diff --git a/.travis.yml b/.travis.yml
index 7bbbdfb1a..da3381bdc 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,7 @@ compiler:
 script: s/travis-build
 before_install:
   - sudo apt-get update -qq
-  - sudo apt-get install -qq libtolua-dev liblua5.1-dev libncurses5-dev libsqlite3-dev libxml2-dev valgrind
+  - sudo apt-get install -qq zlib1g-dev libtolua-dev liblua5.1-dev libncurses5-dev libsqlite3-dev libxml2-dev valgrind
 os:
   - linux
   - osx
diff --git a/s/travis-build b/s/travis-build
index e8643f87e..51a501c15 100755
--- a/s/travis-build
+++ b/s/travis-build
@@ -1,31 +1,61 @@
 #!/bin/sh
 
+set -e
+ROOT=`pwd`
 MACHINE=`uname -m`
 [ -z "$CC" ] && [ ! -z `which gcc` ] && CC="gcc"
 [ -z "$CC" ] && [ ! -z `which tcc` ] && CC="tcc"
 [ -z "$CC" ] && [ ! -z `which cc` ] && CC="cc"
-BUILD="build-$MACHINE-$CC-Debug"
+BUILD="$ROOT/build-$MACHINE-$CC-Debug"
 
 inifile() {
+cd $ROOT
 if [ ! -e eressea.ini ]; then
 cp conf/eressea.ini .
 $BUILD/iniparser/inifile eressea.ini add lua:paths lunit:scripts
 fi
 }
 
+build() {
+cd $BUILD
+cmake -DCMAKE_MODULE_PATH=$ROOT/cmake/Modules -DCMAKE_BUILD_TYPE=Debug ..
+make
+}
+
 test_valgrind_report () {
 cd tests
 ln -sf ../scripts/config.lua
-valgrind ../$BUILD/eressea/eressea -v0 -t184 ../scripts/reports.lua
+valgrind $BUILD/eressea/eressea -v0 -t184 ../scripts/reports.lua
 }
 
+test_unittests() {
+$BUILD/eressea/test_eressea
+}
+
+cleanup() {
+cd $ROOT/tests
+rm -rf reports score eressea.log* config.lua
+}
+
+test_server() {
+cd $ROOT
+inifile
+$BUILD/eressea/eressea -v0 scripts/run-tests.lua
+$BUILD/eressea/eressea -v0 scripts/run-tests-e2.lua
+$BUILD/eressea/eressea -v0 scripts/run-tests-e3.lua
+}
+# information
+echo "* base directory: $ROOT"
+echo "* build directory: $BUILD"
+echo "* zlib1g-dev package:"
+dpkg -l zlib1g-dev
+echo
+
+# build the code
 [ -d $BUILD ] || mkdir $BUILD
-cd $BUILD && cmake .. \
- -DCMAKE_MODULE_PATH=$PWD/../cmake/Modules \
- -DCMAKE_BUILD_TYPE=Debug .. && \
-make && cd .. && inifile &&
-$BUILD/eressea/test_eressea &&
-$BUILD/eressea/eressea -v0 scripts/run-tests.lua &&
-$BUILD/eressea/eressea -v0 scripts/run-tests-e2.lua &&
-$BUILD/eressea/eressea -v0 scripts/run-tests-e3.lua &&
+build
+test_unittests
+test_server
 test_valgrind_report
+
+cleanup