Index: nel/src/misc/dynloadlib.cpp
===================================================================
--- nel/src/misc/dynloadlib.cpp	(revision 2089)
+++ nel/src/misc/dynloadlib.cpp	(working copy)
@@ -215,7 +215,7 @@
 	// MTR: some new error handling. Just logs if it couldn't load the handle.
 	if(_LibHandle == NULL) {
 #ifdef NL_OS_UNIX
-		char *errormsg=dlerror();
+		const char *errormsg=dlerror();
 #else
 		const char *errormsg="Verify DLL existence";
 #endif
Index: nel/src/misc/CMakeLists.txt
===================================================================
--- nel/src/misc/CMakeLists.txt	(revision 2089)
+++ nel/src/misc/CMakeLists.txt	(working copy)
@@ -2,6 +2,18 @@
 
 IF(NOT WIN32)
   ADD_LIBRARY(nelmisc SHARED ${SRC})
+  # check for presence of execinfo.h, which contains the definitions
+  # of backtrace() and backtrace_symbols()
+  CHECK_INCLUDE_FILES(execinfo.h NL_HAVE_EXECINFO)
+  IF(NL_HAVE_EXECINFO)
+    # *BSD variants don't offer backtrace(), but there is a small
+    # library containing these functions. Add it to the library
+    # list for linking, if present
+    CHECK_LIBRARY_EXISTS(execinfo backtrace "" NL_HAVE_EXECINFO_LIB)
+    IF(NL_HAVE_EXECINFO_LIB)
+      TARGET_LINK_LIBRARIES(nelmisc execinfo)
+    ENDIF(NL_HAVE_EXECINFO_LIB)
+  ENDIF(NL_HAVE_EXECINFO)
 ELSE(NOT WIN32)
   ADD_LIBRARY(nelmisc STATIC ${SRC})
 ENDIF(NOT WIN32)
Index: nel/src/misc/debug.cpp
===================================================================
--- nel/src/misc/debug.cpp	(revision 2089)
+++ nel/src/misc/debug.cpp	(working copy)
@@ -55,7 +55,7 @@
 #	include <cstdio>
 #	include <cstdlib>
 #	define IsDebuggerPresent() false
-#   ifndef NL_OS_MAC
+#   ifdef NL_HAVE_EXECINFO
 #	    include <execinfo.h>
 #   endif
 //#	include <malloc.h>
@@ -606,7 +606,7 @@
 		}
 		SymCleanup(getProcessHandle());
 		*/
-#elif !defined(NL_OS_MAC)
+#elif defined(NL_HAVE_EXECINFO)
 		// Make place for stack frames and function names
 		const uint MaxFrame=64;
 		void *trace[MaxFrame];
@@ -1033,7 +1033,7 @@
 	{
 		result += e.what();
 	}
-#elif !defined(NL_OS_MAC)
+#elif defined(NL_HAVE_EXECINFO)
 	// Make place for stack frames and function names
 	const uint MaxFrame=64;
 	void *trace[MaxFrame];