Fix issues in test cmake, so that it uses the local libkqueue and headers

Author: arr2036

test/CMakeLists.txt

@@ -42,8 +42,8 @@ configure_file(${CMAKE_CURRENT_SOURCE_DIR}/config.h.in
 add_executable(libkqueue-test ${LIBKQUEUE_TEST_SOURCES})
 target_include_directories(libkqueue-test
                            PRIVATE
-                             "${CMAKE_SOURCE_DIR}"
-                             "${CMAKE_SOURCE_DIR}/include")
+                           "${CMAKE_SOURCE_DIR}"
+                           "${CMAKE_SOURCE_DIR}/include")
 if(WIN32)
   target_compile_definitions(libkqueue-test
                              PRIVATE
@@ -61,9 +61,25 @@ endif()
 # Don't link against -lkqueue on OSX and FreeBSD
 #
 if(NOT "${CMAKE_SYSTEM_NAME}" MATCHES "(Darwin|FreeBSD)")
+  # Prefer -pthread on POSIX
+  set(THREADS_PREFER_PTHREAD_FLAG ON)
+  find_package(Threads REQUIRED)
+
+  # Use our locally built libkqueue
+  find_library(KQUEUE_LIB
+    NAMES kqueue
+    PATHS ${PROJECT_SOURCE_DIR}/../
+    NO_DEFAULT_PATH
+    REQUIRED
+  )
+
+  # Allow test program to find libkqueue headers
+  target_include_directories(libkqueue-test PRIVATE
+                             ${PROJECT_SOURCE_DIR}/../include)
+
   target_link_libraries(libkqueue-test
                         PRIVATE
-                        kqueue
+                        ${KQUEUE_LIB}
                         Threads::Threads)
 endif()