makefile.cpp

qtmake 文件的代码

        QString &val = l[val_it];
        if(!val.isEmpty()) {
            QString file = fixEnvVariables(val);
            if(!(flags & VPATH_NoFixify))
                file = fileFixify(file, qmake_getpwd(), Option::output_dir);
            if (file.at(0) == '\"' && file.at(file.length() - 1) == '\"')
                file = file.mid(1, file.length() - 2);

            if(exists(file)) {
                ++val_it;
                continue;
            }
            bool found = false;
            if(QDir::isRelativePath(val)) {
                if(vpath.isEmpty()) {
                    if(!vpath_var.isEmpty())
                        vpath = v[vpath_var];
                    vpath += v["VPATH"] + v["QMAKE_ABSOLUTE_SOURCE_PATH"] + v["DEPENDPATH"];
                    if(Option::output_dir != qmake_getpwd())
                        vpath += Option::output_dir;
                }
                for(QStringList::Iterator vpath_it = vpath.begin();
                    vpath_it != vpath.end(); ++vpath_it) {
                    QString real_dir = Option::fixPathToLocalOS((*vpath_it));
                    if(exists(real_dir + QDir::separator() + val)) {
                        QString dir = (*vpath_it);
                        if(dir.right(Option::dir_sep.length()) != Option::dir_sep)
                            dir += Option::dir_sep;
                        val = dir + val;
                        if(!(flags & VPATH_NoFixify))
                            val = fileFixify(val);
                        found = true;
                        debug_msg(1, "Found file through vpath %s -> %s",
                                  file.toLatin1().constData(), val.toLatin1().constData());
                        break;
                    }
                }
            }
            if(!found) {
                QString dir, regex = val, real_dir;
                if(regex.lastIndexOf(Option::dir_sep) != -1) {
                    dir = regex.left(regex.lastIndexOf(Option::dir_sep) + 1);
                    real_dir = dir;
                    if(!(flags & VPATH_NoFixify))
                        real_dir = fileFixify(real_dir, qmake_getpwd(), Option::output_dir);
                    regex = regex.right(regex.length() - dir.length());
                }
                if(real_dir.isEmpty() || exists(real_dir)) {
                    QStringList files = QDir(real_dir).entryList(QStringList(regex));
                    if(files.isEmpty()) {
                        debug_msg(1, "%s:%d Failure to find %s in vpath (%s)",
                                  __FILE__, __LINE__,
                                  val.toLatin1().constData(), vpath.join("::").toLatin1().constData());
                        if(flags & VPATH_RemoveMissingFiles)
                            remove_file = true;
                        else if(flags & VPATH_WarnMissingFiles)
                            warn_msg(WarnLogic, "Failure to find: %s", val.toLatin1().constData());
                    } else {
                        l.removeAt(val_it);
                        QString a;
                        for(int i = (int)files.count()-1; i >= 0; i--) {
                            if(files[i] == "." || files[i] == "..")
                                continue;
                            a = dir + files[i];
                            if(!(flags & VPATH_NoFixify))
                                a = fileFixify(a);
                            l.insert(val_it, a);
                        }
                    }
                } else {
                    debug_msg(1, "%s:%d Cannot match %s%c%s, as %s does not exist.",
                              __FILE__, __LINE__, real_dir.toLatin1().constData(),
                              QDir::separator().toLatin1(),
                              regex.toLatin1().constData(), real_dir.toLatin1().constData());
                    if(flags & VPATH_RemoveMissingFiles)
                        remove_file = true;
                    else if(flags & VPATH_WarnMissingFiles)
                        warn_msg(WarnLogic, "Failure to find: %s", val.toLatin1().constData());
                }
            }
        }
        if(remove_file)
            l.removeAt(val_it);
        else
            ++val_it;
    }
    return l;
}

void
MakefileGenerator::initCompiler(const MakefileGenerator::Compiler &comp)
{
    QMap<QString, QStringList> &v = project->variables();
    QStringList &l = v[comp.variable_in];
    // find all the relevant file inputs
    if(!init_compiler_already.contains(comp.variable_in)) {
        init_compiler_already.insert(comp.variable_in, true);
        if(!noIO())
            l = findFilesInVPATH(l, (comp.flags & Compiler::CompilerRemoveNoExist) ?
                                 VPATH_RemoveMissingFiles : VPATH_WarnMissingFiles, "VPATH_" + comp.variable_in);
    }
}

void
MakefileGenerator::init()
{
    initOutPaths();
    if(init_already)
        return;
    verifyCompilers();
    init_already = true;

