bug 261976: CommandLauncher to report about $PATH problems and related

clean-up

build/org.eclipse.cdt.make.core/src/org/eclipse/cdt/make/core/MakeBuilder.java

@@ -256,24 +256,12 @@ public class MakeBuilder extends ACBuilder {
 				getProject().setSessionProperty(qName, !monitor.isCanceled() && !isClean ? new Integer(streamMon.getWorkDone()) : null);
 
 				if (errMsg != null) {
-					StringBuffer buf = new StringBuffer(buildCommand.toString() + " "); //$NON-NLS-1$
-					for (String buildArgument : buildArguments) {
-						buf.append(buildArgument);
-						buf.append(' ');
-					}
-
-					String errorDesc = MakeMessages.getFormattedString("MakeBuilder.buildError", buf.toString()); //$NON-NLS-1$
-					buf = new StringBuffer(errorDesc);
-					buf.append(System.getProperty("line.separator", "\n")); //$NON-NLS-1$ //$NON-NLS-2$
-					buf.append("(").append(errMsg).append(")"); //$NON-NLS-1$ //$NON-NLS-2$
-					cos.write(buf.toString().getBytes());
-					cos.flush();
+					consoleErr.write((errMsg + '\n').getBytes());
 				}
 
 				stdout.close();
 				stderr.close();
 
-				monitor.subTask(MakeMessages.getString("MakeBuilder.Creating_Markers")); //$NON-NLS-1$
 				consoleOut.close();
 				consoleErr.close();
 				cos.close();

build/org.eclipse.cdt.make.core/src/org/eclipse/cdt/make/internal/core/MakeMessages.properties

@@ -13,7 +13,6 @@
 AbstractGCCBOPConsoleParser_EnteringDirectory=Entering directory
 AbstractGCCBOPConsoleParser_LeavingDirectory=Leaving directory
 
-MakeBuilder.buildError=Error launching builder ({0})
 MakeBuilder.Invoking_Make_Builder=Invoking Make Builder...
 MakeBuilder.Invoking_Command=Invoking Command: 
 MakeBuilder.Updating_project=Updating project...
@@ -41,9 +40,7 @@ ExternalScannerInfoProvider.Reading_Specs=Reading specs ...
 ExternalScannerInfoProvider.Invoking_Command=Invoking Command: 
 ExternalScannerInfoProvider.Parsing_Output=Parsing output ... 
 ExternalScannerInfoProvider.Creating_Markers=Generating markers ... 
-# Error_Prefix affects generation of markers in the Problems view
-ExternalScannerInfoProvider.Error_Prefix=Warning: 
-ExternalScannerInfoProvider.Provider_Error=Error launching external scanner info generator ({0})
+ExternalScannerInfoProvider.Provider_Error=Warning: Error launching external scanner info generator ({0})
 ExternalScannerInfoProvider.Working_Directory=Working directory: {0}
 ExternalScannerInfoProvider.Program_Not_In_Path=Program ''{0}'' is not found in $PATH
 

build/org.eclipse.cdt.make.core/src/org/eclipse/cdt/make/internal/core/scannerconfig2/DefaultRunSIProvider.java

@@ -37,7 +37,6 @@ import org.eclipse.cdt.make.internal.core.StreamMonitor;
 import org.eclipse.cdt.make.internal.core.scannerconfig.ScannerConfigUtil;
 import org.eclipse.cdt.make.internal.core.scannerconfig.ScannerInfoConsoleParserFactory;
 import org.eclipse.cdt.utils.EFSExtensionManager;
-import org.eclipse.cdt.utils.PathUtil;
 import org.eclipse.core.resources.IProject;
 import org.eclipse.core.resources.IResource;
 import org.eclipse.core.runtime.IPath;
@@ -55,55 +54,53 @@ import org.osgi.service.prefs.BackingStoreException;
  * @author vhirsl
  */
 public class DefaultRunSIProvider implements IExternalScannerInfoProvider {
-    private static final String EXTERNAL_SI_PROVIDER_ERROR = "ExternalScannerInfoProvider.Provider_Error"; //$NON-NLS-1$
 	private static final String GMAKE_ERROR_PARSER_ID = "org.eclipse.cdt.core.GmakeErrorParser"; //$NON-NLS-1$
 	private static final String PREF_CONSOLE_ENABLED = "org.eclipse.cdt.make.core.scanner.discovery.console.enabled"; //$NON-NLS-1$
 	private static final String NEWLINE = System.getProperty("line.separator", "\n"); //$NON-NLS-1$ //$NON-NLS-2$
-	private static final String PATH_ENV = "PATH"; //$NON-NLS-1$
 
