--- a/doc/manual/manual_overview.tex	Sat May 13 23:02:17 2017 +0200
+++ b/doc/manual/manual_overview.tex	Sun May 14 00:19:15 2017 +0200
@@ -178,3 +178,10 @@
 \caption{Supported platforms}%
 \end{table}
 
+\subsection{Build Requirements}
+
+The library needs at least a c99 compiler with additional support for anonymous
+structs/unions (which were introduced officially in c11). Given that those are
+generally supported by pretty much all major c99 conforming compilers (as
+default extension), it should build fine with a c99 toolchain.
+