Qt5/Mac header finding in KDevelop5 (clang parser??)

[Milian Wolff]

On Tuesday, June 21, 2016 10:07:36 AM CEST René J.V. Bertin wrote:
> On Monday June 20 2016 17:29:20 Aleix Pol wrote:
> >> - why does -isystem /path/to/QtCore.framework/Headers not enable
> >> resolving e.g. `#include <QCoreApplication>` given that
> >> /path/to/QtCore.framework/Headers contains both QCoreApplication and
> >> qcoreapplication.h ?>
> >That will be much easier to understand when we have a test.
> 
> I did a search on isystem over both kdevelop and kdevplatform, and saw this,
> in languages/clang/duchain/parsesession.cpp:
> 
> 
>     if (hasQtIncludes(includes.system)) {
>         const auto wrappedQtHeaders =
> QStandardPaths::locate(QStandardPaths::GenericDataLocation,
> QStringLiteral("kdevclangsupport/wrappedQtHeaders"),
> QStandardPaths::LocateDirectory).toUtf8(); if (!wrappedQtHeaders.isEmpty())
> {
>             smartArgs << wrappedQtHeaders;
>             clangArguments << "-isystem" << wrappedQtHeaders.constData();
>             const auto qtCore = wrappedQtHeaders + "/QtCore";
>             smartArgs << qtCore;
>             clangArguments << "-isystem" << qtCore.constData();
>         }
>     }
> 
> That seems like it might be related.
> 
> FWIW, even on Linux that file didn't get parse correctly initially, with I
> think the main culprit being the fact that <QList> isn't found:
> 
> %> env KDEV_CLANG_DISPLAY_ARGS=1 KDEV_CLANG_DISPLAY_DIAGS=1 kdevelop5 --ps &
> Invocation: clang -ferror-limit=100 -fspell-checking -Wdocumentation
> -Wunused-parameter -Wunreachable-code -Wall -std=c++11 -nostdinc
> -nostdinc++ -xc++ -isystem/usr/include/c++/5
> -isystem/usr/include/x86_64-linux-gnu/c++/5
> -isystem/usr/include/c++/5/backward -isystem/usr/local/include
> -isystem/usr/lib/llvm-3.8/lib/clang/3.8.1/include
> -isystem/usr/include/x86_64-linux-gnu -isystem/include -isystem/usr/include
> -imacros /tmp/kdevelop.J17152
> /home/bertin/work/src/Scratch/KDE/KF5/kdevelop-git-5/languages/clang/duchai
> n/parsesession.cpp
> /home/bertin/work/src/Scratch/KDE/KF5/kdevelop-git-5/languages/clang/duchai
> n/parsesession.h:26:10: fatal error: 'QList' file not found Invocation:
> clang -ferror-limit=100 -fspell-checking -Wdocumentation -Wunused-parameter
> -Wunreachable-code -Wall -std=c++11 -nostdinc -nostdinc++ -xc++ -include
> /opt/local/share/kdevclangsupport/gcc_compat.h -isystem
> /opt/local/share/kdevclangsupport/wrappedQtHeaders -isystem
> /opt/local/share/kdevclangsupport/wrappedQtHeaders/QtCore
> -isystem/opt/local/include/qt5 -isystem/usr/lib/llvm-3.5/include
> -isystem/opt/local/include/qt5 -isystem/opt/local/include/qt5/QtCore
> -isystem/opt/local/share/qt5/mkspecs/linux-g++-64
> -isystem/opt/local/include/KF5/KTextEditor -isystem/opt/local/include/KF5
> -isystem/opt/local/include/KF5/KParts
> -isystem/opt/local/include/KF5/KIOWidgets
> -isystem/opt/local/include/KF5/KIOCore
> -isystem/opt/local/include/KF5/KCoreAddons
> -isystem/opt/local/include/KF5/KService
> -isystem/opt/local/include/KF5/KConfigCore
> -isystem/opt/local/include/KF5/KJobWidgets
> -isystem/opt/local/include/qt5/QtWidgets
> -isystem/opt/local/include/qt5/QtGui
> -isystem/opt/local/include/qt5/QtNetwork
> -isystem/opt/local/include/KF5/KCompletion
> -isystem/opt/local/include/KF5/KWidgetsAddons
> -isystem/opt/local/include/KF5/KXmlGui
> -isystem/opt/local/include/qt5/QtDBus -isystem/opt/local/include/qt5/QtXml
> -isystem/opt/local/include/KF5/KConfigWidgets
> -isystem/opt/local/include/KF5/KCodecs
> -isystem/opt/local/include/KF5/KConfigGui
> -isystem/opt/local/include/KF5/KAuth
> -isystem/opt/local/include/KF5/KTextWidgets
> -isystem/opt/local/include/KF5/SonnetUi
> -isystem/opt/local/include/KF5/KI18n
> -isystem/opt/local/include/KF5/ThreadWeaver
> -isystem/opt/local/include/kdevplatform -isystem/opt/local/include
> -isystem/opt/local/include/KF5/KItemModels
> -isystem/usr/lib/llvm-3.5/include -isystem/usr/include/c++/5
> -isystem/usr/include/x86_64-linux-gnu/c++/5
> -isystem/usr/include/c++/5/backward
> -isystem/usr/lib/gcc/x86_64-linux-gnu/5/include -isystem/usr/local/include
> -isystem/usr/lib/gcc/x86_64-linux-gnu/5/include-fixed
> -isystem/usr/include/x86_64-linux-gnu -isystem/usr/include
> -I/home/bertin/work/src/Scratch/KDE/KF5/kdevelop-git-5/build/languages/clan
> g -I/home/bertin/work/src/Scratch/KDE/KF5/kdevelop-git-5/languages/clang
> -I/home/bertin/work/src/Scratch/KDE/KF5/kdevelop-git-5
> -I/home/bertin/work/src/Scratch/KDE/KF5/kdevelop-git-5/build
> -I/home/bertin/work/src/Scratch/KDE/KF5/kdevelop-git-5/languages/clang/libs
> -I/home/bertin/work/src/Scratch/KDE/KF5/kdevelop-git-5/languages/plugin
> -imacros /tmp/kdevelop.K17152
> /home/bertin/work/src/Scratch/KDE/KF5/kdevelop-git-5/languages/clang/duchai
> n/parsesession.cpp

^-- this is unrelated to the code snippet. It looks like an error while 
parsing parsesession.cpp in the editor, no? It's not an error inside the 
wrapped Qt header itself (or I'm not seeing it).

> /opt/local/include/qt5/QtCore/qcompilerdetection.h:630:38: error: token is
> not a valid binary operator in a preprocessor subexpression

^-- what is the contents of that line?

> /usr/lib/gcc/x86_64-linux-gnu/5/include/xmmintrin.h:777:28: error: cannot
> initialize a parameter of type '__attribute__((__vector_size__(2 *
> sizeof(int)))) int *' with an rvalue of type '__v2sf *' (etc)

^-- you are using GCC on Mac? Bad idea, better use clang instead to get the 
system headers and include paths.

-- 
Milian Wolff
mail at milianw.de
http://milianw.de