[PATCH] libstdc++: exclude cygwin/mingw from relro linker test

[Jonathan Wakely]

On 11/11/20 12:41 +0000, Jonathan Wakely wrote:
>On 11/11/20 12:34 +0000, Jonathan Yong via Libstdc++ wrote:
>>cygwin/mingw hosted linker may support multiple targets with ELF 
>>relro support. This breaks configure testing.
>>
>>Attached patch excludes cygwin/mingw PE format from relro linker 
>>flag. Patch OK?
>
>OK, thanks.

Pushed to master now.