GD: Call to undefined function: imagettftext()

Hello, I'm trying to get to run the GD function imagettftext(). Compilation and installation seems to work fine, but when running a script with this function i get this error: "Call to undefined function: imagettftext()." The same script runs fine under the Win binaries. Has anyone an idea what is wrong? Other GD function I am using are OK so far. //====================== Configure Command './configure' '--with-apache=../apache' '--enable-debug=no' '--enable-track-vars=yes' '--with-mysql' '--with-gd' '--with-ttf' '--enable-gd-native-ttf' '--enable-gd-imgstrttf' '--with-jpeg-dir=/usr/local' '--with-png' '--with-zlib-dir=./ext/zlib' '--with-xml' '--enable-ftp' '--enable-memory-limit=yes' PHP Verison 4.3.0 GD bundled Thanx