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authorBoris Kolpackov <boris@codesynthesis.com>2021-09-20 15:59:39 +0200
committerBoris Kolpackov <boris@codesynthesis.com>2021-09-20 15:59:39 +0200
commitb7cb7f5510de019527f2a7b9e3f81dbb9813b5d9 (patch)
treeb204239436d477224a8664c82d8cf08a9629a504 /libbuild2/adhoc-rule-regex-pattern.cxx
parentab978916ef5d3a8f876953697c6eb9cdeedbc998 (diff)
Add support for disabling clean through target-prerequisite relationship
Our current semantics is to clean any prerequisites that are in the same project (root scope) as the target and it may seem more natural to rather only clean prerequisites that are in the same base scope. While it's often true for simple projects, in more complex cases it's not unusual to have common intermediate build results (object files, utility libraries, etc) reside in the parent and/or sibling directories. With such arrangements, cleaning only in base (even from the project root) may leave such intermediate build results laying around (since there is no reason to list them as prerequisites of any directory aliases). So we clean in the root scope by default but now any target-prerequisite relationship can be marked not to trigger a clean with the clean=false prerequisite-specific value.
Diffstat (limited to 'libbuild2/adhoc-rule-regex-pattern.cxx')
-rw-r--r--libbuild2/adhoc-rule-regex-pattern.cxx3
1 files changed, 2 insertions, 1 deletions
diff --git a/libbuild2/adhoc-rule-regex-pattern.cxx b/libbuild2/adhoc-rule-regex-pattern.cxx
index c621b67..9550527 100644
--- a/libbuild2/adhoc-rule-regex-pattern.cxx
+++ b/libbuild2/adhoc-rule-regex-pattern.cxx
@@ -405,7 +405,8 @@ namespace build2
continue;
// @@ TODO: it could be handy to mark a prerequisite (e.g., a tool)
- // ad hoc so that it doesn't interfere with the $< list.
+ // ad hoc so that it doesn't interfere with the $< list. Also
+ // clean=false.
//
pts.push_back (prerequisite_target (&pt, false /* adhoc */));
}