--- gegl/gegl-config.c.orig
+++ gegl/gegl-config.c
@@ -44,6 +44,11 @@
 #include <sys/sysctl.h>
 #endif
 
+#ifdef __FreeBSD__
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#endif
+
 G_DEFINE_TYPE (GeglConfig, gegl_config, G_TYPE_OBJECT)
 
 static GObjectClass * parent_class = NULL;
@@ -277,6 +282,15 @@
 # endif
                              ) * page_size;
       mach_port_deallocate (mach_task_self (), host);
+    }
+#elif defined(__FreeBSD__)
+    size_t len = sizeof(unsigned int);
+    unsigned int realmem, physmem;
+    if(sysctlbyname("hw.realmem", &realmem, &len, NULL, 0)) {
+      mem_total = (int64_t) realmem;
+    }
+    if (sysctlbyname("hw.physmem", &physmem, &len, NULL, 0)) {
+      mem_available = physmem;
     }
 #else
     mem_total = sysconf (_SC_PHYS_PAGES) * sysconf (_SC_PAGESIZE);