add libx11-dev to INSTALL instructions

diff --git a/INSTALL b/INSTALL
index 3f44e160d209cb3e74306a8edb85f1b5fdb930fd..78ca13ad0f3ad7f440220953e5882c93c55ea4ac 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 build-essential libxerces-c-dev wget
+$ sudo apt install wget build-essential libx11-dev libxerces-c-dev

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