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48209d763c
In preparation for migrating RTLA to libsubcmd, build libsubcmd from the appropriate directory next to the RTLA build proper, and link the resulting object to RTLA. libsubcmd uses str_error_r() and strlcpy() at several places. To support these, also link the respective libraries from tools/lib. For completeness, also add tools/include to include path. This will allow other userspace functions and macros shipped with the kernel to be used in RTLA; perf and bpftool, two other users of libsubcmd, already do that. To prevent a name conflict, rename RTLA's run_command() function to run_tool_command(), and replace RTLA's own container_of implementation with the one in tools/include/linux/container_of.h. Assisted-by: Composer:composer-1 Link: https://lore.kernel.org/r/20260528103254.2990068-2-tglozar@redhat.com Signed-off-by: Tomas Glozar <tglozar@redhat.com>
173 lines
4.9 KiB
Makefile
173 lines
4.9 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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LIBSUBCMD_DIR = $(srctree)/tools/lib/subcmd/
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ifneq ($(OUTPUT),)
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LIBSUBCMD_OUTPUT = $(abspath $(OUTPUT))/libsubcmd
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else
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LIBSUBCMD_OUTPUT = $(CURDIR)/libsubcmd
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endif
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LIBSUBCMD = $(LIBSUBCMD_OUTPUT)/libsubcmd.a
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LIBSUBCMD_INCLUDES = $(LIBSUBCMD_OUTPUT)/include
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LIBSUBCMD_MAKEFLAGS = O=$(LIBSUBCMD_OUTPUT) DESTDIR=$(LIBSUBCMD_OUTPUT) prefix= subdir=
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TOOLS_INCLUDES = -I$(srctree)/tools/include
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ifneq ($(OUTPUT),)
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LIB_OUTPUT = $(abspath $(OUTPUT))/lib
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else
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LIB_OUTPUT = $(CURDIR)/lib
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endif
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LIB_STRING = $(LIB_OUTPUT)/string.o
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LIB_STRING_SRC = $(srctree)/tools/lib/string.c
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LIB_STR_ERROR_R = $(LIB_OUTPUT)/str_error_r.o
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LIB_STR_ERROR_R_SRC = $(srctree)/tools/lib/str_error_r.c
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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_TESTS += libcpupower
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FEATURE_TESTS += libcheck
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FEATURE_TESTS += libbpf
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FEATURE_TESTS += clang-bpf-co-re
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FEATURE_TESTS += bpftool-skeletons
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FEATURE_DISPLAY := libtraceevent
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FEATURE_DISPLAY += libtracefs
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FEATURE_DISPLAY += libcpupower
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FEATURE_DISPLAY += libcheck
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FEATURE_DISPLAY += libbpf
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FEATURE_DISPLAY += clang-bpf-co-re
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FEATURE_DISPLAY += bpftool-skeletons
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all: $(RTLA)
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include $(srctree)/tools/build/Makefile.include
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include Makefile.rtla
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include tests/unit/Makefile.unit
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# check for dependencies only on required targets
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NON_CONFIG_TARGETS := clean install tarball doc doc_clean doc_install
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config := 1
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ifdef MAKECMDGOALS
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ifeq ($(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) $(TOOLS_INCLUDES) -I$(LIBSUBCMD_INCLUDES)
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export CFLAGS OUTPUT srctree
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ifeq ($(BUILD_BPF_SKEL),1)
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src/timerlat.bpf.o: src/timerlat.bpf.c
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$(QUIET_CLANG)$(CLANG) -g -O2 -target bpf -c $(filter %.c,$^) -o $@
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src/timerlat.skel.h: src/timerlat.bpf.o
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$(QUIET_GENSKEL)$(SYSTEM_BPFTOOL) gen skeleton $< > $@
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example/timerlat_bpf_action.o: example/timerlat_bpf_action.c
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$(QUIET_CLANG)$(CLANG) -g -O2 -target bpf -c $(filter %.c,$^) -o $@
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tests/bpf/bpf_action_map.o: tests/bpf/bpf_action_map.c
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$(QUIET_CLANG)$(CLANG) -g -O2 -target bpf -c $(filter %.c,$^) -o $@
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else
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src/timerlat.skel.h:
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$(Q)echo '/* BPF skeleton is disabled */' > src/timerlat.skel.h
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example/timerlat_bpf_action.o: example/timerlat_bpf_action.c
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$(Q)echo "BPF skeleton support is disabled, skipping example/timerlat_bpf_action.o"
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tests/bpf/bpf_action_map.o: tests/bpf/bpf_action_map.c
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$(Q)echo "BPF skeleton support is disabled, skipping tests/bpf/bpf_action_map.o"
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endif
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$(RTLA): $(RTLA_IN) $(LIBSUBCMD) $(LIB_STRING) $(LIB_STR_ERROR_R)
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$(QUIET_LINK)$(CC) $(LDFLAGS) -o $(RTLA) $(RTLA_IN) $(LIBSUBCMD) $(LIB_STRING) $(LIB_STR_ERROR_R) $(EXTLIBS)
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static: $(RTLA_IN) $(LIBSUBCMD) $(LIB_STRING) $(LIB_STR_ERROR_R)
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$(eval LDFLAGS += -static)
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$(QUIET_LINK)$(CC) -static $(LDFLAGS) -o $(RTLA)-static $(RTLA_IN) $(LIBSUBCMD) $(LIB_STRING) $(LIB_STR_ERROR_R) $(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 src/timerlat.skel.h $(LIBSUBCMD_INCLUDES)
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make $(build)=rtla
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$(LIBSUBCMD_OUTPUT):
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$(Q)$(MKDIR) -p $@
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$(LIBSUBCMD_INCLUDES): FORCE | $(LIBSUBCMD_OUTPUT)
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$(Q)$(MAKE) -C $(LIBSUBCMD_DIR) $(LIBSUBCMD_MAKEFLAGS) \
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install_headers
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$(LIBSUBCMD): FORCE | $(LIBSUBCMD_OUTPUT)
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$(Q)$(MAKE) -C $(LIBSUBCMD_DIR) $(LIBSUBCMD_MAKEFLAGS) \
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$@
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$(LIB_OUTPUT):
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$(Q)$(MKDIR) -p $@
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$(LIB_STR_ERROR_R): $(LIB_STR_ERROR_R_SRC) | $(LIB_OUTPUT)
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$(QUIET_CC)$(CC) $(CFLAGS) -c -o $@ $<
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$(LIB_STRING): $(LIB_STRING_SRC) | $(LIB_OUTPUT)
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$(QUIET_CC)$(CC) $(CFLAGS) -c -o $@ $<
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libsubcmd-clean:
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$(call QUIET_CLEAN, libsubcmd)
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$(Q)$(RM) -r -- $(LIBSUBCMD_OUTPUT)
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lib-clean:
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$(call QUIET_CLEAN, lib)
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$(Q)$(RM) -r -- $(LIB_OUTPUT)
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clean: doc_clean fixdep-clean libsubcmd-clean lib-clean
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$(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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$(Q)rm -rf feature
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$(Q)rm -f src/timerlat.bpf.o src/timerlat.skel.h example/timerlat_bpf_action.o
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$(Q)rm -f $(UNIT_TESTS)
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check: $(RTLA) tests/bpf/bpf_action_map.o
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RTLA=$(RTLA) BPFTOOL=$(SYSTEM_BPFTOOL) prove -o -f -v tests/
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examples: example/timerlat_bpf_action.o
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.PHONY: FORCE clean check
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