Frequently Asked Questions
...and their answers
Sections: Building · Features · Upgrading · Miscellaneous
Which operating systems are supported?
Libosmium and other related software on this site is developed on Linux and works well there. With tiny exceptions everything also works on macOS out of the box. Most software also works on Windows. A CMake configuration which should work on all operating systems is supplied for all projects.
I can't find out how to build the Osmium Library?
The C++ Osmium Library is a header-only library. You dont' have to build it. Just install the header files and include them as needed from your code.
Which build system is used?
We are using CMake.
Can Osmium work with OSM history files? Change files? Changesets?
Yes. They are all supported. See the manual for details.
Can Osmium do Coordinate Transformations?
Yes. Osmium has builtin support for the OSM native format WGS84 (EPSG 4326) and Web Mercator (EPSG 3857). It can also use the PROJ.4 library to transform to about any coordinate reference system out there.
What is the difference between "old" and "new" Osmium?
The "old" Osmium was developed from 2010 to 2013. With the experience gained and with the new possibilities of C++11 we started on the "new" Osmium in 2013, a more or less complete rewrite of the C++ Osmium Library. Today the "new" Osmium Library has all the functionality of the old one plus a lot more.
The old Osmium is still available from github.com/joto/osmium, but it is in maintainance mode, ie no new functionality will be added.
Unless you don't have a C++11 capable compiler, we recommend using the "new" osmium available from this web site.
Where is "osmjs"?
Wait, I am confused! Is Osmium a library or a program or what?
The old version of the Osmium Library was also just called "Osmium".
I don't want to program in C++. Can I use Osmium from other languages?
If you are interested in making Osmium available in other languages, come talk to us.