(pkg-exists-p "glib-2.0" :atleast-version "2.4.0")
-(when (string>= (pkg-version "glib-2.0") "2.6.0")
+(when (pkg-exists-p "glib-2.0" :atleast-version "2.6.0" :error nil)
(push :glib2.6 *features*))
-(when (string>= (pkg-version "glib-2.0") "2.8.0")
+(when (pkg-exists-p "glib-2.0" :atleast-version "2.8.0" :error nil)
(push :glib2.8 *features*))
#+sbcl
-(when (string>= (lisp-implementation-version) "0.9.8")
- (push :sbcl>=0.9.8 *features*))
+(progn
+ (when (sbcl>= 0 9 8)
+ (push :sbcl>=0.9.8 *features*))
+ (when (sbcl>= 0 9 10)
+ (push :sbcl>=0.9.10 *features*)))
+
+#+(and sbcl (not alien-callbacks))
+(eval-when (:compile-toplevel :load-toplevel :execute)
+ (unless (find-symbol "DEFINE-ALIEN-FUNCTION" "SB-ALIEN")
+ (error "You need to upgrade SBCL to a version with native C callback support or see the README file about how to add third party callbacks to your current SBCL version.")))
+
+#+(and sbcl alien-callbacks)
+(eval-when (:compile-toplevel :load-toplevel :execute)
+ (when (find-symbol "DEFINE-ALIEN-FUNCTION" "SB-ALIEN")
+ (error "Third party C callback code detected in a SBCL image with native callback support. As clg now uses native callbacks when available, you need to use a \"clean\" core file.")))
+
(defsystem glib
:depends-on (clg-tools)