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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 | 42 | host-cxxshlib := $(sort $(hostcxxlibs-y) $(hostcxxlibs-m)) |
1da177e4 | 43 | |
1da177e4 LT |
44 | # C code |
45 | # Executables compiled from a single .c file | |
edb950c1 MY |
46 | host-csingle := $(foreach m,$(__hostprogs), \ |
47 | $(if $($(m)-objs)$($(m)-cxxobjs),,$(m))) | |
1da177e4 LT |
48 | |
49 | # C executables linked based on several .o files | |
50 | host-cmulti := $(foreach m,$(__hostprogs),\ | |
51 | $(if $($(m)-cxxobjs),,$(if $($(m)-objs),$(m)))) | |
52 | ||
53 | # Object (.o) files compiled from .c files | |
54 | host-cobjs := $(sort $(foreach m,$(__hostprogs),$($(m)-objs))) | |
55 | ||
56 | # C++ code | |
d8d9efe2 | 57 | # C++ executables compiled from at least one .cc file |
1da177e4 LT |
58 | # and zero or more .c files |
59 | host-cxxmulti := $(foreach m,$(__hostprogs),$(if $($(m)-cxxobjs),$(m))) | |
60 | ||
61 | # C++ Object (.o) files compiled from .cc files | |
62 | host-cxxobjs := $(sort $(foreach m,$(host-cxxmulti),$($(m)-cxxobjs))) | |
63 | ||
24403874 | 64 | # Object (.o) files used by the shared libaries |
24403874 ER |
65 | host-cxxshobjs := $(sort $(foreach m,$(host-cxxshlib),$($(m:.so=-objs)))) |
66 | ||
1da177e4 LT |
67 | host-csingle := $(addprefix $(obj)/,$(host-csingle)) |
68 | host-cmulti := $(addprefix $(obj)/,$(host-cmulti)) | |
69 | host-cobjs := $(addprefix $(obj)/,$(host-cobjs)) | |
70 | host-cxxmulti := $(addprefix $(obj)/,$(host-cxxmulti)) | |
71 | host-cxxobjs := $(addprefix $(obj)/,$(host-cxxobjs)) | |
24403874 | 72 | host-cxxshlib := $(addprefix $(obj)/,$(host-cxxshlib)) |
24403874 | 73 | host-cxxshobjs := $(addprefix $(obj)/,$(host-cxxshobjs)) |
1da177e4 LT |
74 | |
75 | ##### | |
76 | # Handle options to gcc. Support building with separate output directory | |
77 | ||
96f14fe7 | 78 | _hostc_flags = $(KBUILD_HOSTCFLAGS) $(HOST_EXTRACFLAGS) \ |
54b8ae66 | 79 | $(HOSTCFLAGS_$(target-stem).o) |
10844aeb | 80 | _hostcxx_flags = $(KBUILD_HOSTCXXFLAGS) $(HOST_EXTRACXXFLAGS) \ |
54b8ae66 | 81 | $(HOSTCXXFLAGS_$(target-stem).o) |
1da177e4 | 82 | |
cdd750bf | 83 | # $(objtree)/$(obj) for including generated headers from checkin source files |
58156ba4 | 84 | ifeq ($(KBUILD_EXTMOD),) |
051f278e | 85 | ifdef building_out_of_srctree |
cdd750bf MY |
86 | _hostc_flags += -I $(objtree)/$(obj) |
87 | _hostcxx_flags += -I $(objtree)/$(obj) | |
1da177e4 | 88 | endif |
58156ba4 | 89 | endif |
1da177e4 | 90 | |
cdd750bf MY |
91 | hostc_flags = -Wp,-MD,$(depfile) $(_hostc_flags) |
92 | hostcxx_flags = -Wp,-MD,$(depfile) $(_hostcxx_flags) | |
1da177e4 LT |
93 | |
94 | ##### | |
95 | # Compile programs on the host | |
96 | ||
97 | # Create executable from a single .c file | |
98 | # host-csingle -> Executable | |
99 | quiet_cmd_host-csingle = HOSTCC $@ | |
b90a3680 | 100 | cmd_host-csingle = $(HOSTCC) $(hostc_flags) $(KBUILD_HOSTLDFLAGS) -o $@ $< \ |
54b8ae66 | 101 | $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem)) |
767e581d | 102 | $(host-csingle): $(obj)/%: $(src)/%.c FORCE |
1da177e4 LT |
103 | $(call if_changed_dep,host-csingle) |
