X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fbuilder.cpp;h=aabfc00f3908213795ad2fd2a73fb67e6b4dbbb1;hb=0f5283a54fd188072eca23fbd980a43c6c869913;hp=3f93a672cfe46e8ef0de8c7e9c8ca5da8279ee3c;hpb=4dc31cca056ea293d320928f61fef0558089d32d;p=builder.git

diff --git a/source/builder.cpp b/source/builder.cpp
index 3f93a67..aabfc00 100644
--- a/source/builder.cpp
+++ b/source/builder.cpp
@@ -1,222 +1,870 @@
-#include <fstream>
-#include <msp/strutils.h>
-#include <msp/parser/parser.h>
+/* $Id$
+
+This file is part of builder
+Copyright © 2006-2007 Mikko Rasa, Mikkosoft Productions
+Distributed under the LGPL
+*/
+
+#include <iostream>
+#include <set>
+#include <msp/core/except.h>
+#include <msp/core/getopt.h>
+#include <msp/datafile/parser.h>
+#include <msp/io/buffered.h>
+#include <msp/io/except.h>
+#include <msp/io/file.h>
 #include <msp/path/utils.h>
+#include <msp/strings/formatter.h>
+#include <msp/strings/regex.h>
+#include <msp/strings/utils.h>
+#include <msp/time/units.h>
+#include <msp/time/utils.h>
+#include "action.h"
+#include "analyzer.h"
+#include "binarypackage.h"
 #include "builder.h"
-#include "executable.h"
 #include "header.h"
+#include "install.h"
 #include "misc.h"
-#include "objectfile.h"
 #include "package.h"
+#include "pkgconfig.h"
+#include "sharedlibrary.h"
+#include "sourcepackage.h"
+#include "systemlibrary.h"
+#include "tarball.h"
+#include "unlink.h"
 #include "virtualtarget.h"
 
 using namespace std;
 using namespace Msp;
 
 Builder::Builder(int argc, char **argv):
+	main_pkg(0),
+	analyzer(0),
+	build(false),
+	clean(0),
+	dry_run(false),
+	help(false),
 	verbose(1),
-	cwd(Path::getcwd())
+	show_progress(false),
+	build_file("Build"),
+	jobs(1),
+	conf_all(false),
+	conf_only(false),
+	build_all(false),
+	create_makefile(false),
+	current_arch("native")
 {
-	for(int i=1; i<argc; ++i)
-		cmdline_targets.push_back(argv[i]);
+	string   analyze_mode;
+	string   work_dir;
+	bool     full_paths=false;
+	unsigned max_depth=5;
+
+	GetOpt getopt;
+	getopt.add_option('a', "analyze",    analyze_mode, GetOpt::REQUIRED_ARG);
+	getopt.add_option('b', "build",      build,        GetOpt::NO_ARG);
+	getopt.add_option('c', "clean",      clean,        GetOpt::NO_ARG);
+	getopt.add_option('f', "file",       build_file,   GetOpt::REQUIRED_ARG);
+	getopt.add_option('h', "help",       help,         GetOpt::NO_ARG);
+	getopt.add_option('j', "jobs",       jobs,         GetOpt::REQUIRED_ARG);
+	getopt.add_option('n', "dry-run",    dry_run,      GetOpt::NO_ARG);
+	getopt.add_option('v', "verbose",    verbose,      GetOpt::NO_ARG);
+	getopt.add_option('A', "conf-all",   conf_all,     GetOpt::NO_ARG);
+	getopt.add_option('B', "build-all",  build_all,    GetOpt::NO_ARG);
+	getopt.add_option('C', "chdir",      work_dir,     GetOpt::REQUIRED_ARG);
+	getopt.add_option('P', "progress",   show_progress, GetOpt::NO_ARG);
+	getopt.add_option('W', "what-if",    what_if,      GetOpt::REQUIRED_ARG);
+	getopt.add_option(     "arch",       current_arch, GetOpt::REQUIRED_ARG);
+	getopt.add_option(     "conf-only",  conf_only,    GetOpt::NO_ARG);
+	getopt.add_option(     "full-paths", full_paths,   GetOpt::NO_ARG);
+	//getopt.add_option(     "makefile",   create_makefile, GetOpt::NO_ARG);
+	getopt.add_option(     "max-depth",  max_depth,    GetOpt::REQUIRED_ARG);
+	getopt.add_option(     "prefix",     prefix,       GetOpt::REQUIRED_ARG);
+	getopt(argc, argv);
+
+	if(!analyze_mode.empty())
+	{
+		analyzer=new Analyzer(*this);
+
+		if(analyze_mode=="deps")
+			analyzer->set_mode(Analyzer::DEPS);
+		else if(analyze_mode=="alldeps")
+			analyzer->set_mode(Analyzer::ALLDEPS);
+		else if(analyze_mode=="rebuild")
+			analyzer->set_mode(Analyzer::REBUILD);
+		else if(analyze_mode=="rdeps")
+			analyzer->set_mode(Analyzer::RDEPS);
+		else
+			throw UsageError("Invalid analyze mode");
+
+		analyzer->set_max_depth(max_depth);
+		analyzer->set_full_paths(full_paths);
+	}
+	else if(!clean && !create_makefile)
+		build=true;
+
+	const vector<string> &args=getopt.get_args();
+	for(vector<string>::const_iterator i=args.begin(); i!=args.end(); ++i)
+	{
+		unsigned equal=i->find('=');
+		if(equal!=string::npos)
+			cmdline_options.insert(StringMap::value_type(i->substr(0, equal), i->substr(equal+1)));
+		else
+			cmdline_targets.push_back(*i);
+	}
+
 	if(cmdline_targets.empty())
 		cmdline_targets.push_back("default");
+
+	if(!work_dir.empty())
+		chdir(work_dir.c_str());
+
+	cwd=getcwd();
+
+	Architecture &native_arch=archs.insert(ArchMap::value_type("native", Architecture(*this, "native"))).first->second;
+	native_arch.set_tool("CC",  "gcc");
+	native_arch.set_tool("CXX", "g++");
+	native_arch.set_tool("LD",  "gcc");
+	native_arch.set_tool("LXX", "g++");
+	native_arch.set_tool("AR",  "ar");
+
+	load_build_file((get_home_dir()/".builderrc").str());
+
+	if(prefix.empty())
+	{
+		if(current_arch=="native")
+			prefix=(get_home_dir()/"local").str();
+		else
+			prefix=(get_home_dir()/"local"/current_arch).str();
+	}
 }
 