-    protected IResource resource;
-    protected String providerId;
-    protected IScannerConfigBuilderInfo2 buildInfo;
-    protected IScannerInfoCollector collector;
-    // To be initialized by a subclass
-    protected IPath fWorkingDirectory;
-    protected IPath fCompileCommand;
-    protected String[] fCompileArguments;
+	protected IResource resource;
+	protected String providerId;
+	protected IScannerConfigBuilderInfo2 buildInfo;
+	protected IScannerInfoCollector collector;
+	// To be initialized by a subclass
+	protected IPath fWorkingDirectory;
+	protected IPath fCompileCommand;
+	protected String[] fCompileArguments;
 
-    private SCMarkerGenerator markerGenerator = new SCMarkerGenerator();
+	private SCMarkerGenerator markerGenerator = new SCMarkerGenerator();
 
-    @Override
+	@Override
 	public boolean invokeProvider(IProgressMonitor monitor, IResource resource,
-    		String providerId, IScannerConfigBuilderInfo2 buildInfo,
-    		IScannerInfoCollector collector) {
-    	return invokeProvider(monitor, resource, new InfoContext(resource.getProject()), providerId, buildInfo, collector, null);
-    }
+			String providerId, IScannerConfigBuilderInfo2 buildInfo,
+			IScannerInfoCollector collector) {
+		return invokeProvider(monitor, resource, new InfoContext(resource.getProject()), providerId, buildInfo, collector, null);
+	}
 
-    @Override
+	@Override
 	public boolean invokeProvider(IProgressMonitor monitor,
-                                  IResource resource,
-                                  InfoContext context,
-                                  String providerId,
-                                  IScannerConfigBuilderInfo2 buildInfo,
-                                  IScannerInfoCollector collector,
-                                  Properties env) {
-	    // initialize fields
-        this.resource = resource;
-        this.providerId = providerId;
-        this.buildInfo = buildInfo;
-        this.collector = collector;
+			IResource resource,
+			InfoContext context,
+			String providerId,
+			IScannerConfigBuilderInfo2 buildInfo,
+			IScannerInfoCollector collector,
+			Properties env) {
+		// initialize fields
+		this.resource = resource;
+		this.providerId = providerId;
+		this.buildInfo = buildInfo;
+		this.collector = collector;
 
-        IProject currentProject = resource.getProject();
-        // call a subclass to initialize protected fields
-        if (!initialize()) {
-            return false;
-        }
-        if (monitor == null) {
-            monitor = new NullProgressMonitor();
-        }
-        monitor.beginTask(MakeMessages.getString("ExternalScannerInfoProvider.Reading_Specs"), 100); //$NON-NLS-1$
+		IProject currentProject = resource.getProject();
+		// call a subclass to initialize protected fields
+		if (!initialize()) {
+			return false;
+		}
+		if (monitor == null) {
+			monitor = new NullProgressMonitor();
+		}
+		monitor.beginTask(MakeMessages.getString("ExternalScannerInfoProvider.Reading_Specs"), 100); //$NON-NLS-1$
 
-        try {
+		try {
 			ILanguage language = context.getLanguage();
 			IConsole console;
 			if (language!=null && isConsoleEnabled()) {
@@ -114,23 +111,24 @@ public class DefaultRunSIProvider implements IExternalScannerInfoProvider {
 				// that looks in extension points registry and won't find the id
 				console = CCorePlugin.getDefault().getConsole(MakeCorePlugin.PLUGIN_ID + ".console.hidden"); //$NON-NLS-1$
 			}
-            console.start(currentProject);
-            OutputStream cos = console.getOutputStream();
+			console.start(currentProject);
+			OutputStream cos = console.getOutputStream();
 
-            // Before launching give visual cues via the monitor
-            monitor.subTask(MakeMessages.getString("ExternalScannerInfoProvider.Reading_Specs")); //$NON-NLS-1$
+			// Before launching give visual cues via the monitor
+			monitor.subTask(MakeMessages.getString("ExternalScannerInfoProvider.Reading_Specs")); //$NON-NLS-1$
 
-            String errMsg = null;
-            ICommandLauncher launcher = new CommandLauncher();
-            launcher.setProject(currentProject);
-            // Print the command for visual interaction.
-            launcher.showCommand(true);
+			String errMsg = null;
+			ICommandLauncher launcher = new CommandLauncher();
+			launcher.setProject(currentProject);
+			// Print the command for visual interaction.
+			launcher.showCommand(true);
 
