qt5base-lts/qmake/qmakelibraryinfo.cpp
Joerg Bornemann 3c12ab974f Pass target and host mkspec as defines to QMakeLibraryInfo
Change-Id: If07055286496c507310c0dbb3a06f1a42d643596
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2021-03-11 09:59:56 +01:00

333 lines
13 KiB
C++

/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Copyright (C) 2016 Intel Corporation.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
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** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
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** General Public License version 2.0 or (at your option) the GNU General
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** included in the packaging of this file. Please review the following
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****************************************************************************/
#include "qmakelibraryinfo.h"
#include <qdir.h>
#include <qfile.h>
#include <qglobalstatic.h>
#include <qsettings.h>
#include <qscopedpointer.h>
#include <qstringlist.h>
#include <qmakeconfig.cpp>
QT_BEGIN_NAMESPACE
QString QMakeLibraryInfo::binaryAbsLocation;
QString QMakeLibraryInfo::qtconfManualPath;
struct QMakeLibrarySettings
{
QMakeLibrarySettings() { load(); }
void load();
QScopedPointer<QSettings> settings;
bool haveDevicePaths;
bool haveEffectiveSourcePaths;
bool haveEffectivePaths;
bool havePaths;
bool reloadOnQAppAvailable;
};
Q_GLOBAL_STATIC(QMakeLibrarySettings, qmake_library_settings)
QSettings *QMakeLibraryInfo::findConfiguration()
{
QString qtconfig = libraryInfoFile();
if (!qtconfig.isEmpty())
return new QSettings(qtconfig, QSettings::IniFormat);
return nullptr; // no luck
}
QSettings *QMakeLibraryInfo::configuration()
{
QMakeLibrarySettings *ls = qmake_library_settings();
return ls ? ls->settings.data() : nullptr;
}
void QMakeLibraryInfo::reload()
{
if (qmake_library_settings.exists())
qmake_library_settings->load();
}
bool QMakeLibraryInfo::haveGroup(PathGroup group)
{
QMakeLibrarySettings *ls = qmake_library_settings();
return ls
&& (group == EffectiveSourcePaths ? ls->haveEffectiveSourcePaths
: group == EffectivePaths ? ls->haveEffectivePaths
: group == DevicePaths ? ls->haveDevicePaths
: ls->havePaths);
}
void QMakeLibrarySettings::load()
{
settings.reset(QMakeLibraryInfo::findConfiguration());
if (settings) {
QStringList children = settings->childGroups();
haveDevicePaths = children.contains(QLatin1String("DevicePaths"));
haveEffectiveSourcePaths = children.contains(QLatin1String("EffectiveSourcePaths"));
haveEffectivePaths =
haveEffectiveSourcePaths || children.contains(QLatin1String("EffectivePaths"));
// Backwards compat: an existing but empty file is claimed to contain the Paths section.
havePaths = (!haveDevicePaths && !haveEffectivePaths
&& !children.contains(QLatin1String("Platforms")))
|| children.contains(QLatin1String("Paths"));
} else {
haveDevicePaths = false;
haveEffectiveSourcePaths = false;
haveEffectivePaths = false;
havePaths = false;
}
}
void QMakeLibraryInfo::sysrootify(QString &path)
{
// Acceptable values for SysrootifyPrefixPath are "true" and "false"
if (!QVariant::fromValue(rawLocation(SysrootifyPrefixPath, FinalPaths)).toBool())
return;
const QString sysroot = rawLocation(SysrootPath, FinalPaths);
if (sysroot.isEmpty())
return;
if (path.length() > 2 && path.at(1) == QLatin1Char(':')
&& (path.at(2) == QLatin1Char('/') || path.at(2) == QLatin1Char('\\'))) {
path.replace(0, 2, sysroot); // Strip out the drive on Windows targets
} else {
path.prepend(sysroot);
}
}
QString QMakeLibraryInfo::path(int loc)
{
QString ret = rawLocation(loc, QMakeLibraryInfo::FinalPaths);
// Automatically prepend the sysroot to target paths
if (loc < QMakeLibraryInfo::FirstHostPath || loc > QMakeLibraryInfo::LastHostPath)
sysrootify(ret);
return ret;
}
struct LocationInfo
{
QString key;
QString defaultValue;
};
static LocationInfo defaultLocationInfo(int loc)
{
LocationInfo result;
if (loc == QMakeLibraryInfo::SysrootPath) {
result.key = QStringLiteral("Sysroot");
} else if (loc == QMakeLibraryInfo::SysrootifyPrefixPath) {
result.key = QStringLiteral("SysrootifyPrefix");
} else if (loc == QMakeLibraryInfo::TargetSpecPath) {
result.key = QStringLiteral("TargetSpec");
} else if (loc == QMakeLibraryInfo::HostSpecPath) {
result.key = QStringLiteral("HostSpec");
} else if (unsigned(loc) < sizeof(qtConfEntries) / sizeof(qtConfEntries[0])) {
result.key = QLatin1String(qtConfEntries[loc].key);
result.defaultValue = QLatin1String(qtConfEntries[loc].value);
}
#ifndef Q_OS_WIN // On Windows we use the registry
else if (loc == QLibraryInfo::SettingsPath) {
result.key = QLatin1String("Settings");
result.defaultValue = QLatin1String(".");
}
#endif
return result;
}
static QString storedPath(int loc)
{
QString result;
// "volatile" here is a hack to prevent compilers from doing a
// compile-time strlen() on "path". The issue is that Qt installers
// will binary-patch the Qt installation paths -- in such scenarios, Qt
// will be built with a dummy path, thus the compile-time result of
// strlen is meaningless.
