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 := $(shell sh -c "make -sC ../../.. kernelversion | grep -v make") 31DOCSRC := ../../../Documentation/tools/rtla/ 32 33FEATURE_TESTS := libtraceevent 34FEATURE_TESTS += libtracefs 35FEATURE_TESTS += libcpupower 36FEATURE_TESTS += libbpf 37FEATURE_TESTS += clang-bpf-co-re 38FEATURE_TESTS += bpftool-skeletons 39FEATURE_DISPLAY := libtraceevent 40FEATURE_DISPLAY += libtracefs 41FEATURE_DISPLAY += libcpupower 42FEATURE_DISPLAY += libbpf 43FEATURE_DISPLAY += clang-bpf-co-re 44FEATURE_DISPLAY += bpftool-skeletons 45 46ifeq ($(V),1) 47 Q = 48else 49 Q = @ 50endif 51 52all: $(RTLA) 53 54include $(srctree)/tools/build/Makefile.include 55include Makefile.rtla 56 57# check for dependencies only on required targets 58NON_CONFIG_TARGETS := clean install tarball doc doc_clean doc_install 59 60config := 1 61ifdef MAKECMDGOALS 62ifeq ($(filter-out $(NON_CONFIG_TARGETS),$(MAKECMDGOALS)),) 63 config := 0 64endif 65endif 66 67ifeq ($(config),1) 68 include $(srctree)/tools/build/Makefile.feature 69 include Makefile.config 70endif 71 72CFLAGS += $(INCLUDES) $(LIB_INCLUDES) 73 74export CFLAGS OUTPUT srctree 75 76ifeq ($(BUILD_BPF_SKEL),1) 77src/timerlat.bpf.o: src/timerlat.bpf.c 78 $(QUIET_CLANG)$(CLANG) -g -O2 -target bpf -c $(filter %.c,$^) -o $@ 79 80src/timerlat.skel.h: src/timerlat.bpf.o 81 $(QUIET_GENSKEL)$(BPFTOOL) gen skeleton $< > $@ 82else 83src/timerlat.skel.h: 84 $(Q)echo '/* BPF skeleton is disabled */' > src/timerlat.skel.h 85endif 86 87$(RTLA): $(RTLA_IN) 88 $(QUIET_LINK)$(CC) $(LDFLAGS) -o $(RTLA) $(RTLA_IN) $(EXTLIBS) 89 90static: $(RTLA_IN) 91 $(eval LDFLAGS += -static) 92 $(QUIET_LINK)$(CC) -static $(LDFLAGS) -o $(RTLA)-static $(RTLA_IN) $(EXTLIBS) 93 94rtla.%: fixdep FORCE 95 make -f $(srctree)/tools/build/Makefile.build dir=. $@ 96 97$(RTLA_IN): fixdep FORCE src/timerlat.skel.h 98 make $(build)=rtla 99 100clean: doc_clean fixdep-clean 101 $(call QUIET_CLEAN, rtla) 102 $(Q)find . -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete 103 $(Q)rm -f rtla rtla-static fixdep FEATURE-DUMP rtla-* 104 $(Q)rm -rf feature 105 $(Q)rm -f src/timerlat.bpf.o src/timerlat.skel.h 106check: $(RTLA) 107 RTLA=$(RTLA) prove -o -f tests/ 108.PHONY: FORCE clean check 109