I have ispconfig 3.1.15p3 Centos 7 apache php 7.2 I trying to add php 7.3 as multiple php version, at compiling php step as following Code: ./configure \ --prefix=/opt/php-7.3 \ --with-libdir=lib64 \ --disable-rpath \ --enable-fpm \ --with-fpm-user=apache \ --with-fpm-group=apache \ --enable-cgi \ --with-libxml-dir=/usr \ --with-openssl \ --with-pcre-regex \ --with-zlib \ --enable-bcmath \ --with-bz2 \ --enable-calendar \ --with-curl \ --enable-exif \ --enable-ftp \ --with-gd \ --with-jpeg-dir=/usr \ --with-png-dir=/usr \ --with-zlib-dir \ --with-freetype-dir \ --with-gettext \ --with-mhash \ --with-imap \ --with-kerberos \ --with-imap-ssl \ --enable-mbstring \ --enable-mbregex \ --with-mysqli \ --enable-opcache \ --enable-pcntl \ --with-pdo-mysql \ --enable-soap \ --enable-sockets \ --with-sodium \ --enable-sysvsem \ --enable-sysvshm \ --with-xmlrpc \ --with-xsl \ --enable-zip \ --with-libzip \ --enable-inline-optimization I got this error Code: configure: error: off_t undefined; check your library configuration I searched google for this error found some result about zlib configration, tried them but all failed! advice please
