[65-libyang-gcc-requirement] Updated

diff --git a/doc/guide/netconf.xml b/doc/guide/netconf.xml
index 2adcbb5390903a51be90fda3f5d17df0d87f9013..ecf9dfd087af4b8ec49a880a1519ff2d088fde71 100644 (file)
--- a/doc/guide/netconf.xml
+++ b/doc/guide/netconf.xml
@@ -57,6 +57,10 @@ $ sudo apt-get install git cmake build-essential bison flex libpcre3-dev libev-d
     <link xmlns:xlink="http://www.w3.org/1999/xlink"
           xlink:href="https://github.com/CESNET/libyang" /></para>
 
+    <para<Please note that libyang building requires a gcc version at
+    least 4.9 so on some environments like CentOS 7.5 the system
+    compiler cannot be used.</para>
+
     <para>STEP 3. Install syrepo. Download sysrepo from
     <link xmlns:xlink="http://www.w3.org/1999/xlink"
           xlink:href="https://github.com/sysrepo/sysrepo/releases" />.