Windows: our custom protoc-3.0.0-mingw.exe doesn't work

[laszlocsomor]

$ export ARGS="-Isrc/main/protobuf -Isrc/main/java/com/google/devtools/build/lib/buildeventstream/proto --java_out=/c/tempdir/longpath/android_deploy_info.jar --plugin=protoc-gen-grpc=third_party/grpc/protoc-gen-grpc-java-0.15.0-windows-x86_64.exe --grpc_out=/c/tempdir/longpath/ src/main/protobuf/android_deploy_info.proto"

$ third_party/protobuf/protoc-mingw.exe $ARGS ; echo $?
0

$ third_party/protobuf/3.0.0/protoc-3.0.0-mingw.exe $ARGS ; echo $?
127

$ third_party/protobuf/3.0.0/protoc-3.0.0-windows-x86_64.exe $ARGS ; echo $?
0

[laszlocsomor]

This bug was caused by #1851

[laszlocsomor]

The custom-built 3.0.0 mingw binary is just 28K, it's missing all its dependencies.
I built a statically-linked binary which works and is 55M, which is a lot more realistic as it's closer to the combined size of the DLLs. Building a dynamically-linked binary now to check its size.

[ahumesky]

Thanks!