From 2468ff90c048330bcaa097bd78d54effcba1d411 Mon Sep 17 00:00:00 2001
From: Oscar Fuentes <ofv@wanadoo.es>
Date: Sat, 23 May 2009 02:37:24 +0000
Subject: [PATCH] CMake: Use libdl only when available. Fixes build on FreeBSD.

llvm-svn: 72311
---
 cmake/config-ix.cmake       | 1 +
 cmake/modules/AddLLVM.cmake | 4 +++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/cmake/config-ix.cmake b/cmake/config-ix.cmake
index adebb1b38f5..0c903a19029 100755
--- a/cmake/config-ix.cmake
+++ b/cmake/config-ix.cmake
@@ -42,6 +42,7 @@ check_include_file(windows.h HAVE_WINDOWS_H)
 # library checks
 include(CheckLibraryExists)
 check_library_exists(pthread pthread_create "" HAVE_LIBPTHREAD)
+check_library_exists(dl dlopen "" HAVE_LIBDL)
 
 # function checks
 include(CheckSymbolExists)
diff --git a/cmake/modules/AddLLVM.cmake b/cmake/modules/AddLLVM.cmake
index 62d9f3195bb..1f0ff74c12c 100755
--- a/cmake/modules/AddLLVM.cmake
+++ b/cmake/modules/AddLLVM.cmake
@@ -33,7 +33,9 @@ macro(add_llvm_executable name)
     if( MINGW )
       target_link_libraries(${name} imagehlp psapi)
     elseif( CMAKE_HOST_UNIX )
-      target_link_libraries(${name} dl)
+      if( HAVE_LIBDL )
+	target_link_libraries(${name} dl)
+      endif()
       if( LLVM_ENABLE_THREADS AND HAVE_LIBPTHREAD )
 	target_link_libraries(${name} pthread)
       endif()