xcode CMake，选择Xcode编译器
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CMake, choose Xcode compiler
提问by moka
I know that until recently it was not possible to select any specific compiler for xcode projects generated by CMake (it would always choose xcodes default compiler). Anyways this post: http://cmake.3232098.n2.nabble.com/CMake-2-8-1-available-for-download-td4752230.htmlmakes me believe that it should be possible with a specific CMAKE_XCODE_ATTRIBUTE_flag by now.- Unfortunatelly I could neither find which flag is supposed to change xcodes compiler, nor a list of all xcode flags supported by CMake.
我知道直到最近才可能为 CMake 生成的 xcode 项目选择任何特定的编译器（它总是选择 xcodes 默认编译器）。无论如何，这篇文章：http: //cmake.3232098.n2.nabble.com/CMake-2-8-1-available-for-download-td4752230.html让我相信现在应该可以使用特定的CMAKE_XCODE_ATTRIBUTE_标志.- 不幸的是，我既找不到应该更改 xcodes 编译器的标志，也找不到 CMake 支持的所有 xcode 标志的列表。
I am using Xcode 4.2 and CMake 2.8.6, and I'd like to be able to switch between LLVM 3.0 and LLVM GCC 4.2 from within CMake.
我正在使用 Xcode 4.2 和 CMake 2.8.6，我希望能够从 CMake 中在 LLVM 3.0 和 LLVM GCC 4.2 之间切换。
As I said a list, which lists all xcode flags I can change from within CMake would be great!
正如我所说的，列出我可以在 CMake 中更改的所有 xcode 标志的列表会很棒！
Thanks
谢谢
EDIT:
编辑：
with Cmake 2.8.6, if you want to generate an xcode project that does not default to Clang/LLVM 3.0, use the following:
使用 Cmake 2.8.6，如果要生成不默认为 Clang/LLVM 3.0 的 xcode 项目，请使用以下命令：
set(CMAKE_XCODE_ATTRIBUTE_GCC_VERSION "com.apple.compilers.llvmgcc42")
采纳答案by James
It seems that CMake just transparently sets whatever attribute you set in the XCode Project file - so it supports any and all attributes that you like.
似乎 CMake 只是透明地设置了您在 XCode 项目文件中设置的任何属性 - 因此它支持您喜欢的任何和所有属性。
By inspection of one of my XCode project files, the attribute that you want seems to be GCC_VERSION, and these are the acceptable values (my XCode is 4.0.2, gcc v4.2).
通过检查我的 XCode 项目文件之一，您想要的属性似乎是GCC_VERSION，这些是可接受的值（我的 XCode 是 4.0.2，gcc v4.2）。
GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
GCC_VERSION = 4.2
GCC_VERSION = com.apple.compilers.llvmgcc42
My CMake documentation seems to suggest that you want to set XCODE_ATTRIBUTE_Xnot CMAKE_XCODE_ATTRIBUTE_X, too.
我的 CMake 文档似乎暗示您也不想设置XCODE_ATTRIBUTE_XCMAKE_XCODE_ATTRIBUTE_X。
