PHP4 error compiling ext/sybase/sybase.c as .SO

when compiling php as DSO I have this error any help? /bin/sh ../../libtool --silent --mode=compile gcc -DHAVE_CONFIG_H -I. -I/home/local/src/php-4.0b4pl1/ext/sybase -I../.. -I../../Zend -I/home/local/src/php-4.0b4pl1 -I/home/local/apache_1.3.9/include -I/home/local/src/mysql-3.22.27/include -I/home/local/src/libiodbc-2.50.3/include -I/home/local/sybase-11.9.2-1//include -I/home/local/src/php-4.0b4pl1/ext/xml/expat/xmltok -I/home/local/src/php-4.0b4pl1/ext/xml/expat/xmlparse -DXML_BYTE_ORDER=12 -D_REENTRANT -g -O2 -Wall -c sybase.c sybase.c: In function `php_sybase_do_connect': sybase.c:260: `list' undeclared (first use in this function) sybase.c:260: (Each undeclared identifier is reported only once sybase.c:260: for each function it appears in.) sybase.c:261: `plist' undeclared (first use in this function) sybase.c: In function `php_if_sybase_fetch_object': sybase.c:952: warning: implicit declaration of function `php_sybase_fetch_hash' sybase.c: At top level: sybase.c:907: warning: `php_if_sybase_fetch_hash' defined but not used make[3]: *** [sybase.lo] Error 1