Switch QNX tool chains from hard-coded to detected ABIs

Move the target detection code from the QnxConfiguration class into a
separate function that can be used by the QnxConfiguration code and
the QnxToolChain code.

Move some resetToolChain calls after setSdpPath calls.  QNX ABI
detection depends on the SDP path.

Change-Id: I7417a5a1064a77edfb113d9d0010f1e061b81ca6
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>

src/plugins/qnx/qnxconfiguration.cpp

@@ -267,7 +267,6 @@ QVariant QnxConfiguration::createDebugger(const Target &target)
 QnxToolChain *QnxConfiguration::createToolChain(const Target &target)
 {
     QnxToolChain *toolChain = new QnxToolChain(ToolChain::AutoDetection);
-    toolChain->resetToolChain(qccCompilerPath());
     toolChain->setLanguage(ProjectExplorer::Constants::CXX_LANGUAGE_ID);
     toolChain->setTargetAbi(target.m_abi);
     toolChain->setDisplayName(
@@ -277,6 +276,7 @@ QnxToolChain *QnxConfiguration::createToolChain(const Target &target)
                 .arg(displayName())
                 .arg(target.shortDescription()));
     toolChain->setSdpPath(sdpPath().toString());
+    toolChain->resetToolChain(qccCompilerPath());
     ToolChainManager::registerToolChain(toolChain);
     return toolChain;
 }
@@ -414,26 +414,9 @@ const QnxConfiguration::Target *QnxConfiguration::findTargetByDebuggerPath(
 void QnxConfiguration::updateTargets()
 {
     m_targets.clear();
-
-    QDir targetsDir(m_qnxTarget.toString());
-    QStringList targetNames = targetsDir.entryList(QDir::Dirs | QDir::NoDotAndDotDot);
-    foreach (const QString &targetName, targetNames) {
-        FileName targetPath = FileName(m_qnxTarget).appendPath(targetName);
-        FileName libc = FileName(targetPath).appendPath("lib/libc.so");
-        if (libc.exists()) {
-            QList<Abi> abis = Abi::abisOfBinary(libc);
-            if (abis.count() > 0) {
-                if (abis.count() > 1)
-                    qWarning() << libc << "has more than one ABI ... processing all";
-
-                foreach (const Abi &abi, abis)
-                    m_targets.append(Target(abi, targetPath));
-            } else {
-                qWarning() << libc << "has no ABIs ... discarded";
-            }
-        }
-    }
-
+    QList<QnxTarget> targets = QnxUtils::findTargets(m_qnxTarget);
+    for (const auto &target : targets)
+        m_targets.append(Target(target.m_abi, target.m_path));
 }
 
 void QnxConfiguration::assignDebuggersToTargets()

src/plugins/qnx/qnxconfiguration.h

@@ -103,7 +103,7 @@ private:
     class Target
     {
     public:
-        Target(const ProjectExplorer::Abi &abi, Utils::FileName &path)
+        Target(const ProjectExplorer::Abi &abi, const Utils::FileName &path)
             : m_abi(abi), m_path(path)
         {
         }

src/plugins/qnx/qnxtoolchain.cpp

@@ -30,7 +30,7 @@
 #include "qnxutils.h"
 
 #include <projectexplorer/projectexplorerconstants.h>
-
+#include <utils/algorithm.h>
 #include <utils/pathchooser.h>
 
 #include <QFormLayout>
@@ -43,15 +43,32 @@ namespace Internal {
 
 static const char CompilerSdpPath[] = "Qnx.QnxToolChain.NDKPath";
 
-static const QList<Abi> qccSupportedAbis()
+static QList<Abi> detectTargetAbis(const FileName &sdpPath)
 {
-    QList<Abi> abis;
-    abis << Abi(Abi::ArmArchitecture, Abi::LinuxOS, Abi::GenericLinuxFlavor, Abi::ElfFormat, 32);
-    abis << Abi(Abi::ArmArchitecture, Abi::LinuxOS, Abi::GenericLinuxFlavor, Abi::ElfFormat, 64);
-    abis << Abi(Abi::X86Architecture, Abi::LinuxOS, Abi::GenericLinuxFlavor, Abi::ElfFormat, 32);
-    abis << Abi(Abi::X86Architecture, Abi::LinuxOS, Abi::GenericLinuxFlavor, Abi::ElfFormat, 64);
+    QList<Abi> result;
+    FileName qnxTarget;
 
