Hello, I've just tried it myself, and as you say the CMD.exe prompt doesn't allow these lengths. However by creating a Makefile which contain this huge command-line (9116 characters), I was able to successfully pass it to GCC. I was using the DJGPP (DOS) ports of gcc/make on Windows XP 32-bit. Are you sure that this is a limitation in GCC and not in CMD.exe? Cygwin does in fact also invoke CMD.exe for the prompt. -- Viktor Brange