const char *volatile path = nullptr;
if (loc == QLibraryInfo::PrefixPath || loc == QMakeLibraryInfo::HostPrefixPath) {
result = QLibraryInfo::path(QLibraryInfo::PrefixPath);
} else if (loc == QMakeLibraryInfo::SysrootPath) {
// empty result
} else if (loc == QMakeLibraryInfo::SysrootifyPrefixPath) {
result = QStringLiteral("false");
} else if (loc == QMakeLibraryInfo::TargetSpecPath) {
result = QT_TARGET_MKSPEC;
} else if (loc == QMakeLibraryInfo::HostSpecPath) {
result = QT_HOST_MKSPEC;
} else if (unsigned(loc)
<= sizeof(qt_configure_str_offsets) / sizeof(qt_configure_str_offsets[0])) {
path = qt_configure_strs + qt_configure_str_offsets[loc - 1];
#ifndef Q_OS_WIN // On Windows we use the registry
} else if (loc == QLibraryInfo::SettingsPath) {
path = QT_CONFIGURE_SETTINGS_PATH;
#endif
}
if (path)
result = QString::fromLocal8Bit(path);
return result;
}
QString QMakeLibraryInfo::rawLocation(int loc, QMakeLibraryInfo::PathGroup group)
{
QString ret;
bool fromConf = false;
// Logic for choosing the right data source: if EffectivePaths are requested
// and qt.conf with that section is present, use it, otherwise fall back to
// FinalPaths. For FinalPaths, use qt.conf if present and contains not only
// [EffectivePaths], otherwise fall back to builtins.
// EffectiveSourcePaths falls back to EffectivePaths.
// DevicePaths falls back to FinalPaths.
PathGroup orig_group = group;
if (QMakeLibraryInfo::haveGroup(group)
|| (group == EffectiveSourcePaths
&& (group = EffectivePaths, QMakeLibraryInfo::haveGroup(group)))
|| ((group == EffectivePaths || group == DevicePaths)
&& (group = FinalPaths, QMakeLibraryInfo::haveGroup(group)))
|| (group = orig_group, false)) {
fromConf = true;
LocationInfo locinfo = defaultLocationInfo(loc);
if (!locinfo.key.isNull()) {
QSettings *config = QMakeLibraryInfo::configuration();
config->beginGroup(QLatin1String(group == DevicePaths ? "DevicePaths"
: group == EffectiveSourcePaths
? "EffectiveSourcePaths"
: group == EffectivePaths ? "EffectivePaths"
: "Paths"));
ret = config->value(locinfo.key, locinfo.defaultValue).toString();
if (ret.isEmpty()) {
if (loc == HostPrefixPath) {
locinfo = defaultLocationInfo(QLibraryInfo::PrefixPath);
ret = config->value(locinfo.key, locinfo.defaultValue).toString();
} else if (loc == TargetSpecPath || loc == HostSpecPath
|| loc == SysrootifyPrefixPath) {
fromConf = false;
}
// The last case here is SysrootPath, which can be legitimately empty.
// All other keys have non-empty fallbacks to start with.
}
// TODO: Might be replaced by common for qmake and qtcore function
int startIndex = 0;
forever {
startIndex = ret.indexOf(QLatin1Char('$'), startIndex);
if (startIndex < 0)
break;
if (ret.length() < startIndex + 3)
break;
if (ret.at(startIndex + 1) != QLatin1Char('(')) {
startIndex++;
continue;
}
int endIndex = ret.indexOf(QLatin1Char(')'), startIndex + 2);
if (endIndex < 0)
break;
auto envVarName =
QStringView { ret }.mid(startIndex + 2, endIndex - startIndex - 2);
QString value =
QString::fromLocal8Bit(qgetenv(envVarName.toLocal8Bit().constData()));
ret.replace(startIndex, endIndex - startIndex + 1, value);
startIndex += value.length();
}
config->endGroup();
ret = QDir::fromNativeSeparators(ret);
}
}
if (!fromConf)
ret = storedPath(loc);
// These values aren't actually paths and thus need to be returned verbatim.
if (loc == TargetSpecPath || loc == HostSpecPath || loc == SysrootifyPrefixPath)
return ret;
if (!ret.isEmpty() && QDir::isRelativePath(ret)) {
QString baseDir;
if (loc == HostPrefixPath || loc == QLibraryInfo::PrefixPath || loc == SysrootPath) {
// We make the prefix/sysroot path absolute to the executable's directory.
// loc == PrefixPath while a sysroot is set would make no sense here.
// loc == SysrootPath only makes sense if qmake lives inside the sysroot itself.
baseDir = QFileInfo(libraryInfoFile()).absolutePath();
} else if (loc >= FirstHostPath && loc <= LastHostPath) {
// We make any other host path absolute to the host prefix directory.
baseDir = rawLocation(HostPrefixPath, group);
} else {
// we make any other path absolute to the prefix directory
baseDir = rawLocation(QLibraryInfo::PrefixPath, group);
if (group == EffectivePaths)
sysrootify(baseDir);
}
ret = QDir::cleanPath(baseDir + QLatin1Char('/') + ret);
}
return ret;
}
QString QMakeLibraryInfo::libraryInfoFile()
{
if (!qtconfManualPath.isEmpty())
return qtconfManualPath;
if (!binaryAbsLocation.isEmpty()) {
QDir dir(QFileInfo(binaryAbsLocation).absolutePath());
QString qtconfig = dir.filePath("qt" QT_STRINGIFY(QT_VERSION_MAJOR) ".conf");
if (QFile::exists(qtconfig))
return qtconfig;
qtconfig = dir.filePath("qt.conf");
if (QFile::exists(qtconfig))
return qtconfig;
}
return QString();
}
QT_END_NAMESPACE