-            String[] comandLineOptions = getCommandLineOptions();
-            String params = coligate(comandLineOptions);
+			String[] comandLineOptions = getCommandLineOptions();
+			IPath program = getCommandToLaunch();
+			String params = coligate(comandLineOptions);
 
-            monitor.subTask(MakeMessages.getString("ExternalScannerInfoProvider.Invoking_Command")  //$NON-NLS-1$
-                    + getCommandToLaunch() + params);
+			monitor.subTask(MakeMessages.getString("ExternalScannerInfoProvider.Invoking_Command")  //$NON-NLS-1$
+					+ program + params);
 
 			ErrorParserManager epm = new ErrorParserManager(currentProject, markerGenerator, new String[] {GMAKE_ERROR_PARSER_ID});
 			epm.setOutputStream(cos);
@@ -140,90 +138,66 @@ public class DefaultRunSIProvider implements IExternalScannerInfoProvider {
 
 			ConsoleOutputSniffer sniffer = ScannerInfoConsoleParserFactory.getESIProviderOutputSniffer(
 					stdout, stderr, currentProject, context, providerId, buildInfo, collector, markerGenerator);
-            OutputStream consoleOut = (sniffer == null ? cos : sniffer.getOutputStream());
-            OutputStream consoleErr = (sniffer == null ? cos : sniffer.getErrorStream());
-            Process p = launcher.execute(getCommandToLaunch(), comandLineOptions, setEnvironment(launcher, env), fWorkingDirectory, monitor);
-            if (p != null) {
-                try {
-                    // Close the input of the Process explicitely.
-                    // We will never write to it.
-                    p.getOutputStream().close();
-                } catch (IOException e) {
-                }
-                if (launcher.waitAndRead(consoleOut, consoleErr, new SubProgressMonitor(monitor, 0)) != ICommandLauncher.OK) {
-                    errMsg = launcher.getErrorMessage();
-                }
-                monitor.subTask(MakeMessages.getString("ExternalScannerInfoProvider.Parsing_Output")); //$NON-NLS-1$
-            }
-            else {
-                errMsg = launcher.getErrorMessage();
-            }
-
-			if (errMsg != null) {
-				String errorPrefix = MakeMessages.getString("ExternalScannerInfoProvider.Error_Prefix"); //$NON-NLS-1$
-				String program = fCompileCommand.toString();
-
-				String msg = MakeMessages.getFormattedString(EXTERNAL_SI_PROVIDER_ERROR, program+params);
-				printLine(consoleErr, errorPrefix + msg + NEWLINE);
-
-				// Launching failed, trying to figure out possible cause
-				Properties envMap = getEnvMap(launcher, env);
-				String envPath = envMap.getProperty(PATH_ENV);
-				if (envPath == null) {
-					envPath = System.getenv(PATH_ENV);
+			OutputStream consoleOut = (sniffer == null ? cos : sniffer.getOutputStream());
+			OutputStream consoleErr = (sniffer == null ? cos : sniffer.getErrorStream());
+			Process p = launcher.execute(program, comandLineOptions, setEnvironment(launcher, env), fWorkingDirectory, monitor);
+			if (p != null) {
+				try {
+					// Close the input of the Process explicitly.
+					// We will never write to it.
+					p.getOutputStream().close();
+				} catch (IOException e) {
 				}
-				if (!fCompileCommand.isAbsolute() && PathUtil.findProgramLocation(program, envPath) == null) {
-					printLine(consoleErr, errMsg);
-					msg = MakeMessages.getFormattedString("ExternalScannerInfoProvider.Working_Directory", fWorkingDirectory); //$NON-NLS-1$
-					msg = MakeMessages.getFormattedString("ExternalScannerInfoProvider.Program_Not_In_Path", program); //$NON-NLS-1$
-					printLine(consoleErr, errorPrefix + msg + NEWLINE);
-					printLine(consoleErr, PATH_ENV + "=[" + envPath + "]" + NEWLINE); //$NON-NLS-1$ //$NON-NLS-2$
-				} else {
-					printLine(consoleErr, errorPrefix + errMsg);
-					msg = MakeMessages.getFormattedString("ExternalScannerInfoProvider.Working_Directory", fWorkingDirectory); //$NON-NLS-1$
-					printLine(consoleErr, PATH_ENV + "=[" + envPath + "]" + NEWLINE); //$NON-NLS-1$ //$NON-NLS-2$
+				if (launcher.waitAndRead(consoleOut, consoleErr, new SubProgressMonitor(monitor, 0)) != ICommandLauncher.OK) {
+					errMsg = launcher.getErrorMessage();
 				}
-
-				monitor.subTask(MakeMessages.getString("ExternalScannerInfoProvider.Creating_Markers")); //$NON-NLS-1$
+				monitor.subTask(MakeMessages.getString("ExternalScannerInfoProvider.Parsing_Output")); //$NON-NLS-1$
+			} else {
+				errMsg = launcher.getErrorMessage();
 			}
 
