QT Creator adds -Xarch

Question

I was using the QT Creator with an old GCC, now i updated to the 4.8 version. But the QT Creator adds a -Xarch_x86_64 option, the GCC 4.8 tells me

g++: error         


        

Answer 1

I had the same problem using GCC installed via MacPorts (tested several versions up to gcc5). The solution for me was using g++ supplied with the XCode command line tools. I uninstalled all MacPorts GCC versions. Below version details of the g++ command that worked.

$ g++ --version
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 6.0 (clang-600.0.51) (based on LLVM 3.5svn)
Target: x86_64-apple-darwin13.4.0
Thread model: posix

Answer 2

I removed all the references using.

QMAKE_CFLAGS_PPC_64     -= -arch ppc64 -Xarch_ppc64 -mmacosx-version-min=10.5
QMAKE_OBJECTIVE_CFLAGS_PPC_64  -= -arch ppc64 -Xarch_ppc64 -mmacosx-version-min=10.5
QMAKE_CFLAGS_X86_64     -= -arch x86_64 -Xarch_x86_64 -mmacosx-version-min=10.5
QMAKE_OBJECTIVE_CFLAGS_X86_64  -= -arch x86_64 -Xarch_x86_64 -mmacosx-version-min=10.5
QMAKE_CXXFLAGS_PPC_64   -= -arch ppc64 -Xarch_ppc64 -mmacosx-version-min=10.5
QMAKE_CXXFLAGS_X86_64   -= -arch x86_64 -Xarch_x86_64 -mmacosx-version-min=10.5
QMAKE_LFLAGS_PPC_64     -= -arch ppc64 -Xarch_ppc64 -mmacosx-version-min=10.5
QMAKE_LFLAGS_X86_64     -= -arch x86_64 -Xarch_x86_64 -mmacosx-version-min=10.5

It solved my problem

Answer 3

Another way to resolve this problem is to edit the file for the compiler configuration for the specific qt version and the specific target build.

See this post.

In my case this conf file is:

/usr/local/Qt4.8/mkspecs/common/g++-macx.conf

And the changes are:

QMAKE_CFLAGS_X86_64 += -Xarch_x86_64 -mmacosx-version-min=10.5
QMAKE_CFLAGS_PPC_64 += -Xarch_ppc64 -mmacosx-version-min=10.5

to

QMAKE_CFLAGS_X86_64 += -Xarch_x86_64 -mmacosx-version-min=10.7
QMAKE_CFLAGS_PPC_64 += -Xarch_ppc64 -mmacosx-version-min=10.7

Please see the linked post from natoferreira in the Q&A of opencv website. Also this post mention this file.

Please add a comment if you know other information about this configuration file for Qt and GCC.