[dpdk-dev] meson: wrong dependency in cross compilation on ARM

[Bruce Richardson]

On Mon, Dec 21, 2020 at 02:28:42PM +0000, Hemant Agrawal wrote:
> 
> > -----Original Message-----
> > From: dev <dev-bounces at dpdk.org> On Behalf Of Bruce Richardson
> > 
> > On Mon, Dec 21, 2020 at 12:19:17PM +0000, Hemant Agrawal wrote:
> > > Hi,
> > >                 I am trying to cross compile DPDK for arm64 on a ubuntu machine,
> > which has a zlib pre-installed for native env.
> > >
> > > I am encountering following build error in net_bnx2x as it has dependency
> > on zlib.  It is trying to link with x86 arch based zlib.
> > >
> > > Cross compiling zlib and setting the PKG_CONFIG_PATH solve the issue.
> > But, Is their an easy way to disable these dependencies?
> > >
> > Can you try with setting PKG_CONFIG_LIBDIR rather than
> > PKG_CONFIG_PATH?
> > PKG_CONFIG_PATH simply extends the search locations, which means that
> > host-paths will still be searched, while PKG_CONFIG_LIBDIR replaces the
> > default path, eliminating the host-based search paths.
> 
> [Hemant] I will try. 
> 
> Also, is there a way to disable certain drivers (e.g. bnx2x) and libraries (e.g. compress) in meson config file statically, so that they don't get build.
> Using disable_driver options is still not working as the dpdk-test has dependency on zlib. 
> 
No support to disable libraries has been put in place yet, but the autotest
binary should be possible to disable using the "tests" build time option
(and as you already know individual drivers can be disabled too).
Setting PKG_CONFIG_LIBDIR to a new location should for all these cases
prevent detection of the host-installed zlib-dev package.

/Bruce