Sunday, March 27, 2016

Resolution of historic photographs in examples, part 1

As everyone knows, historic photographs are full of lovely and important details. Well, at least everyone who had paid enough attention to explore an original or had chance to see a quality scan. In 19th century photographs was not enlarged and the prints matched the size of negatives. Even small CDVs was intended to be viewed with care under a magnifying glass.

Friday, March 25, 2016

Lost notebook

My lovely notebook Lenovo X240 Serial Number PF0088FT was lost in Prague, Mar 24 2016. If you find it and contact me at, I would be extremely grateful.

UPDATE: I got the notebook back from police this week :)

Friday, March 18, 2016

Building libreoffice with GCC 6 and LTO

New GCC is just around the corner. For me, as a GCC developer, this means a period of bugfixing, benchmarking and fine-tuning. Two years ago I wrote about my experiment  of building libreoffice with link time optimization (LTO). At that time LTO just got into shape of being able to build such large applications. Since that I am keeping my eye on this and try to be sure LTO keeps improving. I did not have time to publish any tests for GCC 5. Here is update for current trunk of GCC 6 compared to GCC 4.9.0, GCC 5.3, LLVM 3.5 and trunk.