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/scripts/Makefile.host

http://github.com/mirrors/linux
Unknown | 181 lines | 152 code | 29 blank | 0 comment | 0 complexity | 06f950d83a3784e6a23ea2f6ca0e3dda MD5 | raw file
  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# hostcc-option
 24# Usage: cflags-y += $(call hostcc-option,-march=winchip-c6,-march=i586)
 25
 26hostcc-option = $(call try-run,\
 27	$(HOSTCC) $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) $(1) -c -x c /dev/null -o "$$TMP",$(1),$(2))
 28
 29__hostprogs := $(sort $(hostprogs-y) $(hostprogs-m))
 30host-cshlib := $(sort $(hostlibs-y) $(hostlibs-m))
 31host-cxxshlib := $(sort $(hostcxxlibs-y) $(hostcxxlibs-m))
 32
 33# C code
 34# Executables compiled from a single .c file
 35host-csingle	:= $(foreach m,$(__hostprogs), \
 36			$(if $($(m)-objs)$($(m)-cxxobjs),,$(m)))
 37
 38# C executables linked based on several .o files
 39host-cmulti	:= $(foreach m,$(__hostprogs),\
 40		   $(if $($(m)-cxxobjs),,$(if $($(m)-objs),$(m))))
 41
 42# Object (.o) files compiled from .c files
 43host-cobjs	:= $(sort $(foreach m,$(__hostprogs),$($(m)-objs)))
 44
 45# C++ code
 46# C++ executables compiled from at least one .cc file
 47# and zero or more .c files
 48host-cxxmulti	:= $(foreach m,$(__hostprogs),$(if $($(m)-cxxobjs),$(m)))
 49
 50# C++ Object (.o) files compiled from .cc files
 51host-cxxobjs	:= $(sort $(foreach m,$(host-cxxmulti),$($(m)-cxxobjs)))
 52
 53# Object (.o) files used by the shared libaries
 54host-cshobjs	:= $(sort $(foreach m,$(host-cshlib),$($(m:.so=-objs))))
 55host-cxxshobjs	:= $(sort $(foreach m,$(host-cxxshlib),$($(m:.so=-objs))))
 56
 57# output directory for programs/.o files
 58# hostprogs-y := tools/build may have been specified.
 59# Retrieve also directory of .o files from prog-objs or prog-cxxobjs notation
 60host-objdirs := $(dir $(__hostprogs) $(host-cobjs) $(host-cxxobjs))
 61
 62host-objdirs := $(strip $(sort $(filter-out ./,$(host-objdirs))))
 63
 64
 65__hostprogs     := $(addprefix $(obj)/,$(__hostprogs))
 66host-csingle	:= $(addprefix $(obj)/,$(host-csingle))
 67host-cmulti	:= $(addprefix $(obj)/,$(host-cmulti))
 68host-cobjs	:= $(addprefix $(obj)/,$(host-cobjs))
 69host-cxxmulti	:= $(addprefix $(obj)/,$(host-cxxmulti))
 70host-cxxobjs	:= $(addprefix $(obj)/,$(host-cxxobjs))
 71host-cshlib	:= $(addprefix $(obj)/,$(host-cshlib))
 72host-cxxshlib	:= $(addprefix $(obj)/,$(host-cxxshlib))
 73host-cshobjs	:= $(addprefix $(obj)/,$(host-cshobjs))
 74host-cxxshobjs	:= $(addprefix $(obj)/,$(host-cxxshobjs))
 75host-objdirs    := $(addprefix $(obj)/,$(host-objdirs))
 76
 77obj-dirs += $(host-objdirs)
 78
 79#####
 80# Handle options to gcc. Support building with separate output directory
 81
 82_hostc_flags   = $(HOSTCFLAGS)   $(HOST_EXTRACFLAGS)   \
 83                 $(HOSTCFLAGS_$(basetarget).o)
 84_hostcxx_flags = $(HOSTCXXFLAGS) $(HOST_EXTRACXXFLAGS) \
 85                 $(HOSTCXXFLAGS_$(basetarget).o)
 86
 87ifeq ($(KBUILD_SRC),)
 88__hostc_flags	= $(_hostc_flags)
 89__hostcxx_flags	= $(_hostcxx_flags)
 90else
 91__hostc_flags	= -I$(obj) $(call flags,_hostc_flags)
 92__hostcxx_flags	= -I$(obj) $(call flags,_hostcxx_flags)
 93endif
 94
 95hostc_flags    = -Wp,-MD,$(depfile) $(__hostc_flags)
 96hostcxx_flags  = -Wp,-MD,$(depfile) $(__hostcxx_flags)
 97
 98#####
 99# Compile programs on the host
100
101# Create executable from a single .c file
102# host-csingle -> Executable
103quiet_cmd_host-csingle 	= HOSTCC  $@
