Thursday, 27 April 2017

Zapcc 1.0.1

Hi folks,

following the test I did last year about zapcc, a very fast C++ compiler with a very effective in memory cache which gives benefits to large C++ code bases, there is a new released version 1.0.1 available here. Since the beta version the zapcc's server which holds the caching feature seems more stable/reliable.

This version is based now on clang 5.0.0 which is in fact a specific version of the related subversion trunk version I believe since only the 4.x serie is released.

First little "glitch", since the last test, I moved on from Linux mint to Arch Linux recently, the ncurses version shipped with does not have libtinfo shared library which zapcc/clang needs ... I do not know if it is a strong requirement of Zapcc or maybe LLVM could be compiled without terminfo support as a fix.

Apart of this little detail, zapcc delivers all its promises ! Like last time I made a test with one of my preferred C++ open source softwares, LMMS. This time I configured zapcc a bit differently. Since I run the test inside a virtualized ubuntu's environment, I set the memory per process according to the RAM limits I put and since I ll use two parallel jobs at best ...

This time also I will not cache auto generated headers and c++ files of LMMS and its plugins

Now, it is time to test against vanilla clang with two jobs. This is the general compilation time I get

And with zapcc

Since there is already a noticeable difference in this reasonable sized project, you can be insured in larger C++ code base, which is very common in C++ world, the delta is even beyond where you can see more than 3 times the speed. In my case I may have gotten a bigger difference if the cache memory limit was significantly bigger but it is actually fair enough as it is. Bear in mind though that zapcc is beneficial to C++ projects despite zapcc existence, for C code the usual ccache's solution is generally sufficient.

Hopefully, the mac OS and the Windows versions will be released in a reasonable near future.

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Wednesday, 26 April 2017

Little updates

Hi folks,

Since the last time, few things were happening, OpenBSD 6.1 has been released, the list of the changes is quite impressive, now the next 6.2 version will be promising ! In a developer point of view, recently clang is built when the base system is compiled (aarch64 only at the moment). Not yet ready to be used as main compiler but it is coming ;-)

In a more personal point of view, I had pushed few fixes for few softwares, tmux (changes available straight in OpenBSD current anyway), bullet3 and a little bit opencv ...

Apart of this I ve taken a more active part in the BSD Dublin Group Meetup, there will be my small speech. There are other things ongoing I ll let you know in due time ;-)

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