-Package *Builder::get_package(const string &n)
+/**
+Gets a package by name, possibly creating it.
+
+@param   name  Package name
+
+@return  Pointer to the package, or 0 if the package could not be located
+*/
+Package *Builder::get_package(const string &name)
 {
-	PackageMap::iterator i=packages.find(n);
+	PackageMap::iterator i=packages.find(format("%s/%s", name, current_arch));
+	if(i==packages.end())
+		i=packages.find(name);
 	if(i!=packages.end())
 		return i->second;
 
+	// Try to get source directory with pkgconfig
 	list<string> argv;
 	argv.push_back("pkg-config");
 	argv.push_back("--variable=source");
-	argv.push_back(n);
-	Path::Path srcdir=run_command(argv);
-	if(srcdir.empty())
-	{
-		string dirname=n;
-		if(dirname.compare(0, 3, "msp"))
-			dirname.erase(0, 3);
-		if(Path::exists(cwd/dirname))
-			srcdir=cwd/dirname;
-		else if(Path::exists(cwd/".."/dirname))
-			srcdir=cwd/".."/dirname;
-	}
-	else
-		srcdir=strip(srcdir.str());
-	
+	argv.push_back(name);
+	if(verbose>=4)
+		cout<<"Running "<<join(argv.begin(), argv.end())<<'\n';
+	string srcdir=strip(run_command(argv));
+
+	PathList dirs;
 	if(!srcdir.empty())
-		load_build_file(srcdir/"Build");
+		dirs.push_back(srcdir);
 
