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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576# 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)