Bug#773329: Incorrect Cflags line in jack.pc

[Ted Felix]

On 04/19/2015 09:10 AM, Adrian Knoth wrote:
>> The cflags from pkg-config for jack are incorrect which breaks makefiles
>> and configure scripts that depend on them (e.g. those for rosegarden).
> I tend to disagree - more likely, rosegarden is broken, because a ton of
> other software that relies on jackd compiles just fine.

   It appears that the issue is that rosegarden is using 
PKG_CHECK_MODULES() when it should be using AC_CHECK_LIB().  I just 
tried AC_CHECK_LIB() and it works fine.  I'll get it into the next 
release of rosegarden.

>>    Cflags: -I/usr/include
>>
>> ...should be this:
>>
>>    Cflags: -I${includedir} -I${includedir}/jack
> No, -I/usr/include is correct, because the appropriate include is
>
> #include <jack/jack.h>

   I thought this too, but actually the issue is a quirk in the way 
pkg-config works.  The Cflags line in the .pc file has to follow a very 
specific and strange format (shown above) for PKG_CHECK_MODULES() to 
work.  It's really quite bizarre and perplexing.  AC_CHECK_LIB() is much 
more reliable.

> So wontfix?

   I agree.