source: branches/3.2/mindi-busybox/scripts/Makefile.host @ 3232

Last change on this file since 3232 was 2725, checked in by Bruno Cornec, 9 years ago
  • Update mindi-busybox to 1.18.3 to avoid problems with the tar command which is now failing on recent versions with busybox 1.7.3
File size: 5.8 KB
Line 
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
36obj-dirs += $(foreach f,$(__hostprogs), $(if $(dir $(f)),$(dir $(f))))
37obj-dirs := $(strip $(sort $(filter-out ./,$(obj-dirs))))
38
39
40# C code
41# Executables compiled from a single .c file
42host-csingle    := $(foreach m,$(__hostprogs),$(if $($(m)-objs),,$(m)))
43
44# C executables linked based on several .o files
45host-cmulti := $(foreach m,$(__hostprogs),\
46           $(if $($(m)-cxxobjs),,$(if $($(m)-objs),$(m))))
47
48# Object (.o) files compiled from .c files
49host-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
54host-cxxmulti   := $(foreach m,$(__hostprogs),$(if $($(m)-cxxobjs),$(m)))
55
56# C++ Object (.o) files compiled from .cc files
57host-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"
61host-cshlib := $(sort $(filter %.so, $(host-cobjs)))
62# Remove .so files from "xxx-objs"
63host-cobjs  := $(filter-out %.so,$(host-cobjs))
64
65#Object (.o) files used by the shared libaries
66host-cshobjs    := $(sort $(foreach m,$(host-cshlib),$($(m:.so=-objs))))
67
68__hostprogs     := $(addprefix $(obj)/,$(__hostprogs))
69host-csingle    := $(addprefix $(obj)/,$(host-csingle))
70host-cmulti := $(addprefix $(obj)/,$(host-cmulti))
71host-cobjs  := $(addprefix $(obj)/,$(host-cobjs))
72host-cxxmulti   := $(addprefix $(obj)/,$(host-cxxmulti))
73host-cxxobjs    := $(addprefix $(obj)/,$(host-cxxobjs))
74host-cshlib := $(addprefix $(obj)/,$(host-cshlib))
75host-cshobjs    := $(addprefix $(obj)/,$(host-cshobjs))
76obj-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
84ifeq ($(KBUILD_SRC),)
85__hostc_flags   = $(_hostc_flags)
86__hostcxx_flags = $(_hostcxx_flags)
87else
88__hostc_flags   = -I$(obj) $(call flags,_hostc_flags)
89__hostcxx_flags = -I$(obj) $(call flags,_hostcxx_flags)
90endif
91
92hostc_flags    = -Wp,-MD,$(depfile) $(__hostc_flags)
93hostcxx_flags  = -Wp,-MD,$(depfile) $(__hostcxx_flags)
94
95#####
96# Compile programs on the host
97
98# Create executable from a single .c file
99# host-csingle -> Executable
100quiet_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
108quiet_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
117quiet_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
124quiet_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
133quiet_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
140quiet_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)
147quiet_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
154targets += $(host-csingle)  $(host-cmulti) $(host-cobjs)\
155       $(host-cxxmulti) $(host-cxxobjs) $(host-cshlib) $(host-cshobjs)
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