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-rw-r--r--build/target45
1 files changed, 35 insertions, 10 deletions
diff --git a/build/target b/build/target
index 9587c6a..000496c 100644
--- a/build/target
+++ b/build/target
@@ -36,7 +36,15 @@ namespace build
// Target state.
//
- enum class target_state {unknown, postponed, unchanged, changed, failed};
+ enum class target_state
+ {
+ group, // Target's state is the group's state.
+ unknown,
+ postponed,
+ unchanged,
+ changed,
+ failed
+ };
std::ostream&
operator<< (std::ostream&, target_state);
@@ -68,15 +76,20 @@ namespace build
// on all the prerequisites in a loop, skipping ignored. Specially,
// for actions with the "first" execution mode, it calls
// execute_prerequisites() while for those with the "last" mode --
- // reverse_execute_prerequisites(); see <operation>, <algorithm>
- // for details.
+ // reverse_execute_prerequisites(); see <build/operation>,
+ // <build/algorithm> for details. The group recipe calls the group's
+ // recipe.
//
extern const recipe empty_recipe;
extern const recipe noop_recipe;
extern const recipe default_recipe;
+ extern const recipe group_recipe;
target_state
- noop_action (action, target&); // Defined in <algorithm>
+ noop_action (action, target&); // Defined in <build/algorithm>.
+
+ target_state
+ group_action (action, target&); // Defined in <build/algorithm>.
// Prerequisite references as used in the target::prerequisites list
// below.
@@ -264,7 +277,13 @@ namespace build
}
public:
- target_state state;
+ target_state raw_state;
+
+ target_state
+ state () const
+ {
+ return raw_state != target_state::group ? raw_state : group->raw_state;
+ }
// Number of direct targets that depend on this target in the current
// action. It is incremented during the match phase and then decremented
@@ -296,12 +315,18 @@ namespace build
// Also reset the target state. If this is a noop recipe, then
// mark the target unchanged so that we don't waste time executing
- // the recipe.
+ // the recipe. If this is a group recipe, then mark the state as
+ // coming from the group.
//
- recipe_function** f (recipe_.target<recipe_function*> ());
- state = (f == nullptr || *f != &noop_action)
- ? target_state::unknown
- : target_state::unchanged;
+ raw_state = target_state::unknown;
+
+ if (recipe_function** f = recipe_.target<recipe_function*> ())
+ {
+ if (*f == &noop_action)
+ raw_state = target_state::unchanged;
+ else if (*f == &group_action)
+ raw_state = target_state::group;
+ }
dependents = 0;
}