using namespace std;
using namespace Msp;
+/**
+Tries to locate a target that will help getting this target built. If all
+dependencies are up-to-date, returns this target. If there are no targets
+ready to be built (maybe because they are being built right now), returns 0.
+*/
Target *Target::get_buildable_target()
{
bool self_ok=true;
dep->rdepends.push_back(this);
}
+/**
+Prepares the target by recursively preparing dependencies, then checking
+whether rebuilding is needed. A flag is used to prevent unnecessary
+executions.
+*/
void Target::prepare()
{
if(prepared)
return;
+ prepared=true;
for(TargetList::iterator i=depends.begin(); i!=depends.end(); ++i)
(*i)->prepare();
check_rebuild();
+
}
+/**
+Returns the number of targets that need to be rebuilt in order to get this
+target up-to-date.
+*/
unsigned Target::count_rebuild()
{
if(counted)
return count;
}
+/**
+Changes the mtime of the target to the current time.
+*/
void Target::touch()
{
mtime=Time::now();
rebuild_reason=reason;
}
+/**
+Checks if this target needs to be rebuilt and why.
+*/
void Target::check_rebuild()
{
if(!buildable)
mark_rebuild("Package options changed");
}
+/**
+Hooks the target up with the given action, then returns it. This should be
+called from the public build() function of buildable targets.
+*/
Action *Target::build(Action *action)
{
building=true;
return action;
}
+/**
+Handles for the build_done signal of Action.
+*/
void Target::build_done()
{
building=false;