From bd2ba663855541d727588455b4905ffb19a51fc3 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Sun, 21 May 2023 09:06:57 +0200
Subject: Add support for dynamic target extraction in addition to
 prerequisites

This functionality is enabled with the depdb-dyndep --dyn-target option. Only
the make format is supported, where the listed targets are added as ad hoc
group members (unless already specified as static members). This functionality
is not available in the --byproduct mode.
---
 libbuild2/build/script/parser.hxx | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

(limited to 'libbuild2/build/script/parser.hxx')

diff --git a/libbuild2/build/script/parser.hxx b/libbuild2/build/script/parser.hxx
index 70e24aa..b615a90 100644
--- a/libbuild2/build/script/parser.hxx
+++ b/libbuild2/build/script/parser.hxx
@@ -123,14 +123,16 @@ namespace build2
         execute_depdb_preamble_dyndep (
           action a, const scope& base, file& t,
           environment& e, const script& s, runner& r,
-          depdb& dd, bool& update, timestamp mt, bool& deferred_failure)
+          depdb& dd,
+          paths& dyn_targets,
+          bool& update, timestamp mt, bool& deferred_failure)
         {
           exec_depdb_preamble (
             a, base, t,
             e, s, r,
             s.depdb_preamble.begin () + *s.depdb_dyndep,
             s.depdb_preamble.end (),
-            dd, &update, mt, &deferred_failure);
+            dd, &dyn_targets, &update, mt, &deferred_failure);
         }
 
         // This version doesn't actually execute the depdb-dyndep builtin (but
@@ -161,6 +163,7 @@ namespace build2
           // This is getting a bit ugly (we also don't really need to pass
           // depdb here). One day we will find a better way...
           //
+          paths dyn_targets;
           bool deferred_failure; // Dymmy.
 
           dyndep_byproduct v;
@@ -169,7 +172,7 @@ namespace build2
             e, s, r,
             s.depdb_preamble.begin () + *s.depdb_dyndep,
             s.depdb_preamble.end (),
-            dd, &update, mt, &deferred_failure, &v);
+            dd, &dyn_targets, &update, mt, &deferred_failure, &v);
           return v;
         }
 
@@ -221,6 +224,7 @@ namespace build2
                              environment&, const script&, runner&,
                              lines_iterator begin, lines_iterator end,
                              depdb&,
+                             paths* dyn_targets = nullptr,
                              bool* update = nullptr,
                              optional<timestamp> mt = nullopt,
                              bool* deferred_failure = nullptr,
@@ -231,6 +235,7 @@ namespace build2
                            size_t line_index, const location&,
                            action, const scope& base, file&,
                            depdb&,
+                           paths& dyn_targets,
                            bool& update,
                            timestamp,
                            bool& deferred_failure,
@@ -355,6 +360,7 @@ namespace build2
         optional<pair<location, size_t>>
                            depdb_dyndep_;   // depdb-dyndep location/position.
         bool               depdb_dyndep_byproduct_ = false; // --byproduct
+        bool               depdb_dyndep_dyn_target_ = false; // --dyn-target
         lines              depdb_preamble_; // Note: excluding depdb-clear.
 
         // If present, the first impure function called in the body of the
-- 
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