From 67c8605f03399f75c8328698ed3ac20c9a360d8f Mon Sep 17 00:00:00 2001
From: Jean-Claude Wippler <jcw@equi4.com>
Date: Sat, 31 Mar 2007 11:15:56 +0000
Subject: [PATCH] added build dependency handling

git-svn-id: svn://svn.equi4.com/kitgen/trunk@1353 9e558909-932a-0410-a563-af77432da1eb
---
 extdefs/Itk.kbs |  4 ++--
 kbs.tcl         | 40 +++++++++++++++++++++++++++++++++++-----
 2 files changed, 37 insertions(+), 7 deletions(-)

diff --git a/extdefs/Itk.kbs b/extdefs/Itk.kbs
index 34d87af..60b3d1a 100644
--- a/extdefs/Itk.kbs
+++ b/extdefs/Itk.kbs
@@ -1,8 +1,8 @@
 Version 3.3
 
-Requires incrtcl
+Requires Itcl
 
-Sources symlink [Topdir]/8.x/incrtcl-[Version]
+Sources symlink [Topdir]/8.x/Itcl-[Version]
 
 Build {
     Sh [Srcdir]/itk/configure \
diff --git a/kbs.tcl b/kbs.tcl
index f4866e0..6be7d5c 100644
--- a/kbs.tcl
+++ b/kbs.tcl
@@ -10,7 +10,9 @@ proc kbs {command args} {
     uplevel 1 ::kbs::$command $args
 }
 
-namespace eval kbs {}
+namespace eval kbs {
+    variable seq 0
+}
     
 proc kbs::help {} {
     puts "Kitgen Build System
@@ -23,11 +25,11 @@ proc kbs::help {} {
 }
 
 proc kbs::list {} {
-    puts [glob -directory ../../extdefs -tails *.kbs]
+    puts [lsort -dict [glob -directory ../../extdefs -tails *.kbs]]
 }
 
 proc kbs::make {} {
-    foreach f [lsort [glob -directory ../../extdefs -tails *.kbs]] {
+    foreach f [lsort -dict [glob -directory ../../extdefs -tails *.kbs]] {
         set target [file root $f]
         if {![file exists build/$target]} {
             puts $target:
@@ -43,9 +45,11 @@ proc kbs::build {target} {
 }
 
 namespace eval config {
+    
     proc init {name} {
-        namespace eval v [list set package $name]
-        namespace eval v [list set maindir [pwd]]
+        namespace eval v {}
+        set v::package $name
+        set v::maindir [pwd]
         file mkdir build/$name
         cd build/$name
         source [Topdir]/extdefs/$name.kbs
@@ -56,6 +60,32 @@ namespace eval config {
         return $v::version
     }
     
+    proc Requires {args} {
+        # build all the other required extensions first, then resume this one
+        # this recurses into kbs::build, so we need to save/restore all state
+        foreach target $args {
+            if {![file exists $v::maindir/build/$target]} {
+                puts ">>> $target (required by $v::package)"
+                set pwd [pwd]
+                cd $v::maindir
+                
+                set keep {}
+                foreach x [info vars v::*] { lappend keep $x [set $x] }
+                namespace delete ::config::v
+
+                set r [catch { ::kbs::build $target } err]
+                
+                catch { namespace delete ::config::v }
+                namespace eval ::config::v {}
+                foreach {x y} $keep { set $x $y }
+                
+                cd $pwd
+                if {$r} { return -code error $err}
+                puts "<<< $target (resuming build of $v::package)"
+            }
+        }
+    }
+    
     proc Sources {type args} {
         if {![file exists [Srcdir]]} {
             eval [linsert $args 0 src-$type]
-- 
2.23.0