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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing
**
** This file is part of the Qt Build Suite.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms and
** conditions see http://www.qt.io/terms-conditions. For further information
** use the contact form at http://www.qt.io/contact-us.
**
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
#include "compilerversion.h"
#include <tools/error.h>
#include <tools/profile.h>
#include <tools/version.h>
#include <QByteArray>
#include <QDir>
#include <QProcess>
#include <QScopedPointer>
#include <QStringList>
#include <QTemporaryFile>
using namespace qbs;
using namespace qbs::Internal;
static QString mkStr(const char *s) { return QString::fromLocal8Bit(s); }
static QString mkStr(const QByteArray &ba) { return mkStr(ba.constData()); }
class TemporaryEnvChanger
{
public:
TemporaryEnvChanger(const QProcessEnvironment &envChanges)
{
QProcessEnvironment currentEnv = QProcessEnvironment::systemEnvironment();
foreach (const QString &key, envChanges.keys()) {
m_changesToRestore.insert(key, currentEnv.value(key));
qputenv(qPrintable(key), qPrintable(envChanges.value(key)));
}
}
~TemporaryEnvChanger()
{
foreach (const QString &key, m_changesToRestore.keys())
qputenv(qPrintable(key), qPrintable(m_changesToRestore.value(key)));
}
private:
QProcessEnvironment m_changesToRestore;
};
static QByteArray runProcess(const QString &exeFilePath, const QStringList &args,
const QProcessEnvironment &env = QProcessEnvironment())
{
TemporaryEnvChanger envChanger(env);
QProcess process;
process.start(exeFilePath, args);
if (!process.waitForStarted() || !process.waitForFinished()
|| process.exitStatus() != QProcess::NormalExit) {
throw ErrorInfo(mkStr("Could not run %1 (%2)").arg(exeFilePath, process.errorString()));
}
if (process.exitCode() != 0) {
ErrorInfo e(mkStr("Process '%1' failed with exit code %2.")
.arg(exeFilePath).arg(process.exitCode()));
const QByteArray stdErr = process.readAllStandardError();
if (!stdErr.isEmpty())
e.append(mkStr("stderr was: %1").arg(mkStr(stdErr)));
const QByteArray stdOut = process.readAllStandardOutput();
if (!stdOut.isEmpty())
e.append(mkStr("stdout was: %1").arg(mkStr(stdOut)));
throw e;
}
return process.readAllStandardOutput().trimmed();
}
static Version getGccVersion(const QString &compilerFilePath, const QStringList &qbsToolchain)
{
QByteArray majorKey;
QByteArray minorKey;
QByteArray patchKey;
if (qbsToolchain.contains(QLatin1String("clang"))) {
majorKey = "__clang_major__";
minorKey = "__clang_minor__";
patchKey = "__clang_patchlevel__";
} else {
majorKey = "__GNUC__";
minorKey = "__GNUC_MINOR__";
patchKey = "__GNUC_PATCHLEVEL__";
}
QTemporaryFile dummyFile;
if (!dummyFile.open())
throw ErrorInfo(mkStr("Could not create temporary file (%1)").arg(dummyFile.errorString()));
dummyFile.close();
const QStringList compilerArgs = QStringList() << QLatin1String("-E") << QLatin1String("-dM")
<< QLatin1String("-x") << QLatin1String("c")
<< QLatin1String("-c") << dummyFile.fileName();
const QByteArray compilerOutput = runProcess(compilerFilePath, compilerArgs);
if (compilerOutput.isEmpty())
throw ErrorInfo(mkStr("Could not extract version from compiler output."));
const QList<QByteArray> lines = compilerOutput.split('\n');
QList<QByteArray> keyParts = QList<QByteArray>() << majorKey << minorKey << patchKey;
QStringList versionParts = QStringList() << QString() << QString() << QString();
int partsFound = 0;
foreach (const QByteArray &line, lines) {
for (int i = 0; i < keyParts.count() && partsFound < keyParts.count(); ++i) {
QString &versionPart = versionParts[i];
if (!versionPart.isEmpty())
continue;
const QByteArray cleanLine = line.simplified();
const QByteArray keyPart = "#define " + keyParts.at(i) + ' ';
if (!cleanLine.startsWith(keyPart))
continue;
versionPart = QString::fromLatin1(cleanLine.mid(keyPart.count()));
++partsFound;
}
}
if (partsFound < keyParts.count())
throw ErrorInfo(mkStr("Failed to extract version from compiler output."));
const Version version = Version::fromString(versionParts.at(0) + QLatin1Char('.')