104      cmd_host-csingle	= $(HOSTCC) $(hostc_flags) -o $@ $< \
105	  	$(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
106$(host-csingle): $(obj)/%: $(src)/%.c FORCE
107	$(call if_changed_dep,host-csingle)
108
109# Link an executable based on list of .o files, all plain c
110# host-cmulti -> executable
111quiet_cmd_host-cmulti	= HOSTLD  $@
112      cmd_host-cmulti	= $(HOSTCC) $(HOSTLDFLAGS) -o $@ \
113			  $(addprefix $(obj)/,$($(@F)-objs)) \
114			  $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
115$(host-cmulti): FORCE
116	$(call if_changed,host-cmulti)
117$(call multi_depend, $(host-cmulti), , -objs)
118
119# Create .o file from a single .c file
120# host-cobjs -> .o
121quiet_cmd_host-cobjs	= HOSTCC  $@
122      cmd_host-cobjs	= $(HOSTCC) $(hostc_flags) -c -o $@ $<
123$(host-cobjs): $(obj)/%.o: $(src)/%.c FORCE
124	$(call if_changed_dep,host-cobjs)
125
126# Link an executable based on list of .o files, a mixture of .c and .cc
127# host-cxxmulti -> executable
128quiet_cmd_host-cxxmulti	= HOSTLD  $@
129      cmd_host-cxxmulti	= $(HOSTCXX) $(HOSTLDFLAGS) -o $@ \
130			  $(foreach o,objs cxxobjs,\
131			  $(addprefix $(obj)/,$($(@F)-$(o)))) \
132			  $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
133$(host-cxxmulti): FORCE
134	$(call if_changed,host-cxxmulti)
135$(call multi_depend, $(host-cxxmulti), , -objs -cxxobjs)
136
137# Create .o file from a single .cc (C++) file
138quiet_cmd_host-cxxobjs	= HOSTCXX $@
139      cmd_host-cxxobjs	= $(HOSTCXX) $(hostcxx_flags) -c -o $@ $<
140$(host-cxxobjs): $(obj)/%.o: $(src)/%.cc FORCE
141	$(call if_changed_dep,host-cxxobjs)
142
143# Compile .c file, create position independent .o file
144# host-cshobjs -> .o
145quiet_cmd_host-cshobjs	= HOSTCC  -fPIC $@
146      cmd_host-cshobjs	= $(HOSTCC) $(hostc_flags) -fPIC -c -o $@ $<
147$(host-cshobjs): $(obj)/%.o: $(src)/%.c FORCE
148	$(call if_changed_dep,host-cshobjs)
149
150# Compile .c file, create position independent .o file
151# Note that plugin capable gcc versions can be either C or C++ based
152# therefore plugin source files have to be compilable in both C and C++ mode.
153# This is why a C++ compiler is invoked on a .c file.
154# host-cxxshobjs -> .o
155quiet_cmd_host-cxxshobjs	= HOSTCXX -fPIC $@
156      cmd_host-cxxshobjs	= $(HOSTCXX) $(hostcxx_flags) -fPIC -c -o $@ $<
157$(host-cxxshobjs): $(obj)/%.o: $(src)/%.c FORCE
158	$(call if_changed_dep,host-cxxshobjs)
159
160# Link a shared library, based on position independent .o files
161# *.o -> .so shared library (host-cshlib)
162quiet_cmd_host-cshlib	= HOSTLLD -shared $@
163      cmd_host-cshlib	= $(HOSTCC) $(HOSTLDFLAGS) -shared -o $@ \
164			  $(addprefix $(obj)/,$($(@F:.so=-objs))) \
165			  $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
166$(host-cshlib): FORCE
167	$(call if_changed,host-cshlib)
168$(call multi_depend, $(host-cshlib), .so, -objs)
169
170# Link a shared library, based on position independent .o files
171# *.o -> .so shared library (host-cxxshlib)
172quiet_cmd_host-cxxshlib	= HOSTLLD -shared $@
173      cmd_host-cxxshlib	= $(HOSTCXX) $(HOSTLDFLAGS) -shared -o $@ \
174			  $(addprefix $(obj)/,$($(@F:.so=-objs))) \
175			  $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
176$(host-cxxshlib): FORCE
177	$(call if_changed,host-cxxshlib)
178$(call multi_depend, $(host-cxxshlib), .so, -objs)
179
180targets += $(host-csingle)  $(host-cmulti) $(host-cobjs)\
181	   $(host-cxxmulti) $(host-cxxobjs) $(host-cshlib) $(host-cshobjs) $(host-cxxshlib) $(host-cxxshobjs)