Bug#659212: /usr/bin/ocamlbuild.native: ocamlbuild reports fatal-error if -build-dir option is used with absolute filenames

[Hendrik Tews <tews@os.inf.tu-dresden.de>]

Hi,

I can reproduce the problem with vanilla 3.12.1 and 
3.13.0+dev11 (2012-01-26). I am preparing an upstream bug report
now.

   Sys_error("/home/andreas/projekte/leibniz/trunk/core//tmp/_build/_digests: No such file or directory")

   In the error-message you see, ocamlbuild will create a directory within
   my actual path, but not in given absolute path.

Well, the build directory is created in the right place. Only
when it wants to open _digest it concatenates the working
directory in a wrong way to the build dir. 

Bye,

Hendrik