[PHP] Erreur dans ./configure

Salut,
j'ai un problème pour ma compilation de PHP lors du configure :

 ./configure --with-apxs2=/usr/local/apache2/bin/apxs  --enable-memory-limit --disable-debug --with-regex=php --disable-rpath --disable-static --with-pic --with-layout=GNU --with-pear=/usr/share/php --enable-calendar --enable-sysvsem --enable-sysvshm --enable-sysvmsg --enable-track-vars --enable-trans-sid --enable-bcmath --with-bz2  --enable-ctype --with-db4=/usr/local/BerkeleyDB.4.6 --with-iconv --enable-exif --enable-filepro --enable-ftp --with-gettext --enable-mbstring --with-pcre-regex=/usr/local/include   --enable-shmop --enable-sockets --enable-wddx --disable-xml --with-expat-dir=/usr --with-xmlrpc --enable-yp --with-zlib --without-pgsql --with-kerberos=/usr/kerberos5  --with-openssl=/usr/local/ssl --with-zip=/usr --enable-dbx --with-mime-magic=/usr/share/magic.mime --with-exec-dir=/usr/lib/php4/libexec --without-mm --with-mysql --without-sybase-ct --with-jpeg-dir=/usr/local/include  --with-png-dir=/usr/local/lib --with-freetype-dir=/usr/local/include --with-gd=/usr/local/lib   --with-ldap=/usr/local/bin --with-imap=/usr/local/bin/lib/imap-2006k --with-imap-ssl

j'ai une erreur : PHP error utf8_mime2text() has new signature, but U8T_CANONICAL is missing. This should not happen.

j'avais trouvé la soluce mais j'ai oublié :/. Je crois que c'est une librairie manquante, mais je ne sais plus laquelle..

Fedora 7