Split build system into library and driver

1 files changed, 25 insertions, 0 deletions

diff --git a/libbuild2/functions-process-path.cxx b/libbuild2/functions-process-path.cxx
new file mode 100644
index 0000000..65e426b
--- /dev/null
+++ b/libbuild2/functions-process-path.cxx
@@ -0,0 +1,25 @@
+// file      : libbuild2/functions-process-path.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+#include <libbuild2/function.hxx>
+#include <libbuild2/variable.hxx>
+
+using namespace std;
+
+namespace build2
+{
+  void
+  process_path_functions ()
+  {
+    function_family f ("process_path");
+
+    // As discussed in value_traits<process_path>, we always have recall.
+    //
+    f["recall"] = &process_path::recall;
+    f["effect"] = [](process_path p)
+    {
+      return move (p.effect.empty () ? p.recall : p.effect);
+    };
+  }
+}