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28f540f4 | 1 | # Rules for MiG interfaces that want to go into the C library. |
8a0746ae | 2 | # Copyright (C) 1991,92,93,94,95,96,98,99,2001 Free Software Foundation, Inc. |
28f540f4 RM |
3 | # This file is part of the GNU C Library. |
4 | ||
5 | # The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
6 | # modify it under the terms of the GNU Lesser General Public |
7 | # License as published by the Free Software Foundation; either | |
8 | # version 2.1 of the License, or (at your option) any later version. | |
28f540f4 RM |
9 | |
10 | # The GNU C Library is distributed in the hope that it will be useful, | |
11 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 13 | # Lesser General Public License for more details. |
28f540f4 | 14 | |
41bdb6e2 AJ |
15 | # You should have received a copy of the GNU Lesser General Public |
16 | # License along with the GNU C Library; if not, write to the Free | |
17 | # Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
18 | # 02111-1307 USA. | |
28f540f4 RM |
19 | |
20 | # Makefiles may define these variable before including this file: | |
21 | # user-interfaces Names of interfaces to put user stubs in for. | |
22 | # server-interfaces Names of interfaces to put server stubs in for. | |
23 | # interface-library Name of interface library to build and install. | |
24 | # This file sets: | |
25 | # interface-headers Names of generated interface header files. | |
26 | # interface-routines Names of generated interface routines. | |
27 | # All user stubs are put in individual files, prefixed with RPC_; header | |
28 | # for both __ and non-__ names is put in foo.h. Server interfaces are | |
29 | # written to foo_server.c and foo_server.h; the server functions are called | |
30 | # _S_rpcname. | |
31 | ||
32 | # Includers can also add to or modify `migdefines' to set MiG flags. | |
33 | ||
34 | all: | |
35 | ||
36 | # Make sure no value comes from the environment, since we append to it. | |
37 | # This is done also in ../Rules, but we append to the value before | |
38 | # including Rules, which changes the origin. | |
39 | ifneq "$(findstring env,$(origin generated))" "" | |
40 | generated := | |
41 | endif | |
42 | ||
43 | ||
44 | include ../Makeconfig | |
45 | ||
37eb58de RM |
46 | # This makefile contains a lot of implicit rules that get optimized |
47 | # away if the target directory does not exist. | |
48 | ifndef no_deps | |
49 | -include $(objpfx)dummy.mk | |
50 | endif | |
51 | $(objpfx)dummy.mk: | |
52 | $(make-target-directory) | |
53 | echo '# Empty' > $@ | |
54 | ||
28f540f4 RM |
55 | MIGFLAGS = -DMACH_IPC_COMPAT=0 -DSTANDALONE -DTypeCheck=0 \ |
56 | $(+includes) $(migdefines) -subrprefix __ | |
8a0746ae RM |
57 | # Putting CC in the enivronment makes the mig wrapper script |
58 | # use the same compiler setup we are using to run cpp. | |
dcb00da6 | 59 | MIG := CC='${CC}' CPP='${CPP}' $(MIG) |
28f540f4 RM |
60 | |
61 | .SUFFIXES: .defs # Just to set specified_rule_matched. | |
62 | ||
63 | define nl # This is needed by *.ir. | |
64 | ||
65 | ||
66 | endef | |
67 | ifdef user-interfaces | |
68 | *.ir := $(addprefix $(objpfx),$(foreach if,$(user-interfaces),$(if).ir)) | |
a1c46301 | 69 | ifndef no_deps |
28f540f4 | 70 | ifndef inhibit_interface_rules |
9e3db9cd | 71 | -include $(*.ir) |
28f540f4 | 72 | endif |
a1c46301 | 73 | endif |
28f540f4 RM |
74 | ifneq "$(*.ir)" "$(wildcard $(*.ir))" |
75 | # If any .ir file is missing, we will be unable to make all the deps. | |
76 | no_deps=t | |
77 | endif | |
78 | generated += $(*.ir:$(objpfx)%=%) | |
79 | endif | |
80 | ||
81 | ||
82 | # %.ir defines a variable `%-calls', which lists the RPCs defined by | |
83 | # %.defs, and a rule to build $(%-calls:%=RPC_$(%-userprefix)%.c) from | |
