add ubuntu package to INSTALL

diff --git a/INSTALL b/INSTALL
index 78ca13ad0f3ad7f440220953e5882c93c55ea4ac..4c1bd17c54dd9096a58be46d8a1bdb08a6d8870b 100644 (file)
--- a/INSTALL
+++ b/INSTALL
@@ -8,7 +8,7 @@ Install Prerequisites
 been ported to Xerces 3. For Debian or Ubuntu, the required packages
 can be installed with the following
 
 been ported to Xerces 3. For Debian or Ubuntu, the required packages
 can be installed with the following
 

-$ sudo apt install wget build-essential libx11-dev libxerces-c-dev
+$ sudo apt install wget build-essential libx11-dev libxerces-c-dev libxext-dev

 
 2. Run the following command
 
 
 2. Run the following command