Minor enhancement for the configure module: Return machine, vendor and os.

scsh/configure.scm.in

@@ -1,5 +1,23 @@
 (define (host) "@scsh_host@")
 
+(define (machine-vendor-os)
+  (let ((match (regexp-search (rx (submatch (+ (~ #\-))) "-"
+                                  (submatch (+ (~ #\-))) "-"
+                                  (submatch (+ any)))
+                              (host))))
+    (list (match:substring match 1)
+          (match:substring match 2)
+          (match:substring match 3))))
+
+(define (machine)
+  (car (machine-vendor-os)))
+
+(define (vendor)
+  (cadr (machine-vendor-os)))
+
+(define (os)
+  (caddr (machine-vendor-os)))
+
 (define (prefix) "@scsh_prefix@")
 
 (define (exec-prefix) "@scsh_exec_prefix@")
@@ -24,8 +42,12 @@
 
 (define (ldflags) "@scsh_LDFLAGS@")
 
+(define (compiler-flags)
+  (string-join (list "-I" (include-dir) (defs))))
+
 (define (linker-flags)
   (string-join (list "-L" (lib-dir) (libs) "-lscsh") " "))
 
-(define (compiler-flags)
-  (string-join (list "-I" (include-dir) (defs))))
+;;; Local Variables: 
+;;; mode: Scheme
+;;; End: 

scsh/scsh-interfaces.scm

@@ -1190,6 +1190,9 @@
 
 (define-interface configure-interface
   (export host
+          machine
+          vendor
+          os
           prefix
           exec-prefix
           bin-dir

scsh/scsh-package.scm

@@ -589,5 +589,6 @@
 
 (define-structure configure configure-interface
   (open scheme
+        re-level-0 rx-syntax
         (subset srfi-13 (string-join)))
   (files configure))