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9d56c88e52
Use tools/build/ makefiles to build latency-collector, inheriting
the benefits of it. For example: Before this patch, a missing
tracefs/traceevents headers will result in fail like this:
~/linux/tools/tracing/latency $ make
cc -Wall -Wextra -g -O2 -o latency-collector latency-collector.c -lpthread
latency-collector.c:26:10: fatal error: tracefs.h: No such file or directory
26 | #include <tracefs.h>
| ^~~~~~~~~~~
compilation terminated.
make: *** [Makefile:14: latency-collector] Error 1
Which is not that helpful. After this change it reports:
~/linux/tools/tracing/latency# make
Auto-detecting system features:
... libtraceevent: [ OFF ]
... libtracefs: [ OFF ]
libtraceevent is missing. Please install libtraceevent-dev/libtraceevent-devel
libtracefs is missing. Please install libtracefs-dev/libtracefs-devel
Makefile.config:29: *** Please, check the errors above.. Stop.
This type of output is common across other tools in tools/ like perf
and objtool.
Link: https://lkml.kernel.org/r/872420b0880b11304e4ba144a0086c6478c5b469.1710519524.git.bristot@kernel.org
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: John Kacur <jkacur@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
94 lines
2.1 KiB
Makefile
94 lines
2.1 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0-only
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ifeq ($(srctree),)
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srctree := $(patsubst %/,%,$(dir $(CURDIR)))
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srctree := $(patsubst %/,%,$(dir $(srctree)))
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srctree := $(patsubst %/,%,$(dir $(srctree)))
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endif
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include $(srctree)/tools/scripts/Makefile.include
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# O is an alias for OUTPUT
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OUTPUT := $(O)
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ifeq ($(OUTPUT),)
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OUTPUT := $(CURDIR)
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else
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# subdir is used by the ../Makefile in $(call descend,)
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ifneq ($(subdir),)
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OUTPUT := $(OUTPUT)/$(subdir)
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endif
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endif
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ifneq ($(patsubst %/,,$(lastword $(OUTPUT))),)
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OUTPUT := $(OUTPUT)/
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endif
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LATENCY-COLLECTOR := $(OUTPUT)latency-collector
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LATENCY-COLLECTOR_IN := $(LATENCY-COLLECTOR)-in.o
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export CC := gcc
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export LD := ld
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export AR := ar
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export PKG_CONFIG := pkg-config
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FEATURE_TESTS := libtraceevent
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FEATURE_TESTS += libtracefs
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FEATURE_DISPLAY := libtraceevent
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FEATURE_DISPLAY += libtracefs
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ifeq ($(V),1)
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Q =
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else
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Q = @
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endif
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all: $(LATENCY-COLLECTOR)
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include $(srctree)/tools/build/Makefile.include
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# check for dependencies only on required targets
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NON_CONFIG_TARGETS := clean install
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config := 1
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ifdef MAKECMDGOALS
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ifeq ($(filter-out $(NON_CONFIG_TARGETS),$(MAKECMDGOALS)),)
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config := 0
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endif
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endif
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ifeq ($(config),1)
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include $(srctree)/tools/build/Makefile.feature
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include Makefile.config
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endif
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CFLAGS += $(INCLUDES) $(LIB_INCLUDES)
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export CFLAGS OUTPUT srctree
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$(LATENCY-COLLECTOR): $(LATENCY-COLLECTOR_IN)
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$(QUIET_LINK)$(CC) $(LDFLAGS) -o $(LATENCY-COLLECTOR) $(LATENCY-COLLECTOR_IN) $(EXTLIBS)
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latency-collector.%: fixdep FORCE
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make -f $(srctree)/tools/build/Makefile.build dir=. $@
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$(LATENCY-COLLECTOR_IN): fixdep FORCE
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make $(build)=latency-collector
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INSTALL := install
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MKDIR := mkdir
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STRIP := strip
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BINDIR := /usr/bin
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install:
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@$(MKDIR) -p $(DESTDIR)$(BINDIR)
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$(call QUIET_INSTALL,latency-collector)$(INSTALL) $(LATENCY-COLLECTOR) -m 755 $(DESTDIR)$(BINDIR)
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@$(STRIP) $(DESTDIR)$(BINDIR)/latency-collector
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clean:
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$(call QUIET_CLEAN, latency-collector)
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$(Q)find . -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete
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$(Q)@rm -f latency-collector fixdep FEATURE-DUMP
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$(Q)rm -rf feature
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.PHONY: FORCE clean install
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