Fixed it?

build_dist.sh

 #!/bin/sh
 buildDir=$1
 
-set -x
-
 # fancy shit: no wildcards in automake, add all files to be distributed with BOXMOX/KPP explicitly
 cp Makefile.am_BLUEPRINT Makefile.am
 

configure.ac

@@ -4,7 +4,7 @@ dnl Finally run make to generate the project.
 
 AC_INIT([boxmox], [1.8], [christoph.knote@med.uni-augsburg.de])
 dnl we use the build type foreign here instead of gnu because I do not have a NEWS file and similar, yet.
-AM_INIT_AUTOMAKE([-Wall foreign tar-ustar])
+AM_INIT_AUTOMAKE([-Wall foreign tar-pax])
 AC_PROG_CC
 AC_PROG_LEX(noyywrap)
 AC_PROG_YACC