+ versionParts.at(1) + QLatin1Char('.') + versionParts.at(2));
if (!version.isValid())
throw ErrorInfo(mkStr("Failed to extract version from compiler output."));
return version;
}
class DummyFile {
public:
DummyFile(const QString &fp) : filePath(fp) { }
~DummyFile() { QFile::remove(filePath); }
const QString filePath;
};
static Version getMsvcVersion(const QString &compilerFilePath,
const QProcessEnvironment &compilerEnv)
{
const QScopedPointer<QTemporaryFile> dummyFile(
new QTemporaryFile(QDir::tempPath() + QLatin1String("/qbs_dummy")));
if (!dummyFile->open()) {
throw ErrorInfo(mkStr("Could not create temporary file (%1)")
.arg(dummyFile->errorString()));
}
const QByteArray magicPrefix = "int version = ";
dummyFile->write(magicPrefix + "_MSC_FULL_VER\r\n");
dummyFile->close();
// We cannot use the temporary file itself, as Qt has a lock on it
// even after it was closed, causing a "Permission denied" message from MSVC.
const QString actualDummyFilePath = dummyFile->fileName() + QLatin1String(".1");
const QString nativeDummyFilePath = QDir::toNativeSeparators(actualDummyFilePath);
if (!QFile::copy(dummyFile->fileName(), actualDummyFilePath)) {
throw ErrorInfo(mkStr("Could not create source '%1' file for compiler.")
.arg(nativeDummyFilePath));
}
DummyFile actualDummyFile(actualDummyFilePath);
const QString preprocessedFilePath = nativeDummyFilePath + QLatin1String(".i");
const QStringList compilerArgs = QStringList() << QLatin1String("/nologo")
<< QLatin1String("/P") << nativeDummyFilePath
<< (QLatin1String("/Fi") + preprocessedFilePath);
runProcess(compilerFilePath, compilerArgs, compilerEnv);
QFile preprocessedFile(preprocessedFilePath);
if (!preprocessedFile.open(QIODevice::ReadOnly)) {
throw ErrorInfo(mkStr("Cannot read preprocessed file '%1' (%2)")
.arg(preprocessedFilePath, preprocessedFile.errorString()));
}
QString versionString;
foreach (const QByteArray &line, preprocessedFile.readAll().split('\n')) {
const QByteArray cleanLine = line.trimmed();
if (cleanLine.startsWith(magicPrefix)) {
versionString = QString::fromLocal8Bit(cleanLine.mid(magicPrefix.count()));
break;
}
}
if (versionString.isEmpty())
throw ErrorInfo(mkStr("No version number found in preprocessed file."));
if (versionString.count() < 5)
throw ErrorInfo(mkStr("Version number '%1' not understood.").arg(versionString));
versionString.insert(2, QLatin1Char('.')).insert(5, QLatin1Char('.'));
const Version version = Version::fromString(versionString);
if (!version.isValid())
throw ErrorInfo(mkStr("Invalid version string '%1'.").arg(versionString));
return version;
}
void setCompilerVersion(const QString &compilerFilePath, const QStringList &qbsToolchain,
Profile &profile, const QProcessEnvironment &compilerEnv)
{
try {
Version version;
if (qbsToolchain.contains(QLatin1String("gcc")))
version = getGccVersion(compilerFilePath, qbsToolchain);
else if (qbsToolchain.contains(QLatin1String("msvc")))
version = getMsvcVersion(compilerFilePath, compilerEnv);
if (version.isValid()) {
profile.setValue(QLatin1String("cpp.compilerVersionMajor"), version.majorVersion());
profile.setValue(QLatin1String("cpp.compilerVersionMinor"), version.minorVersion());
profile.setValue(QLatin1String("cpp.compilerVersionPatch"), version.patchLevel());
}
} catch (const ErrorInfo &e) {
qDebug("Warning: Failed to retrieve compiler version: %s", qPrintable(e.toString()));
}
}
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