Root/
1 | # ========================================================================== |
2 | # Building binaries on the host system |
3 | # Binaries are used during the compilation of the kernel, for example |
4 | # to preprocess a data file. |
5 | # |
6 | # Both C and C++ are supported, but preferred language is C for such utilities. |
7 | # |
8 | # Sample syntax (see Documentation/kbuild/makefiles.txt for reference) |
9 | # hostprogs-y := bin2hex |
10 | # Will compile bin2hex.c and create an executable named bin2hex |
11 | # |
12 | # hostprogs-y := lxdialog |
13 | # lxdialog-objs := checklist.o lxdialog.o |
14 | # Will compile lxdialog.c and checklist.c, and then link the executable |
15 | # lxdialog, based on checklist.o and lxdialog.o |
16 | # |
17 | # hostprogs-y := qconf |
18 | # qconf-cxxobjs := qconf.o |
19 | # qconf-objs := menu.o |
20 | # Will compile qconf as a C++ program, and menu as a C program. |
21 | # They are linked as C++ code to the executable qconf |
22 | |
23 | __hostprogs := $(sort $(hostprogs-y) $(hostprogs-m)) |
24 | |
25 | # C code |
26 | # Executables compiled from a single .c file |
27 | host-csingle := $(foreach m,$(__hostprogs), \ |
28 | $(if $($(m)-objs)$($(m)-cxxobjs),,$(m))) |
29 | |
30 | # C executables linked based on several .o files |
31 | host-cmulti := $(foreach m,$(__hostprogs),\ |
32 | $(if $($(m)-cxxobjs),,$(if $($(m)-objs),$(m)))) |
33 | |
34 | # Object (.o) files compiled from .c files |
35 | host-cobjs := $(sort $(foreach m,$(__hostprogs),$($(m)-objs))) |
36 | |
37 | # C++ code |
38 | # C++ executables compiled from at least one .cc file |
39 | # and zero or more .c files |
40 | host-cxxmulti := $(foreach m,$(__hostprogs),$(if $($(m)-cxxobjs),$(m))) |
41 | |
42 | # C++ Object (.o) files compiled from .cc files |
43 | host-cxxobjs := $(sort $(foreach m,$(host-cxxmulti),$($(m)-cxxobjs))) |
44 | |
45 | # output directory for programs/.o files |
46 | # hostprogs-y := tools/build may have been specified. |
47 | # Retrieve also directory of .o files from prog-objs or prog-cxxobjs notation |
48 | host-objdirs := $(dir $(__hostprogs) $(host-cobjs) $(host-cxxobjs)) |
49 | |
50 | host-objdirs := $(strip $(sort $(filter-out ./,$(host-objdirs)))) |
51 | |
52 | |
53 | __hostprogs := $(addprefix $(obj)/,$(__hostprogs)) |
54 | host-csingle := $(addprefix $(obj)/,$(host-csingle)) |
55 | host-cmulti := $(addprefix $(obj)/,$(host-cmulti)) |
56 | host-cobjs := $(addprefix $(obj)/,$(host-cobjs)) |
57 | host-cxxmulti := $(addprefix $(obj)/,$(host-cxxmulti)) |
58 | host-cxxobjs := $(addprefix $(obj)/,$(host-cxxobjs)) |
59 | host-objdirs := $(addprefix $(obj)/,$(host-objdirs)) |
60 | |
61 | obj-dirs += $(host-objdirs) |
62 | |
63 | ##### |
64 | # Handle options to gcc. Support building with separate output directory |
65 | |
66 | _hostc_flags = $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) \ |
67 | $(HOSTCFLAGS_$(basetarget).o) |
68 | _hostcxx_flags = $(HOSTCXXFLAGS) $(HOST_EXTRACXXFLAGS) \ |
69 | $(HOSTCXXFLAGS_$(basetarget).o) |
70 | |
71 | ifeq ($(KBUILD_SRC),) |
72 | __hostc_flags = $(_hostc_flags) |
73 | __hostcxx_flags = $(_hostcxx_flags) |
74 | else |
75 | __hostc_flags = -I$(obj) $(call flags,_hostc_flags) |
76 | __hostcxx_flags = -I$(obj) $(call flags,_hostcxx_flags) |
77 | endif |
78 | |
79 | hostc_flags = -Wp,-MD,$(depfile) $(__hostc_flags) |
80 | hostcxx_flags = -Wp,-MD,$(depfile) $(__hostcxx_flags) |
81 | |
82 | ##### |
83 | # Compile programs on the host |
84 | |
85 | # Create executable from a single .c file |
86 | # host-csingle -> Executable |
87 | quiet_cmd_host-csingle = HOSTCC $@ |
88 | cmd_host-csingle = $(HOSTCC) $(hostc_flags) -o $@ $< \ |
89 | $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F)) |
90 | $(host-csingle): $(obj)/%: $(src)/%.c FORCE |
91 | $(call if_changed_dep,host-csingle) |
92 | |
93 | # Link an executable based on list of .o files, all plain c |
94 | # host-cmulti -> executable |
95 | quiet_cmd_host-cmulti = HOSTLD $@ |
96 | cmd_host-cmulti = $(HOSTCC) $(HOSTLDFLAGS) -o $@ \ |
97 | $(addprefix $(obj)/,$($(@F)-objs)) \ |
98 | $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F)) |
99 | $(host-cmulti): FORCE |
100 | $(call if_changed,host-cmulti) |
101 | $(call multi_depend, $(host-cmulti), , -objs) |
102 | |
103 | # Create .o file from a single .c file |
104 | # host-cobjs -> .o |
105 | quiet_cmd_host-cobjs = HOSTCC $@ |
106 | cmd_host-cobjs = $(HOSTCC) $(hostc_flags) -c -o $@ $< |
107 | $(host-cobjs): $(obj)/%.o: $(src)/%.c FORCE |
108 | $(call if_changed_dep,host-cobjs) |
109 | |
110 | # Link an executable based on list of .o files, a mixture of .c and .cc |
111 | # host-cxxmulti -> executable |
112 | quiet_cmd_host-cxxmulti = HOSTLD $@ |
113 | cmd_host-cxxmulti = $(HOSTCXX) $(HOSTLDFLAGS) -o $@ \ |
114 | $(foreach o,objs cxxobjs,\ |
115 | $(addprefix $(obj)/,$($(@F)-$(o)))) \ |
116 | $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F)) |
117 | $(host-cxxmulti): FORCE |
118 | $(call if_changed,host-cxxmulti) |
119 | $(call multi_depend, $(host-cxxmulti), , -objs -cxxobjs) |
120 | |
121 | # Create .o file from a single .cc (C++) file |
122 | quiet_cmd_host-cxxobjs = HOSTCXX $@ |
123 | cmd_host-cxxobjs = $(HOSTCXX) $(hostcxx_flags) -c -o $@ $< |
124 | $(host-cxxobjs): $(obj)/%.o: $(src)/%.cc FORCE |
125 | $(call if_changed_dep,host-cxxobjs) |
126 | |
127 | targets += $(host-csingle) $(host-cmulti) $(host-cobjs)\ |
128 | $(host-cxxmulti) $(host-cxxobjs) |
129 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9