# Copyright (C) 1993,94,95,96,97,98,99,2000,2001,2002, 2003, 2004#	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.ifdef in-Makerules# Look for header files in hurd/ under the top-level library source directory.# Look for generated header files where they get created.includes += -I$(..)hurd -I$(common-objpfx)hurd/# We use the style `if (err = call(...))' a lot in the Hurd code,# where we have a lot of functions that return zero or an errno code.+cflags += -Wno-parentheses# Do not use any assembly code from sysdeps/unix (and subdirectories).# This bypasses all the system call stubs and uses any existing posix or# generic C files instead.inhibit-sysdep-asm += unix*inhibit-unix-syscalls = yes# Don't try to generate anything from the installed Unix system and its# libraries.  That is only of use when building for a Unix system, so as to# be compatible with some existing binaries for that system.inhibit-glue = yesifeq (,$(filter mach hurd,$(subdir)))# Subdirectories other than hurd/ might use the generated Hurd headers.# So make sure we get a chance to run in hurd/ to make them before all else.# (But we don't want to do this in mach/, because hurd/ needs some things# there, and we know mach/ doesn't need anything from hurd/.)hurd-objpfx = $(common-objpfx)hurd/# These are all the generated headers that <hurd.h> includes.before-compile += $(patsubst %,$(hurd-objpfx)hurd/%.h,auth io fs process)$(patsubst %,$(hurd-objpfx)hurd/%.%,auth io fs process): \  $(common-objpfx)mach/mach-shortcuts.h	$(MAKE) -C $(..)hurd before-compile no_deps=tendif# Hurd profil.c includes this file, so give a rule to make it.ifeq ($(subdir),gmon)$(common-objpfx)hurd/../mach/RPC_task_get_sampled_pcs.c:	$(MAKE) -C $(..)mach before-compile no_deps=tendif# Generate bits/errno.h from the section of the manual that lists all the errno# codes.errno.texinfo = $(..)manual/errno.texihurd = $(..)sysdeps/mach/hurddefine mach-errno-h($(foreach h,mach/message.h \	     mach/kern_return.h \	     mach/mig_errors.h \	     device/device_types.h,\ echo '#include <$h>';\ ))endef# We use the compiler to generate a list of absolute file names for# the headers we want to search for Mach error codes, listed above (and# incidentally, all other headers those include).-include $(common-objpfx)errnos.d$(common-objpfx)errnos.d: $(mach-errnos-deps)	$(mach-errno-h) | \	$(CC) $(CFLAGS) $(CPPFLAGS) -M -x c - | \	sed $(sed-remove-objpfx) -e 's,- *:,mach-errnos-deps :=,' \	    -e 's, \.\./, $(..),g' > $@t	mv -f $@t $@$(hurd)/bits/errno.h: $(common-objpfx)stamp-errnos ;$(common-objpfx)stamp-errnos: $(hurd)/errnos.awk $(errno.texinfo) \			      $(mach-errnos-deps) $(common-objpfx)errnos.d	$(AWK) -f $^ > $(hurd)/bits/errno.h-tmp# Make it unwritable so noone will edit it by mistake.	-chmod a-w $(hurd)/bits/errno.h-tmp	$(move-if-change) $(hurd)/bits/errno.h-tmp $(hurd)/bits/errno.hifeq ($(with-cvs),yes)	test ! -d $(hurd)/CVS || \	  (cd $(hurd) && cvs commit -m'Regenerated from $^' bits/errno.h)endif	touch $@common-generated += errnos.d stamp-errnos# We install the real libc.a as libcrt.a and as libc.a we install a linker# script which does -( -lcrt -lmachuser -lhurduser -).libc-name = crtifeq (,$(subdir))install-others += $(inst_libdir)/libc.a$(inst_libdir)/libc.a: $(hurd)/libc-ldscript $(+force); $(do-install)ifeq (yes,$(build-profile))install-others += $(inst_libdir)/libc_p.a$(inst_libdir)/libc_p.a: $(hurd)/libc_p-ldscript $(+force); $(do-install)endifendif# Make sure these are used to build the libc.so shared object too.  There# is a circular dependency between each of these shared objects and libc# (many high-level libc functions call stubs, stubs call low-level libc# functions like memcpy and mach_msg).  This works out fine at run time# (all the objects are loaded before resolving their symbols, so these# interdependencies are fine).  But to create the shared objects we must# link them one at a time; since each needs one or both of the others to# produce its DT_NEEDED entries and to assign its undefined symbols the# right symbol versions, we can't do any of them before the others!  To# get around this, we link each lib*user.so shared object twice.  First,# we link an object without reference to libc.so (since we haven't linked# libc.so yet), so it lacks a DT_NEEDED record for the libc soname it# depends on, and its undefined symbol references lack the symbol version# assignments they should have.  We will use this shared object solely to# link libc.so against it; that gives libc.so the proper DT_NEEDED record,# and symbol versions assignments (if the lib*user.so object is using them).# Finally we link a second version of the same lib*user.so shared object,# this time linked normally against libc so it gets a proper DT_NEEDED# record and symbol version set; this one can be installed for run-time use.rpcuserlibs := $(common-objpfx)mach/libmachuser.so \	       $(common-objpfx)hurd/libhurduser.solink-rpcuserlibs := $(rpcuserlibs:%user.so=%user-link.so)$(common-objpfx)libc.so: $(link-rpcuserlibs)rpath-dirs += mach hurd# Make sure the `lib' pass builds the dummy shared objects so# we can link libc against them.ifeq (mach,$(subdir))lib-noranlib: $(common-objpfx)mach/libmachuser-link.soendififeq (hurd,$(subdir))lib-noranlib: $(common-objpfx)hurd/libhurduser-link.soendif$(link-rpcuserlibs): %-link.so: %_pic.a# These shared objects are just for the purpose of linking libc,# so they don't need abi-note.o linked into them.	$(build-shlib-helper) \		-nostdlib -o $@ \		-Wl,-soname=$(*F).so$($(*F).so-version) \		$(build-shlib-objlist)libmachuser-link.so-no-z-defs = yeslibhurduser-link.so-no-z-defs = yes# And get them into the libc.so ldscript.$(inst_libdir)/libc.so: $(rpcuserlibs)# The RPC stubs from these libraries are needed in building the dynamic# linker, too.  It must be self-contained, so we link the needed PIC# objects directly into the shared object.ifeq (elf,$(subdir))$(objpfx)librtld.map: $(rpcuserlibs:.so=_pic.a)CFLAGS-dl-load.c = -DEXTERNAL_MAP_FROM_FDendif# We need these libs to link static programs in the libc source tree, too.ifeq (yes,$(build-static))link-libc-static := -Wl,-\( \		    $(patsubst %,$(common-objpfx)%.a,\			       libc mach/libmachuser hurd/libhurduser) \		    $(static-gnulib) -Wl,-\)elseifeq (yes,$(build-shared))# We can try to link the programs with lib*_pic.a...link-libc-static := $(link-libc) -Wl,-\( \		    $(patsubst %,$(common-objpfx)%_pic.a,\			       libc mach/libmachuser hurd/libhurduser) \		    $(static-gnulib) -Wl,-\)endifendififeq ($(subdir),csu)extra-objs += static-start.o# We need special startup code for statically linked binaries.$(objpfx)crt0.o: $(objpfx)static-start.o $(objpfx)abi-note.o $(objpfx)init.o	$(link-relocatable)endififeq (hurd, $(subdir))sysdep_routines += cthreadsendififeq ($(subdir),sunrpc)sysdep_headers += nfs/nfs.hendifendif	# in-Makerules