    QMap<QString, QStringList> &v = project->variables();
    QStringList &quc = v["QMAKE_EXTRA_COMPILERS"];

    //make sure the COMPILERS are in the correct input/output chain order
    for(int comp_out = 0, jump_count = 0; comp_out < quc.size(); ++comp_out) {
    continue_compiler_chain:
        if(jump_count > quc.size()) //just to avoid an infinite loop here
            break;
        if(project->variables().contains(quc.at(comp_out) + ".variable_out")) {
            const QStringList &outputs = project->variables().value(quc.at(comp_out) + ".variable_out");
            for(int out = 0; out < outputs.size(); ++out) {
                for(int comp_in = 0; comp_in < quc.size(); ++comp_in) {
                    if(comp_in == comp_out)
                        continue;
                    if(project->variables().contains(quc.at(comp_in) + ".input")) {
                        const QStringList &inputs = project->variables().value(quc.at(comp_in) + ".input");
                        for(int in = 0; in < inputs.size(); ++in) {
                            if(inputs.at(in) == outputs.at(out) && comp_out > comp_in) {
                                ++jump_count;
                                //move comp_out to comp_in and continue the compiler chain
                                quc.move(comp_out, comp_in);
                                comp_out = comp_in;
                                goto continue_compiler_chain;
                            }
                        }
                    }
                }
            }
        }
    }

    if(!project->isEmpty("QMAKE_SUBSTITUTES")) {
        const QStringList &subs = v["QMAKE_SUBSTITUTES"];
        for(int i = 0; i < subs.size(); ++i) {
            if(!subs.at(i).endsWith(".in")) {
                warn_msg(WarnLogic, "Substitute '%s' does not end with '.in'",
                         subs.at(i).toLatin1().constData());
                continue;
            }
            QFile in(fileFixify(subs.at(i))), out(fileInfo(subs.at(i)).fileName());
            if(out.fileName().endsWith(".in"))
                out.setFileName(out.fileName().left(out.fileName().length()-3));
            if(in.open(QFile::ReadOnly)) {
                QString contents;
                QStack<int> state;
                enum { IN_CONDITION, MET_CONDITION, PENDING_CONDITION };
                for(int count = 1; !in.atEnd(); ++count) {
                    QString line = QString::fromUtf8(in.readLine());
                    if(line.startsWith("!!IF ")) {
                        if(state.isEmpty() || state.top() == IN_CONDITION) {
                            QString test = line.mid(5, line.length()-(5+1));
                            if(project->test(test))
                                state.push(IN_CONDITION);
                            else
                                state.push(PENDING_CONDITION);
                        } else {
                            state.push(MET_CONDITION);
                        }
                    } else if(line.startsWith("!!ELIF ")) {
                        if(state.isEmpty()) {
                            warn_msg(WarnLogic, "(%s:%d): Unexpected else condition",
                                     in.fileName().toLatin1().constData(), count);
                        } else if(state.top() == PENDING_CONDITION) {
                            QString test = line.mid(7, line.length()-(7+1));
                            if(project->test(test))  {
                                state.pop();
                                state.push(IN_CONDITION);
                            }
                        } else if(state.top() == IN_CONDITION) {
                            state.pop();
                            state.push(MET_CONDITION);
                        }
                    } else if(line.startsWith("!!ELSE")) {
                        if(state.isEmpty()) {
                            warn_msg(WarnLogic, "(%s:%d): Unexpected else condition",
                                     in.fileName().toLatin1().constData(), count);
                        } else if(state.top() == PENDING_CONDITION) {
                            state.pop();
                            state.push(IN_CONDITION);
                        } else if(state.top() == IN_CONDITION) {
                            state.pop();
                            state.push(MET_CONDITION);
                        }
                    } else if(line.startsWith("!!ENDIF")) {
                        if(state.isEmpty())
                            warn_msg(WarnLogic, "(%s:%d): Unexpected endif",
                                     in.fileName().toLatin1().constData(), count);
                        else
                            state.pop();
                    } else if(state.isEmpty() || state.top() == IN_CONDITION) {
                        contents += project->expand(line);
                    }
                }
                if(out.exists() && out.open(QFile::ReadOnly)) {
                    QString old = QString::fromUtf8(out.readAll());
                    if(contents == old) {
                        v["QMAKE_INTERNAL_INCLUDED_FILES"].append(subs.at(i));
                        continue;
                    }
                    out.close();
                    if(!out.remove()) {
                        warn_msg(WarnLogic, "Cannot clear substitute '%s'",
                                 out.fileName().toLatin1().constData());
                        continue;
                    }
                }
                if(out.open(QFile::WriteOnly)) {
                    v["QMAKE_INTERNAL_INCLUDED_FILES"].append(subs.at(i));
                    out.write(contents.toUtf8());
                } else {
                    warn_msg(WarnLogic, "Cannot open substitute for output '%s'",
                             out.fileName().toLatin1().constData());
                }
            } else {
                warn_msg(WarnLogic, "Cannot open substitute for input '%s'",
                         in.fileName().toLatin1().constData());
            }
        }
    }

