diff --git a/c/c.go b/c/c.go
index c36d90ac..a68a4720 100644
--- a/c/c.go
+++ b/c/c.go
@@ -276,3 +276,6 @@ func GetoptLong(argc Int, argv **Char, optstring *Char, longopts *Option, longin
 func GetoptLongOnly(argc Int, argv **Char, optstring *Char, longopts *Option, longindex *Int) Int
 
 // -----------------------------------------------------------------------------
+
+//go:linkname Sysconf C.sysconf
+func Sysconf(name Int) Long