[Xcb] [Bug 74727] Some of libxcb's .pc files don't list all dependencies as "Requires:"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=74727

Uli Schlachter <psychon at znc.in> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Mesa 10.1: doesn't build    |Some of libxcb's .pc files
                   |with DRI3 enabled           |don't list all dependencies
                   |                            |as "Requires:"

--- Comment #5 from Uli Schlachter <psychon at znc.in> ---
There are more dependencies than just "present needs randr" that are missing.

The following hack greps each XML extension description for <import> tags and
checks if the corresponding .pc.in file contains the correct dependency (And
yes, the code generator turns <import> into an include in the public header so
these dependencies do exist):

$ for xml in  ../proto/src/*xml ; do ext=$(basename --suffix=.xml $xml) ; grep
'<import' $xml | sed -e 's/<[^>]*>\|[\t ]*//g' | grep -v xproto | while read
dep ; do grep -q "xcb-$dep" xcb-$ext.pc.in || echo " $ext depends on $dep, but
xcb-$ext.pc.in doesn't list this!" ; done ; done
 present depends on randr, but xcb-present.pc.in doesn't list this!
 present depends on xfixes, but xcb-present.pc.in doesn't list this!
 present depends on sync, but xcb-present.pc.in doesn't list this!
 randr depends on render, but xcb-randr.pc.in doesn't list this!
 xinput depends on xfixes, but xcb-xinput.pc.in doesn't list this!

I guess the best way to fix this would be to have the generation of the .pc.in
files somehow be wired up to the code generator so that these kind of things
are done automatically. Sadly the .pc.in files are needed by ./configure and
thus cannot be easily generated from make...

Alternatively, "make check" could be extended to do something like the above,
but in a less hackish way.

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