klibc/scripts/Makefile.host

# ==========================================================================
# Building binaries on the host system
# Binaries are used during the compilation of the kernel, for example
# to preprocess a data file.
#
# Both C and C++ is supported, but preferred language is C for such utilities.
#
# Samle syntax (see Documentation/kbuild/makefile.txt for reference)
# hostprogs-y := bin2hex
# Will compile bin2hex.c and create an executable named bin2hex
#
# hostprogs-y    := lxdialog
# lxdialog-objs := checklist.o lxdialog.o
# Will compile lxdialog.c and checklist.c, and then link the executable
# lxdialog, based on checklist.o and lxdialog.o
#
# hostprogs-y      := qconf
# qconf-cxxobjs   := qconf.o
# qconf-objs      := menu.o
# Will compile qconf as a C++ program, and menu as a C program.
# They are linked as C++ code to the executable qconf

# hostprogs-y := conf
# conf-objs  := conf.o libkconfig.so
# libkconfig-objs := expr.o type.o
# Will create a shared library named libkconfig.so that consist of
# expr.o and type.o (they are both compiled as C code and the object file
# are made as position independent code).
# conf.c is compiled as a c program, and conf.o is linked together with
# libkconfig.so as the executable conf.
# Note: Shared libraries consisting of C++ files are not supported

__hostprogs := $(sort $(hostprogs-y)$(hostprogs-m))

# hostprogs-y := tools/build may have been specified. Retreive directory
obj-dirs += $(foreach f,$(__hostprogs), $(if $(dir $(f)),$(dir $(f))))
obj-dirs := $(strip $(sort $(filter-out ./,$(obj-dirs))))


# C code
# Executables compiled from a single .c file
host-csingle	:= $(foreach m,$(__hostprogs),$(if $($(m)-objs),,$(m)))

# C executables linked based on several .o files
host-cmulti	:= $(foreach m,$(__hostprogs),\
		   $(if $($(m)-cxxobjs),,$(if $($(m)-objs),$(m))))

# Object (.o) files compiled from .c files
host-cobjs	:= $(sort $(foreach m,$(__hostprogs),$($(m)-objs)))

# C++ code
# C++ executables compiled from at least on .cc file
# and zero or more .c files
host-cxxmulti	:= $(foreach m,$(__hostprogs),$(if $($(m)-cxxobjs),$(m)))

# C++ Object (.o) files compiled from .cc files
host-cxxobjs	:= $(sort $(foreach m,$(host-cxxmulti),$($(m)-cxxobjs)))

# Shared libaries (only .c supported)
# Shared libraries (.so) - all .so files referenced in "xxx-objs"
host-cshlib	:= $(sort $(filter %.so, $(host-cobjs)))
# Remove .so files from "xxx-objs"
host-cobjs	:= $(filter-out %.so,$(host-cobjs))

#Object (.o) files used by the shared libaries
host-cshobjs	:= $(sort $(foreach m,$(host-cshlib),$($(m:.so=-objs))))

__hostprogs     := $(addprefix $(obj)/,$(__hostprogs))
host-csingle	:= $(addprefix $(obj)/,$(host-csingle))
host-cmulti	:= $(addprefix $(obj)/,$(host-cmulti))
host-cobjs	:= $(addprefix $(obj)/,$(host-cobjs))
host-cxxmulti	:= $(addprefix $(obj)/,$(host-cxxmulti))
host-cxxobjs	:= $(addprefix $(obj)/,$(host-cxxobjs))
host-cshlib	:= $(addprefix $(obj)/,$(host-cshlib))
host-cshobjs	:= $(addprefix $(obj)/,$(host-cshobjs))
obj-dirs        := $(addprefix $(obj)/,$(obj-dirs))

#####
# Handle options to gcc. Support building with separate output directory

# Prefix -I with $(srctree) if it is not an absolute path
addtree = $(if $(filter-out -I/%,$(1)),$(patsubst -I%,-I$(srctree)/%,$(1))) $(1)
# Find all -I options and call addtree
flags = $(foreach o,$($(1)),$(if $(filter -I%,$(o)),$(call addtree,$(o)),$(o)))

