Multithreaded build sometimes fails

[mheyer32]

A fresh build sometimes fails for me like shown below:

matze@ubuntu-VirtualBox:~/amigatoolchain/amiga-gcc$ make all -j8 PREFIX=/home/matze/amigatoolchain/amiga-gcc-out
make vbcc dtgen...done
unpack vbcc_target_m68k-amigaos...done
run vbcc dtgen...done
unpack ndk...done
patch ndk...done
configure fd2sfd...done
copying vbcc headers...done
copying vbcc headers...done
configure sfdc...done
creating vbcc config...failed
install: target ‘/home/matze/amigatoolchain/amiga-gcc-out/bin/’ is not a directory: No such file or directory
creating vbcc config...failed
less "log/creating vbcc config.log"
configure binutils... make fd2sfd... make ira... make vlink... make vbcc... make vasm...Makefile:562: recipe for target 'build-Linux/vbcc_target_m68k-amigaos/_done' failed
make: *** [build-Linux/vbcc_target_m68k-amigaos/_done] Error 1
make: *** Waiting for unfinished jobs....
make ira...done
make fd2sfd...done
make vbcc...done
install vbcc...done
make vlink...done
install vlink...done
make vasm...done
install vasm...done
configure binutils...done

[bebbo]

please test

[mheyer32]

I tried it once and it seemed to work. Thanks!
Closing for now.