File 000-boost-thread.patch of Package OpenSCAD

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1cf0fb6f1..f465731c3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -111,7 +111,7 @@ if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
   endif()
 endif()
 
-set(BOOST_DIRECTLY_REQUIRED_LIBRARIES filesystem system regex program_options)
+set(BOOST_DIRECTLY_REQUIRED_LIBRARIES filesystem system regex program_options thread)
 
 find_package(PkgConfig)