-	return 0;
+	// Make some other guesses about the source directory
+	dirs.push_back(cwd/name);
+	dirs.push_back(cwd/".."/name);
+	if(!name.compare(0, 3, "msp"))
+	{
+		dirs.push_back(cwd/name.substr(3));
+		dirs.push_back(cwd/".."/name.substr(3));
+	}
+
+	// Go through the candidate directories and look for a Build file
+	for(PathList::iterator j=dirs.begin(); j!=dirs.end(); ++j)
+		if(!load_build_file(*j/"Build"))
+		{
+			i=packages.find(name);
+			if(i!=packages.end())
+				return i->second;
+			break;
+		}
+
+	// Package source not found - create a binary package
+	Package *pkg=BinaryPackage::from_pkgconfig(*this, name);
+
+	packages.insert(PackageMap::value_type(name, pkg));
+
+	if(!pkg)
+		problem(name, "not found");
+
+	return pkg;
 }
 
-Target *Builder::get_target(const string &n)
+/**
+Returns the target with the given name, or 0 if no such target exists.
+*/
+Target *Builder::get_target(const string &n) const
 {
-	TargetMap::iterator i=targets.find(n);
+	TargetMap::const_iterator i=targets.find(n);
 	if(i!=targets.end())
 		return i->second;
 	return 0;
 }
 
+/**
+Tries to locate a header included from a given location and with a given include
+path.  Considers known targets as well as existing files.  If a matching target
+is not found but a file exists, a new SystemHeader target will be created and
+returned.
+*/
 Target *Builder::get_header(const string &include, const string &from, const list<string> &path)
 {
-	string id=from+":"+include;
+	string hash(8, 0);
+	update_hash(hash, from);
+	for(list<string>::const_iterator i=path.begin(); i!=path.end(); ++i)
+		update_hash(hash, *i);
+
+	string id=hash+include;
 	TargetMap::iterator i=includes.find(id);
 	if(i!=includes.end())
 		return i->second;
 
+	static string cxx_ver;
+	if(cxx_ver.empty())
+	{
+		StringList argv;
+		argv.push_back(get_current_arch().get_tool("CXX"));
+		argv.push_back("--version");
+		cxx_ver=Regex("[0-9]\\.[0-9.]+").match(run_command(argv))[0].str;
+		while(!cxx_ver.empty() && !exists(Path("/usr/include/c++")/cxx_ver))
+		{
+			unsigned dot=cxx_ver.rfind('.');
+			if(dot==string::npos)
+				break;
+			cxx_ver.erase(dot);
+		}
+		if(verbose>=5)
+			cout<<"C++ version is "<<cxx_ver<<'\n';
+	}
+
 	string fn=include.substr(1);
-	Target *tgt;
-	if(include[0]=='"' && (tgt=check_header(Path::Path(from)/fn)))
-		return tgt;
-	if((tgt=check_header(Path::Path("/usr/include")/fn)))
-		return tgt;
-	if((tgt=check_header(Path::Path("/usr/include/c++/4.1.2")/fn)))
-		return tgt;
-	for(list<string>::const_iterator j=path.begin(); j!=path.end(); ++j)
-		if((tgt=check_header(Path::Path(*j)/fn)))
-			return tgt;
-	
-	return 0;
+	if(verbose>=5)
+		cout<<"Looking for include "<<fn<<" with path "<<join(path.begin(), path.end())<<'\n';
+
+	StringList syspath;
+	if(current_arch=="native")
+		syspath.push_back("/usr/include");
+	else
+		syspath.push_back("/usr/"+get_architecture(current_arch).get_prefix()+"/include");
+	syspath.push_back((Path("/usr/include/c++/")/cxx_ver/fn).str());
+
+	Target *tgt=0;
+	if(include[0]=='\"')
+		tgt=get_header(Path(from)/fn);
+	for(list<string>::const_iterator j=path.begin(); (!tgt && j!=path.end()); ++j)
+		tgt=get_header(cwd/ *j/fn);
+	for(list<string>::const_iterator j=syspath.begin(); (!tgt && j!=syspath.end()); ++j)
+		tgt=get_header(Path(*j)/fn);
+
+	includes.insert(TargetMap::value_type(id, tgt));
+
+	return tgt;
+}
+
+/**
+Tries to locate a library with the given library path.  Considers known targets
+as well as existing files.  If a matching target is not found but a file exists,
+a new SystemLibrary target will be created and returned.
+
+@param   lib   Name of the library to get (without "lib" prefix or extension)
+@param   path  List of paths to search for the library
+@param   mode  Shared / static mode
+
+@return  Some kind of library target, if a match was found
+*/
+Target *Builder::get_library(const string &lib, const list<string> &path, LibMode mode)
+{
+	string hash(8, 0);
+	for(list<string>::const_iterator i=path.begin(); i!=path.end(); ++i)
+		update_hash(hash, *i);
+
+	//XXX Incorporate mode into id
+	string id=hash+lib;
+	TargetMap::iterator i=libraries.find(id);
+	if(i!=libraries.end())
+		return i->second;
+
+	StringList syspath;
+	if(current_arch=="native")
+	{
+		syspath.push_back("/lib");
+		syspath.push_back("/usr/lib");
+	}
+	else
+		syspath.push_back("/usr/"+get_current_arch().get_prefix()+"/lib");
+
+	if(verbose>=5)
+		cout<<"Looking for library "<<lib<<" with path "<<join(path.begin(), path.end())<<'\n';
+
+	Target *tgt=0;
+	for(StringList::const_iterator j=path.begin(); (!tgt && j!=path.end()); ++j)
+		tgt=get_library(lib, cwd/ *j, mode);
+	for(StringList::iterator j=syspath.begin(); (!tgt && j!=syspath.end()); ++j)
+		tgt=get_library(lib, *j, mode);
+
+	libraries.insert(TargetMap::value_type(id, tgt));
+
+	return tgt;
+}
+
+const Architecture &Builder::get_architecture(const string &arch) const
+{
+	ArchMap::const_iterator i=archs.find(arch);
+	if(i==archs.end())
+		throw KeyError("Unknown architecture", arch);
+
+	return i->second;
+}
+
+const Architecture &Builder::get_current_arch() const
+{
+	return get_architecture(current_arch);
+}
+
+void Builder::apply_profile_template(Config &config, const string &pt) const
+{
+	vector<string> parts=split(pt, '-');
+
+	for(vector<string>::iterator i=parts.begin(); i!=parts.end(); ++i)
+	{
+		ProfileTemplateMap::const_iterator j=profile_tmpl.find(*i);
+		if(j==profile_tmpl.end())
+			continue;
+
+		config.update(j->second);
+	}
+}
+
+void Builder::problem(const string &p, const string &d)
+{
+	problems.push_back(Problem(p, d));
+}
+
+/**
+Adds a target to both the target map and the new target queue.  Called from
+Target constructor.
+*/
+void Builder::add_target(Target *t)
+{
+	targets.insert(TargetMap::value_type(t->get_name(), t));
+	new_tgts.push_back(t);
 }
 
