# SPDX-License-Identifier: GPL-2.0# ==========================================================================# Building binaries on the host system# Binaries are not used during the compilation of the kernel, and intended# to be build for target board, target board can be host of course. Added to# build binaries to run not on host system.## Sample syntax# tprogs-y := xsk_example# Will compile xsk_example.c and create an executable named xsk_example## tprogs-y    := xdpsock# xdpsock-objs := xdpsock_1.o xdpsock_2.o# Will compile xdpsock_1.c and xdpsock_2.c, and then link the executable# xdpsock, based on xdpsock_1.o and xdpsock_2.o## Derived from scripts/Makefile.host#__tprogs := $(sort $(tprogs-y)) # C code# Executables compiled from a single .c filetprog-csingle	:= $(foreach m,$(__tprogs), \			$(if $($(m)-objs),,$(m))) # C executables linked based on several .o filestprog-cmulti	:= $(foreach m,$(__tprogs),\			$(if $($(m)-objs),$(m))) # Object (.o) files compiled from .c filestprog-cobjs	:= $(sort $(foreach m,$(__tprogs),$($(m)-objs))) tprog-csingle	:= $(addprefix $(obj)/,$(tprog-csingle))tprog-cmulti	:= $(addprefix $(obj)/,$(tprog-cmulti))tprog-cobjs	:= $(addprefix $(obj)/,$(tprog-cobjs)) ###### Handle options to gcc. Support building with separate output directory _tprogc_flags   = $(TPROGS_CFLAGS) \                 $(TPROGCFLAGS_$(basetarget).o) # $(objtree)/$(obj) for including generated headers from checkin source filesifeq ($(KBUILD_EXTMOD),)ifdef building_out_of_srctree_tprogc_flags   += -I $(objtree)/$(obj)endifendif tprogc_flags    = -Wp,-MD,$(depfile) $(_tprogc_flags) # Create executable from a single .c file# tprog-csingle -> Executablequiet_cmd_tprog-csingle 	= CC  $@      cmd_tprog-csingle	= $(CC) $(tprogc_flags) $(TPROGS_LDFLAGS) -o $@ $< \		$(TPROGS_LDLIBS) $(TPROGLDLIBS_$(@F))$(tprog-csingle): $(obj)/%: $(src)/%.c FORCE	$(call if_changed_dep,tprog-csingle) # Link an executable based on list of .o files, all plain c# tprog-cmulti -> executablequiet_cmd_tprog-cmulti	= LD  $@      cmd_tprog-cmulti	= $(CC) $(tprogc_flags) $(TPROGS_LDFLAGS) -o $@ \			  $(addprefix $(obj)/,$($(@F)-objs)) \			  $(TPROGS_LDLIBS) $(TPROGLDLIBS_$(@F))$(tprog-cmulti): $(tprog-cobjs) FORCE	$(call if_changed,tprog-cmulti)$(call multi_depend, $(tprog-cmulti), , -objs) # Create .o file from a single .c file# tprog-cobjs -> .oquiet_cmd_tprog-cobjs	= CC  $@      cmd_tprog-cobjs	= $(CC) $(tprogc_flags) -c -o $@ $<$(tprog-cobjs): $(obj)/%.o: $(src)/%.c FORCE	$(call if_changed_dep,tprog-cobjs)