-            consoleOut.close();
-            consoleErr.close();
-            cos.close();
-        }
-        catch (Exception e) {
-            MakeCorePlugin.log(e);
-        }
-        finally {
-            monitor.done();
-        }
-        return true;
-    }
+			if (errMsg != null) {
+				printLine(consoleErr, errMsg);
+				printLine(consoleErr, MakeMessages.getFormattedString("ExternalScannerInfoProvider.Provider_Error", program + params) + NEWLINE); //$NON-NLS-1$
+			}
 
-    protected IPath getCommandToLaunch() {
-    	return fCompileCommand;
-    }
+			consoleOut.close();
+			consoleErr.close();
+			cos.close();
+		}
+		catch (Exception e) {
+			MakeCorePlugin.log(e);
+		}
+		finally {
+			monitor.done();
+		}
+		return true;
+	}
 
-    protected String[] getCommandLineOptions() {
-        // add additional arguments
-        // subclass can change default behavior
-        return prepareArguments(
-                buildInfo.isUseDefaultProviderCommand(providerId));
-    }
+	protected IPath getCommandToLaunch() {
+		return fCompileCommand;
+	}
 
-    private void printLine(OutputStream stream, String msg) throws IOException {
-    	stream.write((msg + NEWLINE).getBytes());
-    	stream.flush();
-    }
+	protected String[] getCommandLineOptions() {
+		// add additional arguments
+		// subclass can change default behavior
+		return prepareArguments(
+				buildInfo.isUseDefaultProviderCommand(providerId));
+	}
 
-    /**
-     * Initialization of protected fields.
-     * Subclasses are most likely to override default implementation.
-     */
-    protected boolean initialize() {
+	private void printLine(OutputStream stream, String msg) throws IOException {
+		stream.write((msg + NEWLINE).getBytes());
+		stream.flush();
+	}
+
+	/**
+	 * Initialization of protected fields.
+	 * Subclasses are most likely to override default implementation.
+	 */
+	protected boolean initialize() {
 
 		IProject currProject = resource.getProject();
-        //fWorkingDirectory = resource.getProject().getLocation();
+		//fWorkingDirectory = resource.getProject().getLocation();
 		URI workingDirURI = MakeBuilderUtil.getBuildDirectoryURI(currProject, MakeBuilder.BUILDER_ID);
 		String pathString = EFSExtensionManager.getDefault().getPathFromURI(workingDirURI);
 		if(pathString != null) {
@@ -235,34 +209,34 @@ public class DefaultRunSIProvider implements IExternalScannerInfoProvider {
 			throw new IllegalStateException();
 		}
 
-        fCompileCommand = new Path(buildInfo.getProviderRunCommand(providerId));
-        fCompileArguments = ScannerConfigUtil.tokenizeStringWithQuotes(buildInfo.getProviderRunArguments(providerId), "\"");//$NON-NLS-1$
-        return (fCompileCommand != null);
-    }
+		fCompileCommand = new Path(buildInfo.getProviderRunCommand(providerId));
+		fCompileArguments = ScannerConfigUtil.tokenizeStringWithQuotes(buildInfo.getProviderRunArguments(providerId), "\"");//$NON-NLS-1$
+		return (fCompileCommand != null);
+	}
 
-    /**
-     * Add additional arguments. For example: tso - target specific options
-     * Base class implementation returns compileArguments.
-     * Subclasses are most likely to override default implementation.
-     */
-    protected String[] prepareArguments(boolean isDefaultCommand) {
-        return fCompileArguments;
-    }
+	/**
+	 * Add additional arguments. For example: tso - target specific options
+	 * Base class implementation returns compileArguments.
+	 * Subclasses are most likely to override default implementation.
+	 */
+	protected String[] prepareArguments(boolean isDefaultCommand) {
+		return fCompileArguments;
+	}
 
