diff --git a/template/configure.template b/template/configure.template
index 78d4a1d..5b8315b 100644
--- a/template/configure.template
+++ b/template/configure.template
@@ -7,6 +7,7 @@
 prefix=/usr/local
 required_version_python=3.6
 required_version_pyqt=5.0
+required_soname_cbox=libcalfbox-lss.so.1
 
 
 for arg in "$@"; do
@@ -38,6 +39,8 @@ echo "Checking Dependencies. No output is good"
 
 function version_gt() { test "$(printf '%s\n' "$@" | sort -V | head -n 1)" != "$1"; }
 
+ldconfig -p | grep $required_soname_cbox >/dev/null 2>&1 || { echo "$required_soname_cbox required, but it's not installed. Aborting."; exit 1; }
+
 command -v python3 >/dev/null 2>&1 || { echo >&2 "Python3 >= $required_version_python  is required but it's not installed.  Aborting."; exit 1; }
 PY3VERSION=$(python3 -c 'import platform; print(platform.python_version())')
 if version_gt $required_version_python $PY3VERSION; then echo "Python3 must be version >= $required_version_python but is $PY3VERSION. Aborting."; exit 1; fi