On Mon, Jan 18, 2021 at 11:58:40AM +0000, Ferruh Yigit wrote: > On 1/18/2021 10:51 AM, Bruce Richardson wrote: > > On Fri, Jan 15, 2021 at 06:40:56PM +0000, Ferruh Yigit wrote: > > > On 12/21/2020 2:04 PM, Bruce Richardson wrote: > > > > 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. > > > > > > > > > > The 'PKG_CONFIG_LIBDIR' seems not taken into account by meson, Akhil > > > reported a 32bit build error when zlib is missing, I can reproduce the > > > same. > > > > > > I have only 64bit version of the library: > > > > > > $ pkg-config --path zlib > > > /usr/lib64/pkgconfig/zlib.pc > > > > > > $ PKG_CONFIG_LIBDIR=/usr/lib/pkgconfig/ pkg-config --path zlib > > > <no output> > > > $ echo $? > > > 1 > > > > > > When I run the meson as following: > > > "PKG_CONFIG_LIBDIR=/usr/lib/pkgconfig/ meson --werror -Dc_args=-m32 > > > -Dc_link_args=-m32 -Dexamples=all build32" > > > > > > It still detects the zlib: > > > Run-time dependency zlib found: YES 1.2.11 > > > > > > > I've just tried this on my system and it works as expected: the 32-bit lib > > is not found and a build succeeds. Omitting the PKG_CONFIG_LIBDIR and it is > > found, but linking fails due to "file in wrong format" errors, again as > > expected. > > > > In your case, I suspect it might be meson falling back to cmake in the > > detection logic. If you have cmake installed on your system, can you > > perhaps temporarily remove it, and retry the 32-bit build? If that is the > > cause, we can modify the dependency call to add "method: 'pkg-config'" to > > it, to force pkg-config searches only. > > > > Yes I have cmake, I will try without it. > > Meanwhile I have Fedora, and it seems it is using different version of the > pkg-config (pkgconf), not sure if this can be a problem. > pkgconf as pkg-config is fairly normal, and is not a problem.
I think I'll pre-emptively do up a patch to force pkg-config use for all our dependency() calls. I believe that everything we call "dependency()" for in meson supports pkg-config. /Bruce
