Question

So this is after having dropped $30 for Mac OS 10.7 and having downloaded XCode 4.3.2. After installing the command line tools, the installed version of gcc is still 4.2.4. I need 4.7. I ve installed it and set the g++ link in /usr/bin to it. But when I try to compile any program via QtCreator, I get

未承认的指挥线选择-Xarch_x86_64

I found this discussed in a 3-year-old bug report here, but I really couldn t follow all the different shell commands etc. and my attempt to install liblastfm failed with the same error. The comment here,

The problem is that the GCC/G++ that is normally used to compile stuff on Macs is actually just a wrapper.

And this wrapper has Mac-Only arguments like -Xarch_x86_64, which then get converted into the correct args.

象这样的种子可能会击中头部。 Aaargh! 当然,必须找到某种途径来解决这一问题?

Answer 1

在QtSDK/Desktop/Qt/4.8.1/gcc/mkspecs,我把Macx-g++的双倍推到macx-g++47。然后,我从中删除了“include(./common/g++macx.conf)”,并将其列入内容,但产生错误的部分除外(即:X....)。

我也要结束发言。

QMAKE_CC         = gcc-mp-4.7
QMAKE_CXX        = g++-mp-4.7

QMAKE_LINK       = $$QMAKE_CXX
QMAKE_LINK_SHLIB = $$QMAKE_CXX
QMAKE_LINK_C       = $$QMAKE_CC
QMAKE_LINK_C_SHLIB = $$QMAKE_CC

......与Macx-g++42的光谱相类似。

现在,如果我补充的话,它就在面包店工作。

作出大量努力,以简单易行......爱护更好的方式。

Answer 2

有了几个来源,可以向OSX提供更新的电梯。这里是小选择:

http://hpc.sourceforge.net/ (目前为4.8,以前版本也可能提供)

http://gcc.gnu.org/wiki/GFortranBinaries (单位:4.7.0本安安装器)

I assume that you did install the command line tools from within Xcode. Apple/Xcode is not always up to date with gcc, stability is more important here than bleeding edge.

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