ia64/linux-2.6.18-xen.hg

view scripts/Makefile.host @ 893:f994bfe9b93b

linux/blktap2: reduce TLB flush scope

c/s 885 added very coarse TLB flushing. Since these flushes always
follow single page updates, single page flushes (when available) are
sufficient.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
author Keir Fraser <keir.fraser@citrix.com>
date Thu Jun 04 10:32:57 2009 +0100 (2009-06-04)
parents 831230e53067
children
line source
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
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
33 __hostprogs := $(sort $(hostprogs-y) $(hostprogs-m))
35 # hostprogs-y := tools/build may have been specified. Retreive directory
36 host-objdirs := $(foreach f,$(__hostprogs), $(if $(dir $(f)),$(dir $(f))))
37 host-objdirs := $(strip $(sort $(filter-out ./,$(host-objdirs))))
40 # C code
41 # Executables compiled from a single .c file
42 host-csingle := $(foreach m,$(__hostprogs),$(if $($(m)-objs),,$(m)))
44 # C executables linked based on several .o files
45 host-cmulti := $(foreach m,$(__hostprogs),\
46 $(if $($(m)-cxxobjs),,$(if $($(m)-objs),$(m))))
48 # Object (.o) files compiled from .c files
49 host-cobjs := $(sort $(foreach m,$(__hostprogs),$($(m)-objs)))
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)))
56 # C++ Object (.o) files compiled from .cc files
57 host-cxxobjs := $(sort $(foreach m,$(host-cxxmulti),$($(m)-cxxobjs)))
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))
65 #Object (.o) files used by the shared libaries
66 host-cshobjs := $(sort $(foreach m,$(host-cshlib),$($(m:.so=-objs))))
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 host-objdirs := $(addprefix $(obj)/,$(host-objdirs))
78 obj-dirs += $(host-objdirs)
80 #####
81 # Handle options to gcc. Support building with separate output directory
83 _hostc_flags = $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) \
84 $(HOSTCFLAGS_$(basetarget).o)
85 _hostcxx_flags = $(HOSTCXXFLAGS) $(HOST_EXTRACXXFLAGS) \
86 $(HOSTCXXFLAGS_$(basetarget).o)
88 ifeq ($(KBUILD_SRC),)
89 __hostc_flags = $(_hostc_flags)
90 __hostcxx_flags = $(_hostcxx_flags)
91 else
92 __hostc_flags = -I$(obj) $(call flags,_hostc_flags)
93 __hostcxx_flags = -I$(obj) $(call flags,_hostcxx_flags)
94 endif
96 hostc_flags = -Wp,-MD,$(depfile) $(__hostc_flags)
97 hostcxx_flags = -Wp,-MD,$(depfile) $(__hostcxx_flags)
99 #####
100 # Compile programs on the host
102 # Create executable from a single .c file
103 # host-csingle -> Executable
104 quiet_cmd_host-csingle = HOSTCC $@
105 cmd_host-csingle = $(HOSTCC) $(hostc_flags) -o $@ $< \
106 $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
107 $(host-csingle): %: %.c FORCE
108 $(call if_changed_dep,host-csingle)
110 # Link an executable based on list of .o files, all plain c
111 # host-cmulti -> executable
112 quiet_cmd_host-cmulti = HOSTLD $@
113 cmd_host-cmulti = $(HOSTCC) $(HOSTLDFLAGS) -o $@ \
114 $(addprefix $(obj)/,$($(@F)-objs)) \
115 $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
116 $(host-cmulti): %: $(host-cobjs) $(host-cshlib) FORCE
117 $(call if_changed,host-cmulti)
119 # Create .o file from a single .c file
120 # host-cobjs -> .o
121 quiet_cmd_host-cobjs = HOSTCC $@
122 cmd_host-cobjs = $(HOSTCC) $(hostc_flags) -c -o $@ $<
123 $(host-cobjs): %.o: %.c FORCE
124 $(call if_changed_dep,host-cobjs)
126 # Link an executable based on list of .o files, a mixture of .c and .cc
127 # host-cxxmulti -> executable
128 quiet_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): %: $(host-cobjs) $(host-cxxobjs) $(host-cshlib) FORCE
134 $(call if_changed,host-cxxmulti)
136 # Create .o file from a single .cc (C++) file
137 quiet_cmd_host-cxxobjs = HOSTCXX $@
138 cmd_host-cxxobjs = $(HOSTCXX) $(hostcxx_flags) -c -o $@ $<
139 $(host-cxxobjs): %.o: %.cc FORCE
140 $(call if_changed_dep,host-cxxobjs)
142 # Compile .c file, create position independent .o file
143 # host-cshobjs -> .o
144 quiet_cmd_host-cshobjs = HOSTCC -fPIC $@
145 cmd_host-cshobjs = $(HOSTCC) $(hostc_flags) -fPIC -c -o $@ $<
146 $(host-cshobjs): %.o: %.c FORCE
147 $(call if_changed_dep,host-cshobjs)
149 # Link a shared library, based on position independent .o files
150 # *.o -> .so shared library (host-cshlib)
151 quiet_cmd_host-cshlib = HOSTLLD -shared $@
152 cmd_host-cshlib = $(HOSTCC) $(HOSTLDFLAGS) -shared -o $@ \
153 $(addprefix $(obj)/,$($(@F:.so=-objs))) \
154 $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
155 $(host-cshlib): %: $(host-cshobjs) FORCE
156 $(call if_changed,host-cshlib)
158 targets += $(host-csingle) $(host-cmulti) $(host-cobjs)\
159 $(host-cxxmulti) $(host-cxxobjs) $(host-cshlib) $(host-cshobjs)