-    private String coligate(String[] array) {
-        StringBuffer sb = new StringBuffer(128);
-        for (int i = 0; i < array.length; ++i) {
-            sb.append(' ');
-            sb.append(array[i]);
-        }
-        String ca = sb.toString();
-        return ca;
-    }
+	private String coligate(String[] array) {
+		StringBuffer sb = new StringBuffer(128);
+		for (int i = 0; i < array.length; ++i) {
+			sb.append(' ');
+			sb.append(array[i]);
+		}
+		String ca = sb.toString();
+		return ca;
+	}
 
 	private Properties getEnvMap(ICommandLauncher launcher, Properties initialEnv) {
 		// Set the environmennt, some scripts may need the CWD var to be set.
 		Properties props = initialEnv != null ? initialEnv : launcher.getEnvironment();
-	
+
 		if (fWorkingDirectory != null) {
 			props.put("CWD", fWorkingDirectory.toOSString()); //$NON-NLS-1$
 			props.put("PWD", fWorkingDirectory.toOSString()); //$NON-NLS-1$
@@ -278,20 +252,20 @@ public class DefaultRunSIProvider implements IExternalScannerInfoProvider {
 		return props;
 	}
 
-    protected String[] setEnvironment(ICommandLauncher launcher, Properties initialEnv) {
-        Properties props = getEnvMap(launcher, initialEnv);
-        String[] env = null;
-        ArrayList<String> envList = new ArrayList<String>();
-        Enumeration<?> names = props.propertyNames();
-        if (names != null) {
-            while (names.hasMoreElements()) {
-                String key = (String) names.nextElement();
-                envList.add(key + "=" + props.getProperty(key)); //$NON-NLS-1$
-            }
-            env = envList.toArray(new String[envList.size()]);
-        }
-        return env;
-    }
+	protected String[] setEnvironment(ICommandLauncher launcher, Properties initialEnv) {
+		Properties props = getEnvMap(launcher, initialEnv);
+		String[] env = null;
+		ArrayList<String> envList = new ArrayList<String>();
+		Enumeration<?> names = props.propertyNames();
+		if (names != null) {
+			while (names.hasMoreElements()) {
+				String key = (String) names.nextElement();
+				envList.add(key + "=" + props.getProperty(key)); //$NON-NLS-1$
+			}
+			env = envList.toArray(new String[envList.size()]);
+		}
+		return env;
+	}
 
 
 	/**

build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/core/ExternalBuildRunner.java

@@ -47,7 +47,6 @@ import org.eclipse.cdt.managedbuilder.macros.IBuildMacroProvider;
 import org.eclipse.cdt.newmake.internal.core.StreamMonitor;
 import org.eclipse.cdt.utils.CommandLineUtil;
 import org.eclipse.cdt.utils.EFSExtensionManager;
-import org.eclipse.cdt.utils.PathUtil;
 import org.eclipse.core.resources.IMarker;
 import org.eclipse.core.resources.IProject;
 import org.eclipse.core.resources.IResource;
@@ -140,7 +139,7 @@ public class ExternalBuildRunner extends AbstractBuildRunner {
 				if(pathFromURI == null) {
 					throw new CoreException(new Status(IStatus.ERROR, ManagedBuilderCorePlugin.PLUGIN_ID, ManagedMakeMessages.getString("ManagedMakeBuilder.message.error"), null)); //$NON-NLS-1$
 				}
-				
+
 				IPath workingDirectory = new Path(pathFromURI);
 
 				String[] targets = getTargets(kind, builder);
@@ -197,10 +196,10 @@ public class ExternalBuildRunner extends AbstractBuildRunner {
 						// Do not allow the cancel of the refresh, since the builder is external
 						// to Eclipse, files may have been created/modified and we will be out-of-sync.
 						// The caveat is for huge projects, it may take sometimes at every build.
-						
+
 						// TODO should only refresh output folders
 						//project.refreshLocal(IResource.DEPTH_INFINITE, null);
-						
+
 						// use the refresh scope manager to refresh
 						RefreshScopeManager refreshManager = RefreshScopeManager.getInstance();
 						IWorkspaceRunnable runnable = refreshManager.getRefreshRunnable(project);
@@ -208,32 +207,15 @@ public class ExternalBuildRunner extends AbstractBuildRunner {
 					} catch (CoreException e) {
 					}
 				} else {
-					buf = new StringBuffer(launcher.getCommandLine()).append(NEWLINE);
 					errMsg = launcher.getErrorMessage();
 				}
 				project.setSessionProperty(qName, !monitor.isCanceled() && !isClean ? new Integer(streamMon.getWorkDone()) : null);
 
