[dpdk-dev] [PATCH 7/7] build/pkg-config: prevent overlinking

[Bruce Richardson]

On Wed, Apr 29, 2020 at 12:34:56PM +0200, Thomas Monjalon wrote:
> 29/04/2020 12:08, Bruce Richardson:
> > Add the --as-needed linker flag to the DPDK library list in the pkg-config
> > file so as to prevent overlinking. Without this flag, when linking
> > statically using flags from $(pkg-config --static --libs libdpdk), all DPDK
> > drivers and libs were statically linked in, but the binary was also
> > requiring all the shared versions be present to run.
> 
> I consider "--as-needed" as a workaround here.
> The root issue is that pkg-config does not distinguish clearly
> shared and static linkage, right?
> 
Yeah, pretty much. Improved static linking support in pkg-config would
really help with all this - and probably make much of this set unnecessary.
Unfortunately, how pkg-config works right now is how it works, and a change
to support what we want would be a fairly major change in functionality.

/Bruce