sh ./Configure -des -Dusecrosscompile -D...
This will make the cpp symbol USE_CROSS_COMPILE and the %Config
-symbol C<usecrosscompile> available.
+symbol C<usecrosscompile> available, and C<xconfig.h> will be used
+for cross-compilation.
During the Configure and build, certain helper scripts will be created
into the Cross/ subdirectory. The scripts are used to execute a