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CMakeProjectManager: Fix importing Qt6 projects

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The code that detected the qmake path for the project stopped
working with Qt 6.0.

The new code will run a small CMake project that will output
the path of qmake from the CMake world, and not something that
Qt Creator does from outside.

Fixes: QTCREATORBUG-25100
Change-Id: I9071648c2e60eb89d0dc8f08aed793167b42a365
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: Eike Ziller <eike.ziller@qt.io>
This commit is contained in:
Cristian Adam
2020-12-31 14:08:16 +01:00
parent 5d5a4ffbf8
commit d3595110f1
1 changed files with 79 additions and 58 deletions
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141
src/plugins/cmakeprojectmanager/cmakeprojectimporter.cpp
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@@ -155,75 +155,96 @@ static FilePath qmakeFromCMakeCache(const CMakeConfig &config)
const FilePath baseQtDir = canQtCMakeDir.parentDir().parentDir().parentDir(); // Up 3 levels...
qCDebug(cmInputLog) << "BaseQtDir:" << baseQtDir.toUserOutput();
// "Parse" Qt5Core/Qt5CoreConfigExtras.cmake:
{
// This assumes that roughly this kind of data is found in
// inside Qt5Core/Qt5CoreConfigExtras.cmake:
//
// if (NOT TARGET Qt5::qmake)
// add_executable(Qt5::qmake IMPORTED)
// set(imported_location "${_qt5Core_install_prefix}/bin/qmake")
// _qt5_Core_check_file_exists(${imported_location})
// set_target_properties(Qt5::qmake PROPERTIES
// IMPORTED_LOCATION ${imported_location}
// )
// endif()
// Run a CMake project that would do qmake probing
TemporaryDirectory qtcQMakeProbeDir("qtc-cmake-qmake-probe-XXXXXXXX");
QFile extras(qtCMakeDir.toString() + "/Qt5CoreConfigExtras.cmake");
if (!extras.open(QIODevice::ReadOnly)) {
extras.setFileName(qtCMakeDir.toString() + "/Qt6CoreConfigExtras.cmake");
if (!extras.open(QIODevice::ReadOnly))
QFile cmakeListTxt(qtcQMakeProbeDir.path() + "/CMakeLists.txt");
if (!cmakeListTxt.open(QIODevice::WriteOnly)) {
return FilePath();
}
cmakeListTxt.write(QByteArray(R"(
cmake_minimum_required(VERSION 3.15)
QByteArray data;
bool inQmakeSection = false;
// Read in 4k chunks, lines longer than that are going to be ignored
while (!extras.atEnd()) {
data = extras.read(4 * 1024 - data.count());
int startPos = 0;
forever {
const int pos = data.indexOf('\n', startPos);
if (pos < 0) {
data = data.mid(startPos);
break;
project(qmake-probe LANGUAGES NONE)
# Bypass Qt6's usage of find_dependency, which would require compiler
# and source code probing, which slows things unnecessarily
file(WRITE "${CMAKE_SOURCE_DIR}/CMakeFindDependencyMacro.cmake"
[=[
macro(find_dependency dep)
endmacro()
]=])
set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}")
find_package(QT NAMES Qt6 Qt5 COMPONENTS Core REQUIRED)
find_package(Qt${QT_VERSION_MAJOR} COMPONENTS Core REQUIRED)
if (CMAKE_CROSSCOMPILING)
find_program(qmake_binary
NAMES qmake qmake.bat
PATHS "${Qt${QT_VERSION_MAJOR}_DIR}/../../../bin"
NO_DEFAULT_PATH)
file(WRITE "${CMAKE_SOURCE_DIR}/qmake-location.txt" "${qmake_binary}")
else()
file(GENERATE