104 | ||
105 | # Link an executable based on list of .o files, all plain c | |
106 | # host-cmulti -> executable | |
107 | quiet_cmd_host-cmulti = HOSTLD $@ | |
b90a3680 | 108 | cmd_host-cmulti = $(HOSTCC) $(KBUILD_HOSTLDFLAGS) -o $@ \ |
54b8ae66 MY |
109 | $(addprefix $(obj)/, $($(target-stem)-objs)) \ |
110 | $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem)) | |
97e3226e | 111 | $(host-cmulti): FORCE |
1da177e4 | 112 | $(call if_changed,host-cmulti) |
97e3226e | 113 | $(call multi_depend, $(host-cmulti), , -objs) |
1da177e4 LT |
114 | |
115 | # Create .o file from a single .c file | |
116 | # host-cobjs -> .o | |
117 | quiet_cmd_host-cobjs = HOSTCC $@ | |
118 | cmd_host-cobjs = $(HOSTCC) $(hostc_flags) -c -o $@ $< | |
767e581d | 119 | $(host-cobjs): $(obj)/%.o: $(src)/%.c FORCE |
1da177e4 LT |
120 | $(call if_changed_dep,host-cobjs) |
121 | ||
122 | # Link an executable based on list of .o files, a mixture of .c and .cc | |
123 | # host-cxxmulti -> executable | |
124 | quiet_cmd_host-cxxmulti = HOSTLD $@ | |
b90a3680 | 125 | cmd_host-cxxmulti = $(HOSTCXX) $(KBUILD_HOSTLDFLAGS) -o $@ \ |
1da177e4 | 126 | $(foreach o,objs cxxobjs,\ |
54b8ae66 MY |
127 | $(addprefix $(obj)/, $($(target-stem)-$(o)))) \ |
128 | $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem)) | |
97e3226e | 129 | $(host-cxxmulti): FORCE |
1da177e4 | 130 | $(call if_changed,host-cxxmulti) |
97e3226e | 131 | $(call multi_depend, $(host-cxxmulti), , -objs -cxxobjs) |
1da177e4 LT |
132 | |
133 | # Create .o file from a single .cc (C++) file | |
134 | quiet_cmd_host-cxxobjs = HOSTCXX $@ | |
135 | cmd_host-cxxobjs = $(HOSTCXX) $(hostcxx_flags) -c -o $@ $< | |
767e581d | 136 | $(host-cxxobjs): $(obj)/%.o: $(src)/%.cc FORCE |
1da177e4 LT |
137 | $(call if_changed_dep,host-cxxobjs) |
138 | ||
24403874 ER |
139 | # Compile .c file, create position independent .o file |
140 | # Note that plugin capable gcc versions can be either C or C++ based | |
141 | # therefore plugin source files have to be compilable in both C and C++ mode. | |
142 | # This is why a C++ compiler is invoked on a .c file. | |
143 | # host-cxxshobjs -> .o | |
144 | quiet_cmd_host-cxxshobjs = HOSTCXX -fPIC $@ | |
145 | cmd_host-cxxshobjs = $(HOSTCXX) $(hostcxx_flags) -fPIC -c -o $@ $< | |
146 | $(host-cxxshobjs): $(obj)/%.o: $(src)/%.c FORCE | |
147 | $(call if_changed_dep,host-cxxshobjs) | |
148 | ||
24403874 ER |
149 | # Link a shared library, based on position independent .o files |
150 | # *.o -> .so shared library (host-cxxshlib) | |
151 | quiet_cmd_host-cxxshlib = HOSTLLD -shared $@ | |
b90a3680 | 152 | cmd_host-cxxshlib = $(HOSTCXX) $(KBUILD_HOSTLDFLAGS) -shared -o $@ \ |
54b8ae66 MY |
153 | $(addprefix $(obj)/, $($(target-stem)-objs)) \ |
154 | $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem).so) | |
24403874 ER |
155 | $(host-cxxshlib): FORCE |
156 | $(call if_changed,host-cxxshlib) | |
157 | $(call multi_depend, $(host-cxxshlib), .so, -objs) | |
158 | ||
1da177e4 | 159 | targets += $(host-csingle) $(host-cmulti) $(host-cobjs)\ |
77342a02 | 160 | $(host-cxxmulti) $(host-cxxobjs) $(host-cxxshlib) $(host-cxxshobjs) |