From 62e9bfa5d30101efa1782b54bec8455aaf76c5ae Mon Sep 17 00:00:00 2001
From: Josh Holtrop <jholtrop@gmail.com>
Date: Sun, 16 Jun 2013 22:41:47 -0400
Subject: [PATCH] add Environment.execute(); implement first version of Program
 builder

---
 lib/rscons/builders/cc.rb      |  2 +-
 lib/rscons/builders/program.rb | 12 +++++++++++-
 lib/rscons/environment.rb      | 11 ++++++++++-
 3 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/lib/rscons/builders/cc.rb b/lib/rscons/builders/cc.rb
index 0aff664..98f48a2 100644
--- a/lib/rscons/builders/cc.rb
+++ b/lib/rscons/builders/cc.rb
@@ -7,7 +7,7 @@ module Rscons
       'OBJSUFFIX' => '.o',
     }
 
-    def run(env, sources)
+    def run(env, target, sources)
     end
   end
 end
diff --git a/lib/rscons/builders/program.rb b/lib/rscons/builders/program.rb
index 094c26a..45b978d 100644
--- a/lib/rscons/builders/program.rb
+++ b/lib/rscons/builders/program.rb
@@ -5,10 +5,20 @@ module Rscons
       'OBJSUFFIX' => '.o',
       'LIBSUFFIX' => '.a',
       'LDFLAGS' => [],
+      'LIBPATHS' => [],
       'LIBS' => [],
     }
 
-    def run(env, sources)
+    def run(env, target, sources)
+      command = [
+        env['LD'] || env['CC'],
+        '-o', target,
+        *env['LDFLAGS'],
+        *sources,
+        *env['LIBPATHS'].map {|lp| "-L#{lp}"},
+        *env['LIBS'].map {|lib| "-l#{lib}"}
+      ]
+      env.execute("LINK #{target}", command)
     end
   end
 end
diff --git a/lib/rscons/environment.rb b/lib/rscons/environment.rb
index f34d973..50cb671 100644
--- a/lib/rscons/environment.rb
+++ b/lib/rscons/environment.rb
@@ -44,11 +44,20 @@ module Rscons
       @build_dirs[src_dir] = build_dir
     end
 
+    def execute(short_desc, command)
+      if @echo == :command
+        puts command.join(' ')
+      elsif @echo == :short
+        puts short_desc
+      end
+      system(*command)
+    end
+
     def method_missing(method, *args)
       if @builders.has_key?(method.to_s)
         # TODO: build sources if necessary
         builder = @builders[method.to_s].new
-        builder.run(self, args.first)
+        builder.run(self, *args)
       end
     end
   end