diff -r 41300fa6a67c -r f7bc934e204c util/tools/configure/environment.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/util/tools/configure/environment.cpp	Wed Mar 31 11:06:36 2010 +0300
@@ -0,0 +1,470 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the tools applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "environment.h"
+
+#include <process.h>
+#include <iostream>
+#include <qdebug.h>
+#include <QDir>
+#include <QStringList>
+#include <QMap>
+#include <QDir>
+#include <QFile>
+#include <QFileInfo>
+
+//#define CONFIGURE_DEBUG_EXECUTE
+//#define CONFIGURE_DEBUG_CP_DIR
+
+using namespace std;
+
+#ifdef Q_OS_WIN32
+#include <qt_windows.h>
+#endif
+
+#include <symbian/epocroot.h> // from tools/shared
+#include <windows/registry.h> // from tools/shared
+
+QT_BEGIN_NAMESPACE
+
+struct CompilerInfo{
+    Compiler compiler;
+    const char *compilerStr;
+    const char *regKey;
+    const char *executable;
+} compiler_info[] = {
+    // The compilers here are sorted in a reversed-preferred order
+    {CC_BORLAND, "Borland C++",                                                    0, "bcc32.exe"},
+    {CC_MINGW,   "MinGW (Minimalist GNU for Windows)",                             0, "mingw32-gcc.exe"},
+    {CC_INTEL,   "Intel(R) C++ Compiler for 32-bit applications",                  0, "icl.exe"}, // xilink.exe, xilink5.exe, xilink6.exe, xilib.exe
+    {CC_MSVC6,   "Microsoft (R) 32-bit C/C++ Optimizing Compiler (6.x)",           "Software\\Microsoft\\VisualStudio\\6.0\\Setup\\Microsoft Visual C++\\ProductDir", "cl.exe"}, // link.exe, lib.exe
+    {CC_NET2002, "Microsoft (R) 32-bit C/C++ Optimizing Compiler.NET 2002 (7.0)",  "Software\\Microsoft\\VisualStudio\\7.0\\Setup\\VC\\ProductDir", "cl.exe"}, // link.exe, lib.exe
+    {CC_NET2003, "Microsoft (R) 32-bit C/C++ Optimizing Compiler.NET 2003 (7.1)",  "Software\\Microsoft\\VisualStudio\\7.1\\Setup\\VC\\ProductDir", "cl.exe"}, // link.exe, lib.exe
+    {CC_NET2005, "Microsoft (R) 32-bit C/C++ Optimizing Compiler.NET 2005 (8.0)",  "Software\\Microsoft\\VisualStudio\\SxS\\VC7\\8.0", "cl.exe"}, // link.exe, lib.exe
+    {CC_NET2008, "Microsoft (R) 32-bit C/C++ Optimizing Compiler.NET 2008 (9.0)",  "Software\\Microsoft\\VisualStudio\\SxS\\VC7\\9.0", "cl.exe"}, // link.exe, lib.exe
+    {CC_UNKNOWN, "Unknown", 0, 0},
+};
+
+
+// Initialize static variables
+Compiler Environment::detectedCompiler = CC_UNKNOWN;
+
+/*!
+    Returns the pointer to the CompilerInfo for a \a compiler.
+*/
+CompilerInfo *Environment::compilerInfo(Compiler compiler)
+{
+    int i = 0;
+    while(compiler_info[i].compiler != compiler && compiler_info[i].compiler != CC_UNKNOWN)
+        ++i;
+    return &(compiler_info[i]);
+}
+
+/*!
+    Returns the qmakespec for the compiler detected on the system.
+*/
+QString Environment::detectQMakeSpec()
+{
+    QString spec;
+    switch (detectCompiler()) {
+    case CC_NET2008:
+        spec = "win32-msvc2008";
+        break;
+    case CC_NET2005:
+        spec = "win32-msvc2005";
+        break;
+    case CC_NET2003:
+        spec = "win32-msvc2003";
+        break;
+    case CC_NET2002:
+        spec = "win32-msvc2002";
+        break;
+    case CC_MSVC4:
+    case CC_MSVC5:
+    case CC_MSVC6:
+        spec = "win32-msvc";
+        break;
+    case CC_INTEL:
+        spec = "win32-icc";
+        break;
+    case CC_MINGW:
+        spec = "win32-g++";
+        break;
+    case CC_BORLAND:
+        spec = "win32-borland";
+        break;
+    default:
+        break;
+    }
+
+    return spec;
+}
+
+/*!
