sysdeps/mach/Makefile

   1 # Copyright (C) 1993, 1994 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
  16 # not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 # Cambridge, MA 02139, USA.
  18
  19 ifndef mach-srcdir-computed
  20 mach-srcdir-computed := yes
  21
  22 # If we were configured with `--with-mach=DIR', then config.make sets
  23 # mach-srcdir to DIR.  Otherwise guess we are in a big source tree.
  24 ifndef mach-srcdir
  25 mach-srcdir = ../mach
  26 endif
  27
  28 # mach-srcdir is now set to the logical directory name.  This name might be
  29 # relative to $(objdir), might be relative to the source directory $(..), or
  30 # might be absolute.  We choose among these possibilities by looking for a
  31 # canonical file in each of those places (in that order).
  32 f := mach/mach.defs # Random file that identifies the Mach source dir.
  33 f := $(strip $f)
  34 mach-srcdir := $(firstword $(patsubst %/$f,%,$(wildcard $(addsuffix /$f,\
  35                $(objpfx)$(mach-srcdir) $(..)$(mach-srcdir)))) $(mach-srcdir))
  36
  37 endif   # ! mach-srcdir-computed
  38 \f
  39 ifdef in-Makerules
  40
  41 # Look for header files in mach/ under the top-level library source directory.
  42 includes += -I$(..)mach
  43
  44 # When compiling, use the Mach header files directly from the kernel sources.
  45 includes += -I$(mach-srcdir)
  46
  47 # Find Mach header files in the kernel source.
  48 vpath mach/%.h $(mach-srcdir)
  49 vpath device/%.h $(mach-srcdir)
  50
  51 ifneq (mach,$(subdir))
  52 # Subdirectories other than mach/ might use the generated Mach headers.
  53 # So make sure we get a chance to run in mach/ to make them before all else.
  54
  55 ifdef objpfx
  56 mach-objpfx = $(objpfx)
  57 else
  58 mach-objpfx = $(..)mach/
  59 endif
  60
  61 # These are all the generated files that <mach.h> includes.
  62 mach-before-compile := $(mach-objpfx)mach-shortcuts.h \
  63                        $(patsubst %,$(mach-objpfx)mach/mach_%.h,\
  64                                   interface port host)
  65
  66 # This patsubst generates patterns like `m%h-shortcuts.h', which are damn
  67 # likely to match just the corresponding particular file we want.
  68 $(patsubst mach%,m\%h%,$(mach-before-compile)): # Run only if doesn't exist.
  69         $(MAKE) -C $(..)mach generated no_deps=t
  70
  71 before-compile += $(mach-before-compile)
  72 endif
  73
  74 endif   # in-Makerules