_hostc_flags   = $(HOSTCFLAGS)   $(HOST_EXTRACFLAGS)   $(HOSTCFLAGS_$(*F).o)
_hostcxx_flags = $(HOSTCXXFLAGS) $(HOST_EXTRACXXFLAGS) $(HOSTCXXFLAGS_$(*F).o)

ifeq ($(KBUILD_SRC),)
__hostc_flags	= $(_hostc_flags)
__hostcxx_flags	= $(_hostcxx_flags)
else
__hostc_flags	= -I$(obj) $(call flags,_hostc_flags)
__hostcxx_flags	= -I$(obj) $(call flags,_hostcxx_flags)
endif

hostc_flags    = -Wp,-MD,$(depfile) $(__hostc_flags)
hostcxx_flags  = -Wp,-MD,$(depfile) $(__hostcxx_flags)

#####
# Compile programs on the host

# Create executable from a single .c file
# host-csingle -> Executable
quiet_cmd_host-csingle 	= HOSTCC  $@
      cmd_host-csingle	= $(HOSTCC) $(hostc_flags) -o $@ $< \
	  	$(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
$(host-csingle): %: %.c FORCE
	$(call if_changed_dep,host-csingle)

# Link an executable based on list of .o files, all plain c
# host-cmulti -> executable
quiet_cmd_host-cmulti	= HOSTLD  $@
      cmd_host-cmulti	= $(HOSTCC) $(HOSTLDFLAGS) -o $@ \
			  $(addprefix $(obj)/,$($(@F)-objs)) \
			  $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
$(host-cmulti): %: $(host-cobjs) $(host-cshlib) FORCE
	$(call if_changed,host-cmulti)

# Create .o file from a single .c file
# host-cobjs -> .o
quiet_cmd_host-cobjs	= HOSTCC  $@
      cmd_host-cobjs	= $(HOSTCC) $(hostc_flags) -c -o $@ $<
$(host-cobjs): %.o: %.c FORCE
	$(call if_changed_dep,host-cobjs)

# Link an executable based on list of .o files, a mixture of .c and .cc
# host-cxxmulti -> executable
quiet_cmd_host-cxxmulti	= HOSTLD  $@
      cmd_host-cxxmulti	= $(HOSTCXX) $(HOSTLDFLAGS) -o $@ \
			  $(foreach o,objs cxxobjs,\
			  $(addprefix $(obj)/,$($(@F)-$(o)))) \
			  $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
$(host-cxxmulti): %: $(host-cobjs) $(host-cxxobjs) $(host-cshlib) FORCE
	$(call if_changed,host-cxxmulti)

# Create .o file from a single .cc (C++) file
quiet_cmd_host-cxxobjs	= HOSTCXX $@
      cmd_host-cxxobjs	= $(HOSTCXX) $(hostcxx_flags) -c -o $@ $<
$(host-cxxobjs): %.o: %.cc FORCE
	$(call if_changed_dep,host-cxxobjs)

# Compile .c file, create position independent .o file
# host-cshobjs -> .o
quiet_cmd_host-cshobjs	= HOSTCC  -fPIC $@
      cmd_host-cshobjs	= $(HOSTCC) $(hostc_flags) -fPIC -c -o $@ $<
$(host-cshobjs): %.o: %.c FORCE
	$(call if_changed_dep,host-cshobjs)

# Link a shared library, based on position independent .o files
# *.o -> .so shared library (host-cshlib)
quiet_cmd_host-cshlib	= HOSTLLD -shared $@
      cmd_host-cshlib	= $(HOSTCC) $(HOSTLDFLAGS) -shared -o $@ \
			  $(addprefix $(obj)/,$($(@F:.so=-objs))) \
			  $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
$(host-cshlib): %: $(host-cshobjs) FORCE
	$(call if_changed,host-cshlib)

