235 lines
8.4 KiB
Plaintext
235 lines
8.4 KiB
Plaintext
# Rules for MiG interfaces that want to go into the C library.
|
||
# Copyright (C) 1991,92,93,94,95,96,98,99,2001 Free Software Foundation, Inc.
|
||
# This file is part of the GNU C Library.
|
||
|
||
# The GNU C Library is free software; you can redistribute it and/or
|
||
# modify it under the terms of the GNU Lesser General Public
|
||
# License as published by the Free Software Foundation; either
|
||
# version 2.1 of the License, or (at your option) any later version.
|
||
|
||
# The GNU C Library is distributed in the hope that it will be useful,
|
||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
# Lesser General Public License for more details.
|
||
|
||
# You should have received a copy of the GNU Lesser General Public
|
||
# License along with the GNU C Library; if not, write to the Free
|
||
# Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
||
# 02111-1307 USA.
|
||
|
||
# Makefiles may define these variable before including this file:
|
||
# user-interfaces Names of interfaces to put user stubs in for.
|
||
# server-interfaces Names of interfaces to put server stubs in for.
|
||
# interface-library Name of interface library to build and install.
|
||
# This file sets:
|
||
# interface-headers Names of generated interface header files.
|
||
# interface-routines Names of generated interface routines.
|
||
# All user stubs are put in individual files, prefixed with RPC_; header
|
||
# for both __ and non-__ names is put in foo.h. Server interfaces are
|
||
# written to foo_server.c and foo_server.h; the server functions are called
|
||
# _S_rpcname.
|
||
|
||
# Includers can also add to or modify `migdefines' to set MiG flags.
|
||
|
||
all:
|
||
|
||
# Make sure no value comes from the environment, since we append to it.
|
||
# This is done also in ../Rules, but we append to the value before
|
||
# including Rules, which changes the origin.
|
||
ifneq "$(findstring env,$(origin generated))" ""
|
||
generated :=
|
||
endif
|
||
|
||
|
||
include ../Makeconfig
|
||
|
||
# This makefile contains a lot of implicit rules that get optimized
|
||
# away if the target directory does not exist.
|
||
ifndef no_deps
|
||
-include $(objpfx)dummy.mk
|
||
endif
|
||
$(objpfx)dummy.mk:
|
||
$(make-target-directory)
|
||
echo '# Empty' > $@
|
||
|
||
MIGFLAGS = -DMACH_IPC_COMPAT=0 -DSTANDALONE -DTypeCheck=0 \
|
||
$(+includes) $(migdefines) -subrprefix __
|
||
# Putting CC in the enivronment makes the mig wrapper script
|
||
# use the same compiler setup we are using to run cpp.
|
||
MIG := CC='${CC}' $(MIG)
|
||
|
||
.SUFFIXES: .defs # Just to set specified_rule_matched.
|
||
|
||
define nl # This is needed by *.ir.
|
||
|
||
|
||
endef
|
||
ifdef user-interfaces
|
||
*.ir := $(addprefix $(objpfx),$(foreach if,$(user-interfaces),$(if).ir))
|
||
ifndef no_deps
|
||
ifndef inhibit_interface_rules
|
||
-include $(*.ir)
|
||
endif
|
||
endif
|
||
ifneq "$(*.ir)" "$(wildcard $(*.ir))"
|
||
# If any .ir file is missing, we will be unable to make all the deps.
|
||
no_deps=t
|
||
endif
|
||
generated += $(*.ir:$(objpfx)%=%)
