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Use tools/build/ makefiles to build rtla, inheriting the benefits of it. For example, having a proper way to handle dependencies. rtla is built using perf infra-structure when building inside the kernel tree. At this point, rtla diverges from perf in two points: Documentation and tarball generation/build. At the documentation level, rtla is one step ahead, placing the documentation at Documentation/tools/rtla/, using the same build tools as kernel documentation. The idea is to move perf documentation to the same scheme and then share the same makefiles. rtla has a tarball target that the (old) RHEL8 uses. The tarball was kept using a simple standalone makefile for compatibility. The standalone makefile shares most of the code, e.g., flags, with regular buildings. The tarball method was set as deprecated. If necessary, we can make a rtla tarball like perf, which includes the entire tools/build. But this would also require changes in the user side (the directory structure changes, and probably the deps to build the package). Inspired on perf and objtool. Link: https://lkml.kernel.org/r/57563abf2715d22515c0c54a87cff3849eca5d52.1710519524.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>
87 lines
1.9 KiB
Makefile
87 lines
1.9 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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RTLA := $(OUTPUT)rtla
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RTLA_IN := $(RTLA)-in.o
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VERSION := $(shell sh -c "make -sC ../../.. kernelversion | grep -v make")
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DOCSRC := ../../../Documentation/tools/rtla/
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FEATURE_TESTS := libtraceevent
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FEATURE_TESTS += libtracefs
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FEATURE_DISPLAY := libtraceevent
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FEATURE_DISPLAY += libtracefs
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ifeq ($(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: $(RTLA)
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include $(srctree)/tools/build/Makefile.include
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include Makefile.rtla
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# check for dependencies only on required targets
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NON_CONFIG_TARGETS := clean install tarball doc doc_clean doc_install
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config := 1
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ifdef MAKECMDGOALS
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ifeq ($(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) $(LIB_INCLUDES)
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export CFLAGS OUTPUT srctree
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$(RTLA): $(RTLA_IN)
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$(QUIET_LINK)$(CC) $(LDFLAGS) -o $(RTLA) $(RTLA_IN) $(EXTLIBS)
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static: $(RTLA_IN)
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$(eval LDFLAGS += -static)
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$(QUIET_LINK)$(CC) -static $(LDFLAGS) -o $(RTLA)-static $(RTLA_IN) $(EXTLIBS)
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rtla.%: fixdep FORCE
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make -f $(srctree)/tools/build/Makefile.build dir=. $@
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$(RTLA_IN): fixdep FORCE
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make $(build)=rtla
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clean: doc_clean fixdep-clean
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$(call QUIET_CLEAN, rtla)
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$(Q)find . -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete
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$(Q)rm -f rtla rtla-static fixdep FEATURE-DUMP rtla-*
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$(Q)rm -rf feature
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.PHONY: FORCE clean
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