title: NGINX 1.11.5 image filter module unknow directive
body: <p>I have NGINX v 1.11.5 this is the response from nginx -V:</p>
  
  <pre><code>    nginx version: nginx/1.11.5 built with OpenSSL 1.0.1 14 Mar 2012
  TLS SNI support enabled
  configure arguments: --with-cc-opt='-g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wformat-security -Werror=format-security -D_FORTIFY_SOURCE=2' --with-ld-opt='-Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now' --prefix=/usr/share/nginx --conf-path=/etc/nginx/nginx.conf --http-log-path=/var/log/nginx/access.log --error-log-path=/var/log/nginx/error.log --lock-path=/var/lock/nginx.lock --pid-path=/run/nginx.pid --modules-path=/usr/lib/nginx/modules --http-client-body-temp-path=/var/lib/nginx/body --http-fastcgi-temp-path=/var/lib/nginx/fastcgi --http-proxy-temp-path=/var/lib/nginx/proxy --http-scgi-temp-path=/var/lib/nginx/scgi --http-uwsgi-temp-path=/var/lib/nginx/uwsgi --with-debug --with-pcre-jit --with-ipv6 --with-http_ssl_module --with-http_stub_status_module --with-http_realip_module --with-http_auth_request_module --with-http_v2_module --with-http_dav_module --with-http_slice_module --with-threads --with-http_addition_module --with-http_flv_module --with-http_geoip_module=dynamic --with-http_gunzip_module --with-http_gzip_static_module --with-http_image_filter_module=dynamic --with-http_mp4_module --with-http_perl_module=dynamic --with-http_random_index_module --with-http_secure_link_module --with-http_sub_module --with-http_xslt_module=dynamic --with-mail=dynamic --with-mail_ssl_module --with-stream=dynamic --with-stream_ssl_module --add-dynamic-module=/build/nginx-VZwxAJ/nginx-1.11.5/debian/modules/headers-more-nginx-module --add-dynamic-module=/build/nginx-VZwxAJ/nginx-1.11.5/debian/modules/nginx-auth-pam --add-dynamic-module=/build/nginx-VZwxAJ/nginx-1.11.5/debian/modules/nginx-cache-purge --add-module=/build/nginx-VZwxAJ/nginx-1.11.5/debian/modules/nginx-dav-ext-module --add-dynamic-module=/build/nginx-VZwxAJ/nginx-1.11.5/debian/modules/nginx-development-kit --add-dynamic-module=/build/nginx-VZwxAJ/nginx-1.11.5/debian/modules/nginx-echo --add-dynamic-module=/build/nginx-VZwxAJ/nginx-1.11.5/debian/modules/ngx-fancyindex --add-dynamic-module=/build/nginx-VZwxAJ/nginx-1.11.5/debian/modules/nchan --add-dynamic-module=/build/nginx-VZwxAJ/nginx-1.11.5/debian/modules/nginx-lua --add-dynamic-module=/build/nginx-VZwxAJ/nginx-1.11.5/debian/modules/nginx-upload-progress --add-dynamic-module=/build/nginx-VZwxAJ/nginx-1.11.5/debian/modules/nginx-upstream-fair --add-dynamic-module=/build/nginx-VZwxAJ/nginx-1.11.5/debian/modules/ngx_http_substitutions_filter_module
  </code></pre>
  
  <p>as you can see I have </p>
  
  <pre><code>--with-http_image_filter_module=dynamic
  </code></pre>
  
  <p>when I insert into my configuration file, under location, the tag image_filter I get this error</p>
  
  <pre><code>nginx: [emerg] unknown directive "image_filter" in ....
  </code></pre>
  
  <p>any idea?</p>
  
  <p>thanks</p>
  
  <p>--update--
  configuration:</p>
  
  <pre><code>location ~ "^/media/(?&lt;width&gt;\d+)/(?&lt;image&gt;.+)$" {
      alias /var/www/images/$image;
      image_filter resize $width -;
      image_filter_jpeg_quality 75;
      image_filter_buffer 8M;
  }
  </code></pre>