targets += $(host-csingle)  $(host-cmulti) $(host-cobjs)\
	   $(host-cxxmulti) $(host-cxxobjs) $(host-cshlib) $(host-cshobjs)
1	niro	532	# ==========================================================================
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			# Prefix -I with $(srctree) if it is not an absolute path
82			addtree = $(if $(filter-out -I/%,$(1)),$(patsubst -I%,-I$(srctree)/%,$(1))) $(1)
83			# Find all -I options and call addtree
84			flags = $(foreach o,$($(1)),$(if $(filter -I%,$(o)),$(call addtree,$(o)),$(o)))
85
86			_hostc_flags = $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) $(HOSTCFLAGS_$(*F).o)
87			_hostcxx_flags = $(HOSTCXXFLAGS) $(HOST_EXTRACXXFLAGS) $(HOSTCXXFLAGS_$(*F).o)
88
89			ifeq ($(KBUILD_SRC),)
90			__hostc_flags = $(_hostc_flags)
91			__hostcxx_flags = $(_hostcxx_flags)
92			else
93			__hostc_flags = -I$(obj) $(call flags,_hostc_flags)
94			__hostcxx_flags = -I$(obj) $(call flags,_hostcxx_flags)
95			endif
96
97			hostc_flags = -Wp,-MD,$(depfile) $(__hostc_flags)
98			hostcxx_flags = -Wp,-MD,$(depfile) $(__hostcxx_flags)
99
100			#####
101			# Compile programs on the host
102
103			# Create executable from a single .c file
104			# host-csingle -> Executable
105			quiet_cmd_host-csingle = HOSTCC $@
106			cmd_host-csingle = $(HOSTCC) $(hostc_flags) -o $@ $< \
107			$(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
108			$(host-csingle): %: %.c FORCE
109			$(call if_changed_dep,host-csingle)
110
111			# Link an executable based on list of .o files, all plain c
112			# host-cmulti -> executable
113			quiet_cmd_host-cmulti = HOSTLD $@
114			cmd_host-cmulti = $(HOSTCC) $(HOSTLDFLAGS) -o $@ \
115			$(addprefix $(obj)/,$($(@F)-objs)) \
116			$(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
117			$(host-cmulti): %: $(host-cobjs) $(host-cshlib) FORCE
118			$(call if_changed,host-cmulti)
119
120			# Create .o file from a single .c file
121			# host-cobjs -> .o
122			quiet_cmd_host-cobjs = HOSTCC $@
123			cmd_host-cobjs = $(HOSTCC) $(hostc_flags) -c -o $@ $<
124			$(host-cobjs): %.o: %.c FORCE
125			$(call if_changed_dep,host-cobjs)
126
127			# Link an executable based on list of .o files, a mixture of .c and .cc
128			# host-cxxmulti -> executable
129			quiet_cmd_host-cxxmulti = HOSTLD $@
130			cmd_host-cxxmulti = $(HOSTCXX) $(HOSTLDFLAGS) -o $@ \
131			$(foreach o,objs cxxobjs,\
132			$(addprefix $(obj)/,$($(@F)-$(o)))) \
133			$(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
134			$(host-cxxmulti): %: $(host-cobjs) $(host-cxxobjs) $(host-cshlib) FORCE
135			$(call if_changed,host-cxxmulti)
136
137			# Create .o file from a single .cc (C++) file
138			quiet_cmd_host-cxxobjs = HOSTCXX $@
139			cmd_host-cxxobjs = $(HOSTCXX) $(hostcxx_flags) -c -o $@ $<
140			$(host-cxxobjs): %.o: %.cc FORCE
141			$(call if_changed_dep,host-cxxobjs)
142
143			# Compile .c file, create position independent .o file
144			# host-cshobjs -> .o
145			quiet_cmd_host-cshobjs = HOSTCC -fPIC $@
146			cmd_host-cshobjs = $(HOSTCC) $(hostc_flags) -fPIC -c -o $@ $<
147			$(host-cshobjs): %.o: %.c FORCE
148			$(call if_changed_dep,host-cshobjs)
149
150			# Link a shared library, based on position independent .o files
151			# *.o -> .so shared library (host-cshlib)
152			quiet_cmd_host-cshlib = HOSTLLD -shared $@
153			cmd_host-cshlib = $(HOSTCC) $(HOSTLDFLAGS) -shared -o $@ \
154			$(addprefix $(obj)/,$($(@F:.so=-objs))) \
155			$(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
156			$(host-cshlib): %: $(host-cshobjs) FORCE
157			$(call if_changed,host-cshlib)
158
159			targets += $(host-csingle) $(host-cmulti) $(host-cobjs)\
160			$(host-cxxmulti) $(host-cxxobjs) $(host-cshlib) $(host-cshobjs)