From 859d1c0be2ee801308ec376caa60f247a3ad2ef7 Mon Sep 17 00:00:00 2001
From: Matthias Andreas Benkard <matthias@benkard.de>
Date: Wed, 20 Aug 2008 11:28:48 +0200
Subject: Add a simple configure script.

---
 configure | 139 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 139 insertions(+)
 create mode 100755 configure

diff --git a/configure b/configure
new file mode 100755
index 0000000..e029edd
--- /dev/null
+++ b/configure
@@ -0,0 +1,139 @@
+#! /usr/bin/env perl
+# -*- mode: perl -*-
+
+## Toilet Lisp, a Common Lisp subset for the Étoilé runtime.
+## Copyright (C) 2008  Matthias Andreas Benkard.
+##
+## This program is free software: you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation, either version 3 of the License, or (at
+## your option) any later version.
+##
+## This program 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
+## General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+$CC = $ENV{'CC'} // "gcc";
+$CFLAGS = $ENV{'CFLAGS'} // "";
+$OBJCFLAGS = $ENV{'OBJCFLAGS'} // $CFLAGS;
+$MAKE = $ENV{'MAKE'} // "make";
+$XCODEBUILD = $ENV{'XCODEBUILD'} // "xcodebuild";
+$LLVM_CONFIG = $ENV{'LLVM_CONFIG'} // "llvm-config";
+
+$llvm = `$LLVM_CONFIG --version`;
+if ($llvm =~ /(\d+)\.(\d+).*/) {
+    $llvm_maj = $1;
+    $llvm_min = $2;
+}
+
+`echo '\#include <ffi.h>' | $CC $CFLAGS $OBJCFLAGS -c -o /dev/null -x c - 2>/dev/null`;
+if ($? == 0) {
+    $ffi_h = 1;
+} else {
+    `echo '\#include <ffi/ffi.h>' | $CC $CFLAGS $OBJCFLAGS -c -o /dev/null -x c - 2>/dev/null`;
+    if ($? == 0) {
+        $ffi_ffi_h = 1;
+    }
+    else {
+        $no_ffi = 1;
+    }
+}
+
+`echo '\#include <histedit.h>' | $CC $CFLAGS $OBJCFLAGS -c -o /dev/null -x c - 2>/dev/null`;
+$histedit_h = 1 if ($? == 0);
+
+`$XCODEBUILD -version`;
+if ($? == 0) {
+    $xcode = 1;
+    $build_cmd = "xcodebuild";
+} elsif ($ENV{'GNUSTEP_MAKEFILES'} && (`$MAKE --version` =~ /^GNU.*/)) {
+    $build_cmd = "$MAKE";
+}
+
+$darwin = (`uname -s` =~ "Darwin");
+$debian = !$darwin;
+if ($darwin) {
+    $install = "sudo port install";
+} elsif ($debian) {
+    $install = "sudo apt-get install";
+}
+
+@steps = ();
+@optional_steps = ();
+$optional_install = $install;
+
+print "Your system lacks the following REQUIRED components:\n";
+
+if ($no_ffi) {
+    print " * libffi\n";
+    $install = "$install libffi" if $darwin;
+    $install = "$install libffi-dev" if $debian;
+    $installp = 1;
+}
+
+unless ($histedit_h) {
+    print " * libedit\n";
+    $install = "$install libedit" if $darwin;
+    $install = "$install libedit-dev" if $debian;
+    $installp = 1;
+}
+
+unless ($build_cmd) {
+    print " * Either xcodebuild or GNUstep-Make\n";
+    if ($debian) {
+        $install = "$install gnustep-make libgnustep-base-dev" if $debian;
+        $installp = 1;
+    } elsif ($darwin) {
+        push @steps, (" * Download and install Xcode from: http://developer.apple.com/tools/download/\n");
+        push @steps, ("   OR: Install gnustep-make and gnustep-base through MacPorts.\n");
+    }
+}
+
+print "\n";
+print "Your system lacks the following OPTIONAL components:\n";
+
+unless ($llvm_maj && $llvm_min && $llvm_maj >= 2 && $llvm_min >= 4) {
+    print " * LLVM >= 2.3\n";
+    $optional_install = "$optional_install llvm" if $darwin;
+    $optional_install = "$optional_install llvm" if $debian;
+    $optionalp = 1;
+
+    push @optional_steps, ("   NOTE: If your distribution's version of LLVM is too old, please download and\n");
+    push @optional_steps, ("   install it manually from: http://llvm.org/releases/\n");
+}
+
+
+if ($installp) {
+    print "\n";
+    print "In order to be able to compile Toilet Lisp, please follow these steps:\n";
+    print " * In a shell, type: $install\n" if ($installp);
+    print join("", @steps);
+    print " * Rerun $0.\n";
+}
+
+if ($optionalp) {
+    print "\n";
+    print "If you want the compiler, please follow these steps:\n";
+    print " * In a shell, type: $optional_install\n" if ($optionalp);
+    print join("", @optional_steps);
+    print " * Rerun $0.\n";
+}
+
+if (!$installp) {
+    print "\n";
+    print "Congratulations!  You can now build Toilet Lisp by following these steps:\n";
+    if ($xcode) {
+        print " * In a shell, type: $XCODEBUILD";
+        print " -configuration \"Debug (no LLVM)\"" if ($optionalp);
+        print "\n";
+    } else {
+        print " * In a shell, type: $MAKE";
+        print " USE_LLVM=NO" if ($optionalp);
+        print "\n";
+    }
+}
-- 
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