0.8.5.15:

[sbcl.git] / contrib / sb-posix / macros.lisp

diff --git a/contrib/sb-posix/macros.lisp b/contrib/sb-posix/macros.lisp
index 959843b..882ac62 100644 (file)
--- a/contrib/sb-posix/macros.lisp
+++ b/contrib/sb-posix/macros.lisp
@@ -43,22 +43,26 @@
 
 (defmacro define-call (name return-type error-predicate &rest arguments)
   (let ((lisp-name (lisp-for-c-symbol name)))
-    `(progn
-      (export ',lisp-name :sb-posix)
-      (declaim (inline ,lisp-name))
-      (defun ,lisp-name ,(mapcar #'car arguments)
-       (let ((r (alien-funcall
-                 (extern-alien
-                  ,name
-                  (function ,return-type
-                            ,@(mapcar
-                               (lambda (x)
-                                 (gethash (cadr x) *designator-types* (cadr x)))
-                               arguments)))
-                 ,@(mapcar (lambda (x)
-                             (if (nth-value 1 (gethash (cadr x) *designator-types*))
-                                 `(,(intern (symbol-name (cadr x)) :sb-posix)
-                                   ,(car x))
-                                 (car x)))
-                           arguments))))
-         (if (,error-predicate r) (syscall-error) r))))))
+    (if (sb-fasl::foreign-symbol-address-as-integer-or-nil name)
+       `(progn
+         (export ',lisp-name :sb-posix)
+         (declaim (inline ,lisp-name))
+         (defun ,lisp-name ,(mapcar #'car arguments)
+           (let ((r (alien-funcall
+                     (extern-alien
+                      ,name
+                      (function ,return-type
+                                ,@(mapcar
+                                   (lambda (x)
+                                     (gethash (cadr x) *designator-types* (cadr x)))
+                                   arguments)))
+                     ,@(mapcar (lambda (x)
+                                 (if (nth-value 1 (gethash (cadr x) *designator-types*))
+                                     `(,(intern (symbol-name (cadr x)) :sb-posix)
+                                       ,(car x))
+                                     (car x)))
+                               arguments))))
+             (if (,error-predicate r) (syscall-error) r))))
+       `(progn
+         (export ',lisp-name :sb-posix)
+         (sb-int:style-warn "Didn't find definition for ~S" ,name)))))