[dpdk-dev] [PATCH v2 1/2] eal: add rte_random.c file on windows

[Kadam, Pallavi]

On 12/18/2020 3:29 AM, Thomas Monjalon wrote:
> 17/12/2020 23:59, Pallavi Kadam:
>> This file is required to compile and build i40e PMD on Windows.
>> Add rte_rand variable to export file.
>>
>> Redefine _m_prefetchw for Clang toolchain due to following error
>> with respect to conflicting types:
>>
>> FAILED: lib/76b5a35@@rte_eal at sta/librte_eal_common_rte_random.c.obj
>> clang @lib/76b5a35@@rte_eal at sta/librte_eal_common_rte_random.c.obj.rsp
>> In file included from ../lib/librte_eal/common/rte_random.c:13:
>> In file included from ..\lib/librte_eal/include\rte_eal.h:20:
>> In file included from ..\lib/librte_eal/include\rte_per_lcore.h:25:
>> In file included from ..\lib/librte_eal/windows/include\pthread.h:21:
>> In file included from ..\lib/librte_eal/windows/include\rte_windows.h:27:
>> In file included from C:\Program Files (x86)\Windows Kits\10\include\
>> 10.0.18362.0\um\windows.h:171:
>> In file included from C:\Program Files (x86)\Windows Kits\10\include\
>> 10.0.18362.0\shared\windef.h:24:
>> In file included from C:\Program Files (x86)\Windows Kits\10\include\
>> 10.0.18362.0\shared\minwindef.h:182:
>> C:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\um\
>> winnt.h:3324:1: error: conflicting types for '_m_prefetchw'
>> _m_prefetchw (
>> ^
>> C:\Program Files\LLVM\lib\clang\10.0.0\include\prfchwintrin.h:50:1:
>> note: previous definition is here
>> _m_prefetchw(void *__P)
>> ^
>> 1 error generated.
>>
>> Signed-off-by: Pallavi Kadam <pallavi.kadam at intel.com>
>> Reviewed-by: Ranjit Menon <ranjit.menon at intel.com>
>> ---
>> +#ifdef RTE_TOOLCHAIN_CLANG
>> +#undef _m_prefetchw
>> +#define _m_prefetchw __m_prefetchw
>> +#endif
> It deserves a comment explaining why __m_prefetchw is required.
Will add a comment in v3. Thanks!
>
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