diff --git a/general/sysutils/gpm/gpm-inst.xml b/general/sysutils/gpm/gpm-inst.xml
index bc4ee88920..c56e473a0f 100644
--- a/general/sysutils/gpm/gpm-inst.xml
+++ b/general/sysutils/gpm/gpm-inst.xml
@@ -3,8 +3,22 @@
 
 <para>Install gpm by running the following commands:</para>
 
-<para><screen><userinput>./configure --prefix=/usr &amp;&amp;
+<note><para>The LDFLAGS environment variable must be set before
+    configuring gpm.</para></note>
+    
+<para><screen><userinput>export LDFLAGS="-lm" &amp;&amp;
+./configure --prefix=/usr &amp;&amp;
 make &amp;&amp;
 make install</userinput></screen></para>
 </sect2>
 
+
+<sect2>
+<title>Command explanations</title>
+
+<para><userinput>export LDFLAGS="-lm": </userinput>The math library
+ must be linked with gpm, as ceil() is used in some cursor scrolling
+ logic.</para>
+
+</sect2>
+