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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 | ||
5f2fb52f | 41 | __hostprogs := $(sort $(hostprogs)) |
24403874 ER |
42 | host-cshlib := $(sort $(hostlibs-y) $(hostlibs-m)) |
43 | host-cxxshlib := $(sort $(hostcxxlibs-y) $(hostcxxlibs-m)) | |
1da177e4 | 44 | |
1da177e4 LT |
45 | # C code |
46 | # Executables compiled from a single .c file | |
edb950c1 MY |
47 | host-csingle := $(foreach m,$(__hostprogs), \ |
48 | $(if $($(m)-objs)$($(m)-cxxobjs),,$(m))) | |
1da177e4 LT |
49 | |
50 | # C executables linked based on several .o files | |
51 | host-cmulti := $(foreach m,$(__hostprogs),\ | |
52 | $(if $($(m)-cxxobjs),,$(if $($(m)-objs),$(m)))) | |
53 | ||
54 | # Object (.o) files compiled from .c files | |
55 | host-cobjs := $(sort $(foreach m,$(__hostprogs),$($(m)-objs))) | |
56 | ||
57 | # C++ code | |
d8d9efe2 | 58 | # C++ executables compiled from at least one .cc file |
1da177e4 LT |
59 | # and zero or more .c files |
60 | host-cxxmulti := $(foreach m,$(__hostprogs),$(if $($(m)-cxxobjs),$(m))) | |
61 | ||
62 | # C++ Object (.o) files compiled from .cc files | |
63 | host-cxxobjs := $(sort $(foreach m,$(host-cxxmulti),$($(m)-cxxobjs))) | |
64 | ||
24403874 ER |
65 | # Object (.o) files used by the shared libaries |
66 | host-cshobjs := $(sort $(foreach m,$(host-cshlib),$($(m:.so=-objs)))) | |
67 | host-cxxshobjs := $(sort $(foreach m,$(host-cxxshlib),$($(m:.so=-objs)))) | |
68 | ||
1da177e4 LT |
69 | host-csingle := $(addprefix $(obj)/,$(host-csingle)) |
70 | host-cmulti := $(addprefix $(obj)/,$(host-cmulti)) | |
71 | host-cobjs := $(addprefix $(obj)/,$(host-cobjs)) | |
72 | host-cxxmulti := $(addprefix $(obj)/,$(host-cxxmulti)) | |
73 | host-cxxobjs := $(addprefix $(obj)/,$(host-cxxobjs)) | |
24403874 ER |
74 | host-cshlib := $(addprefix $(obj)/,$(host-cshlib)) |
75 | host-cxxshlib := $(addprefix $(obj)/,$(host-cxxshlib)) | |
76 | host-cshobjs := $(addprefix $(obj)/,$(host-cshobjs)) | |
77 | host-cxxshobjs := $(addprefix $(obj)/,$(host-cxxshobjs)) | |
1da177e4 LT |
78 | |
79 | ##### | |
80 | # Handle options to gcc. Support building with separate output directory | |
81 | ||
96f14fe7 | 82 | _hostc_flags = $(KBUILD_HOSTCFLAGS) $(HOST_EXTRACFLAGS) \ |
54b8ae66 | 83 | $(HOSTCFLAGS_$(target-stem).o) |
10844aeb | 84 | _hostcxx_flags = $(KBUILD_HOSTCXXFLAGS) $(HOST_EXTRACXXFLAGS) \ |
54b8ae66 | 85 | $(HOSTCXXFLAGS_$(target-stem).o) |
1da177e4 | 86 | |
cdd750bf | 87 | # $(objtree)/$(obj) for including generated headers from checkin source files |
58156ba4 | 88 | ifeq ($(KBUILD_EXTMOD),) |
051f278e | 89 | ifdef building_out_of_srctree |
cdd750bf MY |
90 | _hostc_flags += -I $(objtree)/$(obj) |
91 | _hostcxx_flags += -I $(objtree)/$(obj) | |
1da177e4 | 92 | endif |
58156ba4 | 93 | endif |
1da177e4 | 94 | |
cdd750bf MY |
95 | hostc_flags = -Wp,-MD,$(depfile) $(_hostc_flags) |
96 | hostcxx_flags = -Wp,-MD,$(depfile) $(_hostcxx_flags) | |
1da177e4 LT |
97 | |
98 | ##### | |
99 | # Compile programs on the host | |
100 | ||
101 | # Create executable from a single .c file | |
102 | # host-csingle -> Executable | |
103 | quiet_cmd_host-csingle = HOSTCC $@ | |
b90a3680 | 104 | cmd_host-csingle = $(HOSTCC) $(hostc_flags) $(KBUILD_HOSTLDFLAGS) -o $@ $< \ |
54b8ae66 | 105 | $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem)) |
767e581d | 106 | $(host-csingle): $(obj)/%: $(src)/%.c FORCE |
1da177e4 LT |
107 | $(call if_changed_dep,host-csingle) |
108 | ||
109 | # Link an executable based on list of .o files, all plain c | |
110 | # host-cmulti -> executable | |
111 | quiet_cmd_host-cmulti = HOSTLD $@ | |
b90a3680 | 112 | cmd_host-cmulti = $(HOSTCC) $(KBUILD_HOSTLDFLAGS) -o $@ \ |
54b8ae66 MY |
113 | $(addprefix $(obj)/, $($(target-stem)-objs)) \ |
