-<li><a href="http://xorg.freedesktop.org/releases/individual/proto/">
-dri2proto</a> version 2.6 or later
-<li><a href="http://dri.freedesktop.org/libdrm/">libDRM</a>
-version 2.4.33 or later
-<li>Xorg server version 1.5 or later
-<li>Linux 2.6.28 or later
+<li><a href="https://www.python.org/">Python</a> - Python is required.
+When building with scons 2.7 is required.
+When building with meson 3.5 or newer is required.
+When building with autotools 2.7, or 3.5 or later are required.
+</li>
+<li><a href="http://www.makotemplates.org/">Python Mako module</a> -
+Python Mako module is required. Version 0.8.0 or later should work.
+</li>
+<li>lex / yacc - for building the Mesa IR and GLSL compiler.
+<div>
+On Linux systems, flex and bison versions 2.5.35 and 2.4.1, respectively,
+(or later) should work.
+On Windows with MinGW, install flex and bison with:
+<pre>mingw-get install msys-flex msys-bison</pre>
+For MSVC on Windows, install
+<a href="http://winflexbison.sourceforge.net/">Win flex-bison</a>.
+</div>