    int x;

    //build up a list of compilers
    QList<Compiler> compilers;
    {
        const char *builtins[] = { "OBJECTS", "LEXSOURCES", "YACCSOURCES", "SOURCES", "PRECOMPILED_HEADER", 0 };
        for(x = 0; builtins[x]; ++x) {
            Compiler compiler;
            compiler.variable_in = builtins[x];
            compiler.flags = Compiler::CompilerBuiltin;
            compiler.type = QMakeSourceFileInfo::TYPE_C;
            if(!strcmp(builtins[x], "OBJECTS"))
                compiler.flags |= Compiler::CompilerNoCheckDeps;
            compilers.append(compiler);
        }
        for(QStringList::ConstIterator it = quc.begin(); it != quc.end(); ++it) {
            if(!v[(*it) + ".output"].isEmpty()) {
                const QStringList &inputs = v[(*it) + ".input"];
                for(x = 0; x < inputs.size(); ++x) {
                    Compiler compiler;
                    compiler.variable_in = inputs.at(x);
                    compiler.flags = Compiler::CompilerNoFlags;
                    if(v[(*it) + ".CONFIG"].indexOf("ignore_no_exist") != -1)
                        compiler.flags |= Compiler::CompilerRemoveNoExist;
                    if(v[(*it) + ".CONFIG"].indexOf("no_dependencies") != -1)
                        compiler.flags |= Compiler::CompilerNoCheckDeps;

                    QString dep_type;
                    if(!project->isEmpty((*it) + ".dependency_type"))
                        dep_type = project->first((*it) + ".dependency_type");
                    if (dep_type.isEmpty())
                        compiler.type = QMakeSourceFileInfo::TYPE_UNKNOWN;
                    else if(dep_type == "TYPE_UI")
                        compiler.type = QMakeSourceFileInfo::TYPE_UI;
                    else
                        compiler.type = QMakeSourceFileInfo::TYPE_C;
                    compilers.append(compiler);
                }
            }
        }
    }

    { //do the path fixifying
        QStringList paths;
        for(x = 0; x < compilers.count(); ++x) {
            if(!paths.contains(compilers.at(x).variable_in))
                paths << compilers.at(x).variable_in;
        }
        paths << "INCLUDEPATH" << "QMAKE_INTERNAL_INCLUDED_FILES" << "PRECOMPILED_HEADER";
        for(int y = 0; y < paths.count(); y++) {
            QStringList &l = v[paths[y]];
            for(QStringList::Iterator it = l.begin(); it != l.end(); ++it) {
                if((*it).isEmpty())
                    continue;
                if(exists((*it)))
                    (*it) = fileFixify((*it));
            }
        }
    }

    if(noIO() || !doDepends())
        QMakeSourceFileInfo::setDependencyMode(QMakeSourceFileInfo::NonRecursive);
    for(x = 0; x < compilers.count(); ++x)
        initCompiler(compilers.at(x));

    //merge actual compiler outputs into their variable_out. This is done last so that