--- CMakeLists.txt.orig	2024-06-13 00:13:26 UTC
+++ CMakeLists.txt
@@ -187,6 +187,10 @@ endif()
   find_package(LibRT)
 endif()
 
+if(CMAKE_SYSTEM_NAME STREQUAL FreeBSD)
+  find_package(BlocksRuntime)
+endif()
+
 check_function_exists(_pthread_workqueue_init HAVE__PTHREAD_WORKQUEUE_INIT)
 check_function_exists(getprogname HAVE_GETPROGNAME)
 check_function_exists(mach_absolute_time HAVE_MACH_ABSOLUTE_TIME)