TODO: On FreeBSD, libexecinfo needs to be linked

--- CMakeLists.txt.orig	2020-03-16 02:04:05 UTC
+++ CMakeLists.txt
@@ -65,7 +65,7 @@ endif()
 
 find_path(EXECINFO_INCLUDE_DIR NAMES execinfo.h)
 if(NOT EXECINFO_INCLUDE_DIR MATCHES "-NOTFOUND$")
-  add_definitions(-DBACKTRACE)
+	#add_definitions(-DBACKTRACE)
 endif()
 
 add_subdirectory(FeLib)