# SPDX-License-Identifier: GPL-2.0-only define allow-override  $(if $(or $(findstring environment,$(origin $(1))),\            $(findstring command line,$(origin $(1)))),,\    $(eval $(1) = $(2)))endef # Allow setting CC and AR, or setting CROSS_COMPILE as a prefix.$(call allow-override,CC,$(CROSS_COMPILE)gcc)$(call allow-override,AR,$(CROSS_COMPILE)ar)$(call allow-override,STRIP,$(CROSS_COMPILE)strip)$(call allow-override,PKG_CONFIG,pkg-config)$(call allow-override,LD_SO_CONF_PATH,/etc/ld.so.conf.d/)$(call allow-override,LDCONFIG,ldconfig)export CC AR STRIP PKG_CONFIG LD_SO_CONF_PATH LDCONFIG FOPTS		:= -flto=auto -ffat-lto-objects -fexceptions -fstack-protector-strong	\		-fasynchronous-unwind-tables -fstack-clash-protectionWOPTS		:= -O -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2		\		-Wp,-D_GLIBCXX_ASSERTIONS ifeq ($(CC),clang)  FOPTS		:= $(filter-out -flto=auto -ffat-lto-objects, $(FOPTS))  WOPTS		:= $(filter-out -Wno-maybe-uninitialized, $(WOPTS))endif CFLAGS		:= -g -DVERSION=\"$(VERSION)\" $(FOPTS) $(WOPTS) $(CFLAGS)LDFLAGS		:= -ggdb $(LDFLAGS) RM		:= rm -rfLN		:= ln -sINSTALL		:= installMKDIR		:= mkdirSTRIP		:= stripBINDIR		:= /usr/binCTAGS		:= ctagsETAGS		:= ctags -e .PHONY: installinstall: doc_install	@$(MKDIR) -p $(DESTDIR)$(BINDIR)	$(call QUIET_INSTALL,rtla)$(INSTALL) $(RTLA) -m 755 $(DESTDIR)$(BINDIR)	@$(STRIP) $(DESTDIR)$(BINDIR)/rtla	@test ! -f $(DESTDIR)$(BINDIR)/osnoise || $(RM) $(DESTDIR)$(BINDIR)/osnoise	@$(LN) rtla $(DESTDIR)$(BINDIR)/osnoise	@test ! -f $(DESTDIR)$(BINDIR)/hwnoise || $(RM) $(DESTDIR)$(BINDIR)/hwnoise	@$(LN) -s rtla $(DESTDIR)$(BINDIR)/hwnoise	@test ! -f $(DESTDIR)$(BINDIR)/timerlat || $(RM) $(DESTDIR)$(BINDIR)/timerlat	@$(LN) -s rtla $(DESTDIR)$(BINDIR)/timerlat .PHONY: tagstags:	$(CTAGS) -R --extras=+f --c-kinds=+p src .PHONY: TAGSTAGS:	$(ETAGS) -R --extras=+f --c-kinds=+p src .PHONY: tags_cleantags_clean:	$(RM) tags TAGS .PHONY: doc doc_clean doc_installdoc:	$(MAKE) -C $(DOCSRC) doc_clean:	$(MAKE) -C $(DOCSRC) clean doc_install:	$(MAKE) -C $(DOCSRC) install # This section is necessary to make the rtla tarballNAME		:= rtlaDIRS		:= srcFILES		:= Makefile README.txtCEXT		:= bz2TARBALL		:= $(NAME)-$(VERSION).tar.$(CEXT)TAROPTS		:= -cvjf $(TARBALL)SRCTREE		:=	$(or $(BUILD_SRC),$(CURDIR)) tarball: clean	$(RM) $(NAME)-$(VERSION) && $(MKDIR) $(NAME)-$(VERSION)	echo $(VERSION) > $(NAME)-$(VERSION)/VERSION	cp -r $(DIRS) $(FILES) $(NAME)-$(VERSION)	$(MKDIR) $(NAME)-$(VERSION)/Documentation/	cp -rp $(SRCTREE)/../../../Documentation/tools/$(NAME)/* $(NAME)-$(VERSION)/Documentation/	cp Makefile.standalone $(NAME)-$(VERSION)/Makefile	cp Makefile.$(NAME) $(NAME)-$(VERSION)/	tar $(TAROPTS) --exclude='*~' $(NAME)-$(VERSION)	$(RM) $(NAME)-$(VERSION).PHONY: tarball