diff --git a/travis/build.sh b/travis/build.sh
index a1b5d89..98052d0 100755
--- a/travis/build.sh
+++ b/travis/build.sh
@@ -4,6 +4,15 @@ set -e
 # Set VV in .travis.yml to make scripts verbose
 [ "$VV" ] && set -x
 
+CACHEDIR="$HOME/.cache"
+
+eval $(grep "EPICS_BASE=" ${CACHEDIR}/RELEASE.local)
+export EPICS_BASE
+
+[ -z "$EPICS_HOST_ARCH" -a -f $EPICS_BASE/src/tools/EpicsHostArch.pl ] && EPICS_HOST_ARCH=$(perl $EPICS_BASE/src/tools/EpicsHostArch.pl)
+[ -z "$EPICS_HOST_ARCH" -a -f $EPICS_BASE/startup/EpicsHostArch.pl ] && EPICS_HOST_ARCH=$(perl $EPICS_BASE/startup/EpicsHostArch.pl)
+export EPICS_HOST_ARCH
+
 make -j2 $EXTRA
 
 if [ "$TEST" != "NO" ]
diff --git a/travis/prepare.sh b/travis/prepare.sh
index fed3739..e04a910 100755
--- a/travis/prepare.sh
+++ b/travis/prepare.sh
@@ -49,10 +49,12 @@ fold_end check.out.dependencies
 fold_start set.up.epics_build "Setting up EPICS build system"
 
 eval $(grep "EPICS_BASE=" ${CACHEDIR}/RELEASE.local)
+export EPICS_BASE
 echo "EPICS_BASE=$EPICS_BASE"
 
 [ -z "$EPICS_HOST_ARCH" -a -f $EPICS_BASE/src/tools/EpicsHostArch.pl ] && EPICS_HOST_ARCH=$(perl $EPICS_BASE/src/tools/EpicsHostArch.pl)
 [ -z "$EPICS_HOST_ARCH" -a -f $EPICS_BASE/startup/EpicsHostArch.pl ] && EPICS_HOST_ARCH=$(perl $EPICS_BASE/startup/EpicsHostArch.pl)
+export EPICS_HOST_ARCH
 echo "EPICS_HOST_ARCH=$EPICS_HOST_ARCH"
 
 if echo ${modules_to_compile} | grep -q "$EPICS_BASE"