1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking.org

Using Clang To Auto-Convert Qt 4 To Qt 5

Compiler

Published on 20 June 2012 03:15 PM EDT
Written by Michael Larabel in Compiler
12 Comments

There's new work underway to take advantage of LLVM's Clang tooling to auto-convert most Qt 4.x code into being Qt 5.0-compatible.

A developer at KDAB has been working on automated porting from Qt 4 to Qt 5 C++ code using Clang, as mentioned in this blog post. "While porting KDE code from Qt 4 to Qt 5, I initially wrote some sed scripts to assist with porting, but then started investigating semantic tooling to help with the task. The result is a tool which can automate with precision some of the boring API renames which are a necessary part of any Qt 4 to 5 port. Initially I called it ‘Captcha’ for ‘Clang Assisted Porting Tool using Compilation, Heuristics and Algorithms’, and because it makes the computer do a better porting job than humans."

This Clang code supports renaming class methods, enums, and functions to become compatible with Qt5 while still maintaining backwards compatibility, etc.

Check out the KDAB blog post for more technical details about this work. The blog post ends with, "This clang based tooling was fun to write and the porting API in clang is certainly interesting (the subject of a future blog post). A tool like this is capable doing many boring parts of what is required in porting, such as renaming methods, and it works quite well, but it will never port from QtWidgets to QML for example. The automatable part of a Qt 4 to 5 port will always be the a subset of the same possibilities. Some existing code will use QRegion::intersect, while others will not. The tool can test the codebase for what is required though of course, so it can be used in a ‘fire and forget’ manner."

This Clang-based automatic code re-factoring is similar to how Google is trying to make C++ more fun.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
Latest Linux Hardware Reviews
  1. A Walkthrough Of The New 32 System Open-Source Linux Benchmarking Test Farm
  2. Habey MITX-6771: Mini-ITX Board With Quad-Core J1900 Bay Trail
  3. OCZ Vector 150 SSD On Linux
  4. Noctua i4 CPU Cooler: Great For Cooling High-End LGA-2011v3 CPUs
Latest Linux Articles
  1. AMD Kaveri: Open-Source Radeon Gallium3D vs. Catalyst 14.12 Omega Driver
  2. 12-Way AMD Catalyst 14.12 vs. NVIDIA 346 Series Linux GPU Comparison
  3. AMD Catalyst 14.12 Omega Driver Brings Mixed Results For Linux Users
  4. 6-Way Winter 2014 Linux Distribution Comparison
Latest Linux News
  1. An Open Hardware Random Number Generator Proposed
  2. LLVM 3.6 Will Be Branched Next Month
  3. Opera Browser Puts Out Linux Updates For The Holidays
  4. GNOME Shell 3.15.3 Adds Support For High-Contrast Themes
  5. Linux 3.19: ThinkPad Muting Redone, New Dell Backlight Support, Acer Is Banging
  6. KVM Drops Support For IA64 While Adding Various x86 Improvements
  7. GCC 4.8.4 Officially Released
  8. FSF's High Priority Project List Now Has A Committee
  9. Details On Using OpenACC & GPUs With GCC
  10. Ubuntu 15.04 Alpha 1 For Its Various Flavors
Latest Forum Discussions
  1. Need some hand holding with upgrading xserver
  2. Debian init discussion in Phoenix Wright format
  3. The New SuperTuxKart Looks Better, But Can Cause GPU/Driver Problems
  4. XLennart: A Game For Systemd Haters With Nothing Better To Do
  5. FPS capped on Linux (AMD fglrx drivers)
  6. Are there an app using HSA ?
  7. Bench specific mount point
  8. Tool for measuring FPS in games