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Re: [cdt-dev] Language settings Provider for compiler(gcc) built ins

Hi Amol,
First you need to understand that language settings providers can be global (and so shared between many projects) or a configuration can keep its own copy of a provider. Providers for built-in settings are normally global/shared by default. If you want  to change it depending on some option you want to assign a modified copy to your configuration. You can instantiate a copy of a provider with LanguageSettingsManager.getExtensionProviderCopy(String id, boolean deep) method.
Second, in your example you got a hold of a copy of project description and configurations. You can modify it but to take effect you need to save it with mngr.setProjectDescription(..).

You can take a look at test cases in org.eclipse.cdt.core.tests/org.eclipse.cdt.core.language.settings.providers. LanguageSettingsPersistenceProjectTests.testProjectDescription_ReadWriteDescription() can be instructive about how to manipulate configuration description.


On Tue, Apr 2, 2013 at 2:41 AM, Amol Deshpande <Amol.Deshpande@xxxxxxxxxxxxxxx> wrote:


Below is my query :



I want to modify the command for LanguageSettingsProvider for compiler (gcc) built in settings.

e.g. I want to modify the command specified in plugin.xml i.e.  gcc -E -P -v -dD ${INPUTS} to gcc -E -P -v -dD ${INPUTS} –option1 –option2 programmatically based on some options.

I tried using the following code, but its not updating the command in ‘Preprocessor Include Paths, Macros -> 'Providers' tab:


ICProjectDescriptionManager mngr = CoreModel.getDefault().getProjectDescriptionManager();

                                                            if (currentConfig.getOwner().getProject() != null){

                                                                      ICProjectDescription projectDescription =

                                                            mngr.getProjectDescription(currentConfig.getOwner().getProject(), true);


                                                                     List<ILanguageSettingsProvider> providers;

                                                                      ICConfigurationDescription cfgDescription =


                                                                     if (cfgDescription instanceof ILanguageSettingsProvidersKeeper) {

                                                                         providers = new



                                                                         for (ILanguageSettingsProvider provider : providers) {

                                                                             if ((provider instanceof  AbstractBuiltinSpecsDetector)) {

                                                                                    String cmd = ((AbstractBuiltinSpecsDetector) provider).getCommand();

                                                                                    cmd = cmd + Constants.SPACE + option1

                                                                                    (( AbstractBuiltinSpecsDetector) provider).setCommand(cmd);


Can anyone give me inputs regarding how to update the command programmatically?




Amol Deshpande

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