84 | # %.defs, where $(%-userprefix) is the user prefix given in %.defs. We use | |
85 | # the kludgificacious method of defining a pattern rule to build files | |
86 | # matching patterns we are pretty damn sure will only match the particular | |
87 | # files we have in mind. To be so damn sure, we use the silly names | |
88 | # RPC_*.c and the pattern R%C_*.c because using __*.c and _%*.c (or any | |
89 | # other useful pattern) causes the rule for `host_info' to also match | |
90 | # `xxx_host_info', and analogous lossage. | |
91 | # | |
28f540f4 RM |
92 | # Depend on %.h just so they will be built from %.uh in the |
93 | # makefile-rebuilding run which builds %.ir; otherwise, %.uh is built as an | |
94 | # intermediate in order to make %.ir and then removed before re-exec, when | |
95 | # %.uh is built all over again to build %.h. | |
96 | $(objpfx)%.ir: $(objpfx)%.uh $(objpfx)%.h | |
19cc96bf | 97 | ($(AWK) "NF == 4 && (\$$2 == \"Routine\" || \$$2 == \"SimpleRoutine\")\ |
aa1075ea | 98 | { printf \"$*-calls += %s\\n\", \$$3 }" $< ;\ |
28f540f4 | 99 | echo '$$($*-calls:%=$$(objpfx)R\%C_%.c): $$(objpfx)$*.ustamp ;';\ |
28f540f4 | 100 | ) > $@-new |
a53bad16 | 101 | mv -f $@-new $@ |
28f540f4 RM |
102 | vpath Machrules ../mach # Find ourselves. |
103 | ||
104 | ifndef transform-user-stub-output | |
105 | transform-user-stub-output = tmp | |
106 | define transform-user-stub | |
107 | echo "weak_alias (__$$call, $$call)" >> $(objpfx)tmp_$${call}.c; | |
108 | endef | |
109 | endif | |
110 | ||
aa592a63 RM |
111 | |
112 | # Generate `#include <NAME.defs>', taking $* for NAME. | |
113 | # If $(NAME.defs) is defined use its value in place of `NAME.defs'. | |
114 | define include-%.defs | |
115 | echo '#include <$(firstword $($*.defs) $*.defs)>' | |
116 | endef | |
117 | ||
71cf0361 | 118 | ifndef no_deps |
28f540f4 | 119 | # Not an implicit rule so the stamps are never removed as intermediates! |
aa1075ea RM |
120 | $(patsubst %,$(objpfx)%.ustamp,$(user-interfaces)): $(objpfx)%.ustamp: |
121 | rm -f $@ | |
aa592a63 | 122 | $(include-%.defs) | \ |
aa1075ea RM |
123 | $(MIG) - /dev/null -prefix __ \ |
124 | $(MIGFLAGS) $(user-MIGFLAGS) $(MIGFLAGS-$*) \ | |
125 | -i $(objpfx)tmp_ \ | |
28f540f4 RM |
126 | -server /dev/null -user /dev/null -header /dev/null |
127 | for call in $($*-calls); do \ | |
128 | $(transform-user-stub) \ | |
66715f83 | 129 | $(move-if-change) $(objpfx)$(transform-user-stub-output)_$${call}.c \ |
28f540f4 RM |
130 | $(objpfx)RPC_$${call}.c; \ |
131 | done | |
132 | touch $@ | |
aa1075ea | 133 | -include $(patsubst %,$(objpfx)%.udeps,$(user-interfaces)) |
59dd8641 RM |
134 | $(patsubst %,$(objpfx)%.udeps,$(user-interfaces)): |
135 | $(objpfx)%.udeps: $(..)mach/Machrules | |
f8adc70c | 136 | $(make-target-directory) |
ce944fef | 137 | # We must use $(CFLAGS) to get -O flags that affect #if's in header files. |
c337dc4c | 138 | $(include-%.defs) | \ |
ce944fef | 139 | $(CC) $(CFLAGS) $(CPPFLAGS) -M -x c - | \ |
59dd8641 | 140 | sed -e 's,- *:,$@ $(@:.udeps=.ustamp) $(@:.udeps=.uh) $(@:.udeps=.__h)\ |
aa1075ea RM |
141 | $(@:.udeps=_server.c) $(@:.udeps=_server.h):,' \ |
142 | $(sed-remove-objpfx) > $@.new | |
143 | mv -f $@.new $@ | |
71cf0361 | 144 | endif |
28f540f4 RM |
145 | |
146 | # Look for the server stub files where they will be written. | |
147 | vpath %_server.c $(addprefix $(objpfx),$(sort $(dir $(server-interfaces)))) | |
148 | ||
149 | # Build the server stubs in $(objdir). | |
aa1075ea | 150 | $(objpfx)%_server.c $(objpfx)%_server.h: |
19cc96bf | 151 | $(make-target-directory) |
aa592a63 | 152 | $(include-%.defs) | \ |
aa1075ea RM |
153 | $(MIG) - /dev/null -prefix _S_ \ |
154 | $(MIGFLAGS) $(server-MIGFLAGS) $(MIGFLAGS-$*) \ | |
