Bug 59047 – [Qt] REGRESSION (r81479): build-webkit warning Inspector.idl is missing

• Component: WebKit Qt
• Status: RESOLVED FIXED

[Rafael Brandao]

When you run "Tools/Scripts/build-webkit --qt --release" you get this warning:

Reading (...)/WebKit/Source/WebCore/DerivedSources.pro [(...)/WebKit/WebKitBuild/Release/WebCore]
WARNING: Failure to find: generated/Inspector.idl


I'm using WebKit (r84398) with Qt (v4.7.4).

[Rafael Brandao]

The patch that caused this regression adds a generator and it should generate Inspector.idl before anything needs it.

If you change the line that contains "inspectorIDL.input = INSPECTOR_IDL" to "inspectorIDL.input = $${WC_GENERATED_SOURCES_DIR}/Inspector.idl" on Source/WebCore/CodeGenerators.pri, the warning disappear. The problem is the build will not succeed in this case. For some yet unknown reason, the file "InspectorFrontend.h" is not generated, but necessary to "InspectorDebuggerAgent.h".

[Rafael Brandao]

Nevermind, I've figured out that when you create a qmake target, the input value expects a variable that contains the files that should be processed, so changing it to the files itself makes it stop working, that's why the warning was not showing up, and that also explains why the files did not generate after all.

[Rafael Brandao]

Created attachment 91759 [details]
Added variable_out to pipe output from one compiler to another and then forced the output to be added to the sources.

It was necessary to use variable_out to disable the annoying warning (http://bugreports.qt.nokia.com/browse/QTBUG-18938). As that variable should be added as input of the other generator, and this generator was used first in WebCore/DerivedSources.pro and then later at WebKit/qt/QtWebKit.pro, there was an issue with the input value, as it wasn't set at the later moment, and that would make the output to not be added to the sources. So I've made use of this already existing attribute called "wkExtraSources" to make sure that, in this special case, the output would be added anyway.

[Rafael Brandao]

Created attachment 91763 [details]
Added variable_out to pipe output from one compiler to another and then forced the output to be added to the sources.

It was necessary to use variable_out to disable the annoying warning (http://bugreports.qt.nokia.com/browse/QTBUG-18938). As that variable should be added as input of the other generator, and this generator was used first in WebCore/DerivedSources.pro and then later at WebKit/qt/QtWebKit.pro, there was an issue with the input value, as it wasn't set at the later moment, and that would make the output to not be added to the sources. So I've made use of this already existing attribute called "wkExtraSources" to make sure that, in this special case, the output would be added anyway.

[Andras Becsi]

Comment on attachment 91763 [details]
Added variable_out to pipe output from one compiler to another and then forced the output to be added to the sources.

LGTM, though I'm not a reviewer.

Thanks for fixing this.

[Csaba Osztrogonác]

Comment on attachment 91763 [details]
Added variable_out to pipe output from one compiler to another and then forced the output to be added to the sources.

Great fix, r=me.

[WebKit Commit Bot]

Comment on attachment 91763 [details]
Added variable_out to pipe output from one compiler to another and then forced the output to be added to the sources.

Clearing flags on attachment: 91763

Committed r85412: <http://trac.webkit.org/changeset/85412>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.