| # Rules for MiG interfaces that want to go into the C library. |
| # Copyright (C) 1991-2016 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, see |
| # <http://www.gnu.org/licenses/>. |
| |
| # 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}' CPP='${CPP} -x c' $(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-targets):,' \ |
| $(sed-remove-objpfx) > $@.new |
| mv -f $@.new $@ |
| .udeps-targets = $@ $(@:.udeps=.ustamp) $(@:.udeps=.uh) $(@:.udeps=.__h) \ |
| $(@:.udeps=_server.c) $(@:.udeps=_server.h) |
| 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. |
| $(patsubst %,$(objpfx)%.uh,$(user-interfaces)): $(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 |
| $(patsubst %,$(objpfx)%.__h,$(user-interfaces)): $(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 |
| |
| $(patsubst %,$(objpfx)%.h,$(user-interfaces)): $(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 |