 int Builder::main()
 {
-	if(load_build_file("Build"))
+	if(load_build_file(cwd/build_file))
 	{
 		cerr<<"No build info here.\n";
 		return 1;
 	}
 
-	default_pkg=packages.begin()->second;
+	main_pkg->configure(cmdline_options, conf_all?2:1);
 
-	while(!new_pkgs.empty())
+	if(help)
 	{
-		Package *pkg=new_pkgs.front();
-		new_pkgs.erase(new_pkgs.begin());
-		pkg->resolve_refs();
+		usage(0, "builder", false);
+		cout<<'\n';
+		package_help();
+		return 0;
 	}
 
-	cout<<"Active packages:";
-	for(PackageMap::iterator i=packages.begin(); i!=packages.end(); ++i)
+	if(!conf_only && create_targets())
+		return 1;
+
+	PackageList all_reqs=main_pkg->collect_requires();
+
+	if(conf_only)
+		return 0;
+
+	cout<<all_reqs.size()<<" active packages, "<<targets.size()<<" targets\n";
+	if(verbose>=2)
+	{
+		for(PackageList::const_iterator i=all_reqs.begin(); i!=all_reqs.end(); ++i)
+		{
+			cout<<' '<<(*i)->get_name();
+			if(dynamic_cast<SourcePackage *>(*i))
+				cout<<'*';
+			unsigned count=0;
+			unsigned ood_count=0;
+			for(TargetMap::iterator j=targets.begin(); j!=targets.end(); ++j)
+				if(j->second->get_package()==*i)
+				{
+					++count;
+					if(j->second->get_rebuild())
+						++ood_count;
+				}
+			if(count)
+			{
+				cout<<" ("<<count<<" targets";
+				if(ood_count)
+					cout<<", "<<ood_count<<" out-of-date";
+				cout<<')';
+			}
+			cout<<'\n';
+		}
+	}
+
+	if(analyzer)
+		analyzer->analyze();
+
+	if(!problems.empty())
 	{
-		cout<<' '<<i->second->get_name();
-		if(i->second->get_buildable())
-			cout<<'*';
+		cerr<<"The following problems were detected:\n";
+		for(ProblemList::iterator i=problems.begin(); i!=problems.end(); ++i)
+			cerr<<"  "<<i->package<<": "<<i->descr<<'\n';
+		cerr<<"Please fix them and try again.\n";
+		return 1;
 	}
-	cout<<'\n';
-	
-	create_targets();
 
