[FFmpeg-devel] [PATCH] Use pkg-config for libschroedinger libs

JonY 10walls
Mon May 12 19:24:20 CEST 2008

Ramiro Polla wrote:
> Reimar D?ffinger wrote:
>> On Mon, May 12, 2008 at 05:13:04PM +0100, Ramiro Polla wrote:
>>>>>>> also pkg-config is used in the line above for cflags,
>>>>>>> the patch just fixes one missing use of pkg-config
>>>>>> Two wrongs don't make a right.
>>>>> just pointing it out, leaving it like it is now sure is the worst
>>>>> solution.
>>>>> a) use pkg-config and use it in all cases
>>>>> b) dont use pkg-config at all
>>>>> the patch fixes configure to conform to a)
>>>>> you propose b) instead?
>>>>> what are those systems without pkg-config if i may ask?
>>>> That's irrelevant. As long as pkg-config isn't mandated by
>>>> POSIX, we should assume it might not be there.
>>> We should get rid of memalign() too. After all, it's not POSIX...
>> Huh? FFmpeg already works without memalign. And there is even a hack
>> that allows even the assembler optimizations to work without it.
> Well, then it should be a configure option:
> ./configure --enable-memalign
>> So to me it seems your example actually confirms Mans' opinion?
>> Also I think there is no problem to _also_ try pkg-config, but depending
>> on it really is not a great thing - also as it encourages projects using
>> pkg-config to do sloppy dependency-managment.
> Good idea. It doesn't take an extraordinary amount of time and effort to
> come up with an idea like attached patch.
> [...]
> Ramiro Polla

Problem is add_cflags still depends on pkg-config for proper cflags. The 
libschroedinger headers will not work properly without the correct cflags.

Maybe configure should check for pkg-config earlier and determine how to 
proceed if its not installed.

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