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Commit | Line | Data |
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b2441318 | 1 | # SPDX-License-Identifier: GPL-2.0 |
cf8dfd15 MY |
2 | |
3 | # LEX | |
4 | # --------------------------------------------------------------------------- | |
5 | quiet_cmd_flex = LEX $@ | |
6 | cmd_flex = $(LEX) -o$@ -L $< | |
7 | ||
8 | $(obj)/%.lex.c: $(src)/%.l FORCE | |
9 | $(call if_changed,flex) | |
10 | ||
11 | # YACC | |
12 | # --------------------------------------------------------------------------- | |
13 | quiet_cmd_bison = YACC $(basename $@).[ch] | |
14 | cmd_bison = $(YACC) -o $(basename $@).c --defines=$(basename $@).h -t -l $< | |
15 | ||
16 | $(obj)/%.tab.c $(obj)/%.tab.h: $(src)/%.y FORCE | |
17 | $(call if_changed,bison) | |
18 | ||
1da177e4 LT |
19 | # ========================================================================== |
20 | # Building binaries on the host system | |
21 | # Binaries are used during the compilation of the kernel, for example | |
22 | # to preprocess a data file. | |
23 | # | |
3156fd05 | 24 | # Both C and C++ are supported, but preferred language is C for such utilities. |
1da177e4 | 25 | # |
cd238eff | 26 | # Sample syntax (see Documentation/kbuild/makefiles.rst for reference) |
5f2fb52f | 27 | # hostprogs := bin2hex |
1da177e4 LT |
28 | # Will compile bin2hex.c and create an executable named bin2hex |
29 | # | |
5f2fb52f | 30 | # hostprogs := lxdialog |
1da177e4 LT |
31 | # lxdialog-objs := checklist.o lxdialog.o |
32 | # Will compile lxdialog.c and checklist.c, and then link the executable | |
33 | # lxdialog, based on checklist.o and lxdialog.o | |
34 | # | |
5f2fb52f | 35 | # hostprogs := qconf |
1da177e4 LT |
36 | # qconf-cxxobjs := qconf.o |
37 | # qconf-objs := menu.o | |
38 | # Will compile qconf as a C++ program, and menu as a C program. | |
39 | # They are linked as C++ code to the executable qconf | |
40 | ||
1da177e4 LT |
41 | # C code |
42 | # Executables compiled from a single .c file | |
85569d19 | 43 | host-csingle := $(foreach m,$(hostprogs), \ |
edb950c1 | 44 | $(if $($(m)-objs)$($(m)-cxxobjs),,$(m))) |
1da177e4 LT |
45 | |
46 | # C executables linked based on several .o files | |
85569d19 | 47 | host-cmulti := $(foreach m,$(hostprogs),\ |
1da177e4 LT |
48 | $(if $($(m)-cxxobjs),,$(if $($(m)-objs),$(m)))) |
49 | ||
50 | # Object (.o) files compiled from .c files | |
85569d19 | 51 | host-cobjs := $(sort $(foreach m,$(hostprogs),$($(m)-objs))) |
1da177e4 LT |
52 | |
53 | # C++ code | |
d8d9efe2 | 54 | # C++ executables compiled from at least one .cc file |
1da177e4 | 55 | # and zero or more .c files |
85569d19 | 56 | host-cxxmulti := $(foreach m,$(hostprogs),$(if $($(m)-cxxobjs),$(m))) |
1da177e4 LT |
57 | |
58 | # C++ Object (.o) files compiled from .cc files | |
59 | host-cxxobjs := $(sort $(foreach m,$(host-cxxmulti),$($(m)-cxxobjs))) | |
60 | ||
1da177e4 LT |
61 | host-csingle := $(addprefix $(obj)/,$(host-csingle)) |
62 | host-cmulti := $(addprefix $(obj)/,$(host-cmulti)) | |
63 | host-cobjs := $(addprefix $(obj)/,$(host-cobjs)) | |
64 | host-cxxmulti := $(addprefix $(obj)/,$(host-cxxmulti)) | |
65 | host-cxxobjs := $(addprefix $(obj)/,$(host-cxxobjs)) | |
1da177e4 LT |
66 | |
67 | ##### | |