+	//if(create_makefile
+
+	if(clean)
+		exit_code=do_clean();
+	else if(build)
+		exit_code=do_build();
+
+	return exit_code;
+}
+
+Builder::~Builder()
+{
+	for(PackageMap::iterator i=packages.begin(); i!=packages.end(); ++i)
+		delete i->second;
 	for(TargetMap::iterator i=targets.begin(); i!=targets.end(); ++i)
-		cout<<i->second->get_name()<<' '<<i->second->get_type()<<'\n';
+		delete i->second;
+	delete analyzer;
+}
 
-	cout<<"Active targets: "<<targets.size()<<'\n';
+void Builder::usage(const char *reason, const char *argv0, bool brief)
+{
+	if(reason)
+		cerr<<reason<<'\n';
 
-	return 0;
+	if(brief)
+		cerr<<"Usage: "<<argv0<<" [-a|--analyze MODE] [-b|--build] [-c|--clean] [-f|--file FILE] [-h|--help] [-j|--jobs NUM] [-n||--dry-run] [-v|--verbose] [-A|--conf-all] [-B|--build-all] [-C|--chdir DIRECTORY] [-W|--what-if FILE] [--chrome] [--conf-only] [--full-paths] [--max-depth NUM] [<target> ...]";
+	else
+	{
+		cerr<<
+			"Usage: "<<argv0<<" [options] [<target> ...]\n"
+			"\n"
+			"Options:\n"
+			"  -a, --analyze MODE  Perform analysis.  MODE can be deps, alldeps or rebuild.\n"
+			"  -b, --build         Perform build even if doing analysis.\n"
+			"  -c, --clean         Clean buildable targets.\n"
+			"  -f, --file FILE     Read info from FILE instead of Build.\n"
+			"  -h, --help          Print this message.\n"
+			"  -j, --jobs NUM      Run NUM commands at once, whenever possible.\n"
+			"  -n, --dry-run       Don't actually do anything, only show what would be done.\n"
+			"  -v, --verbose       Print more information about what's going on.\n"
+			"  -A, --conf-all      Apply configuration to all packages.\n"
+			"  -B, --build-all     Build all targets unconditionally.\n"
+			"  -C, --chdir DIR     Change to DIR before doing anything else.\n"
+			"  -P, --progress      Display progress while building.\n"
+			"  -W, --what-if FILE  Pretend that FILE has changed.\n"
+			"  --conf-only         Stop after configuring packages.\n"
+			"  --full-paths        Output full paths in analysis.\n"
+			//"  --makefile          Create a makefile for this package.\n"
+			"  --max-depth NUM     Maximum depth to show in analysis.\n";
+	}
 }
 
-int Builder::load_build_file(const Path::Path &fn)
+/**
+Loads the given build file.
+
+@param   fn  Path to the file
+
+@return  0 on success, -1 if the file could not be opened
+*/
+int Builder::load_build_file(const Path &fn)
 {
-	ifstream in(fn.str().c_str());
-	if(!in)
-		return -1;
+	try
+	{
+		IO::File inf(fn.str());
+		IO::Buffered in(inf);
 
-	Parser::Parser parser(in, fn.str());
-	Loader loader(*this, cwd/fn.subpath(0, fn.size()-1));
-	loader.load(parser);
+		if(verbose>=3)
+			cout<<"Reading "<<fn<<'\n';
+
+		DataFile::Parser parser(in, fn.str());
+		Loader loader(*this, fn.subpath(0, fn.size()-1));
+		loader.load(parser);
+	}
+	catch(const IO::FileNotFound &)
+	{
+		return -1;
+	}
 
 	return 0;
 }
 
-void Builder::create_targets()
+/**
+Creates targets for all packages and prepares them for building.
+
+@return  0 if everything went ok, -1 if something bad happened and a build
+         shouldn't be attempted
+*/
+int Builder::create_targets()
 {
 	Target *world=new VirtualTarget(*this, "world");
-	add_target(world);
+
 	Target *def_tgt=new VirtualTarget(*this, "default");
-	add_target(def_tgt);
+	world->add_depend(def_tgt);
 
