Files now copied to build directory instead of source directory while configuring

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%40724

acinclude.m4

@@ -4,9 +4,13 @@ dnl Function to link an architecture specific file
 dnl LINK_ARCH_SRC(source_dir, arch, source_file)
 AC_DEFUN(COPY_ARCH_SRC,
 [
-  echo "Copying $1/$2/$3 -> $1/$3"
   old="$srcdir/$1/$2/$3"
-  new="$srcdir/$1/$3"
+  new="$1/$3"
+  if test ! -d $1; then
+    echo "Creating directory $1"
+    mkdir -p $1
+  fi
+  echo "Copying $old -> $new"
   cat >$new <<__EOF__
 /* WARNING:  This file was automatically generated!
  * Original: $old

configure.in

@@ -2646,6 +2646,7 @@ CFLAGS="$CFLAGS -I\$(top_srcdir)/src/thread"
 CFLAGS="$CFLAGS -I\$(top_srcdir)/src/timer"
 CFLAGS="$CFLAGS -I\$(top_srcdir)/src/endian"
 CFLAGS="$CFLAGS -I\$(top_srcdir)/src/file"
+CFLAGS="$CFLAGS -I\$(top_builddir)/src/thread"
 CXXFLAGS="$CFLAGS"