error in make

Hello, I am trying to install php4.0.6 on an alpha running OSF V5.1 This is the configuration i am using: ./configure --with-apxs=/usr/local/apache/bin/apxs --with-mysql=/usr/local/mysql --with-gd=/usr/local/src/gd-1.8.4 --with-png-dir=/usr/local/src/libpng-1.2.0 --with-zlib-dir=/usr/local/src/zlib --with-curl=/usr/local/lib --with-calendar --with-jpeg-dir=/usr/local/src/jpeg-6b/ --with-imap-ssl (I also tried using just --with-imap instead of --with-imap-ssl, but i am running apache with ssl. Both times i got the same error below). My imap c-client.a is in /usr/lib and the required .h files are in /usr/include. This is the error is get during make: cc: Error: scanf.h, line 48: There is no definition for the inline function named scan_set_error_return in this compilation unit. (noinlfunc) inline void scan_set_error_return(int numVars,pval **return_value); I did try chaning some configuration options, but this error seems to have something to do with php itself. Any ideas? thanks in advance! -tom ..