configure: Add configure script.

* configure: New file.

1 files changed, 42 insertions, 0 deletions

diff --git a/configure b/configure
new file mode 100755
index 0000000..b765c4e
--- /dev/null
+++ b/configure
@@ -0,0 +1,42 @@
+#! /usr/bin/env -S guile --no-auto-compile
+!#
+
+;;; kolam --- GraphQL implementation
+;;; Copyright © 2022 Arun Isaac <arunisaac@systemreboot.net>
+;;;
+;;; This file is part of kolam.
+;;;
+;;; kolam is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU Affero General Public License as
+;;; published by the Free Software Foundation; either version 3 of the
+;;; License, or (at your option) any later version.
+;;;
+;;; kolam is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;;; Affero General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU Affero General Public
+;;; License along with kolam.  If not, see
+;;; <http://www.gnu.org/licenses/>.
+
+(use-modules (srfi srfi-28))
+
+(define (check-for-guile-3.0)
+  (display "checking for guile 3.0... ")
+  (if (string=? (effective-version) "3.0")
+      (display (format "yes~%"))
+      (begin
+        (display (format "no~%error: Guile 3.0 not found~%"))
+        (exit #f))))
+
+(define (check-for-module module)
+  (display (format "checking for module ~a... " module))
+  (if (resolve-module module)
+      (display (format "yes~%"))
+      (begin
+        (display (format "no~%error: no ~a found~%"))
+        (exit #f))))
+
+(check-for-guile-3.0)
+(check-for-module '(json))