-	for(PackageMap::iterator i=packages.begin(); i!=packages.end(); ++i)
+	Target *install=new VirtualTarget(*this, "install");
+	world->add_depend(install);
+
+	Target *tarballs=new VirtualTarget(*this, "tarballs");
+	world->add_depend(tarballs);
+
+	PackageList all_reqs=main_pkg->collect_requires();
+	for(PackageList::iterator i=all_reqs.begin(); i!=all_reqs.end(); ++i)
 	{
-		cout<<i->second->get_source()<<'\n';
-		const ComponentList &components=i->second->get_components();
-		for(ComponentList::const_iterator j=components.begin(); j!=components.end(); ++j)
-		{
-			Path::Path base=i->second->get_source()/j->get_source();
-			cout<<base<<'\n';
-			list<string> files=list_files(base);
+		SourcePackage *spkg=dynamic_cast<SourcePackage *>(*i);
+		if(!spkg)
+			continue;
 
-			list<ObjectFile *> objs;
-			for(list<string>::iterator k=files.begin(); k!=files.end(); ++k)
-			{
-				Path::Path fn=base/ *k;
-				//cout<<*k<<'\n';
-				string ext=Path::splitext(*k).ext;
-				if(ext==".cpp" || ext==".c")
-				{
-					SourceFile *src=new SourceFile(*this, &*j, fn.str());
-					add_target(src);
-					
-					ObjectFile *obj=new ObjectFile(*this, *j, *src);
-					add_target(obj);
-					objs.push_back(obj);
-				}
-				else if(ext==".h")
-					add_target(new Header(*this, &*j, fn.str()));
-			}
+		const ComponentList &components=spkg->get_components();
+		for(ComponentList::const_iterator j=components.begin(); j!=components.end(); ++j)
+			j->create_targets();
 
-			Executable *exe=new Executable(*this, *j, objs);
-			add_target(exe);
-			if(i->second==default_pkg)
-				def_tgt->add_depend(exe);
+		if(spkg->get_install_flags()&(SourcePackage::LIB|SourcePackage::INCLUDE))
+		{
+			PkgConfig *pc=new PkgConfig(*this, *spkg);
+			install->add_depend(new Install(*this, *spkg, *pc));
 		}
+
+		tarballs->add_depend(new TarBall(*this, *spkg));
 	}
 
+	// Find dependencies until no new targets are created
 	while(!new_tgts.empty())
 	{
 		Target *tgt=new_tgts.front();
 		new_tgts.erase(new_tgts.begin());
 		tgt->find_depends();
+		if(!tgt->get_depends_ready())
+			new_tgts.push_back(tgt);
 	}
+
+	// Apply what-ifs
+	for(StringList::iterator i=what_if.begin(); i!=what_if.end(); ++i)
+	{
+		Target *tgt=get_target((cwd/ *i).str());
+		if(!tgt)
+		{
+			cerr<<"Unknown what-if target "<<*i<<'\n';
+			return -1;
+		}
+		tgt->touch();
+	}
+
+	// Make the cmdline target depend on all targets mentioned on the command line
+	Target *cmdline=new VirtualTarget(*this, "cmdline");
+	bool build_world=false;
+	for(list<string>::iterator i=cmdline_targets.begin(); i!=cmdline_targets.end(); ++i)
+	{
+		Target *tgt=get_target(*i);
+		if(!tgt)
+			tgt=get_target((cwd/ *i).str());
+		if(!tgt)
+		{
+			cerr<<"I don't know anything about "<<*i<<'\n';
+			return -1;
+		}
+		if(tgt==world)
+			build_world=true;
+		cmdline->add_depend(tgt);
+	}
+
+	/* If world is to be built, prepare cmdline.  If not, add cmdline to world
+	   and prepare world.  I don't really like this, but it keeps the graph
+	   acyclic. */
+	if(build_world)
+		cmdline->prepare();
+	else
+	{
+		world->add_depend(cmdline);
+		world->prepare();
+	}
+
+	for(PackageMap::iterator i=packages.begin(); i!=packages.end(); ++i)
+		if(SourcePackage *spkg=dynamic_cast<SourcePackage *>(i->second))
+			spkg->get_deps_cache().save();
+
+	return 0;
 }
 
