sysdeps/mach/hurd/Makefile

   1 # Copyright (C) 1993,94,95,96,97,98,99,2000,2001,2002, 2003, 2004
   2 #       Free Software Foundation, Inc.
   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
   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.
   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
  13 # Lesser General Public License for more details.
  14
  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.
  19
  20 ifdef in-Makerules
  21
  22 # Look for header files in hurd/ under the top-level library source directory.
  23 # Look for generated header files where they get created.
  24 includes += -I$(..)hurd -I$(common-objpfx)hurd/
  25
  26 # We use the style `if (err = call(...))' a lot in the Hurd code,
  27 # where we have a lot of functions that return zero or an errno code.
  28 +cflags += -Wno-parentheses
  29
  30 # Do not use any assembly code from sysdeps/unix (and subdirectories).
  31 # This bypasses all the system call stubs and uses any existing posix or
  32 # generic C files instead.
  33 inhibit-sysdep-asm += unix*
  34 inhibit-unix-syscalls = yes
  35
  36 # Don't try to generate anything from the installed Unix system and its
  37 # libraries.  That is only of use when building for a Unix system, so as to
  38 # be compatible with some existing binaries for that system.
  39 inhibit-glue = yes
  40
  41 ifeq (,$(filter mach hurd,$(subdir)))
  42 # Subdirectories other than hurd/ might use the generated Hurd headers.
  43 # So make sure we get a chance to run in hurd/ to make them before all else.
  44 # (But we don't want to do this in mach/, because hurd/ needs some things
  45 # there, and we know mach/ doesn't need anything from hurd/.)
  46
  47 hurd-objpfx = $(common-objpfx)hurd/
  48
  49 # These are all the generated headers that <hurd.h> includes.
  50 before-compile += $(patsubst %,$(hurd-objpfx)hurd/%.h,auth io fs process)
  51 $(patsubst %,$(hurd-objpfx)hurd/%.%,auth io fs process): \
  52   $(common-objpfx)mach/mach-shortcuts.h
  53         $(MAKE) -C $(..)hurd before-compile no_deps=t
  54 endif
  55
  56 # Hurd profil.c includes this file, so give a rule to make it.
  57 ifeq ($(subdir),gmon)
  58 $(common-objpfx)hurd/../mach/RPC_task_get_sampled_pcs.c:
  59         $(MAKE) -C $(..)mach before-compile no_deps=t
  60 endif
  61
  62 \f
  63 # Generate bits/errno.h from the section of the manual that lists all the errno
  64 # codes.
  65
  66 errno.texinfo = $(..)manual/errno.texi
  67
  68 hurd = $(..)sysdeps/mach/hurd
  69
  70 define mach-errno-h
  71 ($(foreach h,mach/message.h \
  72              mach/kern_return.h \
  73              mach/mig_errors.h \
  74              device/device_types.h,\
  75  echo '#include <$h>';\
  76  ))
  77 endef
  78
  79 # We use the compiler to generate a list of absolute file names for
  80 # the headers we want to search for Mach error codes, listed above (and
  81 # incidentally, all other headers those include).
  82 -include $(common-objpfx)errnos.d
  83 $(common-objpfx)errnos.d: $(mach-errnos-deps)
  84         $(mach-errno-h) | \
  85         $(CC) $(CFLAGS) $(CPPFLAGS) -M -x c - | \
  86         sed $(sed-remove-objpfx) -e 's,- *:,mach-errnos-deps :=,' \
  87             -e 's, \.\./, $(..),g' > $@t
  88         mv -f $@t $@
  89
  90 $(hurd)/bits/errno.h: $(common-objpfx)stamp-errnos ;
  91 $(common-objpfx)stamp-errnos: $(hurd)/errnos.awk $(errno.texinfo) \
  92                               $(mach-errnos-deps) $(common-objpfx)errnos.d
  93         $(AWK) -f $^ > $(hurd)/bits/errno.h-tmp
  94 # Make it unwritable so noone will edit it by mistake.
  95         -chmod a-w $(hurd)/bits/errno.h-tmp
  96         $(move-if-change) $(hurd)/bits/errno.h-tmp $(hurd)/bits/errno.h
  97 ifeq ($(with-cvs),yes)
  98         test ! -d $(hurd)/CVS || \
  99           (cd $(hurd) && cvs commit -m'Regenerated from $^' bits/errno.h)
 100 endif
 101         touch $@
 102
 103 common-generated += errnos.d stamp-errnos
 104 \f
 105 # We install the real libc.a as libcrt.a and as libc.a we install a linker
 106 # script which does -( -lcrt -lmachuser -lhurduser -).
