Unbreak shared library linkage on DragonFlyBSD.

Patch submitted by rimvydas.

Reviewers: llvm-commits, krytarowski, mgorny

Reviewed By: krytarowski, mgorny

Subscribers: mgorny

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D35125

llvm-svn: 355315

llvm/cmake/modules/HandleLLVMOptions.cmake

@@ -138,6 +138,7 @@ endif()
 # Pass -Wl,-z,defs. This makes sure all symbols are defined. Otherwise a DSO
 # build might work on ELF but fail on MachO/COFF.
 if(NOT (${CMAKE_SYSTEM_NAME} MATCHES "Darwin" OR WIN32 OR CYGWIN OR
+        ${CMAKE_SYSTEM_NAME} MATCHES "DragonFly" OR
         ${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD" OR
 	${CMAKE_SYSTEM_NAME} MATCHES "OpenBSD" OR
 	${CMAKE_SYSTEM_NAME} MATCHES "DragonFly") AND