Qt is a cross-platform C++ application framework. Qt's primary feature is its rich set of widgets that provide standard GUI functionality. This is a legacy build of the old 5.9.x LTS version. The following are optional dependencies that Qt will link against if they are detected at build time: libwebp opus pcre2 snappy libinput ============================================================ OPTIONS To use Qt's built-in ccache option: CCACHE=yes ./qt5-legacy.SlackBuild To build the documentation: DOCS=yes ./qt5-legacy.SlackBuild To build the examples: EXAMPLES=yes ./qt5-legacy.SlackBuild To build support for proprietary media codecs: PROPRIETARY_CODECS=yes ./qt5-legacy.SlackBuild (this will produce a non-redistributable package in some countries) To disable support for pulseaudio: PULSEAUDIO=no ./qt5-legacy.SlackBuild (Qt will automatically detect if pulseaudio is not installed at build time and disable it if it is missing.) To NOT build qtwebengine (EXPERIMENTAL): WEBENGINE=no ./qt5-legacy.SlackBuild Combine any or all of the above. ============================================================ GENERAL NOTES After upgrading qt5-legacy it is important to rebuild qt5ct too, if it is installed, or some applications may not display or function correctly. Please report any problems about applications that don't work correctly to the qt5-legacy maintainer or to the mailing list. ============================================================ BUILDING WITHOUT WEBENGINE YMMV whether it works with an application or not, but if you have no intention of using the browser code, which includes a chunk of 3rd party Google Chromium source, then it may make sense to skip it and save yourself about 2/3 of the build time. The package version has _nowebengine appended to it for clarity.