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# 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 file
tprog-csingle := $(foreach m,$(__tprogs), \
$(if $($(m)-objs),,$(m)))
# C executables linked based on several .o files
tprog-cmulti := $(foreach m,$(__tprogs),\
$(if $($(m)-objs),$(m)))
# Object (.o) files compiled from .c files
tprog-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 files
ifeq ($(KBUILD_EXTMOD),)
ifdef building_out_of_srctree
_tprogc_flags += -I $(objtree)/$(obj)
endif
endif
tprogc_flags = -Wp,-MD,$(depfile) $(_tprogc_flags)
# Create executable from a single .c file
# tprog-csingle -> Executable
quiet_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 -> executable
quiet_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 -> .o
quiet_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)