diff -Naur awesome-3.4.2.orig/awesomeConfig.cmake awesome-3.4.2/awesomeConfig.cmake
--- awesome-3.4.2.orig/awesomeConfig.cmake	2009-11-27 04:03:25.000000000 +0900
+++ awesome-3.4.2/awesomeConfig.cmake	2009-11-28 01:17:01.639797168 +0900
@@ -167,6 +167,14 @@
 # Check for libev
 a_find_library(LIB_EV ev)
 
+# Check for backtrace
+include(CheckFunctionExists)
+CHECK_FUNCTION_EXISTS(backtrace HAVE_BACKTRACE)
+if(NOT HAVE_BACKTRACE)
+    a_find_library(LIB_EXECINFO execinfo)
+    set(AWESOME_REQUIRED_LIBRARIES ${AWESOME_REQUIRED_LIBRARIES} ${LIB_EXECINFO})
+endif()
+
 # Error check
 if(NOT LUA51_FOUND AND NOT LUA50_FOUND) # This is a workaround to a cmake bug
     message(FATAL_ERROR "lua library not found")