[dpdk-dev] Generating Debug information in Windows using Clang (PDB files)
Adham Masarwah
adham at mellanox.com
Tue May 21 15:41:06 CEST 2019
>From: Bruce Richardson <bruce.richardson at intel.com>
>Sent: Tuesday, May 21, 2019 11:22 AM
>
>On Mon, May 20, 2019 at 07:02:22PM +0100, Menon, Ranjit wrote:
>> Adham…
>>
>> I don’t think we debugged using clang compiled code for Hello world –
>> mainly because it was only a “helloworld” application and we didn’t
>> quite need any debugging!:-)
>>
>>
>> I found this link:
>> [1]https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fblog.llvm.org%2F2017%2F08%2Fllvm-on-windows-now-supports-pdb-debug&data=02%7C01%7Cadham%40mellanox.com%7Cea97cb9cae684d72bbed08d6ddc57192%7Ca652971c7d2e4d9ba6a4d149256f461b%7C0%7C0%7C636940237422999520&sdata=2PxSjEyx%2BXatdDKMtVcXFlWQ5jnBM9nK2782jnRg1BA%3D&reserved=0.
>> html
>>
>> …which says to use the following:
>>
>> Here are two simple ways to test out this new functionality:
>> 1. Have clang-cl invoke lld automatically
>>
>> clang-cl -fuse-ld=lld -Z7 -MTd hello.cpp
>> 2. Invoke clang-cl and lld separately.
>>
>> clang-cl -c -Z7 -MTd -o hello.obj hello.cpp
>>
>> lld-link -debug hello.obj
>>
>> Can you try it with just the -Z7 option?
>>
>>
>> I’m also adding some persons from Microsoft to this thread, hoping they
>> can help…
>>
>>
>> +Harini +Omar +Jeffrey
>>
>>
>> ranjit m.
>>
>Part of the issue may be that we use clang, rather than clang-cl on windows.
>
>/Bruce
I did a small test to check clang vs clang-cl, the compiled binary and the PDB file from the Clang-cl seems working fine in WinDbg.
The problem we have that the meson.build files are not compatible with clang-cl, and the meson build command is failing.
This is the first error:
config\x86\meson.build:23:1: ERROR: Problem encountered: SSE4.2 instruction set is required for DPDK.
Please set the machine type to "nehalem" or "corei7" or higher value
/Adham
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