sysdeps/mach/hurd/Makefile

   1 # Copyright (C) 1993, 94, 95, 96, 97, 98, 99 Free Software Foundation, Inc.
   2 # This file is part of the GNU C Library.
   3
   4 # The GNU C Library is free software; you can redistribute it and/or
   5 # modify it under the terms of the GNU Library General Public License
   6 # as published by the Free Software Foundation; either version 2 of
   7 # the License, or (at your option) any later version.
   8
   9 # The GNU C Library is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 # Library General Public License for more details.
  13
  14 # You should have received a copy of the GNU Library General Public
  15 # License along with the GNU C Library; see the file COPYING.LIB.  If not,
  16 # write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17 # Boston, MA 02111-1307, USA.
  18
  19 ifdef in-Makerules
  20
  21 # Look for header files in hurd/ under the top-level library source directory.
  22 # Look for generated header files where they get created.
  23 includes += -I$(..)hurd -I$(common-objpfx)hurd/
  24
  25 # We use the style `if (err = call(...))' a lot in the Hurd code,
  26 # where we have a lot of functions that return zero or an errno code.
  27 +cflags += -Wno-parentheses
  28
  29 # Do not use any assembly code from sysdeps/unix (and subdirectories).
  30 # This bypasses all the system call stubs and uses any existing posix or
  31 # generic C files instead.
  32 inhibit-sysdep-asm += unix*
  33 inhibit-unix-syscalls = yes
  34
  35 # Don't try to generate anything from the installed Unix system and its
  36 # libraries.  That is only of use when building for a Unix system, so as to
  37 # be compatible with some existing binaries for that system.
  38 inhibit-glue = yes
  39
  40 ifeq (,$(filter mach hurd,$(subdir)))
  41 # Subdirectories other than hurd/ might use the generated Hurd headers.
  42 # So make sure we get a chance to run in hurd/ to make them before all else.
  43 # (But we don't want to do this in mach/, because hurd/ needs some things
  44 # there, and we know mach/ doesn't need anything from hurd/.)
  45
  46 hurd-objpfx = $(common-objpfx)hurd/
  47
  48 # These are all the generated headers that <hurd.h> includes.
  49 before-compile += $(patsubst %,$(hurd-objpfx)hurd/%.h,auth io fs process)
  50 $(patsubst %,$(hurd-objpfx)hurd/%.%,auth io fs process):
  51         $(MAKE) -C $(..)hurd before-compile no_deps=t
  52 endif
  53
  54 # Hurd profil.c includes this file, so give a rule to make it.
  55 ifeq ($(subdir),gmon)
  56 $(common-objpfx)hurd/../mach/RPC_task_get_sampled_pcs.c:
  57         $(MAKE) -C $(..)mach before-compile no_deps=t
  58 endif
  59
  60 \f
  61 # Generate bits/errno.h from the section of the manual that lists all the errno
  62 # codes.
  63
  64 errno.texinfo = $(..)manual/errno.texi
  65
  66 hurd = $(..)sysdeps/mach/hurd
  67
  68 define mach-errno-h
  69 ($(foreach h,mach/message.h \
  70              mach/kern_return.h \
  71              mach/mig_errors.h \
  72              device/device_types.h,\
  73  echo '#include <$h>';\
  74  ))
  75 endef
  76
  77 # We use the compiler to generate a list of absolute file names for
  78 # the headers we want to search for Mach error codes, listed above (and
  79 # incidentally, all other headers those include).
  80 -include $(common-objpfx)errnos.d
  81 $(common-objpfx)errnos.d: $(mach-errnos-deps)
  82         $(mach-errno-h) | \
  83         $(CC) $(CPPFLAGS) -M -x c - | \
  84         sed $(sed-remove-objpfx) -e 's,- *:,mach-errnos-deps :=,' \
  85             -e 's,\.\./,$(..),g' > $@t
  86         mv -f $@t $@
  87
  88 $(hurd)/bits/errno.h: $(common-objpfx)stamp-errnos ;
  89 $(common-objpfx)stamp-errnos: $(hurd)/errnos.awk $(errno.texinfo) \
  90                               $(mach-errnos-deps) $(common-objpfx)errnos.d
  91         $(AWK) -f $^ > $(hurd)/bits/errno.h-tmp
  92 # Make it unwritable so noone will edit it by mistake.
