Error when linking an application against a library using GRPC

Question

I have an application that link against another library that uses GRPC. If I use make I can link it using pkg-config --libs protobuf grpc++ grpc and it works. But I am upgrading to cmake (in addition to vcpkg) and now when I try to link my app against that library. When I do that, I get myriad linking errors

In function `absl::lts_20220623::MutexLock::MutexLock(absl::lts_20220623::Mutex*)':
[build] (.text._ZN4absl12lts_202206239MutexLockC2EPNS0_5MutexE[_ZN4absl12lts_202206239MutexLockC5EPNS0_5MutexE]+0x26): undefined reference to `absl::lts_20220623::Mutex::Lock()'

I can make that go away by adding the flags to the target_link_libraries like so

target_include_directories(
....
/workspace/third_party/centos/grpc_1480/lib
....
)
target_link_libraries(kv-validation_lib PRIVATE fmt::fmt 
    libkv.a 
    libkvproto.a 
    yaml-cpp
    -lpthread 
    ${_REFLECTION}
    ${_GRPC_GRPCPP}
    ${_PROTOBUF_LIBPROTOBUF}
    stdc++fs
    <pkg-config --libs protobuf grpc++ grpc GOES HERE AND FIXES IT>
)

But obviously, that's more like a hack. So, my question is how do I tell cmake to link against libraries that exists in a give location. Is there a FLAG that I can pass it to ${_ABSL}? Should I be using some cmake function to use the pkgconfig files? How?

If you can't tell, I a new to cmake. Thanks!

I tried using some flags like ${ABSL} but that didn't work. Looked at: How to link app against a library that depends on another library? What is the proper way to use `pkg-config` from `cmake`? Using a C++17 library against a C++11 application