projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 752677e8 IK |
1 | # SPDX-License-Identifier: GPL-2.0 |
| 2 | # ========================================================================== | |
| 3 | # Building binaries on the host system | |
| 4 | # Binaries are not used during the compilation of the kernel, and intended | |
| 5 | # to be build for target board, target board can be host of course. Added to | |
| 6 | # build binaries to run not on host system. | |
| 7 | # | |
| 8 | # Sample syntax | |
| 9 | # tprogs-y := xsk_example | |
| 10 | # Will compile xsk_example.c and create an executable named xsk_example | |
| 11 | # | |
| 12 | # tprogs-y := xdpsock | |
| 13 | # xdpsock-objs := xdpsock_1.o xdpsock_2.o | |
| 14 | # Will compile xdpsock_1.c and xdpsock_2.c, and then link the executable | |
| 15 | # xdpsock, based on xdpsock_1.o and xdpsock_2.o | |
| 16 | # | |
| 17 | # Derived from scripts/Makefile.host | |
| 18 | # | |
| 19 | __tprogs := $(sort $(tprogs-y)) | |
| 20 | ||
| 21 | # C code | |
| 22 | # Executables compiled from a single .c file | |
| 23 | tprog-csingle := $(foreach m,$(__tprogs), \ | |
| 24 | $(if $($(m)-objs),,$(m))) | |
| 25 | ||
| 26 | # C executables linked based on several .o files | |
| 27 | tprog-cmulti := $(foreach m,$(__tprogs),\ | |
| 28 | $(if $($(m)-objs),$(m))) | |
| 29 | ||
| 30 | # Object (.o) files compiled from .c files | |
| 31 | tprog-cobjs := $(sort $(foreach m,$(__tprogs),$($(m)-objs))) | |
| 32 | ||
| 33 | tprog-csingle := $(addprefix $(obj)/,$(tprog-csingle)) | |
| 34 | tprog-cmulti := $(addprefix $(obj)/,$(tprog-cmulti)) | |
| 35 | tprog-cobjs := $(addprefix $(obj)/,$(tprog-cobjs)) | |
| 36 | ||
| 37 | ##### | |
| 38 | # Handle options to gcc. Support building with separate output directory | |
| 39 | ||
| 40 | _tprogc_flags = $(TPROGS_CFLAGS) \ | |
| 41 | $(TPROGCFLAGS_$(basetarget).o) | |
| 42 | ||
| 43 | # $(objtree)/$(obj) for including generated headers from checkin source files | |
| 44 | ifeq ($(KBUILD_EXTMOD),) | |
| 45 | ifdef building_out_of_srctree | |
| 46 | _tprogc_flags += -I $(objtree)/$(obj) | |
| 47 | endif | |
| 48 | endif | |
| 49 | ||
| 50 | tprogc_flags = -Wp,-MD,$(depfile) $(_tprogc_flags) | |
| 51 | ||
| 52 | # Create executable from a single .c file | |
| 53 | # tprog-csingle -> Executable | |
| 54 | quiet_cmd_tprog-csingle = CC $@ | |
| 55 | cmd_tprog-csingle = $(CC) $(tprogc_flags) $(TPROGS_LDFLAGS) -o $@ $< \ | |
| 56 | $(TPROGS_LDLIBS) $(TPROGLDLIBS_$(@F)) | |
| 57 | $(tprog-csingle): $(obj)/%: $(src)/%.c FORCE | |
| 58 | $(call if_changed_dep,tprog-csingle) | |
| 59 | ||
| 60 | # Link an executable based on list of .o files, all plain c | |
| 61 | # tprog-cmulti -> executable | |
| 62 | quiet_cmd_tprog-cmulti = LD $@ | |
| 63 | cmd_tprog-cmulti = $(CC) $(tprogc_flags) $(TPROGS_LDFLAGS) -o $@ \ | |
| 64 | $(addprefix $(obj)/,$($(@F)-objs)) \ | |
| 65 | $(TPROGS_LDLIBS) $(TPROGLDLIBS_$(@F)) | |
| 66 | $(tprog-cmulti): $(tprog-cobjs) FORCE | |
| 67 | $(call if_changed,tprog-cmulti) | |
| 68 | $(call multi_depend, $(tprog-cmulti), , -objs) | |
| 69 | ||
| 70 | # Create .o file from a single .c file | |
| 71 | # tprog-cobjs -> .o | |
| 72 | quiet_cmd_tprog-cobjs = CC $@ | |
| 73 | cmd_tprog-cobjs = $(CC) $(tprogc_flags) -c -o $@ $< | |
| 74 | $(tprog-cobjs): $(obj)/%.o: $(src)/%.c FORCE | |
| 75 | $(call if_changed_dep,tprog-cobjs) |