-    return abis;
+    if (!sdpPath.fileName().isEmpty()) {
+        QList<Utils::EnvironmentItem> environment = QnxUtils::qnxEnvironment(sdpPath.toString());
+        foreach (const Utils::EnvironmentItem &item, environment) {
+            if (item.name == QLatin1Literal("QNX_TARGET"))
+                qnxTarget = FileName::fromString(item.value);
+        }
+    }
+
+    if (qnxTarget.isEmpty())
+        return result;
+
+    QList<QnxTarget> targets = QnxUtils::findTargets(qnxTarget);
+    for (const auto &target : targets) {
+        if (!result.contains(target.m_abi))
+            result.append(target.m_abi);
+    }
+
+    Utils::sort(result,
+              [](const Abi &arg1, const Abi &arg2) { return arg1.toString() < arg2.toString(); });
+
+    return result;
 }
 
 static void setQnxEnvironment(Environment &env, const QList<EnvironmentItem> &qnxEnv)
@@ -133,10 +150,9 @@ void QnxToolChain::setSdpPath(const QString &sdpPath)
     toolChainUpdated();
 }
 
-// qcc doesn't support a "-dumpmachine" option to get supported abis
 GccToolChain::DetectedAbisResult QnxToolChain::detectSupportedAbis() const
 {
-    return qccSupportedAbis();
+    return detectTargetAbis(FileName::fromString(m_sdpPath));
 }
 
 // Qcc is a multi-compiler driver, and most of the gcc options can be accomplished by using the -Wp, and -Wc
@@ -227,8 +243,9 @@ QnxToolChainConfigWidget::QnxToolChainConfigWidget(QnxToolChain *tc)
     m_sdpPath->setPath(tc->sdpPath());
     m_sdpPath->setEnabled(!tc->isAutoDetected());
 
-    m_abiWidget->setAbis(qccSupportedAbis(), tc->targetAbi());
-    m_abiWidget->setEnabled(!tc->isAutoDetected());
+    QList<Abi> abiList = detectTargetAbis(m_sdpPath->fileName());
+    m_abiWidget->setAbis(abiList, tc->targetAbi());
+    m_abiWidget->setEnabled(!tc->isAutoDetected() && !abiList.isEmpty());
 
     m_mainLayout->addRow(tr("&Compiler path:"), m_compilerCommand);
     //: SDP refers to 'Software Development Platform'.
@@ -236,7 +253,8 @@ QnxToolChainConfigWidget::QnxToolChainConfigWidget(QnxToolChain *tc)
     m_mainLayout->addRow(tr("&ABI:"), m_abiWidget);
 
     connect(m_compilerCommand, &PathChooser::rawPathChanged, this, &ToolChainConfigWidget::dirty);
-    connect(m_sdpPath, &PathChooser::rawPathChanged, this, &ToolChainConfigWidget::dirty);
+    connect(m_sdpPath, &PathChooser::rawPathChanged,
+            this, &QnxToolChainConfigWidget::handleSdpPathChange);
     connect(m_abiWidget, &AbiWidget::abiChanged, this, &ToolChainConfigWidget::dirty);
 }
 
@@ -248,10 +266,10 @@ void QnxToolChainConfigWidget::applyImpl()
     QnxToolChain *tc = static_cast<QnxToolChain *>(toolChain());
     Q_ASSERT(tc);
     QString displayName = tc->displayName();
-    tc->resetToolChain(m_compilerCommand->fileName());
     tc->setDisplayName(displayName); // reset display name
     tc->setSdpPath(m_sdpPath->fileName().toString());
     tc->setTargetAbi(m_abiWidget->currentAbi());
+    tc->resetToolChain(m_compilerCommand->fileName());
 }
 
 void QnxToolChainConfigWidget::discardImpl()
@@ -276,5 +294,24 @@ bool QnxToolChainConfigWidget::isDirtyImpl() const
             || m_abiWidget->currentAbi() != tc->targetAbi();
 }
 