 107
 108 libc-name = crt
 109
 110 ifeq (,$(subdir))
 111 install-others += $(inst_libdir)/libc.a
 112 $(inst_libdir)/libc.a: $(hurd)/libc-ldscript $(+force); $(do-install)
 113 ifeq (yes,$(build-profile))
 114 install-others += $(inst_libdir)/libc_p.a
 115 $(inst_libdir)/libc_p.a: $(hurd)/libc_p-ldscript $(+force); $(do-install)
 116 endif
 117 endif
 118
 119 # Make sure these are used to build the libc.so shared object too.  There
 120 # is a circular dependency between each of these shared objects and libc
 121 # (many high-level libc functions call stubs, stubs call low-level libc
 122 # functions like memcpy and mach_msg).  This works out fine at run time
 123 # (all the objects are loaded before resolving their symbols, so these
 124 # interdependencies are fine).  But to create the shared objects we must
 125 # link them one at a time; since each needs one or both of the others to
 126 # produce its DT_NEEDED entries and to assign its undefined symbols the
 127 # right symbol versions, we can't do any of them before the others!  To
 128 # get around this, we link each lib*user.so shared object twice.  First,
 129 # we link an object without reference to libc.so (since we haven't linked
 130 # libc.so yet), so it lacks a DT_NEEDED record for the libc soname it
 131 # depends on, and its undefined symbol references lack the symbol version
 132 # assignments they should have.  We will use this shared object solely to
 133 # link libc.so against it; that gives libc.so the proper DT_NEEDED record,
 134 # and symbol versions assignments (if the lib*user.so object is using them).
 135 # Finally we link a second version of the same lib*user.so shared object,
 136 # this time linked normally against libc so it gets a proper DT_NEEDED
 137 # record and symbol version set; this one can be installed for run-time use.
 138 rpcuserlibs := $(common-objpfx)mach/libmachuser.so \
 139                $(common-objpfx)hurd/libhurduser.so
 140 link-rpcuserlibs := $(rpcuserlibs:%user.so=%user-link.so)
 141 $(common-objpfx)libc.so: $(link-rpcuserlibs)
 142 rpath-dirs += mach hurd
 143
 144 # Make sure the `lib' pass builds the dummy shared objects so
 145 # we can link libc against them.
 146 ifeq (mach,$(subdir))
 147 lib-noranlib: $(common-objpfx)mach/libmachuser-link.so
 148 endif
 149 ifeq (hurd,$(subdir))
 150 lib-noranlib: $(common-objpfx)hurd/libhurduser-link.so
 151 endif
 152
 153 $(link-rpcuserlibs): %-link.so: %_pic.a
 154 # These shared objects are just for the purpose of linking libc,
 155 # so they don't need abi-note.o linked into them.
 156         $(build-shlib-helper) \
 157                 -nostdlib -o $@ \
 158                 -Wl,-soname=$(*F).so$($(*F).so-version) \
 159                 $(build-shlib-objlist)
 160 libmachuser-link.so-no-z-defs = yes
 161 libhurduser-link.so-no-z-defs = yes
 162
 163 # And get them into the libc.so ldscript.
 164 $(inst_libdir)/libc.so: $(rpcuserlibs)
 165
 166 # The RPC stubs from these libraries are needed in building the dynamic
 167 # linker, too.  It must be self-contained, so we link the needed PIC
 168 # objects directly into the shared object.
 169 ifeq (elf,$(subdir))
 170 $(objpfx)librtld.map: $(rpcuserlibs:.so=_pic.a)
 171
 172 CFLAGS-dl-load.c = -DEXTERNAL_MAP_FROM_FD
 173 endif
 174
 175 # We need these libs to link static programs in the libc source tree, too.
 176 ifeq (yes,$(build-static))
 177 link-libc-static := -Wl,-\( \
 178                     $(patsubst %,$(common-objpfx)%.a,\
 179                                libc mach/libmachuser hurd/libhurduser) \
 180                     $(static-gnulib) -Wl,-\)
 181 else
 182 ifeq (yes,$(build-shared))
 183 # We can try to link the programs with lib*_pic.a...
 184 link-libc-static := $(link-libc) -Wl,-\( \
 185                     $(patsubst %,$(common-objpfx)%_pic.a,\
 186                                libc mach/libmachuser hurd/libhurduser) \
 187                     $(static-gnulib) -Wl,-\)
 188 endif
 189 endif
 190 \f
 191 ifeq ($(subdir),csu)
 192
 193 extra-objs += static-start.o
 194
 195 # We need special startup code for statically linked binaries.
 196 $(objpfx)crt0.o: $(objpfx)static-start.o $(objpfx)abi-note.o $(objpfx)init.o
 197         $(link-relocatable)
 198
 199 endif
 200 \f
 201 ifeq (hurd, $(subdir))
 202 sysdep_routines += cthreads
 203 endif
 204
 205 ifeq ($(subdir),sunrpc)
 206 sysdep_headers += nfs/nfs.h
 207 endif
 208
 209 endif   # in-Makerules