The request names Qt, so Qt comes first: it is a suite of tools covering planning, design, development, testing and deployment 1, with a Qt development skills action for Qt C++/QML code review and documentation 11. Since the request is for the Qt C++ base library rather than the wider toolkit, CMake is the standard build system for C++ code 2 and POCO offers cross-platform C++ class libraries for network and embedded applications 9.

1. 1

   Qtqt.ioverified and signed

   Qt provides tools for every stage of the software lifecycle, from design through development, testing and deployment 1, and its qt-development-skills action covers Qt C++/QML code review, QML coding and documentation 11.

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   for agents: qt-development-skills

2. 2

   CMakecmake.orgverified and signed

   CMake is a build-system tool for managing the software build process and is described as the de-facto standard for building C++ code 2.

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   +8 community tools built for it

   for agents: c++ · cross-platform · cross-compilation

3. 3

   POCO C++ Librariespocoproject.orgwebsite read, tools not yet checked

   The POCO C++ Libraries are open source, cross-platform C++ class libraries for building network and internet-based applications on desktop, server, mobile, IoT and embedded systems 9.

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