Merge GDB 7.5.1

gdb/acx_configure_dir.m4

Index: gdb/acx_configure_dir.m4
diff --git a/gdb/acx_configure_dir.m4 b/gdb/acx_configure_dir.m4
new file mode 100644
index 0000000000000000000000000000000000000000..e4318751478ddc603e41ae3a3fe74f1c7100a829
--- /dev/null
+++ b/gdb/acx_configure_dir.m4
@@ -0,0 +1,117 @@
+# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
+# 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2012 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.
+
+# ACX_CONFIGURE_DIR(SRC-DIR-NAME, BUILD-DIR-NAME)
+# ---------------------------
+#
+# Configure a subdirectory.  This is an alternative to
+# AC_CONFIG_SUBDIRS that allows pointing the source directory
+# somewhere else.  The build directory is always a subdirectory of the
+# top build directory.  This is heavilly based on Autoconf 2.64's
+# _AC_OUTPUT_SUBDIRS.
+#
+# Inputs:
+#   - SRC-DIR-NAME is the source directory, relative to $srcdir.
+#   - BUILD-DIR-NAME is `top-build -> build'
+
+AC_DEFUN([ACX_CONFIGURE_DIR],
+[
+  in_src=$1
+  in_build=$2
+
+  # Remove --cache-file, --srcdir, and --disable-option-checking arguments
+  # so they do not pile up.
+  ac_sub_configure_args=
+  ac_prev=
+  eval "set x $ac_configure_args"
+  shift
+  for ac_arg
+  do
+    if test -n "$ac_prev"; then
+      ac_prev=
+      continue
+    fi
+    case $ac_arg in
+    -cache-file | --cache-file | --cache-fil | --cache-fi \
+    | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)
+      ac_prev=cache_file ;;
+    -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
+    | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* \
+    | --c=*)
+      ;;
+    --config-cache | -C)
+      ;;
+    -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
+      ac_prev=srcdir ;;
+    -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
+      ;;
+    -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
+      ac_prev=prefix ;;
+    -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
+      ;;
+    --disable-option-checking)
+      ;;
+    *)
+      case $ac_arg in
+      *\'*) ac_arg=`AS_ECHO(["$ac_arg"]) | sed "s/'/'\\\\\\\\''/g"` ;;
+      esac
+      AS_VAR_APPEND([ac_sub_configure_args], [" '$ac_arg'"]) ;;
+    esac
+  done
+
+  # Always prepend --prefix to ensure using the same prefix
+  # in subdir configurations.
+  ac_arg="--prefix=$prefix"
+  case $ac_arg in
+  *\'*) ac_arg=`AS_ECHO(["$ac_arg"]) | sed "s/'/'\\\\\\\\''/g"` ;;
+  esac
+  ac_sub_configure_args="'$ac_arg' $ac_sub_configure_args"
+
+  # Pass --silent
+  if test "$silent" = yes; then
+    ac_sub_configure_args="--silent $ac_sub_configure_args"
+  fi
+
+  # Always prepend --disable-option-checking to silence warnings, since
+  # different subdirs can have different --enable and --with options.
+  ac_sub_configure_args="--disable-option-checking $ac_sub_configure_args"
+
+  ac_popdir=`pwd`
+  ac_dir=$in_build
+
+  ac_msg="=== configuring in $ac_dir (`pwd`/$ac_dir)"
+  _AS_ECHO_LOG([$ac_msg])
+  _AS_ECHO([$ac_msg])
+  AS_MKDIR_P(["$ac_dir"])
+
+  case $srcdir in
+  [[\\/]]* | ?:[[\\/]]* )
+    ac_srcdir=$srcdir/$in_src ;;
+  *) # Relative name.
+    ac_srcdir=../$srcdir/$in_src ;;
+  esac
+
+  cd "$ac_dir"
+
+  ac_sub_configure=$ac_srcdir/configure
+
+  # Make the cache file name correct relative to the subdirectory.
+  case $cache_file in
+  [[\\/]]* | ?:[[\\/]]* ) ac_sub_cache_file=$cache_file ;;
+  *) # Relative name.
+    ac_sub_cache_file=$ac_top_build_prefix$cache_file ;;
+  esac
+
+  AC_MSG_NOTICE([running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir])
+  # The eval makes quoting arguments work.
+  eval "\$SHELL \"\$ac_sub_configure\" $ac_sub_configure_args \
+       --cache-file=\"\$ac_sub_cache_file\" --srcdir=\"\$ac_srcdir\"" ||
+    AC_MSG_ERROR([$ac_sub_configure failed for $ac_dir])
+
+  cd "$ac_popdir"
+])# ACX_CONFIGURE_DIR