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+<sect2>
+<title>Command explanations</title>
+
+<para><userinput>CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE": </userinput>
+Adding <userinput>-D_GNU_SOURCE</userinput> command before
+we configure patch fixes installation of the package on PPC and m68k
+platforms (that we know of). It also doesn't hurt compilation on other
+platforms (such as x86) so we do it by default.</para>
+
+</sect2>
+