master 5fae032587: Tell those using exclusively X not to use the PGTK port

[Sean Whitton]

branch: master
commit 5fae0325872710dcbf42541b985103b66f613f61
Author: Sean Whitton <spwhitton@spwhitton.name>
Commit: Sean Whitton <spwhitton@spwhitton.name>

    Tell those using exclusively X not to use the PGTK port
    
    * INSTALL (Alternative window systems): Tell those using exclusively X
    not to use the PGTK port.
---
 INSTALL | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/INSTALL b/INSTALL
index b1e3c72c4b..f2687225da 100644
--- a/INSTALL
+++ b/INSTALL
@@ -243,6 +243,11 @@ This build is only supported with GTK+ version 3, and it 
is an error
 to specify any other X-specific configuration option when PGTK is
 enabled.
 
+If you use exclusively X, do not use the PGTK port.  There are a
+number of respects in which the regular --with-x-toolkit=gtk build
+works better.  The PGTK port should not be considered a simple upgrade
+from --with-x-toolkit=gtk.
+
 With the PGTK build, you will be able to switch between running Emacs
 on X, Wayland and Broadway using the 'GDK_BACKEND' environment
 variable.  GTK+ should automatically detect and use the correct value