* depstand.m4, lead-dot.m4: New files.

3 files changed, 172 insertions, 0 deletions

diff --git a/config/ChangeLog b/config/ChangeLog
index c773aadd4a..bba86988df 100644
--- a/config/ChangeLog
+++ b/config/ChangeLog
@@ -1,3 +1,7 @@
+2005-06-13  Zack Weinberg  <zack@codesourcery.com>
+
+	* depstand.m4, lead-dot.m4: New files.
+
 2005-05-19  Kelley Cook  <kcook@gcc.gnu.org>
 
 	* accross.m4: Delete file.
diff --git a/config/depstand.m4 b/config/depstand.m4
new file mode 100644
index 0000000000..8f936e0c26
--- /dev/null
+++ b/config/depstand.m4
@@ -0,0 +1,136 @@
+##                                                          -*- Autoconf -*-
+
+# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 8
+
+# Based on depend.m4 from automake 1.9, modified for standalone use in
+# an environment where GNU make is required. 
+
+# ZW_PROG_COMPILER_DEPENDENCIES
+# -----------------------------
+# Variant of _AM_DEPENDENCIES which just does the dependency probe and
+# sets fooDEPMODE accordingly.  Cache-variable compatible with
+# original; not side-effect compatible.  As the users of this macro
+# may require accurate dependencies for correct builds, it does *not*
+# honor --disable-dependency-checking, and failure to detect a usable
+# method is an error.  depcomp is assumed to be located in
+# $ac_aux_dir.
+#
+# FIXME: Should use the Autoconf 2.5x language-selection mechanism.
+
+AC_DEFUN([ZW_PROG_COMPILER_DEPENDENCIES],
+[ifelse([$1], CC,   [depcc="$CC"   am_compiler_list=],
+        [$1], CXX,  [depcc="$CXX"  am_compiler_list=],
+        [$1], OBJC, [depcc="$OBJC" am_compiler_list='gcc3 gcc'],
+        [$1], GCJ,  [depcc="$GCJ"  am_compiler_list='gcc3 gcc'],
+                    [depcc="$$1"   am_compiler_list=])
+
+am_depcomp=$ac_aux_dir/depcomp
+AC_CACHE_CHECK([dependency style of $depcc],
+               [am_cv_$1_dependencies_compiler_type],
+[if test -f "$am_depcomp"; then
+  # We make a subdir and do the tests there.  Otherwise we can end up
+  # making bogus files that we don't know about and never remove.  For
+  # instance it was reported that on HP-UX the gcc test will end up
+  # making a dummy file named `D' -- because `-MD' means `put the output
+  # in D'.
+  mkdir conftest.dir
+  # Copy depcomp to subdir because otherwise we won't find it if we're
+  # using a relative directory.
+  cp "$am_depcomp" conftest.dir
+  cd conftest.dir
+  # We will build objects and dependencies in a subdirectory because
+  # it helps to detect inapplicable dependency modes.  For instance
+  # both Tru64's cc and ICC support -MD to output dependencies as a
+  # side effect of compilation, but ICC will put the dependencies in
+  # the current directory while Tru64 will put them in the object
+  # directory.
+  mkdir sub
+
+  am_cv_$1_dependencies_compiler_type=none
+  if test "$am_compiler_list" = ""; then
+     am_compiler_list=`sed -n ['s/^\([a-zA-Z0-9]*\))$/\1/p'] < ./depcomp`
+  fi
+  for depmode in $am_compiler_list; do
+    if test $depmode = none; then break; fi
+
+    _AS_ECHO([$as_me:$LINENO: trying $depmode], AS_MESSAGE_LOG_FD)
+    # Setup a source with many dependencies, because some compilers
+    # like to wrap large dependency lists on column 80 (with \), and
+    # we should not choose a depcomp mode which is confused by this.
+    #
+    # We need to recreate these files for each test, as the compiler may
+    # overwrite some of them when testing with obscure command lines.
+    # This happens at least with the AIX C compiler.
