如何抑制包含在标题中的文件的警告

问题描述

我在我的Qt项目中使用GCC -Weffc ++ 选项。为了抑制来自Qt头文件的警告，我添加了 QMAKE_CXXFLAGS + = -isystem $（QTDIR）\include 。

但是这并没有抑制所有的警告，因为 $（QTDIR）\include\QtCore\quuid.h
$ b $，所以我仍然从 QUuid 类中感到恼人的警告b文件包含

.. \\\\rc \corelib\plugin\quuid.h 。

我尝试添加

QMAKE_CXXFLAGS + = - 系统$（QTDIR）\ src


和

QMAKE_CXXFLAGS + = - 系统$（QTDIR）\src\corelib\plugin

但它没有帮助。有没有办法解决这个问题？

I use GCC -Weffc++ option in my Qt project. To suppress warnings from Qt headers i add QMAKE_CXXFLAGS += -isystem $(QTDIR)\include.
But this doesn't suppress all warnings, i still get annoying warnings from QUuid class because $(QTDIR)\include\QtCore\quuid.h
file includes
..\..\src\corelib\plugin\quuid.h.
I tried to add
QMAKE_CXXFLAGS += -isystem $(QTDIR)\src
and
QMAKE_CXXFLAGS += -isystem $(QTDIR)\src\corelib\plugin
but it didn't help. Is there a way to fix this?

推荐答案

您需要单独禁用每个目录。示例来自我的项目：

You need to suppress each directory separately. Example from my project:

QMAKE_CXXFLAGS += -isystem "$$[QT_INSTALL_HEADERS]/qt5" -isystem "$$[QT_INSTALL_HEADERS]/qt5/QtWidgets" \
                  -isystem "$$[QT_INSTALL_HEADERS]/QtXml" -isystem "/usr/include/qt5/QtGui" \
                  -isystem "$$[QT_INSTALL_HEADERS]/QtCore"

或者，为了自动执行上述操作，您已经启用了精确的Qt模块：

Or, to automate the above for the exact Qt modules you have enabled:

for (inc, QT) {
    QMAKE_CXXFLAGS += -isystem \"$$[QT_INSTALL_HEADERS]/Qt$$system("echo $$inc | sed 's/.*/\u&/'")\"
}

# Still need this separately:
QMAKE_CXXFLAGS += -isystem "$$[QT_INSTALL_HEADERS]/qt5"

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