--- include/system/libcontext.h.orig	2017-03-23 17:46:25.970103000 +0100
+++ include/system/libcontext.h	2017-03-23 17:49:04.053146000 +0100
@@ -23,13 +23,15 @@
 
 
-#if defined(__GNUC__) || defined(__APPLE__)
+#if defined(__GNUC__) || defined(__APPLE__) || defined(__FreeBSD__)
 
     #define LIBCONTEXT_COMPILER_gcc
 
-    #if defined(__linux__)
+    #if defined(__linux__) || defined(__FreeBSD__)
     #ifdef __x86_64__
         #define LIBCONTEXT_PLATFORM_linux_x86_64
         #define LIBCONTEXT_CALL_CONVENTION
-
+    #elif __amd64__
+        #define LIBCONTEXT_PLATFORM_linux_x86_64
+        #define LIBCONTEXT_CALL_CONVENTION
     #elif __i386__
         #define LIBCONTEXT_PLATFORM_linux_i386