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
3ifeq ($(srctree),)
4 srctree := $(patsubst %/,%,$(dir $(CURDIR)))
5 srctree := $(patsubst %/,%,$(dir $(srctree)))
6 srctree := $(patsubst %/,%,$(dir $(srctree)))
7endif
8
9include $(srctree)/tools/scripts/Makefile.include
10
11# O is an alias for OUTPUT
12OUTPUT := $(O)
13
14ifeq ($(OUTPUT),)
15 OUTPUT := $(CURDIR)
16else
17 # subdir is used by the ../Makefile in $(call descend,)
18 ifneq ($(subdir),)
19 OUTPUT := $(OUTPUT)/$(subdir)
20 endif
21endif
22
23ifneq ($(patsubst %/,,$(lastword $(OUTPUT))),)
24 OUTPUT := $(OUTPUT)/
25endif
26
27RTLA := $(OUTPUT)rtla
28RTLA_IN := $(RTLA)-in.o
29
30VERSION := $(shell sh -c "make -sC ../../.. kernelversion | grep -v make")
31DOCSRC := ../../../Documentation/tools/rtla/
32
33FEATURE_TESTS := libtraceevent
34FEATURE_TESTS += libtracefs
35FEATURE_TESTS += libcpupower
36FEATURE_TESTS += libbpf
37FEATURE_TESTS += clang-bpf-co-re
38FEATURE_TESTS += bpftool-skeletons
39FEATURE_DISPLAY := libtraceevent
40FEATURE_DISPLAY += libtracefs
41FEATURE_DISPLAY += libcpupower
42FEATURE_DISPLAY += libbpf
43FEATURE_DISPLAY += clang-bpf-co-re
44FEATURE_DISPLAY += bpftool-skeletons
45
46all: $(RTLA)
47
48include $(srctree)/tools/build/Makefile.include
49include Makefile.rtla
50
51# check for dependencies only on required targets
52NON_CONFIG_TARGETS := clean install tarball doc doc_clean doc_install
53
54config := 1
55ifdef MAKECMDGOALS
56ifeq ($(filter-out $(NON_CONFIG_TARGETS),$(MAKECMDGOALS)),)
57 config := 0
58endif
59endif
60
61ifeq ($(config),1)
62 include $(srctree)/tools/build/Makefile.feature
63 include Makefile.config
64endif
65
66CFLAGS += $(INCLUDES) $(LIB_INCLUDES)
67
68export CFLAGS OUTPUT srctree
69
70ifeq ($(BUILD_BPF_SKEL),1)
71src/timerlat.bpf.o: src/timerlat.bpf.c
72 $(QUIET_CLANG)$(CLANG) -g -O2 -target bpf -c $(filter %.c,$^) -o $@
73
74src/timerlat.skel.h: src/timerlat.bpf.o
75 $(QUIET_GENSKEL)$(SYSTEM_BPFTOOL) gen skeleton $< > $@
76else
77src/timerlat.skel.h:
78 $(Q)echo '/* BPF skeleton is disabled */' > src/timerlat.skel.h
79endif
80
81$(RTLA): $(RTLA_IN)
82 $(QUIET_LINK)$(CC) $(LDFLAGS) -o $(RTLA) $(RTLA_IN) $(EXTLIBS)
83
84static: $(RTLA_IN)
85 $(eval LDFLAGS += -static)
86 $(QUIET_LINK)$(CC) -static $(LDFLAGS) -o $(RTLA)-static $(RTLA_IN) $(EXTLIBS)
87
88rtla.%: fixdep FORCE
89 make -f $(srctree)/tools/build/Makefile.build dir=. $@
90
91$(RTLA_IN): fixdep FORCE src/timerlat.skel.h
92 make $(build)=rtla
93
94clean: doc_clean fixdep-clean
95 $(call QUIET_CLEAN, rtla)
96 $(Q)find . -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete
97 $(Q)rm -f rtla rtla-static fixdep FEATURE-DUMP rtla-*
98 $(Q)rm -rf feature
99 $(Q)rm -f src/timerlat.bpf.o src/timerlat.skel.h
100check: $(RTLA)
101 RTLA=$(RTLA) prove -o -f tests/
102.PHONY: FORCE clean check