Fix Project Manager not finding CMake on Windows

Signed-off-by: AMZN-Phil <pconroy@amazon.com>

Code/Tools/ProjectManager/Platform/Windows/ProjectUtils_windows.cpp

@@ -21,7 +21,7 @@ namespace O3DE::ProjectManager
 {
     namespace ProjectUtils
     {
-        AZ::Outcome<QProcessEnvironment, QString> GetCommandLineProcessEnvironment()
+        AZ::Outcome<void, QString> SetupCommandLineProcessEnvironment()
         {
             // Use the engine path to insert a path for cmake
             auto engineInfoResult = PythonBindingsInterface::Get()->GetEngineInfo();
@@ -31,26 +31,30 @@ namespace O3DE::ProjectManager
             }
             auto engineInfo = engineInfoResult.GetValue();
 
-            QProcessEnvironment currentEnvironment(QProcessEnvironment::systemEnvironment());
-
-            // Append cmake path to PATH incase it is missing
+            // Append cmake path to the current environment PATH incase it is missing, since if
+            // we are starting CMake itself the current application needs to find it using Path
+            // This also takes affect for all child processes.
             QDir cmakePath(engineInfo.m_path);
             cmakePath.cd("cmake/runtime/bin");
-            QString pathValue = currentEnvironment.value("PATH");
-            pathValue += ";" + cmakePath.path();
-            currentEnvironment.insert("PATH", pathValue);
-            return AZ::Success(currentEnvironment);
+            QString pathEnv = qEnvironmentVariable("Path");
+            if (!pathEnv.contains(cmakePath.path()))
+            {
+                pathEnv += ";" + cmakePath.path();
+                qputenv("Path", pathEnv.toStdString().c_str());
+            }
+
+            return AZ::Success();
         }
 
         AZ::Outcome<QString, QString> FindSupportedCompilerForPlatform()
         {
             // Validate that cmake is installed 
-            auto cmakeProcessEnvResult = GetCommandLineProcessEnvironment();
+            auto cmakeProcessEnvResult = SetupCommandLineProcessEnvironment();
             if (!cmakeProcessEnvResult.IsSuccess())
             {
                 return AZ::Failure(cmakeProcessEnvResult.GetError());
             }
-            auto cmakeVersionQueryResult = ExecuteCommandResult("cmake", QStringList{"--version"}, cmakeProcessEnvResult.GetValue());
+            auto cmakeVersionQueryResult = ExecuteCommandResult("cmake", QStringList{"--version"});
             if (!cmakeVersionQueryResult.IsSuccess())
             {
                 return AZ::Failure(QObject::tr("CMake not found. \n\n"
@@ -104,7 +108,7 @@ namespace O3DE::ProjectManager
         
         AZ::Outcome<void, QString> OpenCMakeGUI(const QString& projectPath)
         {
-            AZ::Outcome processEnvResult = GetCommandLineProcessEnvironment();
+            AZ::Outcome processEnvResult = SetupCommandLineProcessEnvironment();
             if (!processEnvResult.IsSuccess())
             {
                 return AZ::Failure(processEnvResult.GetError());
@@ -118,7 +122,6 @@ namespace O3DE::ProjectManager
             }
 
             QProcess process;
-            process.setProcessEnvironment(processEnvResult.GetValue());
 
             // if the project build path is relative, it should be relative to the project path 
             process.setWorkingDirectory(projectPath);
@@ -139,7 +142,6 @@ namespace O3DE::ProjectManager
             return ExecuteCommandResultModalDialog(
                 "cmd.exe",
                 QStringList{"/c", batPath},
-                QProcessEnvironment::systemEnvironment(),
                 QObject::tr("Running get_python script..."));
         }
 
@@ -157,7 +159,7 @@ namespace O3DE::ProjectManager
                     .arg(shortcutPath)
                     .arg(targetPath)
                     .arg(arguments.join(' '));
-            auto createShortcutResult = ExecuteCommandResult(cmd, QStringList{"-Command", arg}, QProcessEnvironment::systemEnvironment());
+            auto createShortcutResult = ExecuteCommandResult(cmd, QStringList{"-Command", arg});
             if (!createShortcutResult.IsSuccess())
             {
                 return AZ::Failure(QObject::tr("Failed to create desktop shortcut %1 <br><br>"

