add check for certtool

1 files changed, 6 insertions, 1 deletions

diff --git a/src/gns/gnunet-gns-proxy-setup-ca b/src/gns/gnunet-gns-proxy-setup-ca
index d0b07887b..5686e37f7 100644
--- a/src/gns/gnunet-gns-proxy-setup-ca
+++ b/src/gns/gnunet-gns-proxy-setup-ca
@@ -2,8 +2,13 @@
 # This shell script will generate an X509 certificate for your gnunet-gns-proxy
 # and install it (for both GNUnet and your browser).
 #
-echo "Generating CA"
+if ! which certtool > /dev/null
+then
+  echo "'certtool' command not found. Please install it."
+  exit 1
+fi
 
+echo "Generating CA"
 options=''
 while getopts "c:" opt; do
   case $opt in