metamakefile.cpp

qtmake 文件的代码

/****************************************************************************
**
** Copyright (C) 1992-2006 Trolltech ASA. All rights reserved.
**
** This file is part of the qmake application of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file.  Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http://www.trolltech.com/products/qt/opensource.html
**
** If you are unsure which license is appropriate for your use, please
** review the following information:
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** sales department at [e-mail].
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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****************************************************************************/

#include "metamakefile.h"
#include "qregexp.h"
#include "qdir.h"
#include "makefile.h"
#include "project.h"
#include "cachekeys.h"

#define BUILDSMETATYPE 1
#define SUBDIRSMETATYPE 2

MetaMakefileGenerator::~MetaMakefileGenerator()
{
    if(own_project)
        delete project;
}

class BuildsMetaMakefileGenerator : public MetaMakefileGenerator
{
    bool init_flag;
private:
    struct Build {
        QString name;
        MakefileGenerator *makefile;
    };
    QList<Build *> makefiles;
    void clearBuilds();
    MakefileGenerator *processBuild(const QString &);

public:

    BuildsMetaMakefileGenerator(QMakeProject *p, bool op) : MetaMakefileGenerator(p, op), init_flag(false) { }
    virtual ~BuildsMetaMakefileGenerator() { clearBuilds(); }

    virtual bool init();
    virtual int type() const { return BUILDSMETATYPE; }
    virtual bool write(const QString &);
};

void
BuildsMetaMakefileGenerator::clearBuilds()
{
    for(int i = 0; i < makefiles.count(); i++) {
        Build *build = makefiles[i];
        if(QMakeProject *p = build->makefile->projectFile()) {
            if(p != project)
                delete p;
        }
        delete build->makefile;
        delete build;
    }
    makefiles.clear();
}

bool
BuildsMetaMakefileGenerator::init()
{
    if(init_flag)
        return false;
    init_flag = true;

    const QStringList &builds = project->variables()["BUILDS"];
    bool use_single_build = builds.isEmpty();
    if(builds.count() > 1 && Option::output.fileName() == "-") {
        use_single_build = true;
        warn_msg(WarnLogic, "Cannot direct to stdout when using multiple BUILDS.");
    } else if(0 && !use_single_build && project->first("TEMPLATE") == "subdirs") {
        use_single_build = true;
        warn_msg(WarnLogic, "Cannot specify multiple builds with TEMPLATE subdirs.");
    }
    if(!use_single_build) {
        for(int i = 0; i < builds.count(); i++) {
            QString build = builds[i];
            MakefileGenerator *makefile = processBuild(build);
            if(!makefile)
                return false;
            if(!makefile->supportsMetaBuild()) {
                warn_msg(WarnLogic, "QMAKESPEC does not support multiple BUILDS.");
                clearBuilds();
                use_single_build = true;
                break;
            } else {
                Build *b = new Build;
                if(builds.count() != 1)
                    b->name = build;
                b->makefile = makefile;
                makefiles += b;
            }
        }
    }
    if(use_single_build) {
        Build *build = new Build;
        build->makefile = createMakefileGenerator(project, false);
        makefiles += build;
    }
    return true;
}

bool
BuildsMetaMakefileGenerator::write(const QString &oldpwd)
{
    Build *glue = 0;
    if(!makefiles.isEmpty() && !makefiles.first()->name.isNull()) {
        glue = new Build;
        glue->makefile = createMakefileGenerator(project, true);
        makefiles += glue;
    }

    bool ret = true;
    const QString &output_name = Option::output.fileName();
    for(int i = 0; ret && i < makefiles.count(); i++) {
        Option::output.setFileName(output_name);
        Build *build = makefiles[i];

        bool using_stdout = false;
        if(build->makefile && (Option::qmake_mode == Option::QMAKE_GENERATE_MAKEFILE ||
                               Option::qmake_mode == Option::QMAKE_GENERATE_PROJECT)
           && (!build->makefile->supportsMergedBuilds()
            || (build->makefile->supportsMergedBuilds() && (!glue || build == glue)))) {
            //open output
            if(!(Option::output.isOpen())) {
                if(Option::output.fileName() == "-") {
                    Option::output.setFileName("");
                    Option::output_dir = qmake_getpwd();
                    Option::output.open(stdout, QIODevice::WriteOnly | QIODevice::Text);
                    using_stdout = true;
                } else {
                    if(Option::output.fileName().isEmpty() && Option::qmake_mode == Option::QMAKE_GENERATE_MAKEFILE)
                        Option::output.setFileName(project->first("QMAKE_MAKEFILE"));
                    Option::output_dir = oldpwd;
                    if(!build->makefile->openOutput(Option::output, build->name)) {
                        fprintf(stderr, "Failure to open file: %s\n",
                                Option::output.fileName().isEmpty() ? "(stdout)" :
                                Option::output.fileName().toLatin1().constData());
                        return false;
                    }
                }
            }
        } else {
           using_stdout = true; //kind of..
        }

        if(!build->makefile) {
            ret = false;
        } else if(build == glue) {
            ret = build->makefile->writeProjectMakefile();
        } else {
            ret = build->makefile->write();
            if (glue && glue->makefile->supportsMergedBuilds())
                ret = glue->makefile->mergeBuildProject(build->makefile);
        }
        if(!using_stdout) {
            Option::output.close();
            if(!ret)
                Option::output.remove();
        }

        // debugging
        if(Option::debug_level) {
            QMap<QString, QStringList> &vars = project->variables();
            for(QMap<QString, QStringList>::Iterator it = vars.begin(); it != vars.end(); ++it) {
                if(!it.key().startsWith(".") && !it.value().isEmpty())
                    debug_msg(1, "%s === %s", it.key().toLatin1().constData(),
                              it.value().join(" :: ").toLatin1().constData());
            }
        }
    }
    return ret;
}

MakefileGenerator
*BuildsMetaMakefileGenerator::processBuild(const QString &build)
{
    if(project) {
        debug_msg(1, "Meta Generator: Parsing '%s' for build [%s].",
                  project->projectFile().toLatin1().constData(),build.toLatin1().constData());

        //initialize the base
        QMap<QString, QStringList> basevars;
        if(!project->isEmpty(build + ".CONFIG"))
            basevars["CONFIG"] += project->values(build + ".CONFIG");
        basevars["CONFIG"] += build;
        basevars["CONFIG"] += "build_pass";
        basevars["BUILD_PASS"] = QStringList(build);
        QStringList buildname = project->values(build + ".name");
        basevars["BUILD_NAME"] = (buildname.isEmpty() ? QStringList(build) : buildname);

        //create project
        QMakeProject *build_proj = new QMakeProject(project->properities(), basevars);

        //all the user configs must be set again afterwards (for .pro tests and for .prf tests)
        const QStringList old_after_user_config = Option::after_user_configs;
        const QStringList old_user_config = Option::user_configs;
        Option::after_user_configs += basevars["CONFIG"];
        Option::user_configs += basevars["CONFIG"];
        build_proj->read(project->projectFile());
        Option::after_user_configs = old_after_user_config;
        Option::user_configs = old_user_config;