+    Returns the enum of the compiler which was detected on the system.
+    The compilers are detected in the order as entered into the
+    compiler_info list.
+
+    If more than one compiler is found, CC_UNKNOWN is returned.
+*/
+Compiler Environment::detectCompiler()
+{
+#ifndef Q_OS_WIN32
+    return MSVC6; // Always generate MSVC 6.0 versions on other platforms
+#else
+    if(detectedCompiler != CC_UNKNOWN)
+        return detectedCompiler;
+
+    int installed = 0;
+
+    // Check for compilers in registry first, to see which version is in PATH
+    QString paths = qgetenv("PATH");
+    QStringList pathlist = paths.toLower().split(";");
+    for(int i = 0; compiler_info[i].compiler; ++i) {
+        QString productPath = readRegistryKey(HKEY_LOCAL_MACHINE, compiler_info[i].regKey).toLower();
+        if (productPath.length()) {
+            QStringList::iterator it;
+            for(it = pathlist.begin(); it != pathlist.end(); ++it) {
+                if((*it).contains(productPath)) {
+                    ++installed;
+                    detectedCompiler = compiler_info[i].compiler;
+                    break;
+                }
+            }
+        }
+    }
+
+    // Now just go looking for the executables, and accept any executable as the lowest version
+    if (!installed) {
+        for(int i = 0; compiler_info[i].compiler; ++i) {
+            QString executable = QString(compiler_info[i].executable).toLower();
+            if (executable.length() && Environment::detectExecutable(executable)) {
+                ++installed;
+                detectedCompiler = compiler_info[i].compiler;
+                break;
+            }
+        }
+    }
+
+    if (installed > 1) {
+        cout << "Found more than one known compiler! Using \"" << compilerInfo(detectedCompiler)->compilerStr << "\"" << endl;
+        detectedCompiler = CC_UNKNOWN;
+    }
+    return detectedCompiler;
+#endif
+};
+
+/*!
+    Returns true if the \a executable could be loaded, else false.
+    This means that the executable either is in the current directory
+    or in the PATH.
+*/
+bool Environment::detectExecutable(const QString &executable)
+{
+    PROCESS_INFORMATION procInfo;
+    memset(&procInfo, 0, sizeof(procInfo));
+
+    STARTUPINFO startInfo;
+    memset(&startInfo, 0, sizeof(startInfo));
+    startInfo.cb = sizeof(startInfo);
+
+    bool couldExecute = CreateProcess(0, (wchar_t*)executable.utf16(),
+                                      0, 0, false,
+                                      CREATE_NO_WINDOW | CREATE_SUSPENDED,
+                                      0, 0, &startInfo, &procInfo);
+
+    if (couldExecute) {
+        CloseHandle(procInfo.hThread);
+        TerminateProcess(procInfo.hProcess, 0);
+        CloseHandle(procInfo.hProcess);
+    }
+    return couldExecute;
+}
+
+/*!
+    Creates a commandling from \a program and it \a arguments,
+    escaping characters that needs it.
+*/
+static QString qt_create_commandline(const QString &program, const QStringList &arguments)
+{
+    QString programName = program;
+    if (!programName.startsWith("\"") && !programName.endsWith("\"") && programName.contains(" "))
+        programName = "\"" + programName + "\"";
+    programName.replace("/", "\\");
+
+    QString args;
+    // add the prgram as the first arrg ... it works better
+    args = programName + " ";
+    for (int i=0; i<arguments.size(); ++i) {
+        QString tmp = arguments.at(i);
+        // in the case of \" already being in the string the \ must also be escaped
+        tmp.replace( "\\\"", "\\\\\"" );
+        // escape a single " because the arguments will be parsed
+        tmp.replace( "\"", "\\\"" );
+        if (tmp.isEmpty() || tmp.contains(' ') || tmp.contains('\t')) {
+            // The argument must not end with a \ since this would be interpreted
+            // as escaping the quote -- rather put the \ behind the quote: e.g.
+            // rather use "foo"\ than "foo\"
+            QString endQuote("\"");
+            int i = tmp.length();
+            while (i>0 && tmp.at(i-1) == '\\') {
+                --i;
+                endQuote += "\\";
+            }
+            args += QString(" \"") + tmp.left(i) + endQuote;
+        } else {
+            args += ' ' + tmp;
+        }
+    }
+    return args;
+}
+
+/*!
+    Creates a QByteArray of the \a environment.