68 | # Handle options to gcc. Support building with separate output directory | |
69 | ||
96f14fe7 | 70 | _hostc_flags = $(KBUILD_HOSTCFLAGS) $(HOST_EXTRACFLAGS) \ |
54b8ae66 | 71 | $(HOSTCFLAGS_$(target-stem).o) |
10844aeb | 72 | _hostcxx_flags = $(KBUILD_HOSTCXXFLAGS) $(HOST_EXTRACXXFLAGS) \ |
54b8ae66 | 73 | $(HOSTCXXFLAGS_$(target-stem).o) |
1da177e4 | 74 | |
cdd750bf | 75 | # $(objtree)/$(obj) for including generated headers from checkin source files |
58156ba4 | 76 | ifeq ($(KBUILD_EXTMOD),) |
051f278e | 77 | ifdef building_out_of_srctree |
cdd750bf MY |
78 | _hostc_flags += -I $(objtree)/$(obj) |
79 | _hostcxx_flags += -I $(objtree)/$(obj) | |
1da177e4 | 80 | endif |
58156ba4 | 81 | endif |
1da177e4 | 82 | |
30a77297 MY |
83 | hostc_flags = -Wp,-MMD,$(depfile) $(_hostc_flags) |
84 | hostcxx_flags = -Wp,-MMD,$(depfile) $(_hostcxx_flags) | |
1da177e4 LT |
85 | |
86 | ##### | |
87 | # Compile programs on the host | |
88 | ||
89 | # Create executable from a single .c file | |
90 | # host-csingle -> Executable | |
91 | quiet_cmd_host-csingle = HOSTCC $@ | |
b90a3680 | 92 | cmd_host-csingle = $(HOSTCC) $(hostc_flags) $(KBUILD_HOSTLDFLAGS) -o $@ $< \ |
54b8ae66 | 93 | $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem)) |
767e581d | 94 | $(host-csingle): $(obj)/%: $(src)/%.c FORCE |
1da177e4 LT |
95 | $(call if_changed_dep,host-csingle) |
96 | ||
97 | # Link an executable based on list of .o files, all plain c | |
98 | # host-cmulti -> executable | |
99 | quiet_cmd_host-cmulti = HOSTLD $@ | |
b90a3680 | 100 | cmd_host-cmulti = $(HOSTCC) $(KBUILD_HOSTLDFLAGS) -o $@ \ |
54b8ae66 MY |
101 | $(addprefix $(obj)/, $($(target-stem)-objs)) \ |
102 | $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem)) | |
97e3226e | 103 | $(host-cmulti): FORCE |
1da177e4 | 104 | $(call if_changed,host-cmulti) |
97e3226e | 105 | $(call multi_depend, $(host-cmulti), , -objs) |
1da177e4 LT |
106 | |
107 | # Create .o file from a single .c file | |
108 | # host-cobjs -> .o | |
109 | quiet_cmd_host-cobjs = HOSTCC $@ | |
110 | cmd_host-cobjs = $(HOSTCC) $(hostc_flags) -c -o $@ $< | |
767e581d | 111 | $(host-cobjs): $(obj)/%.o: $(src)/%.c FORCE |
1da177e4 LT |
112 | $(call if_changed_dep,host-cobjs) |
113 | ||
114 | # Link an executable based on list of .o files, a mixture of .c and .cc | |
115 | # host-cxxmulti -> executable | |
116 | quiet_cmd_host-cxxmulti = HOSTLD $@ | |
b90a3680 | 117 | cmd_host-cxxmulti = $(HOSTCXX) $(KBUILD_HOSTLDFLAGS) -o $@ \ |
1da177e4 | 118 | $(foreach o,objs cxxobjs,\ |
54b8ae66 MY |
119 | $(addprefix $(obj)/, $($(target-stem)-$(o)))) \ |
120 | $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem)) | |
97e3226e | 121 | $(host-cxxmulti): FORCE |
1da177e4 | 122 | $(call if_changed,host-cxxmulti) |
97e3226e | 123 | $(call multi_depend, $(host-cxxmulti), , -objs -cxxobjs) |
1da177e4 LT |
124 | |
125 | # Create .o file from a single .cc (C++) file | |
126 | quiet_cmd_host-cxxobjs = HOSTCXX $@ | |
127 | cmd_host-cxxobjs = $(HOSTCXX) $(hostcxx_flags) -c -o $@ $< | |
767e581d | 128 | $(host-cxxobjs): $(obj)/%.o: $(src)/%.cc FORCE |
1da177e4 LT |
129 | $(call if_changed_dep,host-cxxobjs) |
130 | ||
42640b13 MY |
131 | targets += $(host-csingle) $(host-cmulti) $(host-cobjs) \ |
132 | $(host-cxxmulti) $(host-cxxobjs) |