According to this thread www.finalbuilder.com/forum.aspx the translated versions of the RTL/VCL units should be used when a registry key is set using BDSSetLang.exe.
The problem is that this key is blanked when set to the current Windows language (DE in my case). As a consequence Finalbuilder seems to assume the English locale resulting in the wrong units compiled.
Is it possible that Finalbuilder provides a LANGDIR variable in any case and initializes it with the current Windows locale if no or an entry MUI entry is found?
This is a difficult one. There isn’t a 1 to 1 correlation between the windows local and the MUI entry. Currently the only way to detect which language to use is through the MUI entry. If you know of a better way I’m happy to try that.
If you add a project variable LANGDIR and set it to DE, finalbuilder will attempt to read the Translated Library Path from HKEY_CURRENT_USER\Software\CodeGear\BDS\7.0\Library (which by default is $(BDS)\lib$(LANGDIR) ).
During installation I also checked English, French and Japanese, but I usually work with the German version. Before I executed BdsSetLang for the first time the MUI key didn't even exist.