From 3cc5e3bd441fc9d18fece3d9e99fae75c78438e7 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Thu, 28 Jun 2018 09:44:15 +0200
Subject: Implement support for excluded and ad hoc prerequisites

The inclusion/exclusion is controlled via the 'include' prerequisite-specific
variable. Valid values are:

false  - exclude
true   - include
adhoc  - include but treat as an ad hoc input

For example:

lib{foo}: cxx{win32-utility}: include = ($cxx.targe.class == 'windows')
exe{bar}: libs{plugin}: include = adhoc
---
 build2/config/operation.cxx | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'build2/config')

diff --git a/build2/config/operation.cxx b/build2/config/operation.cxx
index 1e6a387..f9e9253 100644
--- a/build2/config/operation.cxx
+++ b/build2/config/operation.cxx
@@ -570,7 +570,8 @@ namespace build2
       &configure_match,
       &configure_execute,
       nullptr, // operation post
-      nullptr  // meta-operation post
+      nullptr, // meta-operation post
+      nullptr  // include
     };
 
     // disfigure
@@ -820,6 +821,7 @@ namespace build2
       &disfigure_execute,
       nullptr, // operation post
       nullptr, // meta-operation post
+      nullptr  // include
     };
 
     // create
-- 
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