[Bug 1174] Adding compilation flags to continue compiling mlx5 in iol-x86_64-unit-testing over Windows/clang

[bugzilla at dpdk.org]

https://bugs.dpdk.org/show_bug.cgi?id=1174

            Bug ID: 1174
           Summary: Adding compilation flags to continue compiling mlx5 in
                    iol-x86_64-unit-testing over Windows/clang
           Product: lab
           Version: unspecified
          Hardware: x86
                OS: Windows
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: job scripts
          Assignee: ci at dpdk.org
          Reporter: talshn at nvidia.com
                CC: dpdklab at iol.unh.edu
  Target Milestone: ---

Hi,

A community patch [1] is about to be merged to main which will change the
detection of the MLX5 DevX libraries in Windows, DPDK will no longer look for
the lib and inc folders using the env variables DEVX_INC_PATH/DEVX_LIB_PATH.

Instead the user will provide the path to those folders either in the build
command line using -Dc_args and -Dc_link_args, see example below:
        -I<include_directory>
        -L<library_directory>

 "C:\Program Files\Meson\meson.exe" setup --buildtype debug
"-Dc_args=-I\"%DEVX_INC_PATH%\"" "-Dc_link_args=-L\"%DEVX_LIB_PATH%\"" build

Another option is to Use CFLAGS/LDFLAGS

Please change your compilations scripts in iol-x86_64-unit-testing to continue
compiling mlx5 as part of the supported PMDs on Windows by using one of the
ways stated above, not changing it will skip mlx5 as seen in the said patch CI
results on Windows/clang [2].

[1] -
https://patches.dpdk.org/project/dpdk/patch/20230302132150.3330288-2-thomas@monjalon.net/

[2] - https://lab.dpdk.org/results/dashboard/patchsets/25595/

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