 				if (errMsg != null) {
-					// Launching failed, trying to figure out possible cause
-					String errorPrefix = ManagedMakeMessages.getResourceString("ManagedMakeBuilder.error.prefix"); //$NON-NLS-1$
-					String buildCommandStr = buildCommand.toString();
-					String envPath = envMap.get(PATH_ENV);
-					if (envPath==null) {
-						envPath = System.getenv(PATH_ENV);
-					}
-					if (PathUtil.findProgramLocation(buildCommandStr, envPath)==null) {
-						buf.append(errMsg).append(NEWLINE);
-						errMsg = ManagedMakeMessages.getFormattedString("ManagedMakeBuilder.message.program.not.in.path", buildCommandStr); //$NON-NLS-1$
-						buf.append(errorPrefix).append(errMsg).append(NEWLINE);
-						buf.append(NEWLINE);
-						buf.append(PATH_ENV+"=["+envPath+"]").append(NEWLINE); //$NON-NLS-1$//$NON-NLS-2$
-					} else {
-						buf.append(errorPrefix).append(errMsg).append(NEWLINE);
-					}
-					consoleErr.write(buf.toString().getBytes());
+					consoleErr.write(errMsg.getBytes());
 					consoleErr.flush();
 				}
-				
+
 				buf = new StringBuffer(NEWLINE);
 				buf.append(ManagedMakeMessages.getResourceString("ManagedMakeBuilder.message.build.finished")).append(NEWLINE); //$NON-NLS-1$
 				consoleOut.write(buf.toString().getBytes());
@@ -310,15 +292,15 @@ public class ExternalBuildRunner extends AbstractBuildRunner {
 				envMap.put(var.getName(), var.getValue());
 			}
 		}
-		
+
 		// Add variables from build info
 		Map<String, String> builderEnv = builder.getExpandedEnvironment();
 		if (builderEnv != null)
 			envMap.putAll(builderEnv);
-		
+
 		return envMap;
 	}
-	
+
 	protected static String[] getEnvStrings(Map<String, String> env) {
 		// Convert into env strings
 		List<String> strings= new ArrayList<String>(env.size());
@@ -327,10 +309,10 @@ public class ExternalBuildRunner extends AbstractBuildRunner {
 			buffer.append('=').append(entry.getValue());
 			strings.add(buffer.toString());
 		}
-		
+
 		return strings.toArray(new String[strings.size()]);
 	}
-	
+
 	private ConsoleOutputSniffer createBuildOutputSniffer(OutputStream outputStream,
 			OutputStream errorStream,
 			IProject project,

build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/buildmodel/CommandBuilder.java

@@ -21,8 +21,6 @@ import java.util.Set;
 import org.eclipse.cdt.core.CommandLauncher;
 import org.eclipse.cdt.core.ICommandLauncher;
 import org.eclipse.cdt.managedbuilder.buildmodel.IBuildCommand;
-import org.eclipse.cdt.managedbuilder.internal.core.ManagedMakeMessages;
-import org.eclipse.cdt.utils.PathUtil;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IProgressMonitor;
 import org.eclipse.core.runtime.SubProgressMonitor;
@@ -90,9 +88,7 @@ public class CommandBuilder implements IBuildModelBuilder {
 	 * @see org.eclipse.cdt.managedbuilder.internal.builddescription.IBuildDescriptionBuilder#build(java.io.OutputStream, java.io.OutputStream, org.eclipse.core.runtime.IProgressMonitor)
 	 */
 	@Override
-	public int build(OutputStream out, OutputStream err,
-			IProgressMonitor monitor){
-
+	public int build(OutputStream out, OutputStream err, IProgressMonitor monitor){
 		//TODO: should we display the command line here?
 		monitor.beginTask("", getNumCommands());	//$NON-NLS-1$
 		monitor.subTask(""/*getCommandLine()*/);	//$NON-NLS-1$
@@ -112,17 +108,18 @@ public class CommandBuilder implements IBuildModelBuilder {
 			return STATUS_ERROR_LAUNCH;
 		}
 
+		int st = ICommandLauncher.ILLEGAL_COMMAND;
 		if (fProcess != null) {
 			try {
 				// Close the input of the process since we will never write to it
 				fProcess.getOutputStream().close();
 			} catch (IOException e) {
 			}
+			//wrapping out and err streams to avoid their closure
+			st = launcher.waitAndRead(wrap(out), wrap(err),
+					new SubProgressMonitor(monitor,	getNumCommands()));
 		}
 
-		//wrapping out and err streams to avoid their closure
-		int st = launcher.waitAndRead(wrap(out), wrap(err),
-				new SubProgressMonitor(monitor,	getNumCommands()));
 		switch(st){
 		case ICommandLauncher.OK:
 			if(fProcess.exitValue() != 0)
@@ -143,19 +140,7 @@ public class CommandBuilder implements IBuildModelBuilder {
 			if(DbgUtil.DEBUG)
 				DbgUtil.trace("error launching the command: " + fErrMsg);	//$NON-NLS-1$
 
