current sources .obj coff-i386 format cannot be changed into .o
elf32-i386 by any of our native tools. Only the devel/mingw32-binutils
port can handle coff-i386 but it cannot generate .elf32-i386. Even
using a middle way format (coff-i386 -> srec -> elf32-i386) does
not help: the .o still do not link correctly.