+void QnxToolChainConfigWidget::handleSdpPathChange()
+{
+    Abi currentAbi = m_abiWidget->currentAbi();
+    bool customAbi = m_abiWidget->isCustomAbi();
+    QList<Abi> abiList = detectTargetAbis(m_sdpPath->fileName());
+
+    m_abiWidget->setEnabled(!abiList.isEmpty());
+
+    // Find a good ABI for the new compiler:
+    Abi newAbi;
+    if (customAbi)
+        newAbi = currentAbi;
+    else if (abiList.contains(currentAbi))
+        newAbi = currentAbi;
+
+    m_abiWidget->setAbis(abiList, newAbi);
+    emit dirty();
+}
+
 } // namespace Internal
 } // namespace Qnx

src/plugins/qnx/qnxtoolchain.h

@@ -99,6 +99,8 @@ private:
     bool isDirtyImpl() const override;
     void makeReadOnlyImpl() override { }
 
+    void handleSdpPathChange();
+
     Utils::PathChooser *m_compilerCommand;
     Utils::PathChooser *m_sdpPath;
     ProjectExplorer::AbiWidget *m_abiWidget;

src/plugins/qnx/qnxutils.cpp

@@ -26,11 +26,14 @@
 #include "qnxutils.h"
 #include "qnxqtversion.h"
 
+#include <utils/fileutils.h>
 #include <utils/hostosinfo.h>
 #include <utils/synchronousprocess.h>
 #include <utils/temporaryfile.h>
 
+#include <QDebug>
 #include <QDir>
+#include <QDirIterator>
 #include <QDomDocument>
 #include <QProcess>
 #include <QStandardPaths>
@@ -227,3 +230,31 @@ QList<Utils::EnvironmentItem> QnxUtils::qnxEnvironment(const QString &sdpPath)
 {
     return qnxEnvironmentFromEnvFile(envFilePath(sdpPath));
 }
+
+QList<QnxTarget> QnxUtils::findTargets(const Utils::FileName &basePath)
+{
+    using namespace Utils;
+    QList<QnxTarget> result;
+
+    QDirIterator iterator(basePath.toString());
+    while (iterator.hasNext()) {
+        iterator.next();
+        FileName libc = FileName::fromString(iterator.filePath()).appendPath("lib/libc.so");
+        if (libc.exists()) {
+            auto abis = Abi::abisOfBinary(libc);
+            if (abis.isEmpty()) {
+                qWarning() << libc << "has no ABIs ... discarded";
+                continue;
+            }
+
+            if (abis.count() > 1)
+                qWarning() << libc << "has more than one ABI ... processing all";
+
+            FileName path = FileName::fromString(iterator.filePath());
+            for (auto abi : abis)
+                result.append(QnxTarget(path, abi));
+        }
+    }
+
+    return result;
+}

src/plugins/qnx/qnxutils.h

@@ -27,6 +27,7 @@
 
 #include "qnxconstants.h"
 
+#include <projectexplorer/abi.h>
 #include <utils/environment.h>
 #include <utils/qtcassert.h>
 #include <utils/fileutils.h>
@@ -53,6 +54,17 @@ public:
                 && !target.isEmpty() && !version.isEmpty() && !installationXmlFilePath.isEmpty(); }
 };
 
+class QnxTarget
+{
+public:
+    QnxTarget(const Utils::FileName &path, const ProjectExplorer::Abi &abi) :
+        m_path(path), m_abi(abi)
+    {
+    }
+    Utils::FileName m_path;
+    ProjectExplorer::Abi m_abi;
+};
+
 class QnxUtils
 {
 public:
@@ -64,6 +76,7 @@ public:
     static QString defaultTargetVersion(const QString &sdpPath);
     static QList<ConfigInstallInformation> installedConfigs(const QString &configPath = QString());
     static QList<Utils::EnvironmentItem> qnxEnvironment(const QString &sdpPath);
+    static QList<QnxTarget> findTargets(const Utils::FileName &basePath);
 };
 
 } // namespace Internal