-			String program = fCmd.getCommand().toOSString();
-			String envPath = fCmd.getEnvironment().get(PATH_ENV);
-			if (envPath==null) {
-				envPath = System.getenv(PATH_ENV);
-			}
-			if (PathUtil.findProgramLocation(program, envPath)==null) {
-				printMessage(fErrMsg, out);
-				String errMsg = ManagedMakeMessages.getFormattedString("ManagedMakeBuilder.message.program.not.in.path", program); //$NON-NLS-1$
-				printErrorMessage(errMsg + NEWLINE, out);
-				printMessage(null, PATH_ENV+"=["+envPath+"]", out); //$NON-NLS-1$//$NON-NLS-2$
-			} else {
-				printErrorMessage(fErrMsg, out);
-			}
+			printMessage(fErrMsg, out);
 			break;
 		}
 
@@ -185,14 +170,10 @@ public class CommandBuilder implements IBuildModelBuilder {
 		return list.toArray(new String[list.size()]);
 	}
 
-	private void printMessage(String prefix, String msg, OutputStream os){
+	protected void printMessage(String msg, OutputStream os){
 		if (os != null) {
-			if (prefix==null) {
-				prefix=""; //$NON-NLS-1$
-			}
-			msg = prefix + msg + NEWLINE;
 			try {
-				os.write(msg.getBytes());
+				os.write((msg + NEWLINE).getBytes());
 				os.flush();
 			} catch (IOException e) {
 				// ignore;
@@ -201,22 +182,6 @@ public class CommandBuilder implements IBuildModelBuilder {
 
 	}
 
-	protected void printMessage(String msg, OutputStream os){
-		if (os != null) {
-			msg = ManagedMakeMessages.getFormattedString("InternalBuilder.msg.header", msg); //$NON-NLS-1$
-			printMessage(null, msg, os);
-		}
-
-	}
-
-	private void printErrorMessage(String msg, OutputStream os){
-		if (os != null) {
-			String errorPrefix = ManagedMakeMessages.getResourceString("ManagedMakeBuilder.error.prefix"); //$NON-NLS-1$
-			printMessage(errorPrefix, msg, os);
-		}
-
-	}
-
 	public int getNumCommands() {
 		return 1;
 	}

core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/CommandLauncher.java

@@ -35,6 +35,7 @@ public class CommandLauncher implements ICommandLauncher {
 	public final static int OK = ICommandLauncher.OK;
 
 	private static final String PATH_ENV = "PATH"; //$NON-NLS-1$
+	private static final String NEWLINE = System.getProperty("line.separator", "\n"); //$NON-NLS-1$ //$NON-NLS-2$
 
 	protected Process fProcess;
 	protected boolean fShowCommand;
@@ -42,8 +43,6 @@ public class CommandLauncher implements ICommandLauncher {
 	private Properties fEnvironment = null;
 
 	protected String fErrorMessage = ""; //$NON-NLS-1$
-
-	private String lineSeparator;
 	private IProject fProject;
 
 	/**
@@ -59,7 +58,6 @@ public class CommandLauncher implements ICommandLauncher {
 	public CommandLauncher() {
 		fProcess = null;
 		fShowCommand = false;
-		lineSeparator = System.getProperty("line.separator", "\n"); //$NON-NLS-1$ //$NON-NLS-2$
 	}
 
 	/* (non-Javadoc)
@@ -161,22 +159,17 @@ public class CommandLauncher implements ICommandLauncher {
 	 * @see org.eclipse.cdt.core.ICommandLauncher#execute(IPath, String[], String[], IPath, IProgressMonitor)
 	 */
 	@Override
-	public Process execute(IPath commandPath, String[] args, String[] env, IPath changeToDirectory, IProgressMonitor monitor) throws CoreException {
+	public Process execute(IPath commandPath, String[] args, String[] env, IPath workingDirectory, IProgressMonitor monitor) throws CoreException {
+		Boolean isFound = null;
+		String command = commandPath.toOSString();
+		String envPathValue = (String) getEnvironment().get(PATH_ENV);
 		try {
-			String command = commandPath.toOSString();
 			fCommandArgs = constructCommandArray(command, args);
-			fEnvironment = parseEnv(env);
-
-			File file = null;
-
-			if(changeToDirectory != null)
-				file = changeToDirectory.toFile();
-
 			if (Platform.getOS().equals(Platform.OS_WIN32)) {
 				// Handle cygwin link
-				String envPathValue = (String) getEnvironment().get(PATH_ENV);
 				IPath location = PathUtil.findProgramLocation(command, envPathValue);
-				if(location != null) {
+				isFound = location != null;
+				if (location != null) {
 					try {
 						fCommandArgs[0] = Cygwin.cygwinToWindowsPath(location.toString(), envPathValue);
 					} catch (Exception e) {
@@ -185,11 +178,33 @@ public class CommandLauncher implements ICommandLauncher {
 				}
 			}
 