|
||
endif
|
||
|
||
|
||
# %.ir defines a variable `%-calls', which lists the RPCs defined by
|
||
# %.defs, and a rule to build $(%-calls:%=RPC_$(%-userprefix)%.c) from
|
||
# %.defs, where $(%-userprefix) is the user prefix given in %.defs. We use
|
||
# the kludgificacious method of defining a pattern rule to build files
|
||
# matching patterns we are pretty damn sure will only match the particular
|
||
# files we have in mind. To be so damn sure, we use the silly names
|
||
# RPC_*.c and the pattern R%C_*.c because using __*.c and _%*.c (or any
|
||
# other useful pattern) causes the rule for `host_info' to also match
|
||
# `xxx_host_info', and analogous lossage.
|
||
#
|
||
# Depend on %.h just so they will be built from %.uh in the
|
||
# makefile-rebuilding run which builds %.ir; otherwise, %.uh is built as an
|
||
# intermediate in order to make %.ir and then removed before re-exec, when
|
||
# %.uh is built all over again to build %.h.
|
||
$(objpfx)%.ir: $(objpfx)%.uh $(objpfx)%.h
|
||
($(AWK) "NF == 4 && (\$$2 == \"Routine\" || \$$2 == \"SimpleRoutine\")\
|
||
{ printf \"$*-calls += %s\\n\", \$$3 }" $< ;\
|
||
echo '$$($*-calls:%=$$(objpfx)R\%C_%.c): $$(objpfx)$*.ustamp ;';\
|
||
) > $@-new
|
||
mv -f $@-new $@
|
||
vpath Machrules ../mach # Find ourselves.
|
||
|
||
ifndef transform-user-stub-output
|
||
transform-user-stub-output = tmp
|
||
define transform-user-stub
|
||
echo "weak_alias (__$$call, $$call)" >> $(objpfx)tmp_$${call}.c;
|
||
endef
|
||
endif
|
||
|
||
|
||
# Generate `#include <NAME.defs>', taking $* for NAME.
|
||
# If $(NAME.defs) is defined use its value in place of `NAME.defs'.
|
||
define include-%.defs
|
||
echo '#include <$(firstword $($*.defs) $*.defs)>'
|
||
endef
|
||
|
||
ifndef no_deps
|
||
# Not an implicit rule so the stamps are never removed as intermediates!
|
||
$(patsubst %,$(objpfx)%.ustamp,$(user-interfaces)): $(objpfx)%.ustamp:
|
||
rm -f $@
|
||
$(include-%.defs) | \
|
||
$(MIG) - /dev/null -prefix __ \
|
||
$(MIGFLAGS) $(user-MIGFLAGS) $(MIGFLAGS-$*) \
|
||
-i $(objpfx)tmp_ \
|
||
-server /dev/null -user /dev/null -header /dev/null
|
||
for call in $($*-calls); do \
|
||
$(transform-user-stub) \
|
||
$(move-if-change) $(objpfx)$(transform-user-stub-output)_$${call}.c \
|
||
$(objpfx)RPC_$${call}.c; \
|
||
done
|
||
touch $@
|
||
-include $(patsubst %,$(objpfx)%.udeps,$(user-interfaces))
|
||
$(patsubst %,$(objpfx)%.udeps,$(user-interfaces)):
|
||
$(objpfx)%.udeps: $(..)mach/Machrules
|
||
$(make-target-directory)
|
||
# We must use $(CFLAGS) to get -O flags that affect #if's in header files.
|
||
$(include-%.defs) | \
|
||
$(CC) $(CFLAGS) $(CPPFLAGS) -M -x c - | \
|
||
sed -e 's,- *:,$@ $(@:.udeps=.ustamp) $(@:.udeps=.uh) $(@:.udeps=.__h)\
|
||
$(@:.udeps=_server.c) $(@:.udeps=_server.h):,' \
|
||
$(sed-remove-objpfx) > $@.new
|
||
mv -f $@.new $@
|
||
endif
|
||
|
||
# Look for the server stub files where they will be written.
|
||
vpath %_server.c $(addprefix $(objpfx),$(sort $(dir $(server-interfaces))))
|
||
|
||
# Build the server stubs in $(objdir).
|
||
$(objpfx)%_server.c $(objpfx)%_server.h:
|
||
$(make-target-directory)
|
||
$(include-%.defs) | \
|
||
$(MIG) - /dev/null -prefix _S_ \
|
||
$(MIGFLAGS) $(server-MIGFLAGS) $(MIGFLAGS-$*) \
|
||
-user /dev/null -header /dev/null \
|
||
-server $(@:.h=.c) -sheader $(@:.c=.h)