Code/Tools/ProjectManager/Source/ProjectBuilderWorker.cpp

@@ -117,18 +117,16 @@ namespace O3DE::ProjectManager
         // Show some kind of progress with very approximate estimates
         UpdateProgress(++m_progressEstimate);
 
-        auto currentEnvironmentRequest = ProjectUtils::GetCommandLineProcessEnvironment();
+        auto currentEnvironmentRequest = ProjectUtils::SetupCommandLineProcessEnvironment();
         if (!currentEnvironmentRequest.IsSuccess())
         {
             QStringToAZTracePrint(currentEnvironmentRequest.GetError());
             return AZ::Failure(currentEnvironmentRequest.GetError());
         }
-        QProcessEnvironment currentEnvironment = currentEnvironmentRequest.GetValue();
 
         m_configProjectProcess = new QProcess(this);
         m_configProjectProcess->setProcessChannelMode(QProcess::MergedChannels);
         m_configProjectProcess->setWorkingDirectory(m_projectInfo.m_path);
-        m_configProjectProcess->setProcessEnvironment(currentEnvironment);
 
         auto cmakeGenerateArgumentsResult = ConstructCmakeGenerateProjectArguments(engineInfo.m_thirdPartyPath);
         if (!cmakeGenerateArgumentsResult.IsSuccess())
@@ -181,7 +179,6 @@ namespace O3DE::ProjectManager
         m_buildProjectProcess = new QProcess(this);
         m_buildProjectProcess->setProcessChannelMode(QProcess::MergedChannels);
         m_buildProjectProcess->setWorkingDirectory(m_projectInfo.m_path);
-        m_buildProjectProcess->setProcessEnvironment(currentEnvironment);
 
         auto cmakeBuildArgumentsResult = ConstructCmakeBuildCommandArguments();
         if (!cmakeBuildArgumentsResult.IsSuccess())

Code/Tools/ProjectManager/Source/ProjectUtils.cpp

@@ -520,12 +520,10 @@ namespace O3DE::ProjectManager
         AZ::Outcome<QString, QString> ExecuteCommandResultModalDialog(
             const QString& cmd,
             const QStringList& arguments,
-            const QProcessEnvironment& processEnv,
             const QString& title)
         {
             QString resultOutput;
             QProcess execProcess;
-            execProcess.setProcessEnvironment(processEnv);
             execProcess.setProcessChannelMode(QProcess::MergedChannels);
 
             QProgressDialog dialog(title, QObject::tr("Cancel"), /*minimum=*/0, /*maximum=*/0);
@@ -611,11 +609,9 @@ namespace O3DE::ProjectManager
         AZ::Outcome<QString, QString> ExecuteCommandResult(
             const QString& cmd,
             const QStringList& arguments,
-            const QProcessEnvironment& processEnv,
             int commandTimeoutSeconds /*= ProjectCommandLineTimeoutSeconds*/)
         {
             QProcess execProcess;
-            execProcess.setProcessEnvironment(processEnv);
             execProcess.setProcessChannelMode(QProcess::MergedChannels);
             execProcess.start(cmd, arguments);
             if (!execProcess.waitForStarted())

Code/Tools/ProjectManager/Source/ProjectUtils.h

@@ -47,7 +47,6 @@ namespace O3DE::ProjectManager
         AZ::Outcome<QString, QString> ExecuteCommandResult(
             const QString& cmd,
             const QStringList& arguments,
-            const QProcessEnvironment& processEnv,
             int commandTimeoutSeconds = ProjectCommandLineTimeoutSeconds);
 
         /**
@@ -61,10 +60,9 @@ namespace O3DE::ProjectManager
         AZ::Outcome<QString, QString> ExecuteCommandResultModalDialog(
             const QString& cmd,
             const QStringList& arguments,
-            const QProcessEnvironment& processEnv,
             const QString& title);
 
-        AZ::Outcome<QProcessEnvironment, QString> GetCommandLineProcessEnvironment();
+        AZ::Outcome<void, QString> SetupCommandLineProcessEnvironment();
         AZ::Outcome<QString, QString> GetProjectBuildPath(const QString& projectPath);
         AZ::Outcome<void, QString> OpenCMakeGUI(const QString& projectPath);
         AZ::Outcome<QString, QString> RunGetPythonScript(const QString& enginePath);