-			fProcess = ProcessFactory.getFactory().exec(fCommandArgs, env, file);
+			fEnvironment = parseEnv(env);
+			File dir = workingDirectory != null ? workingDirectory.toFile() : null;
+
+			fProcess = ProcessFactory.getFactory().exec(fCommandArgs, env, dir);
 			fCommandArgs[0] = command; // to print original command on the console
 			fErrorMessage = ""; //$NON-NLS-1$
 		} catch (IOException e) {
-			setErrorMessage(e.getMessage());
+			if (isFound == null) {
+				IPath location = PathUtil.findProgramLocation(command, envPathValue);
+				isFound = location != null;
+			}
+
+			String errorMessage = getCommandLineQuoted(fCommandArgs, true);
+			String exMsg = e.getMessage();
+			if (exMsg != null && !exMsg.isEmpty()) {
+				errorMessage = errorMessage + exMsg + NEWLINE;
+			}
+
+			if (!isFound) {
+				if (envPathValue == null) {
+					envPathValue = System.getenv(PATH_ENV);
+				}
+				errorMessage = errorMessage + NEWLINE
+						+ "Error: Program \"" + command + "\" not found in PATH" + NEWLINE
+						+ "PATH=[" + envPathValue + "]" + NEWLINE;
+			}
+			setErrorMessage(errorMessage);
 			fProcess = null;
 		}
 		return fProcess;
@@ -254,23 +269,10 @@ public class CommandLauncher implements ICommandLauncher {
 		return state;
 	}
 
-	@SuppressWarnings("nls")
 	protected void printCommandLine(OutputStream os) {
 		if (os != null) {
-			StringBuffer buf = new StringBuffer();
-			if (fCommandArgs != null) {
-				for (String commandArg : getCommandArgs()) {
-					if (commandArg.contains(" ") || commandArg.contains("\"") || commandArg.contains("\\")) {
-						commandArg = '"' + commandArg.replaceAll("\\\\", "\\\\\\\\").replaceAll("\"", "\\\\\"") + '"';
-					}
-					buf.append(commandArg);
-					buf.append(' ');
-				}
-				buf.append(lineSeparator);
-			}
-
 			try {
-				os.write(buf.toString().getBytes());
+				os.write(getCommandLineQuoted(getCommandArgs(), true).getBytes());
 				os.flush();
 			} catch (IOException e) {
 				// ignore;
@@ -278,18 +280,26 @@ public class CommandLauncher implements ICommandLauncher {
 		}
 	}
 
-	protected String getCommandLine(String[] commandArgs) {
+	@SuppressWarnings("nls")
+	private String getCommandLineQuoted(String[] commandArgs, boolean quote) {
 		StringBuffer buf = new StringBuffer();
-		if (fCommandArgs != null) {
+		if (commandArgs != null) {
 			for (String commandArg : commandArgs) {
+				if (quote && (commandArg.contains(" ") || commandArg.contains("\"") || commandArg.contains("\\"))) {
+					commandArg = '"' + commandArg.replaceAll("\\\\", "\\\\\\\\").replaceAll("\"", "\\\\\"") + '"';
+				}
 				buf.append(commandArg);
 				buf.append(' ');
 			}
-			buf.append(lineSeparator);
+			buf.append(NEWLINE);
 		}
 		return buf.toString();
 	}
 
+	protected String getCommandLine(String[] commandArgs) {
+		return getCommandLineQuoted(commandArgs, false);
+	}
+
 
 	/**
 	 * @since 5.1

core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/ICommandLauncher.java

@@ -55,6 +55,7 @@ public interface ICommandLauncher {
 	 * execution.
 	 *
 	 * @return A String corresponding to the error, or <code>null</code> if there has been no error.
+	 *   The message could be multi-line, however it is NOT guaranteed that it ends with end of line.
 	 */
 	public  String getErrorMessage();
 
@@ -95,7 +96,7 @@ public interface ICommandLauncher {
 	 * @param env The list of environment variables in variable=value format.
 	 * @throws CoreException if there is an error executing the command.
 	 */
-	public Process execute(IPath commandPath, String[] args, String[] env, IPath changeToDirectory, IProgressMonitor monitor) throws CoreException;
+	public Process execute(IPath commandPath, String[] args, String[] env, IPath workingDirectory, IProgressMonitor monitor) throws CoreException;
 
 	/**
 	 * Reads output form the process to the streams.