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 103