source: trunk/tools/configure/environment.cpp@ 1168

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#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_p.h> // from tools/shared
#include <windows/registry_p.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, "g++.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_NET2010, "Microsoft (R) 32-bit C/C++ Optimizing Compiler.NET 2010 (10.0)", "Software\\Microsoft\\VisualStudio\\SxS\\VC7\\10.0", "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_NET2010:
        spec = "win32-msvc2010";
        break;
    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 = qt_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);