Index: BuildSetup.cmake
--- BuildSetup.cmake.orig
+++ BuildSetup.cmake
@@ -40,6 +40,8 @@ elseif( ${CMAKE_SYSTEM_NAME} MATCHES "Linux" )
     set( CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS} -O2" )
     set( CMAKE_C_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS} -O2" )
     set( CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -shared" )
+elseif( ${CMAKE_SYSTEM_NAME} MATCHES "OpenBSD" )
+    set( CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -shared" )
 elseif( ${CMAKE_SYSTEM_NAME} MATCHES "Windows" )
 else()
     message( ERROR "CMAKE_SYSTEM_NAME = ${CMAKE_SYSTEM_NAME}, not supported. Currently supported: Linux, Darwin, SunOS, Windows" )