Contents of /tags/mkinitrd-6_1_9/busybox/scripts/Makefile.host
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Wed Oct 28 00:26:51 2009 UTC (14 years, 11 months ago) by niro
File size: 5921 byte(s)
Wed Oct 28 00:26:51 2009 UTC (14 years, 11 months ago) by niro
File size: 5921 byte(s)
tagged 'mkinitrd-6_1_9'
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++ is supported, but preferred language is C for such utilities. |
7 | # |
8 | # Samle syntax (see Documentation/kbuild/makefile.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-y := conf |
24 | # conf-objs := conf.o libkconfig.so |
25 | # libkconfig-objs := expr.o type.o |
26 | # Will create a shared library named libkconfig.so that consist of |
27 | # expr.o and type.o (they are both compiled as C code and the object file |
28 | # are made as position independent code). |
29 | # conf.c is compiled as a c program, and conf.o is linked together with |
30 | # libkconfig.so as the executable conf. |
31 | # Note: Shared libraries consisting of C++ files are not supported |
32 | |
33 | __hostprogs := $(sort $(hostprogs-y)$(hostprogs-m)) |
34 | |
35 | # hostprogs-y := tools/build may have been specified. Retreive directory |
36 | obj-dirs += $(foreach f,$(__hostprogs), $(if $(dir $(f)),$(dir $(f)))) |
37 | obj-dirs := $(strip $(sort $(filter-out ./,$(obj-dirs)))) |
38 | |
39 | |
40 | # C code |
41 | # Executables compiled from a single .c file |
42 | host-csingle := $(foreach m,$(__hostprogs),$(if $($(m)-objs),,$(m))) |
43 | |
44 | # C executables linked based on several .o files |
45 | host-cmulti := $(foreach m,$(__hostprogs),\ |
46 | $(if $($(m)-cxxobjs),,$(if $($(m)-objs),$(m)))) |
47 | |
48 | # Object (.o) files compiled from .c files |
49 | host-cobjs := $(sort $(foreach m,$(__hostprogs),$($(m)-objs))) |
50 | |
51 | # C++ code |
52 | # C++ executables compiled from at least on .cc file |
53 | # and zero or more .c files |
54 | host-cxxmulti := $(foreach m,$(__hostprogs),$(if $($(m)-cxxobjs),$(m))) |
55 | |
56 | # C++ Object (.o) files compiled from .cc files |
57 | host-cxxobjs := $(sort $(foreach m,$(host-cxxmulti),$($(m)-cxxobjs))) |
58 | |
59 | # Shared libaries (only .c supported) |
60 | # Shared libraries (.so) - all .so files referenced in "xxx-objs" |
61 | host-cshlib := $(sort $(filter %.so, $(host-cobjs))) |
62 | # Remove .so files from "xxx-objs" |
63 | host-cobjs := $(filter-out %.so,$(host-cobjs)) |
64 | |
65 | #Object (.o) files used by the shared libaries |
66 | host-cshobjs := $(sort $(foreach m,$(host-cshlib),$($(m:.so=-objs)))) |
67 | |
68 | __hostprogs := $(addprefix $(obj)/,$(__hostprogs)) |
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)) |
74 | host-cshlib := $(addprefix $(obj)/,$(host-cshlib)) |
75 | host-cshobjs := $(addprefix $(obj)/,$(host-cshobjs)) |
76 | obj-dirs := $(addprefix $(obj)/,$(obj-dirs)) |
77 | |
78 | ##### |
79 | # Handle options to gcc. Support building with separate output directory |
80 | |
81 | _hostc_flags = $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) $(HOSTCFLAGS_$(*F).o) |
82 | _hostcxx_flags = $(HOSTCXXFLAGS) $(HOST_EXTRACXXFLAGS) $(HOSTCXXFLAGS_$(*F).o) |
83 | |
84 | ifeq ($(KBUILD_SRC),) |
85 | __hostc_flags = $(_hostc_flags) |
86 | __hostcxx_flags = $(_hostcxx_flags) |
87 | else |
88 | __hostc_flags = -I$(obj) $(call flags,_hostc_flags) |
89 | __hostcxx_flags = -I$(obj) $(call flags,_hostcxx_flags) |
90 | endif |
91 | |
92 | hostc_flags = -Wp,-MD,$(depfile) $(__hostc_flags) |
93 | hostcxx_flags = -Wp,-MD,$(depfile) $(__hostcxx_flags) |
94 | |
95 | ##### |
96 | # Compile programs on the host |
97 | |
98 | # Create executable from a single .c file |
99 | # host-csingle -> Executable |
100 | quiet_cmd_host-csingle = HOSTCC $@ |
101 | cmd_host-csingle = $(HOSTCC) $(hostc_flags) -o $@ $< \ |
102 | $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F)) |
103 | $(host-csingle): %: %.c FORCE |
104 | $(call if_changed_dep,host-csingle) |
105 | |
106 | # Link an executable based on list of .o files, all plain c |
107 | # host-cmulti -> executable |
108 | quiet_cmd_host-cmulti = HOSTLD $@ |
109 | cmd_host-cmulti = $(HOSTCC) $(HOSTLDFLAGS) -o $@ \ |
110 | $(addprefix $(obj)/,$($(@F)-objs)) \ |
111 | $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F)) |
112 | $(host-cmulti): %: $(host-cobjs) $(host-cshlib) FORCE |
113 | $(call if_changed,host-cmulti) |
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 $@ $< |
119 | $(host-cobjs): %.o: %.c FORCE |
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 $@ |
125 | cmd_host-cxxmulti = $(HOSTCXX) $(HOSTLDFLAGS) -o $@ \ |
126 | $(foreach o,objs cxxobjs,\ |
127 | $(addprefix $(obj)/,$($(@F)-$(o)))) \ |
128 | $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F)) |
129 | $(host-cxxmulti): %: $(host-cobjs) $(host-cxxobjs) $(host-cshlib) FORCE |
130 | $(call if_changed,host-cxxmulti) |
131 | |
132 | # Create .o file from a single .cc (C++) file |
133 | quiet_cmd_host-cxxobjs = HOSTCXX $@ |
134 | cmd_host-cxxobjs = $(HOSTCXX) $(hostcxx_flags) -c -o $@ $< |
135 | $(host-cxxobjs): %.o: %.cc FORCE |
136 | $(call if_changed_dep,host-cxxobjs) |
137 | |
138 | # Compile .c file, create position independent .o file |
139 | # host-cshobjs -> .o |
140 | quiet_cmd_host-cshobjs = HOSTCC -fPIC $@ |
141 | cmd_host-cshobjs = $(HOSTCC) $(hostc_flags) -fPIC -c -o $@ $< |
142 | $(host-cshobjs): %.o: %.c FORCE |
143 | $(call if_changed_dep,host-cshobjs) |
144 | |
145 | # Link a shared library, based on position independent .o files |
146 | # *.o -> .so shared library (host-cshlib) |
147 | quiet_cmd_host-cshlib = HOSTLLD -shared $@ |
148 | cmd_host-cshlib = $(HOSTCC) $(HOSTLDFLAGS) -shared -o $@ \ |
149 | $(addprefix $(obj)/,$($(@F:.so=-objs))) \ |
150 | $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F)) |
151 | $(host-cshlib): %: $(host-cshobjs) FORCE |
152 | $(call if_changed,host-cshlib) |
153 | |
154 | targets += $(host-csingle) $(host-cmulti) $(host-cobjs)\ |
155 | $(host-cxxmulti) $(host-cxxobjs) $(host-cshlib) $(host-cshobjs) |
156 |