With a clean build environment and at least two parallel jobs
a compilation error may occur:
...
-- Looking for uv/version.h - found
libubox include dir: ULOOP_INCLUDE_DIRS-NOTFOUND
libubox libraries: ULOOP_LIBRARIES-NOTFOUND
...
CMake Error in lib/event-libs/uloop/CMakeLists.txt:
Found relative path while evaluating include directories of
"websockets-evlib_uloop":
"ULOOP_INCLUDE_DIRS-NOTFOUND"
...
Signed-off-by: Ronny Kotzschmar <ro.ok@me.com>