diff --git a/configure.in b/configure.in
index 0128197..0b30653 100644
--- a/configure.in
+++ b/configure.in
@@ -99,7 +99,7 @@ AC_SUBST_FILE(README)
 CHANGE_LOG=ChangeLog
 AC_SUBST_FILE(CHANGE_LOG)
 
-AM_CPPFLAGS="-DPACKAGEVERSION='\"${VERSION}\"' -DPACKAGENAME='\"${PACKAGENAME}\"'"
+AM_CPPFLAGS="-DPACKAGEVERSION='\"${VERSION}\"' -DPACKAGENAME='\"${PACKAGENAME}\"' -I/usr/include/libcwd"
 
 # Get rid of that stupid -O2 -g opions!
 CXXFLAGS="${CXXFLAGS:-}"
@@ -200,14 +200,15 @@ if test "$have_stacktrace" = "yes"; then
                   [AC_MSG_WARN([Header "demangle.h" from the binutils not found!
  - unfortunately, the bintils do not install this header
    (even though they should)
+ - if available, install package libcwd (Ubuntu since 13.04 Trusty)
  - the required symbols are now declared in stacktrace.cxx according to my
    own binutils version (binutils-2.16.1) it may or may not be compatible to
    yours])])
-  AC_SEARCH_LIBS(cplus_demangle, [demangle iberty_pic iberty],
+  AC_SEARCH_LIBS(cplus_demangle, [demangle iberty_pic iberty cwd],
                  [AC_MSG_RESULT([OK, found cplus_demangle])],
 [AC_MSG_ERROR([Function cplus_demangle not found!
- - I looked in libdemangle and libiberty
- - Try "ls -l /usr/lib/libdemangle* /usr/lib/libiberty*"
+ - I looked in libdemangle, libiberty and libcwd
+ - Try "ls -l /usr/lib/libdemangle* /usr/lib/libiberty* /usr/lib/libcwd*"
     - is one of them installed?
        - If yes, try: "nm <filename> | grep cplus_demangle"
           -> is the symbol defined?
@@ -302,6 +303,8 @@ AC_SUBST(PACKAGENAME)
 AC_SUBST(AM_CXXFLAGS)
 AC_SUBST(AM_CPPFLAGS)
 AC_SUBST(LIBS)
+DISTCHECK_CONFIGURE_FLAGS="$(env)"
+AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)
 
 # create output
 AC_OUTPUT
diff --git a/src/mrw/checkcxx11.hxx b/src/mrw/checkcxx11.hxx
index 9306bab..7017ee7 100644
--- a/src/mrw/checkcxx11.hxx
+++ b/src/mrw/checkcxx11.hxx
@@ -8,6 +8,7 @@
 #ifndef __MRW__CHECKCXX11__
 #define __MRW__CHECKCXX11__
 
+
 // check if code is compiled with a new C++11 compiler
 // otherwise there is a fallback wich makes everything much more compliacted
 #  ifndef MRW__OLD_PRE11_COMPILER
diff --git a/test/makefile.am b/test/makefile.am
index 3b2179b..875667b 100644
--- a/test/makefile.am
+++ b/test/makefile.am
@@ -188,4 +188,5 @@ endif
 check_PROGRAMS = $(VALGRIND_CHECKS) $(NO_VALGRIND_CHECKS)
 
 CLEANFILES = 
+DISTCLEANFILES = configfile2.ini
 MAINTAINERCLEANFILES = makefile.in