Makinng with configure:

./configure  --disable-debug --enable-safe-mode
--enable-track-vars --enable-magic-quotes --enable-force-cgi-redirect --with-mys
ql=/usr/local/mysql --enable-memory-limit --with-sybase=/usr/local/freetds

It fails with:

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)
make[3]: *** [sybase.lo] Error 1
make[3]: Leaving directory `/root/php4/ext/sybase'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/root/php4/ext/sybase'
make[1]: *** [all] Error 1
make[1]: Leaving directory `/root/php4/ext'
make: *** [all-recursive] Error 1

PHP3 builds OK with this configuration. It seems that something has changed in php's list scheme and Sybase.c didn't change.