114 | $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem)) | |
97e3226e | 115 | $(host-cmulti): FORCE |
1da177e4 | 116 | $(call if_changed,host-cmulti) |
97e3226e | 117 | $(call multi_depend, $(host-cmulti), , -objs) |
1da177e4 LT |
118 | |
119 | # Create .o file from a single .c file | |
120 | # host-cobjs -> .o | |
121 | quiet_cmd_host-cobjs = HOSTCC $@ | |
122 | cmd_host-cobjs = $(HOSTCC) $(hostc_flags) -c -o $@ $< | |
767e581d | 123 | $(host-cobjs): $(obj)/%.o: $(src)/%.c FORCE |
1da177e4 LT |
124 | $(call if_changed_dep,host-cobjs) |
125 | ||
126 | # Link an executable based on list of .o files, a mixture of .c and .cc | |
127 | # host-cxxmulti -> executable | |
128 | quiet_cmd_host-cxxmulti = HOSTLD $@ | |
b90a3680 | 129 | cmd_host-cxxmulti = $(HOSTCXX) $(KBUILD_HOSTLDFLAGS) -o $@ \ |
1da177e4 | 130 | $(foreach o,objs cxxobjs,\ |
54b8ae66 MY |
131 | $(addprefix $(obj)/, $($(target-stem)-$(o)))) \ |
132 | $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem)) | |
97e3226e | 133 | $(host-cxxmulti): FORCE |
1da177e4 | 134 | $(call if_changed,host-cxxmulti) |
97e3226e | 135 | $(call multi_depend, $(host-cxxmulti), , -objs -cxxobjs) |
1da177e4 LT |
136 | |
137 | # Create .o file from a single .cc (C++) file | |
138 | quiet_cmd_host-cxxobjs = HOSTCXX $@ | |
139 | cmd_host-cxxobjs = $(HOSTCXX) $(hostcxx_flags) -c -o $@ $< | |
767e581d | 140 | $(host-cxxobjs): $(obj)/%.o: $(src)/%.cc FORCE |
1da177e4 LT |
141 | $(call if_changed_dep,host-cxxobjs) |
142 | ||
24403874 ER |
143 | # Compile .c file, create position independent .o file |
144 | # host-cshobjs -> .o | |
145 | quiet_cmd_host-cshobjs = HOSTCC -fPIC $@ | |
146 | cmd_host-cshobjs = $(HOSTCC) $(hostc_flags) -fPIC -c -o $@ $< | |
147 | $(host-cshobjs): $(obj)/%.o: $(src)/%.c FORCE | |
148 | $(call if_changed_dep,host-cshobjs) | |
149 | ||
150 | # Compile .c file, create position independent .o file | |
151 | # Note that plugin capable gcc versions can be either C or C++ based | |
152 | # therefore plugin source files have to be compilable in both C and C++ mode. | |
153 | # This is why a C++ compiler is invoked on a .c file. | |
154 | # host-cxxshobjs -> .o | |
155 | quiet_cmd_host-cxxshobjs = HOSTCXX -fPIC $@ | |
156 | cmd_host-cxxshobjs = $(HOSTCXX) $(hostcxx_flags) -fPIC -c -o $@ $< | |
157 | $(host-cxxshobjs): $(obj)/%.o: $(src)/%.c FORCE | |
158 | $(call if_changed_dep,host-cxxshobjs) | |
159 | ||
160 | # Link a shared library, based on position independent .o files | |
161 | # *.o -> .so shared library (host-cshlib) | |
162 | quiet_cmd_host-cshlib = HOSTLLD -shared $@ | |
b90a3680 | 163 | cmd_host-cshlib = $(HOSTCC) $(KBUILD_HOSTLDFLAGS) -shared -o $@ \ |
54b8ae66 MY |
164 | $(addprefix $(obj)/, $($(target-stem)-objs)) \ |
165 | $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem).so) | |
24403874 ER |
166 | $(host-cshlib): FORCE |
167 | $(call if_changed,host-cshlib) | |
168 | $(call multi_depend, $(host-cshlib), .so, -objs) | |
169 | ||
170 | # Link a shared library, based on position independent .o files | |
171 | # *.o -> .so shared library (host-cxxshlib) | |
172 | quiet_cmd_host-cxxshlib = HOSTLLD -shared $@ | |
b90a3680 | 173 | cmd_host-cxxshlib = $(HOSTCXX) $(KBUILD_HOSTLDFLAGS) -shared -o $@ \ |
54b8ae66 MY |
174 | $(addprefix $(obj)/, $($(target-stem)-objs)) \ |
175 | $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem).so) | |
24403874 ER |
176 | $(host-cxxshlib): FORCE |
177 | $(call if_changed,host-cxxshlib) | |
178 | $(call multi_depend, $(host-cxxshlib), .so, -objs) | |
179 | ||
1da177e4 | 180 | targets += $(host-csingle) $(host-cmulti) $(host-cobjs)\ |
24403874 | 181 | $(host-cxxmulti) $(host-cxxobjs) $(host-cshlib) $(host-cshobjs) $(host-cxxshlib) $(host-cxxshobjs) |