Re: [Flightgear-devel] TerraSync libSVN replacement testing

[Alan T. <ajt...@v-...>]

What is the status of this on Windows 64 bit?

Up until now I have kept with 32 bit builds on Windows due to the lack of a 
64 bit version of libSvn.

Alan

-----Original Message----- 
From: James Turner
Sent: Tuesday, June 11, 2013 4:17 PM
To: FlightGear developers discussions
Subject: [Flightgear-devel] TerraSync libSVN replacement testing

Hi,

I've pushed some code to Git, which will ultimately replace our use of 
libSvn, and hence simplify build and deployment, especially on Mac and 
Windows. This has an immediate benefit for end-users too: TerraSync will use 
pretty much half the disk space it currently does, since unlike a real SVN 
client, we don't need to keep two copies of each file locally.

In the longer term, there are many other improvements I will make - to 
reduce the number of network round-trips to check directories are in sync, 
to improve the interaction with the main thread so the splash screen waits 
for terrasync to update a location before finalising position, and others. 
These things will happen *after* 2.12, and once the code is tested 
everywhere.

First, I need some help; for people to rebuild simgear 
with -DSG_SVN_CLIENT=1, and mv / erase their TerraSync dir. Then simply run 
FGFS as normal, as if you were starting on a new machine / account with no 
previous use of TerraSync.

(Remember that TerraSync initially syncs the large Models and Airports dirs, 
which takes some time - be patient. Also expect some nav-cache rebuilds 
since the nav-cache will see the paths / stat-times change. This is nothing 
to do with the revised code, simply what happens if you change your 
TerraSync dir)

If the testing is mostly positive, I will consider making the option default 
to ON for 2.12, but if people report problems (which cannot be easily 
fixed!), I will be cautious and leave it OFF by default for 2.12. Soon after 
2.12 branches, 'next' will be switched to using the new code exclusively.

(BTW, the option to use rsync or external, command-line svnclient still 
exists, and will be retained - though I am curious if anyone still uses 
those options!)

James
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