custom-epsg - Unable to build latest JOSM with ant

[TheOutpost]

I've checked out the latest commit on mirror on Github:

​https://github.com/openstreetmap/josm/commit/d977155fb5b1f54ab76140345633356475f7beee

Now, from a fresh checkout, I run ant. I get the following error:

epsg-compile:

[mkdir] Created dir: /Users/njh/code/josm/build2
[javac] Compiling 1 source file to /Users/njh/code/josm/build2

epsg:

[touch] Creating /Users/njh/code/josm/data/projection/custom-epsg

BUILD FAILED
/Users/njh/code/josm/build.xml:804: Could not create /Users/njh/code/josm/data/projection/custom-epsg

[Don-vip]

The Github mirror is not officially supported and often out of date. Please perform a standard SVN checkout as explained on Source code:

svn co https://josm.openstreetmap.de/svn/trunk josm

[TheOutpost]

Hi Vincent,

The issue is that a fresh checkout does not include the directory data/projection. If I mkdir data/projection before running ant, the build works.

[bastiK]

This happens because git does not support empty directories.

[anonymous]

Gotcha. I guess I could start using SVN... It's been years ; )

[bastiK]

Still, the github mirror can be fixed by placing an empty .gitignore file inside data/projection.