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