Added missing prerequisites to README

diff --git a/README b/README
index d90a11935576a4818c396191f7f67b0da8f6fd6e..058208e9d4a03390e66982e923b3b40dfe1789c8 100644 (file)
--- a/README
+++ b/README
@@ -56,7 +56,8 @@ For example on Ubuntu Linux 14.04 LTS the following commands will install all
 prerequisites for building yosys:
 
        $ yosys_deps="build-essential clang bison flex libreadline-dev
-                     tcl8.5-dev libffi-dev git mercurial graphviz xdot"
+                     tcl8.5-dev libffi-dev git mercurial graphviz xdot
+                     gawk pkg-config"
        $ sudo apt-get install $yosys_deps
 
 There are also pre-compiled packages for Yosys on Ubuntu. Visit the Yosys