I’m building a Windows C++ app based on OpenSSL and would like to be able to easily move between PCs including ones where there is no OpenSSL installed.

So I downloaded OpenSSL with the msys2 environment and tried to link it to my program. Here is the basic CMakeLists.txt

cmake_minimum_required(VERSION 3.5)

project(BasicSsl LANGUAGES CXX)

set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

SET(OPENSSL_ROOT_DIR "D:/msys64/mingw64")

set(OPENSSL_USE_STATIC_LIBS TRUE)
find_package(OpenSSL REQUIRED)
message(WARNING "libs: ${OPENSSL_LIBRARIES}")

add_executable(BasicSsl main.cpp)

target_include_directories(BasicSsl PRIVATE ${OPENSSL_INCLUDE_DIR})
target_link_libraries(BasicSsl PRIVATE  OpenSSL::Crypto OpenSSL::SSL)

Here’s the main.cpp

#include <openssl/rand.h>

#define RANDID_SIZE 17

int main()
{
    uint8_t randid[RANDID_SIZE];

    if (RAND_bytes(randid, RANDID_SIZE) != 1)
    {
        fprintf(stderr, "openssl rand errorn");
        return {};
    }

    return 0;
}

The problem is I keep getting tons of linker errors like

D:/msys64/mingw64/lib/libcrypto.a(libcrypto-lib-bio_sock.obj):(.text+0x2d3): undefined reference to `__imp_WSAGetLastError'

I think I’m missing something very obvious but can’t figure out what exactly