cgo on windows : naming of loaded dll

Question

I am trying to use gorocksdb which is a cgo package wapping the rocksdb library on windows.

• I built the rocksdb library with vcpkg which gave me as output rocksdb-shared.dll. I set the build path to my PATH.
• I installed msys64 in order to have gcc
• I have set CGO_CFLAGS="-I/path/to/rocksdb/include" and CGO_LDFLAGS="-L/path/to/rocksdb -lrocksdb -lstdc++ -lm -lz -lbz2 -lsnappy -llz4 -lzstd"
• I have renammed rocksdb-shared.dll to librocksdb.dll because the linker requires the dll to start with lib
• I do the go get ... command
• I run my test go file and I get the error The programer can't start because rocksdb-shared.dll is missing ...
• If I rename it back to rocksdb-shared.dll the build fails because the linker can't find librocksdb.dll
• The only way to make it work is to have both rocksdb-shared.dll and librocksdb.dll in the PATH

Why the executable keeps loading rocksdb-shared.dll? I don't find any reference to it in the cgo package.

Answer 1

I think I found the answer to my question.

I think I can't rename the compiled dll because the dll "reference" itself as this name. So it won't load properly.

To resolve my problem I just renamed the parameter in the LDFLAG from -lrocksdb to -lrocksdb-shared in both my environement variable and in this file