Qt Creator，项目工具包中的编译器被忽略 [英] Qt Creator, Compiler in kit for project is being ignored

问题描述

我正在运行macOS High Sierra(10.13.2)和Qt 5.10.0.我想在我的应用程序中使用OpenMP.

I am running macOS High Sierra (10.13.2) and Qt 5.10.0. I would like to use OpenMP with my application.

我已在我的.pro文件中添加了以下标志

I have added the following flags to my .pro file

QMAKE_CXXFLAGS += -fopenmp
QMAKE_LFLAGS += -fopenmp
LIBS += -fopenmp

macOS上的默认编译器不包含OpenMP.我通过不支持OpenMP的自制软件安装了gcc.

The default compilers on macOS do not contain OpenMP. I installed gcc through homebrew which does support OpenMP.

在Build&下Qt Creator的运行->编译器选项卡，我添加了自制软件g++和gcc编译器(/usr/local/Cellar/gcc/7.2.0/bin/{gcc-7,g++-7}).然后，我选择了我正在使用的工具包，并将编译器更改为我在编译器"选项卡下添加的自制安装的编译器.

Under the Build & Run -> Compilers tab of Qt Creator, I added the homebrew g++ and gcc compilers (/usr/local/Cellar/gcc/7.2.0/bin/{gcc-7,g++-7}). I then selected the kit that I am using and changed the compiler to be the homebrew installed compiler that I added under the compilers tab.

如果在设置此套件并重建项目后检查Qt Creator生成的Makefile，我会发现CC和CXX没有使用我指定的编译器. 这是它们在Makefile中的值:

If I inspect the Makefile generated by Qt Creator after setting this kit and rebuilding the project, I find the CC and CXX are not using the compiler that I have specified. Here are their values in the Makefile:

CC            = /Library/Developer/CommandLineTools/usr/bin/clang
CXX           = /Library/Developer/CommandLineTools/usr/bin/clang++

这些应该是/usr/local/Cellar/gcc/7.2.0/bin/g++-7和/usr/local/Cellar/gcc/7.2.0/bin/gcc-7.

我现在得到的编译器输出是:

The compiler output that I get now is:

18:14:48:开头:"/usr/bin/make"

18:14:48: Starting: "/usr/bin/make"

/usr/local/Cellar/qt/5.10.0/bin/qmake -o Makefile ../Practice/Practice.pro -spec macx-g ++ CONFIG + =调试CONFIG + = x86_64 CONFIG + = qml_debug

/usr/local/Cellar/qt/5.10.0/bin/qmake -o Makefile ../Practice/Practice.pro -spec macx-g++ CONFIG+=debug CONFIG+=x86_64 CONFIG+=qml_debug

/Library/Developer/CommandLineTools/usr/bin/g ++ -c -pipe -fopenmp -g -std = gnu ++ 11 -arch x86_64 -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX10.13.sdk- mmacosx-version-min = 10.10 -Wall -W -fPIC -DQT_DEPRECATED_WARNINGS -DQT_QML_DEBUG -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB. -I/usr/local/Cellar/qt/5.10.0/lib/QtQuick.framework/Headers -I/usr/local/Cellar/qt/5.10.0/lib/QtGui.framework/Headers -I/usr/local /Cellar/qt/5.10.0/lib/QtQml.framework/Headers -I/usr/local/Cellar/qt/5.10.0/lib/QtNetwork.framework/Headers -I/usr/local/Cellar/qt/5.10 .0/lib/QtCore.framework/Headers -I. -I/Library/Developer/CommandLineTools/SDKs/MacOSX10.13.sdk/System/Library/Frameworks/OpenGL.framework/Headers -I/Library/Developer/CommandLineTools/SDKs/MacOSX10.13.sdk/System/Library/Frameworks /AGL.framework/Headers -I/usr/local/Cellar/qt/5.10.0/mkspecs/macx-g ++ -F/usr/local/Cellar/qt/5.10.0/lib -o main.o ../Practice/main.cpp

/Library/Developer/CommandLineTools/usr/bin/g++ -c -pipe -fopenmp -g -std=gnu++11 -arch x86_64 -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX10.13.sdk -mmacosx-version-min=10.10 -Wall -W -fPIC -DQT_DEPRECATED_WARNINGS -DQT_QML_DEBUG -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I../Practice -I. -I/usr/local/Cellar/qt/5.10.0/lib/QtQuick.framework/Headers -I/usr/local/Cellar/qt/5.10.0/lib/QtGui.framework/Headers -I/usr/local/Cellar/qt/5.10.0/lib/QtQml.framework/Headers -I/usr/local/Cellar/qt/5.10.0/lib/QtNetwork.framework/Headers -I/usr/local/Cellar/qt/5.10.0/lib/QtCore.framework/Headers -I. -I/Library/Developer/CommandLineTools/SDKs/MacOSX10.13.sdk/System/Library/Frameworks/OpenGL.framework/Headers -I/Library/Developer/CommandLineTools/SDKs/MacOSX10.13.sdk/System/Library/Frameworks/AGL.framework/Headers -I/usr/local/Cellar/qt/5.10.0/mkspecs/macx-g++ -F/usr/local/Cellar/qt/5.10.0/lib -o main.o ../Practice/main.cpp

c声:错误:不支持的选项'-fopenmp'

clang: error: unsupported option '-fopenmp'

make:*** [main.o]错误1

make: *** [main.o] Error 1

18:14:49:进程"/usr/bin/make"以代码2退出.

18:14:49: The process "/usr/bin/make" exited with code 2.

在构建/部署项目实践时出错(工具包:台式机) 在执行步骤制作"时

Error while building/deploying project Practice (kit: Desktop) When executing step "Make"

为什么Qt Creator生成的Makefile没有使用我在使用的套件中指定的编译器?

Why is the Makefile generated by Qt Creator not using the compiler that I am specifying in the kit that I am using?

推荐答案

因为您使用的mkspec macx-g++将覆盖CC和CXX设置.作为临时的解决方法，请尝试直接在pro文件中设置它们:

Because the mkspec macx-g++ you're using will override CC and CXX settings. As a temporary workaround, try setting them in the pro file directly:

QMAKE_CC = /usr/local/Cellar/gcc/7.2.0/bin/gcc-7
QMAKE_CXX = /usr/local/Cellar/gcc/7.2.0/bin/g++-7

您可能要为工具包编辑mkspec(或制作一个新的mkspec)并在其中设置这些变量.

You may want to edit the mkspec (or making a new one) for your kit and set those variables there.

要找到mkspec文件(qmake.conf):

To find the mkspec file (qmake.conf):

INSTALLDIR=`qmake -query QT_INSTALL_CONFIGURATION`
MKSPECNAME=`qmake -query QMAKE_SPEC`
cd $INSTALLDIR/mkspecs/$MKSPECNAME

关于为什么必须两次设置编译器的原因:Qt Creator旨在成为通用的c ++ IDE，因此能够管理非Qt项目，这些项目不使用qmake但仍然需要编译器.

As to why you have to set the compilers twice: Qt Creator is meant to be a generic c++ IDE, thus able to manage non-Qt projects, which don't use qmake but need a compiler anyway.

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