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/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of PySide2.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** 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 https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "compilersupport.h"
#include "header_paths.h"
#include <QtCore/QDebug>
#include <QtCore/QProcess>
#include <QtCore/QStringList>
#include <string.h>
#include <algorithm>
#include <iterator>
namespace clang {
static bool runProcess(const QString &program, const QStringList &arguments,
QByteArray *stdOutIn = nullptr, QByteArray *stdErrIn = nullptr)
{
QProcess process;
process.start(program, arguments, QProcess::ReadWrite);
if (!process.waitForStarted()) {
qWarning().noquote().nospace() << "Unable to start "
<< process.program() << ": " << process.errorString();
return false;
}
process.closeWriteChannel();
const bool finished = process.waitForFinished();
const QByteArray stdErr = process.readAllStandardError();
if (stdErrIn)
*stdErrIn = stdErr;
if (stdOutIn)
*stdOutIn = process.readAllStandardOutput();
if (!finished) {
qWarning().noquote().nospace() << process.program() << " timed out: " << stdErr;
process.kill();
return false;
}
if (process.exitStatus() != QProcess::NormalExit) {
qWarning().noquote().nospace() << process.program() << " crashed: " << stdErr;
return false;
}
if (process.exitCode() != 0) {
qWarning().noquote().nospace() << process.program() << " exited "
<< process.exitCode() << ": " << stdErr;
return false;
}
return true;
}
#if defined(Q_CC_GNU)
static QByteArray frameworkPath() { return QByteArrayLiteral(" (framework directory)"); }
// Determine g++'s internal include paths from the output of
// g++ -E -x c++ - -v </dev/null
// Output looks like:
// #include <...> search starts here:
// /usr/local/include
// /System/Library/Frameworks (framework directory)
// End of search list.
static HeaderPaths gppInternalIncludePaths(const QString &compiler)
{
HeaderPaths result;
QStringList arguments;
arguments << QStringLiteral("-E") << QStringLiteral("-x") << QStringLiteral("c++")
<< QStringLiteral("-") << QStringLiteral("-v");
QByteArray stdOut;
QByteArray stdErr;
if (!runProcess(compiler, arguments, &stdOut, &stdErr))
return result;
const QByteArrayList stdErrLines = stdErr.split('\n');
bool isIncludeDir = false;
for (const QByteArray &line : stdErrLines) {
if (isIncludeDir) {
if (line.startsWith(QByteArrayLiteral("End of search list"))) {
isIncludeDir = false;
} else {
HeaderPath headerPath(line.trimmed());
if (headerPath.path.endsWith(frameworkPath())) {
headerPath.m_isFramework = true;
headerPath.path.truncate(headerPath.path.size() - frameworkPath().size());
}
result.append(headerPath);
}
} else if (line.startsWith(QByteArrayLiteral("#include <...> search starts here"))) {
isIncludeDir = true;
}
}
return result;
}
#endif // Q_CC_MSVC
// For MSVC, we set the MS compatibility version and let Clang figure out its own
// options and include paths.
// For the others, we pass "-nostdinc" since libclang tries to add it's own system
// include paths, which together with the clang compiler paths causes some clash
// which causes std types not being found and construct -I/-F options from the
// include paths of the host compiler.
static QByteArray noStandardIncludeOption() { return QByteArrayLiteral("-nostdinc"); }
// Returns clang options needed for emulating the host compiler
QByteArrayList emulatedCompilerOptions()
{
QByteArrayList result;
#if defined(Q_CC_MSVC)
const HeaderPaths headerPaths;
result.append(QByteArrayLiteral("-fms-compatibility-version=19"));
#elif defined(Q_CC_CLANG)
const HeaderPaths headerPaths = gppInternalIncludePaths(QStringLiteral("clang++"));
result.append(noStandardIncludeOption());
#elif defined(Q_CC_GNU)
const HeaderPaths headerPaths = gppInternalIncludePaths(QStringLiteral("g++"));
result.append(noStandardIncludeOption());
#else
const HeaderPaths headerPaths;
#endif
std::transform(headerPaths.cbegin(), headerPaths.cend(),
std::back_inserter(result), [](const HeaderPath &p) {
return HeaderPath::includeOption(p, true);
});
return result;
}
} // namespace clang
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