[PATCH 20.11] eal/common: exclude code unsupported on Windows

[Xueming(Steven) Li]

Thank you, applied.

On Tue, 2021-12-07 at 17:16 +0300, Dmitry Kozlyuk wrote:
> rte_random.c and hotplug_mp.c are only intended for Unix targets,
> but were compiled on Windows due to backporting mistake,
> causing an error:
> 
>     In file included from ../lib/librte_eal/common/rte_random.c:13:
>     [...]
>     C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\um\winnt.h:3275:1:
>             error: conflicting types for '_m_prefetchw'
>     _m_prefetchw (
>     ^
>     C:\Program Files\LLVM\lib\clang\8.0.0\include\prfchwintrin.h:64:1:
>             note: previous definition is here
>     _m_prefetchw(void *__P)
>     ^
>     1 error generated.
> 
> hotplug_mp.c was compiled twice, which also caused a link-time error:
> 
>     [43/146] Linking target lib/rte_eal-21.dll
>     FAILED: lib/rte_eal-21.dll lib/rte_eal-21.pdb
>     "clang" @lib/rte_eal-21.dll.rsp
>     librte_eal_windows_eal_mp.c.obj : error LNK2005:
>             eal_dev_hotplug_request_to_primary already defined
>             in librte_eal_common_hotplug_mp.c.obj
>     librte_eal_windows_eal_mp.c.obj : error LNK2005:
>             eal_dev_hotplug_request_to_secondary already defined
>             in librte_eal_common_hotplug_mp.c.obj
>        Creating library lib\rte_eal.lib and object lib\rte_eal.exp
>     lib\rte_eal-21.dll : fatal error LNK1169:
>             one or more multiply defined symbols found
>     clang: error: linker command failed with exit code 1169
>             (use -v to see invocation)
> 
> Compile the files above only for Unix targets.
> 
> Bugzilla ID: 894
> Fixes: 51a9cd2327f3 ("eal: remove Windows-specific list of common files")
> 
> Reported-by: Liang Longfeng <longfengx.liang at intel.com>
> Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk at gmail.com>
> ---
>  lib/librte_eal/common/meson.build | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/lib/librte_eal/common/meson.build b/lib/librte_eal/common/meson.build
> index e7ea0fd388..7105e8bc4b 100644
> --- a/lib/librte_eal/common/meson.build
> +++ b/lib/librte_eal/common/meson.build
> @@ -29,11 +29,9 @@ sources += files(
>  	'eal_common_timer.c',
>  	'eal_common_trace_points.c',
>  	'eal_common_uuid.c',
> -	'hotplug_mp.c',
>  	'malloc_elem.c',
>  	'malloc_heap.c',
>  	'rte_malloc.c',
> -	'rte_random.c',
>  	'rte_reciprocal.c',
>  	'rte_service.c',
>  )
> @@ -50,6 +48,7 @@ if not is_windows
>  		'eal_common_trace_utils.c',
>  		'hotplug_mp.c',
>  		'malloc_mp.c',
> +		'rte_random.c',
>  		'rte_keepalive.c',
>  	)
>  endif