Ladies and Gentlemen, I installed gpc-2.0 on Digital Unix (Alpha) V4.0A and I saw the following problems. 1. The compiler (I think is gcc 2.7.2.1 compiles this and not /usr/bin/cc) could not compile the file "gpc-decl.c" . The error was in line 2962 TREE_CODE (TREE_VALUE (tail)) = code; The compile said it was not an l-value. I worked around by eliminating the conditional, and typing return NULL_TREE; for both cases. Will this break the compiler functionality? 2. The file "gpc-module.c" has several '#define' statements and not starting at first character of the line. The link editor failed because of this, eg ld: unreolved STORE_SPECIAL 3. The rts/Makefile generated needed some editiong, ie adding a "../" for the gcc path name. Regards Gary Narayanan gsn@zk3.dec.com