tree 483587b53e2e2f37d5104462097b1a8fb3ff6056
parent 333e3ebfb537d5aca977478f363e5d32a74b7be5
author Davide Pesavento <davidepesa@gmail.com> 1646870197 -0500
committer Davide Pesavento <davidepesa@gmail.com> 1646870197 -0500

build: align minimum build dependencies with ndn-cxx

 * gcc 7.4
 * clang 6.0
 * Xcode 10.0 (11.3 or later recommended)

Also update waf to version 2.0.23

Change-Id: I893ac70b8a64ec4155bd416b2ac01e9b3ff0aa29