[BRLTTY] cannot install brltty 5.4 latest git on gentoo

[Dave Mielke]

[quoted lines by Chris Brannon on 2016/07/23 at 14:30 -0700]

>With the 0.8 series of Speech Dispatcher, all of the headers moved down
>into /usr/include/speech-dispatcher.
>This is also when the pkg-config file was added.
>The first convention was adopted, either implicitly or explicitly.
>With version 0.8.4, they added the library-specific subdirectory back to
>the include path, so you could do
>#include <libspeechd.h>
>once again, just like you could do in versions 0.7.x and prior, when
>there was only one header and it was under /usr/include.

So from 0.8 to just before 0.8.4 it's not backward compatible? If so, I'd say 
that that's a bug that they fixed in 0.8.4.

To me, including the subdirectory in the #include statement is better, but it's 
even more important to be backward compatible. That's probably why there are 
those two conventions.

Now that I'm looking at it, the Speech Dispatcher .pc file I was sent to test 
with is for 0.8.3, and contains:

   includedir=${prefix}/include/speech-dispatcher
   Cflags: -I${includedir}

To me, this is right as it's backward compatible. How else can generic 
configuration/source code keep it straight.

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