[AMD Official Use Only] Thank you Xi Ruoyao for pointing that out. Any reasons why GCC does not support it for C? With Regards, S. Biplab Raut -----Original Message----- From: Xi Ruoyao <xry111@xxxxxxxxxxxxxxxx> Sent: Friday, April 22, 2022 1:07 PM To: Raut, S Biplab <Biplab.Raut@xxxxxxx>; gcc-help@xxxxxxxxxxx Subject: Re: Compile time errors on using target attribute for Function Multi Versioning [CAUTION: External Email] On Fri, 2022-04-22 at 07:09 +0000, Raut, S Biplab via Gcc-help wrote: > Hi All, > I want to support Function Multi Versioning (FMV) in my code > by using GCC's "target" attribute. > Few functions in my program are hand-written intrinsic codes, so I > would prefer to use "target" over "target_clones" attribute. > But, I am getting function redefinition errors for the multiple > versions of the function when I try to compile the test program. > > Please find the details below: > Source code is based on:- > https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgcc. > gnu.org%2Fwiki%2FFunctionMultiVersioning%23%3A~%3Atext%3D1%2520__attri > bute__%2520&data=05%7C01%7CBiplab.Raut%40amd.com%7C01b67bf7053048b > 8fd3e08da2432d931%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C6378620 > 98077115339%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMz > IiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=TCxrfZmzLCE > CkYy7gSSS7PNA%2Bd%2BsF7EKpDBYNIaGpus%3D&reserved=0((target,return% > 200%3B%0A%20%2033%20%7D Please read the page carefully: "Support is only available in C++ for i386 targets." -- Xi Ruoyao <xry111@xxxxxxxxxxxxxxxx> School of Aerospace Science and Technology, Xidian University