sdk-manual: Added note about nullpointer error for launch eclipse

Fixes [YOCTO #10714]

Apparently there is some issues with GTK3 libraries for the Mars
Eclipse version.  The note provides a workaround that requires
editing the eclipse.ini file.

(From yocto-docs rev: 89ace71c6d9d3a9db84bb9bb2b2abe4779a516f6)

Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 18 insertions, 0 deletions

diff --git a/documentation/sdk-manual/sdk-appendix-mars.xml b/documentation/sdk-manual/sdk-appendix-mars.xml
index 144e0720ae..521f682634 100644
--- a/documentation/sdk-manual/sdk-appendix-mars.xml
+++ b/documentation/sdk-manual/sdk-appendix-mars.xml
@@ -72,6 +72,24 @@
                     <listitem><para><emphasis>Launch Eclipse:</emphasis>
                         Double click the "Eclipse" file in the folder to
                         launch Eclipse.
+                        <note>
+                            If you experience a NullPointer Exception after
+                            launch Eclipse or the debugger from within Eclipse,
+                            try adding the following
+                            to your <filename>eclipse.ini</filename> file,
+                            which is located in the directory in which you
+                            unpacked the Eclipse tar file:
+                            <literallayout class='monospaced'>
+     --launcher.GTK_version
+     2
+                            </literallayout>
+                            Alternatively, you can export the
+                            <filename>SWT_GTK</filename> variable in your
+                            shell as follows:
+                            <literallayout class='monospaced'>
+     $ export SWT_GTK3=0
+                            </literallayout>
+                            </note>
                         </para></listitem>
                 </orderedlist>
             </para>