compile failure: PHP4, Sybase-CT, Apache

I am followed the instructions to compile PHP 4 with the Sybase-CT libraries and when I run make I get the following error: Making all in . make[1]: Entering directory `/root/php-4.0RC1' /bin/sh ./libtool --silent --mode=link gcc -g -O2 -Wall -o libphp4.la -rpath /root/php-4.0RC1/libs -avoid-version -L/root/sybase/lib -R /root/sybase/lib main.lo internal_functions.lo snprintf.lo php_sprintf.lo configuration-parser.lo configuration-scanner.lo safe_mode.lo fopen-wrappers.lo php_realpath.lo alloca.lo php_ini.lo SAPI.lo rfc1867.lo dlist.lo php_content_types.lo strlcpy.lo strlcat.lo mergesort.lo reentrancy.lo php_variables.lo php_ticks.lo Zend/libZend.la sapi/apache/libsapi.la regex/libregex.la ext/db/libdb.la ext/mysql/libmysql.la ext/pcre/libpcre.la ext/posix/libposix.la ext/session/libsession.la ext/standard/libstandard.la ext/sybase_ct/libsybase_ct.la ext/xml/libxml.la -lgdbm -ldl -linsck -lsybtcl -lintl -lcomn -lct -lcs -ldl -lresolv -lm -lcrypt -lnsl -lresolv collect2: ld terminated with signal 11 [Segmentation fault], core dumped make[1]: *** [libphp4.la] Error 1 make[1]: Leaving directory `/root/php-4.0RC1' make: *** [all-recursive] Error 1 I have in the past successfully compiled PHP3 and Apache (although this time I am doing it as an Apache module), but I am not a programmer and I don't really know what I am doing! I would not be trying to do this at all if there was a debian package for the Sybase-CT module (as there is, say, for MySQL). I have used the debian package approach on another machine and it installed like a charm. I like PHP 4 a lot. Any help much appreciated. Thanks, Joseph Vaughan