  93         -chmod a-w $(hurd)/bits/errno.h-tmp
  94         $(move-if-change) $(hurd)/bits/errno.h-tmp $(hurd)/bits/errno.h
  95 ifeq ($(with-cvs),yes)
  96         test ! -d $(hurd)/CVS || \
  97           (cd $(hurd) && cvs commit -m'Regenerated from $^' bits/errno.h)
  98 endif
  99         touch $@
 100
 101 common-generated += errnos.d stamp-errnos
 102 \f
 103 # We install the real libc.a as libcrt.a and as libc.a we install a linker
 104 # script which does -( -lcrt -lmachuser -lhurduser -).
 105
 106 libc-name = crt
 107
 108 ifeq (,$(subdir))
 109 install-others += $(inst_libdir)/libc.a $(inst_libdir)/libc_p.a
 110 $(inst_libdir)/libc.a: $(hurd)/libc-ldscript $(+force); $(do-install)
 111 $(inst_libdir)/libc_p.a: $(hurd)/libc_p-ldscript $(+force); $(do-install)
 112 endif
 113
 114 # Make sure these are used to build the libc.so shared object too.  There
 115 # is a circular dependency between each of these shared objects and libc
 116 # (many high-level libc functions call stubs, stubs call low-level libc
 117 # functions like memcpy and mach_msg).  This works out fine at run time
 118 # (all the objects are loaded before resolving their symbols, so these
 119 # interdependencies are fine).  But to create the shared objects we must
 120 # link them one at a time; since each needs one or both of the others to
 121 # produce its DT_NEEDED entries and to assign its undefined symbols the
 122 # right symbol versions, we can't do any of them before the others!  To
 123 # get around this, we link each lib*user.so shared object twice.  First,
 124 # we link an object without reference to libc.so (since we haven't linked
 125 # libc.so yet), so it lacks a DT_NEEDED record for the libc soname it
 126 # depends on, and its undefined symbol references lack the symbol version
 127 # assignments they should have.  We will use this shared object solely to
 128 # link libc.so against it; that gives libc.so the proper DT_NEEDED record,
 129 # and symbol versions assignments (if the lib*user.so object is using them).
 130 # Finally we link a second version of the same lib*user.so shared object,
 131 # this time linked normally against libc so it gets a proper DT_NEEDED
 132 # record and symbol version set; this one can be installed for run-time use.
 133 rpcuserlibs := $(common-objpfx)mach/libmachuser.so \
 134                $(common-objpfx)hurd/libhurduser.so
 135 link-rpcuserlibs := $(rpcuserlibs:%user.so=%user-link.so)
 136 $(common-objpfx)libc.so: $(link-rpcuserlibs)
 137 rpath-dirs += mach hurd
 138
 139 # Make sure the `lib' pass builds the dummy shared objects so
 140 # we can link libc against them.
 141 ifeq (mach,$(subdir))
 142 lib-noranlib: $(common-objpfx)mach/libmachuser-link.so
 143 endif
 144 ifeq (hurd,$(subdir))
 145 lib-noranlib: $(common-objpfx)hurd/libhurduser-link.so
 146 endif
 147
 148 $(link-rpcuserlibs): %-link.so: %_pic.a
 149         $(build-module) -nostdlib -Wl,-soname=$(*F).so$($(*F).so-version)
 150
 151 # And get them into the libc.so ldscript.
 152 $(inst_libdir)/libc.so: $(rpcuserlibs)
 153
 154 # The RPC stubs from these libraries are needed in building the dynamic
 155 # linker, too.  It must be self-contained, so we link the needed PIC
 156 # objects directly into the shared object.
 157 ifeq (elf,$(subdir))
 158 $(objpfx)librtld.os: $(rpcuserlibs:.so=_pic.a)
 159
 160 CFLAGS-dl-load.c = -DEXTERNAL_MAP_FROM_FD
 161 endif
 162
 163 # We need these libs to link static programs in the libc source tree, too.
 164 ifeq (yes,$(build-static))
 165 link-libc-static := -Wl,-\( \
 166                     $(patsubst %,$(common-objpfx)%.a,\
 167                                libc mach/libmachuser hurd/libhurduser) \
 168                     $(gnulib) -Wl,-\)
 169 else
 170 ifeq (yes,$(build-shared))
 171 # We can try to link the programs with lib*_pic.a...
 172 link-libc-static := $(link-libc) -Wl,-\( \
 173                     $(patsubst %,$(common-objpfx)%_pic.a,\
 174                                libc mach/libmachuser hurd/libhurduser) \
 175                     $(gnulib) -Wl,-\)
 176 endif
 177 endif
 178 \f
 179 ifeq (hurd, $(subdir))
 180 sysdep_routines += cthreads
 181 endif
 182
 183 endif   # in-Makerules