Hi, I pushed the fltk-1.4 branch to support building dillo with FLTK >= 1.4. It needs the configure flag --enable-experimental-fltk: https://git.dillo-browser.org/dillo/log/?h=fltk-1.4 The objective is to allow early adopters to build dillo so we can unblock the next 3.3.0 release. There are known problems with scrolling and with font hinting and antialiasing which I will be focusing later. For know I'm interested in testing that dillo can build correctly with FLTK 1.4 on different platforms. To build, use this with the path to fltk-config binary of FLTK 1.4: % ../configure --enable-experimental-fltk FLTK_CONFIG=/.../fltk-config Or manually specify the flags with FLTK_CFLAGS, FLTK_CXXFLAGS and FLTK_LIBS variables. Dillo should report the FLTK version: % dillo -v Dillo v3.2.0-162-g6142b99f Libraries: fltk/1.4.4 jpeg/3.1.2 png/1.6.53 webp/1.6.0 zlib/1.3.1 brotli/1.1.0 OpenSSL/3.6.0 Features: +GIF +JPEG +PNG +SVG +WEBP +BROTLI +XEMBED +TLS +IPV6 +CTL Let me know if you encounter any problems during the build. Patches that solve rendering problems are very much welcome. Best, Rodrigo.