtracefs version is too low, it must be at least $(LIBTRACEFS_MIN_VERSION))
45 STOP_ERROR := 1
46 endif
47
48 $(call lib_setup,tracefs)
49else
50 STOP_ERROR := 1
51 $(info libtracefs is missing. Please install libtracefs-dev/libtracefs-devel)
52endif
53
54$(call feature_check,libcpupower)
55ifeq ($(feature-libcpupower), 1)
56 $(call detected,CONFIG_LIBCPUPOWER)
57 CFLAGS += -DHAVE_LIBCPUPOWER_SUPPORT
58 EXTLIBS += -lcpupower
59else
60 $(info libcpupower is missing, building without --deepest-idle-state support.)
61 $(info Please install libcpupower-dev/kernel-tools-libs-devel)
62endif
63
64ifndef BUILD_BPF_SKEL
65 # BPF skeletons are used to implement improved sample collection, enable
66 # them by default.
67 BUILD_BPF_SKEL := 1
68endif
69
70ifeq ($(BUILD_BPF_SKEL),0)
71 $(info BPF skeleton support disabled, building without BPF skeleton support.)
72endif
73
74$(call feature_check,libbpf)
75ifeq ($(feature-libbpf), 1)
76 $(call detected,CONFIG_LIBBPF)
77else
78 $(info libbpf is missing, building without BPF skeleton support.)
79 $(info Please install libbpf-dev/libbpf-devel)
80 BUILD_BPF_SKEL := 0
81endif
82
83$(call feature_check,clang-bpf-co-re)
84ifeq ($(feature-clang-bpf-co-re), 1)
85 $(call detected,CONFIG_CLANG_BPF_CO_RE)
86else
87 $(info clang is missing or does not support BPF CO-RE, building without BPF skeleton support.)
88 $(info Please install clang)
89 BUILD_BPF_SKEL := 0
90endif
91
92$(call feature_check,bpftool-skeletons)
93ifeq ($(feature-bpftool-skeletons), 1)
94 $(call detected,CONFIG_BPFTOOL_SKELETONS)
95else
96 $(info bpftool is missing or not supporting skeletons, building without BPF skeleton support.)
97 $(info Please install bpftool)
98 BUILD_BPF_SKEL := 0
99endif
100
101ifeq ($(BUILD_BPF_SKEL),1)
102 CFLAGS += -DHAVE_BPF_SKEL
103 EXTLIBS += -lbpf
104endif
105
106ifeq ($(STOP_ERROR),1)
107 $(error Please, check the errors above.)
108endif