[vlc-devel] [PATCH] contrib: add a bootstrap option to allow using prebuilt packages when cross-compiling

[Rémi Denis-Courmont]

Le dimanche 2 février 2020, 14:02:16 EET Alexandre Janniaux a écrit :
> > There are no valid reasons to disable pkg-config if it is correctly set
> > (i.e., to the correct platform/directories). It won't find what's nowhere
> > to be found. To take the extreme, if you wanted to compile VLC for bare
> > (which won't work as is), you would anyway have the dedicated
> > arm-none-... triplets, and you wouldn't hit any "wrong" packages.
> 
> For instance, I build for (linaro-)aarch64-linux-gnu which
> might become the same triplet name as raspberry one day,
> and have /usr/aarch64-linux-gnu/ on my machine.

And then what? If you need a different SDK with the same triplet, you have th 
same cross-tool names, so you need a different directories prefix. pkg-config 
makes no difference here: first and foremost, you need to point to the correct C 
compiler and C headers and run-time libraries.

Just like if you *natively* build for a different distro.

Point being, this has nothing to do with pkg-config and nothing to do with 
cross-compilation, and thus I don't see why there should be a cross-
compilation-specific pkg-config-specific flag for that.

-- 
Rémi Denis-Courmont