[dpdk-dev] Windows community call: MoM 2021-08-04

[William Tu]

[...]
> > Target machine cpu: x86_64
> > Pkg-config binary for MachineChoice.HOST is not cached.
> > Pkg-config binary missing from cross or native file, or env var undefined.
> > Trying a default Pkg-config fallback at pkg-config
> > Found pkg-config:
> > C:\ProgramData\chocolatey\lib\pkgconfiglite\tools\pkg-config-lite-0
> > .28-1\bin\pkg-config.EXE (0.28)
> > Determining dependency 'libdpdk' with pkg-config executable
> > 'C:\\ProgramData\\chocola
> > tey\\lib\\pkgconfiglite\\tools\\pkg-config-lite-0.28-1\\bin\\pkg-config.EXE'
> > env[PKG_CONFIG_PATH]:
> > Called `C:\ProgramData\chocolatey\lib\pkgconfiglite\tools\pkg-config-lite-0.28-1\bin\
> > pkg-config.EXE --modversion libdpdk` -> 1
> >
> > Run-time dependency libdpdk found: NO (tried pkgconfig)
> > ---
> > However, I copy the command and run it on powershell
> > PS C:\k8s-antrea-dpdk-win\ovs>
> > C:\ProgramData\chocolatey\lib\pkgconfiglite\tools\pkg-
> > config-lite-0.28-1\bin\pkg-config.EXE --modversion libdpdk
> > 21.08.0-rc1
> >
> > Yes, for example:
> > $env:PKG_CONFIG_PATH = 'C:\temp\DPDK\lib\pkgconfig'
> >
>
> Looking at the meson log, it appears that the PKG_CONFIG_PATH is empty for
> the meson call to pkg-config "env[PKG_CONFIG_PATH]:", which may explain why
> DPDK is not found. I suspect meson only uses the PKG_CONFIG_PATH from the
> environment on first run, but beyond that you can configure a
> PKG_CONFIG_PATH using a meson configuration option "-Dpkg_config_path". Can
> you try explicitly setting that in your build and see if it fixes it for
> you?

Hi Bruce,

It works, thanks a lot! I did
PS C:\k8s-antrea-dpdk-win\ovs> meson --reconfigure build
-Dpkg_config_path=C:\temp\dpdk\lib\pkgconfig\
Log below, if you're interested
----
The Meson build system
Version: 0.59.1
...
Pkg-config binary for MachineChoice.HOST is not cached.
Pkg-config binary missing from cross or native file, or env var undefined.
Trying a default Pkg-config fallback at pkg-config
Found pkg-config:
C:\ProgramData\chocolatey\lib\pkgconfiglite\tools\pkg-config-lite-0.28-1\bin\pkg-config.EXE
(0.28)
Determining dependency 'libdpdk' with pkg-config executable
'C:\\ProgramData\\chocolatey\\lib\\pkgconfiglit
e\\tools\\pkg-config-lite-0.28-1\\bin\\pkg-config.EXE'
env[PKG_CONFIG_PATH]: C:/temp/dpdk/lib/pkgconfig
Called `C:\ProgramData\chocolatey\lib\pkgconfiglite\tools\pkg-config-lite-0.28-1\bin\pkg-config.EXE
--modversion libdpdk` -> 0
21.08.0-rc1
env[PKG_CONFIG_PATH]: C:/temp/dpdk/lib/pkgconfig
Called `C:\ProgramData\chocolatey\lib\pkgconfiglite\tools\pkg-config-lite-0.28-1\bin\pkg-config.EXE
--cflag
s libdpdk` -> 0
-include rte_config.h -march=native -IC:/temp/dpdk/include
env[PKG_CONFIG_ALLOW_SYSTEM_LIBS]: 1
env[PKG_CONFIG_PATH]: C:/temp/dpdk/lib/pkgconfig
---
William