X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/clg/blobdiff_plain/300d704ed5a29a886cd9155f17c8b7e08c8dff9c..fcdb9e3641b6b833f7f02538c2a777dda1d43602:/tools/config.lisp

diff --git a/tools/config.lisp b/tools/config.lisp
index 0b776e0..bfc660d 100644
--- a/tools/config.lisp
+++ b/tools/config.lisp
@@ -1,25 +1,136 @@
+(defpackage #:pkg-config
+  (:use #:common-lisp #:clg-utils #+(or cmu clisp) #:ext #+sbcl #:sb-ext)
+  #+sbcl
+  (:import-from #:sb-int #:featurep)
+  (:export #:pkg-cflags #:pkg-libs #:pkg-exists-p #:pkg-version #:pkg-variable)
+  (:export #:featurep #:sbcl>=))
+
+(in-package #:pkg-config)
+
 (defparameter *pkg-config* "/usr/bin/pkg-config")
 
-(defun split-string (string &key (start 0) end)
-  (let ((position (position #\sp string :start start :end end)))
-    (if position
-	(cons
-	 (subseq string start position)
-	 (split-string string :start (1+ position) :end end))
-      (list (subseq string start end)))))
 
-(defun run-pkg-config (package &rest options)
+#+(or sbcl cmu)
+(defun run-pkg-config (package error-p &rest options)
   (let ((process
 	 (run-program
 	  *pkg-config* (cons package options) :wait t :output :stream)))
     (unless process
       (error "Unable to run ~A" *pkg-config*))
-    (unless (zerop (process-exit-code process))
-      (error "~A: ~A" *pkg-config* (read-line (process-output process))))
-    (prog1
-	(delete-if #'(lambda (str) (string= str "")) (split-string (read-line (process-output process))))
-      (process-close process))))
+    (let ((exit-code (process-exit-code process)))
+      (unless (or (not error-p) (zerop exit-code))
+	(error
+	 (or
+	  (format nil "~A: ~{~A~%~}" *pkg-config* (read-lines (process-error process)))
+	  (format nil "~A terminated with exit code ~A"
+		  *pkg-config* exit-code))))
+      (let ((output (read-lines (process-output process))))	  
+	(process-close process)
+	(values output exit-code)))))
+
+#+clisp
+(defun run-pkg-config (package error-p &rest options)
+  (let ((outfile (format nil "/tmp/clg-pkg-config-~A-output" (os:process-id)))
+	(errfile (format nil "/tmp/clg-pkg-config-~A-error" (os:process-id))))
+    (unwind-protect
+	(let ((exit-code 
+	       (run-shell-command 
+		(format nil "~A ~A ~{~A ~}2>~A" 
+		 *pkg-config* package 
+		 (mapcar #'(lambda (option) 
+			     (format nil "'~A'" option))
+			 options)
+		 errfile)
+		:output outfile :if-output-exists :overwrite)))
+	  (cond
+	   ((= exit-code 127) (error "Unable to run ~A" *pkg-config*))
+	   ((and error-p (not (zerop exit-code)))
+	    (with-open-file (output errfile)
+	      (let ((errmsg (read-lines output)))
+		(error
+		 (if (not errmsg)
+		     (format nil "~A terminated with exit code ~A" *pkg-config* exit-code)
+		   (format nil "~A: ~{~A~%~}" *pkg-config* errmsg))))))
+	   (t
+	    (values 
+	     (with-open-file (output outfile)
+	       (read-lines output))
+	     exit-code))))
+      (progn
+	(delete-file outfile)
+	(delete-file errfile)))))
 
 
 (defun pkg-cflags (package)
-  (run-pkg-config package "--cflags"))
+  (split-string (first (run-pkg-config package t "--cflags"))))
+
+(defun pkg-libs (package)
+  (split-string (first (run-pkg-config package t "--libs"))))
+
+
+(defun pkg-exists-p (package &key version atleast-version max-version error)
+  (let ((version-check
+	 (cond
+	  (version (format nil "= ~A" version))
+	  (atleast-version (format nil ">= ~A" atleast-version))
+	  (max-version (format nil "<= ~A" max-version))
+	  (t ""))))
+    (if error
+	(progn
+	  (run-pkg-config package t "--print-errors" "--exists" version-check)
+	  t)
+      (multiple-value-bind (output exit-code)
+	  (run-pkg-config package nil "--exists" version-check)
+	(declare (ignore output))
+	(zerop exit-code)))))
+
+
+(defun pkg-version (package)
+  (first (run-pkg-config package t "--modversion")))
+
+
+(defun pkg-variable (package variable)
+  (first (run-pkg-config package t "--variable" variable)))
+
+
+(defun |#?-reader| (stream subchar arg)
+  (declare (ignore subchar arg))
+  (let ((not-p (when (char= (peek-char nil stream) #\-)
+		 (read-char stream)))
+	(conditional (read stream t nil t)))
+    (cond
+     (*read-suppress* (read stream t nil t))
+     ((not *read-eval*)
+      (error 'reader-error 
+       :format-control "Attempt to read #? while *READ-EVAL* is bound to NIL."
+       :format-arguments nil :stream stream))
+     ((if not-p
+	  (eval conditional)
+	(not (eval conditional)))
+      (let ((*read-suppress* t))
+	(read stream t nil t)))))
+  (values))
+
+(set-dispatch-macro-character #\# #\? #'|#?-reader|)
+
+
+#+sbcl
+(progn
+  (defun sbcl-version ()
+    (let* ((dot1 (position #\. (lisp-implementation-version)))
+	   (dot2 (position #\. (lisp-implementation-version) :start (1+ dot1))))
+      (values 
+       (parse-integer (lisp-implementation-version) :end dot1)
+       (parse-integer (lisp-implementation-version) :start (1+ dot1) :end dot2)
+       (parse-integer (lisp-implementation-version) :start (1+ dot2) :junk-allowed t))))
+  (defun sbcl>= (req-major req-minor req-micro)
+    (multiple-value-bind (major minor micro) (sbcl-version)      
+      (or 
+       (> major req-major)
+       (and (= major req-major) (> minor req-minor))
+       (and (= major req-major) (= minor req-minor) (>= micro req-micro))))))
+
+#-sbcl
+(defun sbcl>= (req-major req-minor req-micro)
+  (declare (ignore req-major req-minor req-micro))
+  nil)