+*/
+static QByteArray qt_create_environment(const QStringList &environment)
+{
+    QByteArray envlist;
+    if (environment.isEmpty())
+        return envlist;
+
+    int pos = 0;
+    // add PATH if necessary (for DLL loading)
+    QByteArray path = qgetenv("PATH");
+    if (environment.filter(QRegExp("^PATH=",Qt::CaseInsensitive)).isEmpty() && !path.isNull()) {
+            QString tmp = QString(QLatin1String("PATH=%1")).arg(QString::fromLocal8Bit(path));
+            uint tmpSize = sizeof(wchar_t) * (tmp.length() + 1);
+            envlist.resize(envlist.size() + tmpSize);
+            memcpy(envlist.data() + pos, tmp.utf16(), tmpSize);
+            pos += tmpSize;
+    }
+    // add the user environment
+    for (QStringList::ConstIterator it = environment.begin(); it != environment.end(); it++ ) {
+            QString tmp = *it;
+            uint tmpSize = sizeof(wchar_t) * (tmp.length() + 1);
+            envlist.resize(envlist.size() + tmpSize);
+            memcpy(envlist.data() + pos, tmp.utf16(), tmpSize);
+            pos += tmpSize;
+    }
+    // add the 2 terminating 0 (actually 4, just to be on the safe side)
+    envlist.resize(envlist.size() + 4);
+    envlist[pos++] = 0;
+    envlist[pos++] = 0;
+    envlist[pos++] = 0;
+    envlist[pos++] = 0;
+
+    return envlist;
+}
+
+/*!
+    Executes the command described in \a arguments, in the
+    environment inherited from the parent process, with the
+    \a additionalEnv settings applied.
+    \a removeEnv removes the specified environment variables from
+    the environment of the executed process.
+
+    Returns the exit value of the process, or -1 if the command could
+    not be executed.
+
+    This function uses _(w)spawnvpe to spawn a process by searching
+    through the PATH environment variable.
+*/
+int Environment::execute(QStringList arguments, const QStringList &additionalEnv, const QStringList &removeEnv)
+{
+#ifdef CONFIGURE_DEBUG_EXECUTE
+    qDebug() << "About to Execute: " << arguments;
+    qDebug() << "   " << QDir::currentPath();
+    qDebug() << "   " << additionalEnv;
+    qDebug() << "   " << removeEnv;
+#endif
+    // Create the full environment from the current environment and
+    // the additionalEnv strings, then remove all variables defined
+    // in removeEnv
+    QMap<QString, QString> fullEnvMap;
+    LPWSTR envStrings = GetEnvironmentStrings();
+    if (envStrings) {
+        int strLen = 0;
+        for (LPWSTR envString = envStrings; *(envString); envString += strLen + 1) {
+            strLen = wcslen(envString);
+            QString str = QString((const QChar*)envString, strLen);
+            if (!str.startsWith("=")) { // These are added by the system
+                int sepIndex = str.indexOf('=');
+                fullEnvMap.insert(str.left(sepIndex).toUpper(), str.mid(sepIndex +1));
+            }
+        }
+    }
+    FreeEnvironmentStrings(envStrings);
+
+    // Add additionalEnv variables
+    for (int i = 0; i < additionalEnv.count(); ++i) {
+        const QString &str = additionalEnv.at(i);
+        int sepIndex = str.indexOf('=');
+        fullEnvMap.insert(str.left(sepIndex).toUpper(), str.mid(sepIndex +1));
+    }
+
+    // Remove removeEnv variables
+    for (int j = 0; j < removeEnv.count(); ++j)
+        fullEnvMap.remove(removeEnv.at(j).toUpper());
+
+    // Add all variables to a QStringList
+    QStringList fullEnv;
+    QMapIterator<QString, QString> it(fullEnvMap);
+    while (it.hasNext()) {
+        it.next();
+        fullEnv += QString(it.key() + "=" + it.value());
+    }
+
+    // ----------------------------
+    QString program = arguments.takeAt(0);
+    QString args = qt_create_commandline(program, arguments);
+    QByteArray envlist = qt_create_environment(fullEnv);
+
+    DWORD exitCode = -1;
+    PROCESS_INFORMATION procInfo;
+    memset(&procInfo, 0, sizeof(procInfo));
+
+    STARTUPINFO startInfo;
+    memset(&startInfo, 0, sizeof(startInfo));
