I found that svn doesn't commit my .o files by default. I've checked dir attributes - no any .o specific rules was found.
Is there a list of files that svn do not commit by default, as .o?
Look at global-ignores in your configuration file.
The standard location of this file on a *nix system will be ~/.subversion/config.
SVN only commits the files that you svn add first. If you did not run svn add on an *.o file (and this is usually the case because you would svn add the source files before the project is built) then it will be ignored.
来源：https://stackoverflow.com/questions/6502776/svn-doesnt-commit-o-files-but-why