fi
#Directory where a (cygwin-free) perl binary resides.
-export perl_dir=$old_ghc_top
+if [ "x${perl_dir}" == "x" ]; then
+ export perl_dir=$old_ghc_top
+fi
#
# The mingw include, lib, and bin directories; all derived
# from ${mingw_top}.
#
-export mingw_include=$mingw_top/include
-export mingw_lib=$mingw_top/lib
-export mingw_bin=$mingw_top/bin
+if [ "x${mingw_include}" == "x" ]; then
+ export mingw_include=$mingw_top/include
+fi
+if [ "x${mingw_lib}" == "x" ]; then
+ export mingw_lib=$mingw_top/lib
+fi
+if [ "x${mingw_bin}" == "x" ]; then
+ export mingw_bin=$mingw_top/bin
+fi
# Check that we're in an OK place before starting to re-org
# the directory tree..