1 # SPDX-License-Identifier: GPL-2.0
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
15
16 $(obj)/%.tab.c $(obj)/%.tab.h: $(src)/%.y FORC
17 $(call if_changed,bison)
18
19 # ============================================
20 # Building binaries on the host system
21 # Binaries are used during the compilation of
22 # to preprocess a data file.
23 #
24 # Both C and C++ are supported, but preferred
25 # Rust is also supported, but it may only be u
26 # toolchain is required to be available (e.g.
27 #
28 # Sample syntax (see Documentation/kbuild/make
29 # hostprogs := bin2hex
30 # Will compile bin2hex.c and create an executa
31 #
32 # hostprogs := lxdialog
33 # lxdialog-objs := checklist.o lxdialog.o
34 # Will compile lxdialog.c and checklist.c, and
35 # lxdialog, based on checklist.o and lxdialog.
36 #
37 # hostprogs := qconf
38 # qconf-cxxobjs := qconf.o
39 # qconf-objs := menu.o
40 # Will compile qconf as a C++ program, and men
41 # They are linked as C++ code to the executabl
42 #
43 # hostprogs := target
44 # target-rust := y
45 # Will compile `target` as a Rust program, usi
46 # The crate may consist of several source file
47
48 # C code
49 # Executables compiled from a single .c file
50 host-csingle := $(foreach m,$(hostprogs), \
51 $(if $($(m)-objs)$($(m
52
53 # C executables linked based on several .o fil
54 host-cmulti := $(foreach m,$(hostprogs),\
55 $(if $($(m)-cxxobjs)$($(m)-
56
57 # Object (.o) files compiled from .c files
58 host-cobjs := $(sort $(foreach m,$(hostpr
59
60 # C++ code
61 # C++ executables compiled from at least one .
62 # and zero or more .c files
63 host-cxxmulti := $(foreach m,$(hostprogs),$(
64
65 # C++ Object (.o) files compiled from .cc file
66 host-cxxobjs := $(sort $(foreach m,$(host-c
67
68 # Rust code
69 # Executables compiled from a single Rust crat
70 # one or more .rs files)
71 host-rust := $(foreach m,$(hostprogs),$(
72
73 host-csingle := $(addprefix $(obj)/,$(host-
74 host-cmulti := $(addprefix $(obj)/,$(host-
75 host-cobjs := $(addprefix $(obj)/,$(host-
76 host-cxxmulti := $(addprefix $(obj)/,$(host-
77 host-cxxobjs := $(addprefix $(obj)/,$(host-
78 host-rust := $(addprefix $(obj)/,$(host-
79
80 #####
81 # Handle options to gcc. Support building with
82
83 hostc_flags = -Wp,-MMD,$(depfile) \
84 $(KBUILD_HOSTCFLAGS) $(HOST_E
85 $(HOSTCFLAGS_$(target-stem).o
86 hostcxx_flags = -Wp,-MMD,$(depfile) \
87 $(KBUILD_HOSTCXXFLAGS) $(HOST
88 $(HOSTCXXFLAGS_$(target-stem)
89
90 # `--out-dir` is required to avoid temporaries
91 # current working directory, which may be not
92 # modules case.
93 hostrust_flags = --out-dir $(dir $@) --emit=de
94 -Clinker-flavor=gcc -Clinker=
95 -Clink-args='$(call escsq,$(K
96 $(KBUILD_HOSTRUSTFLAGS) $(HOS
97 $(HOSTRUSTFLAGS_$(target-stem
98
99 # $(objtree)/$(obj) for including generated he
100 ifeq ($(KBUILD_EXTMOD),)
101 ifdef building_out_of_srctree
102 hostc_flags += -I $(objtree)/$(obj)
103 hostcxx_flags += -I $(objtree)/$(obj)
104 endif
105 endif
106
107 #####
108 # Compile programs on the host
109
110 # Create executable from a single .c file
111 # host-csingle -> Executable
112 quiet_cmd_host-csingle = HOSTCC $@
113 cmd_host-csingle = $(HOSTCC) $(hostc_fl
114 $(KBUILD_HOSTLDLIBS) $(HOSTLDL
115 $(host-csingle): $(obj)/%: $(obj)/%.c FORCE
116 $(call if_changed_dep,host-csingle)
117
118 # Link an executable based on list of .o files
119 # host-cmulti -> executable
120 quiet_cmd_host-cmulti = HOSTLD $@
121 cmd_host-cmulti = $(HOSTCC) $(KBUILD_H
122 $(addprefix $(obj)/,
123 $(KBUILD_HOSTLDLIBS)
124 $(host-cmulti): FORCE
125 $(call if_changed,host-cmulti)
126 $(call multi_depend, $(host-cmulti), , -objs)
127
128 # Create .o file from a single .c file
129 # host-cobjs -> .o
130 quiet_cmd_host-cobjs = HOSTCC $@
131 cmd_host-cobjs = $(HOSTCC) $(hostc_fl
132 $(host-cobjs): $(obj)/%.o: $(obj)/%.c FORCE
133 $(call if_changed_dep,host-cobjs)
134
135 # Link an executable based on list of .o files
136 # host-cxxmulti -> executable
137 quiet_cmd_host-cxxmulti = HOSTLD $@
138 cmd_host-cxxmulti = $(HOSTCXX) $(KBUILD_
139 $(foreach o,objs cxx
140 $(addprefix $(obj)/,
141 $(KBUILD_HOSTLDLIBS)
142 $(host-cxxmulti): FORCE
143 $(call if_changed,host-cxxmulti)
144 $(call multi_depend, $(host-cxxmulti), , -objs
145
146 # Create .o file from a single .cc (C++) file
147 quiet_cmd_host-cxxobjs = HOSTCXX $@
148 cmd_host-cxxobjs = $(HOSTCXX) $(hostcxx
149 $(host-cxxobjs): $(obj)/%.o: $(obj)/%.cc FORCE
150 $(call if_changed_dep,host-cxxobjs)
151
152 # Create executable from a single Rust crate (
153 # one or more `.rs` files)
154 # host-rust -> Executable
155 quiet_cmd_host-rust = HOSTRUSTC $@
156 cmd_host-rust = \
157 $(HOSTRUSTC) $(hostrust_flags) --emit=
158 $(host-rust): $(obj)/%: $(src)/%.rs FORCE
159 +$(call if_changed_dep,host-rust)
160
161 targets += $(host-csingle) $(host-cmulti) $(ho
162 $(host-cxxmulti) $(host-cxxobjs) $(
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