a1470b6f | 155 | -user /dev/null -header /dev/null \ |
28f540f4 RM |
156 | -server $(@:.h=.c) -sheader $(@:.c=.h) |
157 | ||
158 | # To get header files that declare both the straight and __ functions, | |
159 | # we generate two files and paste them together. | |
59dd8641 | 160 | $(objpfx)%.uh:; $(mig.uh) |
28f540f4 RM |
161 | define mig.uh |
162 | $(make-target-directory) | |
aa592a63 | 163 | $(include-%.defs) | \ |
acf51e02 | 164 | $(MIG) - /dev/null $(MIGFLAGS) $(MIGFLAGS-$*) \ |
28f540f4 RM |
165 | -header $@ -server /dev/null -user /dev/null |
166 | endef | |
59dd8641 | 167 | $(objpfx)%.__h:; $(mig.__h) |
28f540f4 RM |
168 | define mig.__h |
169 | $(make-target-directory) | |
aa592a63 | 170 | $(include-%.defs) | \ |
acf51e02 | 171 | $(MIG) - /dev/null $(MIGFLAGS) $(MIGFLAGS-$*) -prefix __ \ |
28f540f4 RM |
172 | -header $@ -server /dev/null -user /dev/null |
173 | endef | |
174 | ||
175 | $(objpfx)%.h: $(objpfx)%.__h $(objpfx)%.uh | |
176 | # The last line of foo.__h is "#endif _foo_user_". | |
177 | # The first two lines of foo.uh are "#ifndef _foo_user_"/"#define _foo_user_". | |
178 | (sed -e '$$d' $<; sed -e '1,2d' $(word 2,$^)) > $@-new | |
a53bad16 | 179 | mv -f $@-new $@ |
28f540f4 RM |
180 | |
181 | interface-routines := $(foreach if,$(user-interfaces), \ | |
182 | $(addprefix RPC_,$($(if)-calls))) \ | |
183 | $(server-interfaces:%=%_server) | |
184 | interface-headers := $(user-interfaces:%=%.h) \ | |
185 | $(server-interfaces:%=%_server.h) | |
186 | ||
187 | # Remove the generated user stub source and header files, | |
188 | # and don't distribute them. | |
63b129ed RM |
189 | mach-generated = $(interface-routines:%=%.c) $(interface-headers) \ |
190 | $(foreach h,$(user-interfaces),$h.uh $h.__h) | |
28f540f4 RM |
191 | generated += $(mach-generated) |
192 | ||
193 | # These are needed to generate the dependencies. | |
194 | before-compile += $(interface-headers:%=$(objpfx)%) | |
195 | ||
196 | # Don't let these be intermediate files and get removed. | |
197 | $(foreach h,$(interface-headers:%.h=$(objpfx)%),$h.h $h.__h $h.uh) : | |
198 | $(interface-routines:%=$(objpfx)%.c) : | |
199 | ||
200 | # Convenient target to generate all the headers. | |
201 | .PHONY: interface-headers | |
202 | interface-headers: $(interface-headers) | |
203 | ||
204 | # Don't automatically generate dependencies for the sources we generate. | |
205 | # There are likely to be a whole lot of them, and we know their | |
206 | # dependencies ahead of time anyway because they're boilerplate. | |
207 | omit-deps += $(interface-routines) | |
208 | ||
aa1075ea RM |
209 | # Choose any single module generated by MiG. We will compute this module's |
210 | # dependencies and then assume all other MiG-generated modules depend on the | |
211 | # same headers. | |
212 | some-if-rtn := $(firstword $(interface-routines)) | |
213 | ifdef some-if-rtn | |
214 | $(foreach o,$(object-suffixes),$(interfaces-routines:%=%$o)): $(some-if-rtn).d | |
215 | generated += $(some-if-rtn).d | |
216 | endif | |
28f540f4 | 217 | \f |
f0bf9cb9 | 218 | # If defined, $(interface-library) is `libNAME'. It is to be a library |
28f540f4 RM |
219 | # containing all the MiG-generated functions for the specified interfaces. |
220 | ||
221 | ifdef interface-library | |
222 | ||
f0bf9cb9 RM |
223 | $(interface-library)-routines = $(interface-routines) |
224 | extra-libs += $(interface-library) | |
e10cd1dc | 225 | extra-libs-others += $(interface-library) |
28f540f4 | 226 | |
5407f442 RM |
227 | ifeq (yes,$(build-shared)) |
228 | interface.so = $(interface-library:=.so) | |
229 | ||
230 | # Depend on libc.so so a DT_NEEDED is generated in the shared objects. | |
231 | $(objpfx)$(interface.so): $(common-objpfx)libc.so | |
232 | endif | |
11872325 | 233 | |
28f540f4 | 234 | endif |