build: require gcc >= 5.3 and boost >= 1.58
This effectively drops support for all versions of Ubuntu older than 16.04
Change-Id: If1c96cc697d38a94588f126a89d13ec8e582702d
Refs: #4462
diff --git a/docs/INSTALL.rst b/docs/INSTALL.rst
index 8d4f08b..ff2ad51 100644
--- a/docs/INSTALL.rst
+++ b/docs/INSTALL.rst
@@ -23,7 +23,7 @@
Install NFD Using the NDN PPA Repository on Ubuntu Linux
--------------------------------------------------------
-NFD binaries and related tools for Ubuntu 14.04 and 16.04 can be installed using PPA
+NFD binaries and related tools for Ubuntu 16.04 and 18.04 can be installed using PPA
packages from named-data repository. First, you will need to add ``named-data/ppa``
repository to binary package sources and update list of available packages.