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/cc/install-rule.cxx | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'build2/cc/install-rule.cxx')

diff --git a/build2/cc/install-rule.cxx b/build2/cc/install-rule.cxx
index a7e05b0..ee290e3 100644
--- a/build2/cc/install-rule.cxx
+++ b/build2/cc/install-rule.cxx
@@ -41,6 +41,8 @@ namespace build2
       // Note: for now we assume these prerequisites never come from see-
       // through groups.
       //
+      // Note: we install ad hoc prerequisites by default.
+      //
       otype ot (link_type (t).type);
 
       bool st (t.is_a<exe>  () || t.is_a<libs> ()); // Target needs shared.
-- 
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