This issue was fixed in 1.4.2 via this commit: https://github.com/synfig/synfig/commit/e68ca6ff55a6d6f86220d187bc5df27633382397
- Bug#1007167: _clock_system.h:34:27: error: using-dec... Mathieu Malaterre
- Bug#1007167: Acknowledgement (_clock_system.h:3... Mathieu Malaterre
- Bug#1007167: Already fixed upstream Rodolfo Ribeiro Gomes