On 2012-08-06 at 03:49:36 [+0200], mmadia-github.separate-build-environment <community@xxxxxxxxxxxx> wrote: [...] > +/* special timezone support */ > +extern char *_haiku_build_tzname[2]; > +extern int _haiku_build_daylight; > +extern long _haiku_build_timezone; Those are variables, so you need to use _HAIKU_BUILD_DECLARE_CONSTANT (which should be renamed to *_VARIABLE, since there apparently also are non-constant variables). You'll even need an *_ETC version for the array. CU, Ingo