|
||
|
||
# To get header files that declare both the straight and __ functions,
|
||
# we generate two files and paste them together.
|
||
$(objpfx)%.uh:; $(mig.uh)
|
||
define mig.uh
|
||
$(make-target-directory)
|
||
$(include-%.defs) | \
|
||
$(MIG) - /dev/null $(MIGFLAGS) $(MIGFLAGS-$*) \
|
||
-header $@ -server /dev/null -user /dev/null
|
||
endef
|
||
$(objpfx)%.__h:; $(mig.__h)
|
||
define mig.__h
|
||
$(make-target-directory)
|
||
$(include-%.defs) | \
|
||
$(MIG) - /dev/null $(MIGFLAGS) $(MIGFLAGS-$*) -prefix __ \
|
||
-header $@ -server /dev/null -user /dev/null
|
||
endef
|
||
|
||
$(objpfx)%.h: $(objpfx)%.__h $(objpfx)%.uh
|
||
# The last line of foo.__h is "#endif _foo_user_".
|
||
# The first two lines of foo.uh are "#ifndef _foo_user_"/"#define _foo_user_".
|
||
(sed -e '$$d' $<; sed -e '1,2d' $(word 2,$^)) > $@-new
|
||
mv -f $@-new $@
|
||
|
||
interface-routines := $(foreach if,$(user-interfaces), \
|
||
$(addprefix RPC_,$($(if)-calls))) \
|
||
$(server-interfaces:%=%_server)
|
||
interface-headers := $(user-interfaces:%=%.h) \
|
||
$(server-interfaces:%=%_server.h)
|
||
|
||
# Remove the generated user stub source and header files,
|
||
# and don't distribute them.
|
||
mach-generated = $(interface-routines:%=%.c) $(interface-headers) \
|
||
$(foreach h,$(user-interfaces),$h.uh $h.__h)
|
||
generated += $(mach-generated)
|
||
|
||
# These are needed to generate the dependencies.
|
||
before-compile += $(interface-headers:%=$(objpfx)%)
|
||
|
||
# Don't let these be intermediate files and get removed.
|
||
$(foreach h,$(interface-headers:%.h=$(objpfx)%),$h.h $h.__h $h.uh) :
|
||
$(interface-routines:%=$(objpfx)%.c) :
|
||
|
||
# Convenient target to generate all the headers.
|
||
.PHONY: interface-headers
|
||
interface-headers: $(interface-headers)
|
||
|
||
# Don't automatically generate dependencies for the sources we generate.
|
||
# There are likely to be a whole lot of them, and we know their
|
||
# dependencies ahead of time anyway because they're boilerplate.
|
||
omit-deps += $(interface-routines)
|
||
|
||
# Choose any single module generated by MiG. We will compute this module's
|
||
# dependencies and then assume all other MiG-generated modules depend on the
|
||
# same headers.
|
||
some-if-rtn := $(firstword $(interface-routines))
|
||
ifdef some-if-rtn
|
||
$(foreach o,$(object-suffixes),$(interfaces-routines:%=%$o)): $(some-if-rtn).d
|
||
generated += $(some-if-rtn).d
|
||
endif
|
||
|
||
# If defined, $(interface-library) is `libNAME'. It is to be a library
|
||
# containing all the MiG-generated functions for the specified interfaces.
|
||
|
||
ifdef interface-library
|
||
|
||
$(interface-library)-routines = $(interface-routines)
|
||
extra-libs += $(interface-library)
|
||
extra-libs-others += $(interface-library)
|
||
|
||
ifeq (yes,$(build-shared))
|
||
interface.so = $(interface-library:=.so)
|
||
|
||
# Depend on libc.so so a DT_NEEDED is generated in the shared objects.
|
||
$(objpfx)$(interface.so): $(common-objpfx)libc.so
|
||
endif
|
||
|
||
endif
|