-Target *Builder::check_header(const Msp::Path::Path &fn)
+/**
+Check if a header exists, either as a target or a file.  Either an existing
+target or a new SystemHeader target will be returned.
+*/
+Target *Builder::get_header(const Msp::Path &fn)
 {
 	Target *tgt=get_target(fn.str());
 	if(tgt) return tgt;
 
-	if(Path::exists(fn))
+	if(exists(fn))
 	{
-		add_target(tgt=new SystemHeader(*this, fn.str()));
+		tgt=new SystemHeader(*this, fn.str());
 		return tgt;
 	}
 	return 0;
 }
 
-void Builder::add_target(Target *t)
+Target *Builder::get_library(const string &lib, const Path &path, LibMode mode)
 {
-	targets.insert(TargetMap::value_type(t->get_name(), t));
-	new_tgts.push_back(t);
+	// Populate a list of candidate filenames
+	StringList candidates;
+
+	if(mode!=ALL_STATIC)
+	{
+		if(current_arch=="win32")
+		{
+			candidates.push_back("lib"+lib+".dll");
+			candidates.push_back(lib+".dll");
+		}
+		else
+			candidates.push_back("lib"+lib+".so");
+	}
+
+	/* Static libraries are always considered, since sometimes shared versions
+	may not be available */
+	candidates.push_back("lib"+lib+".a");
+	if(current_arch=="win32")
+		candidates.push_back("lib"+lib+".dll.a");
+
+	for(StringList::iterator i=candidates.begin(); i!=candidates.end(); ++i)
+	{
+		string full=(path/ *i).str();
+		Target *tgt=get_target(full);
+
+		if(tgt)
+		{
+			Target *real_tgt=tgt;
+			if(dynamic_cast<Install *>(tgt))
+				real_tgt=real_tgt->get_depends().front();
+
+			/* Ignore dynamic libraries from local packages unless library mode is
+			DYNAMIC */
+			if(dynamic_cast<SharedLibrary *>(real_tgt) && mode!=DYNAMIC)
+				continue;
+			else if(tgt)
+				return tgt;
+		}
+		else if(exists(full))
+		{
+			tgt=new SystemLibrary(*this, full);
+			return tgt;
+		}
+	}
+
+	return 0;
+}
+
+/**
+Updates a hash with a string.  This is used from get_header and get_library.
+*/
+void Builder::update_hash(string &hash, const string &value)
+{
+	for(unsigned i=0; i<value.size(); ++i)
+		hash[i%hash.size()]^=value[i];
+}
+
+/**
+This function supervises the build process, starting new actions when slots
+become available.
+*/
+int Builder::do_build()
+{
+	Target *cmdline=get_target("cmdline");
+
+	unsigned total=cmdline->count_rebuild();
+	if(!total)
+	{
+		cout<<"Already up to date\n";
+		return 0;
+	}
+	cout<<"Will build "<<total<<" target(s)\n";
+
+	vector<Action *> actions;
+
+	unsigned count=0;
+
+	bool fail=false;
+	bool finish=false;
+
+	while(!finish)
+	{
+		if(actions.size()<jobs && !fail)
+		{
+			Target *tgt=cmdline->get_buildable_target();
+			if(tgt)
+			{
+				Action *action=tgt->build();
+				if(action)
+					actions.push_back(action);
+
+				if(show_progress)
+				{
+					cout<<count<<" of "<<total<<" targets built\033[1G";
+					cout.flush();
+				}
+			}
+			else if(actions.empty())
+				finish=true;
+		}
+		else
+			Time::sleep(10*Time::msec);
+
+		for(unsigned i=0; i<actions.size();)
+		{
+			int status=actions[i]->check();
+			if(status>=0)
+			{
+				++count;
+
+				delete actions[i];
+				actions.erase(actions.begin()+i);
+				if(status>0)
+					fail=true;
+				if(actions.empty() && fail)
+					finish=true;
+			}
+			else
+				++i;
+		}
+	}
+
+	if(show_progress)
+		cout<<"\033[K";
+	if(fail)
+		cout<<"Build failed\n";
+	else if(show_progress)
+		cout<<"Build complete\n";
+
+	return fail?1:0;
+}
+
+/**
+Cleans buildable targets.  If clean is 1, cleans only this package.  If
+clean is 2 or greater, cleans all buildable packages.
+*/
+int Builder::do_clean()
+{
+	// Cleaning doesn't care about ordering, so a simpler method can be used
+
+	set<Target *> clean_tgts;
+	TargetList queue;
+	queue.push_back(get_target("cmdline"));
+
+	while(!queue.empty())
+	{
+		Target *tgt=queue.front();
+		queue.erase(queue.begin());
+
+		if(tgt->get_buildable() && (tgt->get_package()==main_pkg || clean>=2))
+			clean_tgts.insert(tgt);
+
+		const TargetList &deps=tgt->get_depends();
+		for(TargetList::const_iterator i=deps.begin(); i!=deps.end(); ++i)
+			if(!clean_tgts.count(*i))
+				queue.push_back(*i);
+	}
+
+	for(set<Target *>::iterator i=clean_tgts.begin(); i!=clean_tgts.end(); ++i)
+	{
+		Action *action=new Unlink(*this, **i);
+		while(action->check()<0);
+		delete action;
+	}
+
+	return 0;
+}
+
+/**
+Prints out information about the default package.
+*/
+void Builder::package_help()
+{
+	const Config &config=main_pkg->get_config();
+	const Config::OptionMap &options=config.get_options();
+
+	cout<<"Required packages:\n  ";
+	const PackageList &requires=main_pkg->get_requires();
+	for(PackageList::const_iterator i=requires.begin(); i!=requires.end(); ++i)
+	{
+		if(i!=requires.begin())
+			cout<<", ";
+		cout<<(*i)->get_name();
+	}
+	cout<<"\n\n";
+	cout<<"Package configuration:\n";
+	for(Config::OptionMap::const_iterator i=options.begin(); i!=options.end(); ++i)
+	{
+		const Config::Option &opt=i->second;
+		cout<<"  "<<opt.name<<": "<<opt.descr<<" ("<<opt.value<<") ["<<opt.defv<<"]\n";
+	}
 }
 
