collect2: fatal error: not a COFF file

[amandeepgautam]

I am trying to compile gRPC on AIX. With some workarounds, I was able to reach the very last step and this is where I get this error:

[tt][MAKE]    Generating cache.mk
[HOSTLD]  Linking /home/amandeep/grpc-1.15.1/bins/opt/grpc_cpp_plugin
collect2: fatal error: /home/amandeep/grpc-1.15.1/libs/opt/libgrpc_plugin_support.a: not a COFF file
compilation terminated.
make: *** [Makefile:17926: /home/amandeep/grpc-1.15.1/bins/opt/grpc_cpp_plugin] Error 1
[/tt]

What could be done to fix this? I would need gRPC lib to have a 64-bit executable, so the following workaround may not succeed:

https://www.tek-tips.com/viewthread.cfm?qid=654437

Any help is appreciated.