When DISABLE_IBV_DIRECT=1 (dlsym path), the build still unconditionally links -libverbs. Any remaining direct ibv_* calls (and even an unused -libverbs without --as-needed) can keep libibverbs as a hard runtime dependency, undermining the goal of optional runtime loading. Consider omitting -libverbs when using the dlsym path (and ensure all ibv_* usage goes through pfn_*), and add -ldl for toolchains/glibc versions where dlopen is not in libc.

ENABLE_IBV_DIRECT=OFF claims to resolve symbols via dlsym at runtime, but the target still links against ${IBVERBS_LIBRARY} unconditionally when IBVERBS_FOUND. This keeps libibverbs as a hard dependency and defeats optional loading. If runtime optionality is intended, avoid linking ${IBVERBS_LIBRARY} when ENABLE_IBV_DIRECT is OFF and ensure all ibv_* usage is through the loaded function pointers.

Within GetIbvDeviceList(), most verbs calls were converted to pfn_* (e.g., pfn_ibv_get_device_list/pfn_ibv_open_device/etc.), but the function still calls ibv_free_device_list(deviceList) directly later in the same function. In the dlsym path this reintroduces a direct libibverbs symbol reference and breaks the “all calls through pfn_*” model. Switch that cleanup call to pfn_ibv_free_device_list as well.