 Application::RegApp<Builder> Builder::reg;
 
-Builder::Loader::Loader(Builder &b, const Path::Path &s):
+
+Builder::Loader::Loader(Builder &b, const Path &s):
 	bld(b),
 	src(s)
 {
+	add("architecture", &Loader::architecture);
+	add("binary_package", &Loader::binpkg);
+	add("profile", &Loader::profile);
 	add("package", &Loader::package);
 }
 
+void Builder::Loader::architecture(const string &n)
+{
+	Architecture arch(bld, n);
+	load_sub(arch);
+	bld.archs.insert(ArchMap::value_type(n, arch));
+}
+
+void Builder::Loader::binpkg(const string &n)
+{
+	BinaryPackage *pkg=new BinaryPackage(bld, n);
+	load_sub(*pkg);
+	bld.packages.insert(PackageMap::value_type(n, pkg));
+}
+
+void Builder::Loader::profile(const string &n)
+{
+	StringMap prf;
+	load_sub<ProfileLoader>(prf);
+	bld.profile_tmpl.insert(ProfileTemplateMap::value_type(n, prf));
+}
+
 void Builder::Loader::package(const string &n)
 {
-	Package *pkg=new Package(bld, n, src);
+	SourcePackage *pkg=new SourcePackage(bld, n, src);
+	if(!bld.main_pkg)
+		bld.main_pkg=pkg;
+
 	load_sub(*pkg);
 	bld.packages.insert(PackageMap::value_type(n, pkg));
-	bld.new_pkgs.push_back(pkg);
-	//cout<<"loaded "<<pkg->get_name()<<'\n';
 }
 
+
+Builder::ProfileLoader::ProfileLoader(StringMap &p):
+	profile(p)
+{
+	add("option", &ProfileLoader::option);
+}
+
+void Builder::ProfileLoader::option(const string &o, const string &v)
+{
+	profile.insert(StringMap::value_type(o, v));
+}