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Tell those using exclusively X not to use the PGTK port

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* INSTALL (Alternative window systems): Tell those using exclusively X
not to use the PGTK port.
This commit is contained in:
Sean Whitton 2022-04-18 19:43:32 -07:00
parent ace1f32ac1
commit 5fae032587
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INSTALL
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@ -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