OUTPUT "${CMAKE_SOURCE_DIR}/qmake-location.txt"
CONTENT "$<TARGET_PROPERTY:Qt${QT_VERSION_MAJOR}::qmake,IMPORTED_LOCATION>")
endif()
)"));
cmakeListTxt.close();
SynchronousProcess cmake;
cmake.setTimeoutS(5);
cmake.setFlags(SynchronousProcess::UnixTerminalDisabled);
Environment env = Environment::systemEnvironment();
Environment::setupEnglishOutput(&env);
cmake.setProcessEnvironment(env.toProcessEnvironment());
cmake.setTimeOutMessageBoxEnabled(false);
QString cmakeGenerator
= QString::fromUtf8(CMakeConfigItem::valueOf(QByteArray("CMAKE_GENERATOR"), config));
FilePath cmakeExecutable
= FilePath::fromUtf8(CMakeConfigItem::valueOf(QByteArray("CMAKE_COMMAND"), config));
FilePath cmakeMakeProgram
= FilePath::fromUtf8(CMakeConfigItem::valueOf(QByteArray("CMAKE_MAKE_PROGRAM"), config));
FilePath toolchainFile
= FilePath::fromUtf8(CMakeConfigItem::valueOf(QByteArray("CMAKE_TOOLCHAIN_FILE"), config));
FilePath hostPath
= FilePath::fromUtf8(CMakeConfigItem::valueOf(QByteArray("QT_HOST_PATH"), config));
QStringList args;
args.push_back("-S");
args.push_back(qtcQMakeProbeDir.path());
args.push_back("-B");
args.push_back(qtcQMakeProbeDir.path() + "/build");
args.push_back("-G");
args.push_back(cmakeGenerator);
if (!cmakeMakeProgram.isEmpty()) {
args.push_back(QStringLiteral("-DCMAKE_MAKE_PROGRAM=%1").arg(cmakeMakeProgram.toString()));
}
if (toolchainFile.isEmpty()) {
args.push_back(QStringLiteral("-DCMAKE_PREFIX_PATH=%1").arg(baseQtDir.toString()));
} else {
args.push_back(QStringLiteral("-DCMAKE_FIND_ROOT_PATH=%1").arg(baseQtDir.toString()));
args.push_back(QStringLiteral("-DCMAKE_TOOLCHAIN_FILE=%1").arg(toolchainFile.toString()));
}
if (!hostPath.isEmpty()) {
args.push_back(QStringLiteral("-DQT_HOST_PATH=%1").arg(hostPath.toString()));
}
QByteArray line = data.mid(startPos, pos - startPos);
const QByteArray origLine = line;
qCDebug(cmInputLog) << "CMake probing for qmake path: " << cmakeExecutable.toUserOutput() << args;
cmake.runBlocking({cmakeExecutable, args});
startPos = pos + 1;
line.replace("(", " ( ");
line.replace(")", " ) ");
line = line.simplified();
if (line == "if ( NOT TARGET Qt5::qmake )"
|| line == "if ( NOT TARGET Qt6::qmake )")
inQmakeSection = true;
if (!inQmakeSection)
continue;
const QByteArray set = "set ( imported_location ";
if (line.startsWith(set)) {
const int sp = origLine.indexOf('}');
const int ep = origLine.lastIndexOf('"');
QTC_ASSERT(sp > 0, return FilePath());
QTC_ASSERT(ep > sp + 2, return FilePath());
QTC_ASSERT(ep < origLine.count(), return FilePath());
// Eat the leading "}/" and trailing "
const QByteArray locationPart = origLine.mid(sp + 2, ep - 2 - sp);
return baseQtDir.pathAppended(QString::fromUtf8(locationPart));
}
}
}
}
// Now try to make sense of .../Qt5CoreConfig.cmake:
QFile qmakeLocationTxt(qtcQMakeProbeDir.path() + "/qmake-location.txt");
if (!qmakeLocationTxt.open(QIODevice::ReadOnly)) {
return FilePath();
}
FilePath qmakeLocation = FilePath::fromUtf8(qmakeLocationTxt.readLine().data());
qCDebug(cmInputLog) << "qmake location: " << qmakeLocation.toUserOutput();
return qmakeLocation;
}
static QVector<ToolChainDescription> extractToolChainsFromCache(const CMakeConfig &config)