+    startInfo.cb = sizeof(startInfo);
+
+    bool couldExecute = CreateProcess(0, (wchar_t*)args.utf16(),
+                                      0, 0, true, CREATE_UNICODE_ENVIRONMENT,
+                                      envlist.isEmpty() ? 0 : envlist.data(),
+                                      0, &startInfo, &procInfo);
+
+    if (couldExecute) {
+        WaitForSingleObject(procInfo.hProcess, INFINITE);
+        GetExitCodeProcess(procInfo.hProcess, &exitCode);
+        CloseHandle(procInfo.hThread);
+        CloseHandle(procInfo.hProcess);
+    }
+
+
+    if (exitCode == -1) {
+        switch(GetLastError()) {
+        case E2BIG:
+            cerr << "execute: Argument list exceeds 1024 bytes" << endl;
+            foreach(QString arg, arguments)
+                cerr << "   (" << arg.toLocal8Bit().constData() << ")" << endl;
+            break;
+        case ENOENT:
+            cerr << "execute: File or path is not found (" << program.toLocal8Bit().constData() << ")" << endl;
+            break;
+        case ENOEXEC:
+            cerr << "execute: Specified file is not executable or has invalid executable-file format (" << program.toLocal8Bit().constData() << ")" << endl;
+            break;
+        case ENOMEM:
+            cerr << "execute: Not enough memory is available to execute new process." << endl;
+            break;
+        default:
+            cerr << "execute: Unknown error" << endl;
+            foreach(QString arg, arguments)
+                cerr << "   (" << arg.toLocal8Bit().constData() << ")" << endl;
+            break;
+        }
+    }
+    return exitCode;
+}
+
+bool Environment::cpdir(const QString &srcDir, const QString &destDir)
+{
+    QString cleanSrcName = QDir::cleanPath(srcDir);
+    QString cleanDstName = QDir::cleanPath(destDir);
+#ifdef CONFIGURE_DEBUG_CP_DIR
+    qDebug() << "Attempt to cpdir " << cleanSrcName << "->" << cleanDstName;
+#endif
+    if(!QFile::exists(cleanDstName) && !QDir().mkpath(cleanDstName)) {
+	qDebug() << "cpdir: Failure to create " << cleanDstName;
+	return false;
+    }
+
+    bool result = true;
+    QDir dir = QDir(cleanSrcName);
+    QFileInfoList allEntries = dir.entryInfoList(QDir::AllDirs | QDir::Files | QDir::NoDotAndDotDot);
+    for (int i = 0; result && (i < allEntries.count()); ++i) {
+        QFileInfo entry = allEntries.at(i);
+	bool intermediate = true;
+        if (entry.isDir()) {
+            intermediate = cpdir(QString("%1/%2").arg(cleanSrcName).arg(entry.fileName()),
+                            QString("%1/%2").arg(cleanDstName).arg(entry.fileName()));
+        } else {
+            QString destFile = QString("%1/%2").arg(cleanDstName).arg(entry.fileName());
+#ifdef CONFIGURE_DEBUG_CP_DIR
+	    qDebug() << "About to cp (file)" << entry.absoluteFilePath() << "->" << destFile;
+#endif
+	    QFile::remove(destFile);
+            intermediate = QFile::copy(entry.absoluteFilePath(), destFile);
+            SetFileAttributes((wchar_t*)destFile.utf16(), FILE_ATTRIBUTE_NORMAL);
+        }
+	if(!intermediate) {
+	    qDebug() << "cpdir: Failure for " << entry.fileName() << entry.isDir();
+	    result = false;
+	}
+    }
+    return result;
+}
+
+bool Environment::rmdir(const QString &name)
+{
+    bool result = true;
+    QString cleanName = QDir::cleanPath(name);
+
+    QDir dir = QDir(cleanName);
+    QFileInfoList allEntries = dir.entryInfoList(QDir::AllDirs | QDir::Files | QDir::NoDotAndDotDot);
+    for (int i = 0; result && (i < allEntries.count()); ++i) {
+        QFileInfo entry = allEntries.at(i);
+        if (entry.isDir()) {
+            result &= rmdir(entry.absoluteFilePath());
+        } else {
+            result &= QFile::remove(entry.absoluteFilePath());
+        }
+    }
+    result &= dir.rmdir(cleanName);
+    return result;
+}
+
+QString Environment::symbianEpocRoot()
+{
+    // Call function defined in tools/shared/symbian/epocroot.h
+    return ::epocRoot();
+}
+
+QT_END_NAMESPACE