+    : > sub/conftest.c
+    for i in 1 2 3 4 5 6; do
+      echo '#include "conftst'$i'.h"' >> sub/conftest.c
+      # Using `: > sub/conftst$i.h' creates only sub/conftst1.h with
+      # Solaris 8's {/usr,}/bin/sh.
+      touch sub/conftst$i.h
+    done
+    echo "include sub/conftest.Po" > confmf
+
+    # We check with `-c' and `-o' for the sake of the "dashmstdout"
+    # mode.  It turns out that the SunPro C++ compiler does not properly
+    # handle `-M -o', and we need to detect this.
+    depcmd="depmode=$depmode \
+       source=sub/conftest.c object=sub/conftest.${OBJEXT-o} \
+       depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
+       $SHELL ./depcomp $depcc -c -o sub/conftest.${OBJEXT-o} sub/conftest.c"
+    echo "| $depcmd" | sed -e 's/  */ /g' >&AS_MESSAGE_LOG_FD
+    if env $depcmd > conftest.err 2>&1 &&
+       grep sub/conftst6.h sub/conftest.Po >>conftest.err 2>&1 &&
+       grep sub/conftest.${OBJEXT-o} sub/conftest.Po >>conftest.err 2>&1 &&
+       ${MAKE-make} -s -f confmf >>conftest.err 2>&1; then
+      # icc doesn't choke on unknown options, it will just issue warnings
+      # or remarks (even with -Werror).  So we grep stderr for any message
+      # that says an option was ignored or not supported.
+      # When given -MP, icc 7.0 and 7.1 complain thusly:
+      #   icc: Command line warning: ignoring option '-M'; no argument required
+      # The diagnosis changed in icc 8.0:
+      #   icc: Command line remark: option '-MP' not supported
+      if (grep 'ignoring option' conftest.err ||
+          grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
+        am_cv_$1_dependencies_compiler_type=$depmode
+	_AS_ECHO([$as_me:$LINENO: success], AS_MESSAGE_LOG_FD)
+        break
+      fi
+    fi
+    _AS_ECHO([$as_me:$LINENO: failure, diagnostics are:], AS_MESSAGE_LOG_FD)
+    sed -e 's/^/| /' < conftest.err >&AS_MESSAGE_LOG_FD
+  done
+
+  cd ..
+  rm -rf conftest.dir
+else
+  am_cv_$1_dependencies_compiler_type=none
+fi
+])
+if test x${am_cv_$1_dependencies_compiler_type-none} = xnone
+then AC_MSG_ERROR([no usable dependency style found])
+else AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
+fi
+])
+
+# AM_SET_DEPDIR
+# -------------
+# Choose a directory name for dependency files.
+AC_DEFUN([AM_SET_DEPDIR],
+[AC_REQUIRE([AM_SET_LEADING_DOT])dnl
+AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
+])
+
+# ZW_CREATE_DEPDIR
+# ----------------
+# As AM_SET_DEPDIR, but also create the directory at config.status time.
+AC_DEFUN([ZW_CREATE_DEPDIR],
+[AC_REQUIRE([AM_SET_DEPDIR])dnl
+AC_CONFIG_COMMANDS([depdir], [mkdir $DEPDIR], [DEPDIR=$DEPDIR])
+])
diff --git a/config/lead-dot.m4 b/config/lead-dot.m4
new file mode 100644
index 0000000000..c8789fb2ce
--- /dev/null
+++ b/config/lead-dot.m4
@@ -0,0 +1,32 @@
+#                                                          -*- Autoconf -*-
+# Copyright (C) 2003  Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program 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 General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+# 02111-1307, USA.
+
+# serial 1
+
+# Check whether the underlying file-system supports filenames
+# with a leading dot.  For instance MS-DOS doesn't.
+AC_DEFUN([AM_SET_LEADING_DOT],
+[rm -rf .tst 2>/dev/null
+mkdir .tst 2>/dev/null
+if test -d .tst; then
+  am__leading_dot=.
+else
+  am__leading_dot=_
+fi
+rmdir .tst 2>/dev/null
+AC_SUBST([am__leading_dot])])