>>Build日期：2015-2-5下午（编译失败）。
开始Linux发行版用的是CentOS 6.5，操作步骤：
1）配置git： git config --global http.sslverify false
2）签出github上的CoreCLR代码库： git clone https://github.com/dotnet/coreclr.git
3）安装cmake： yum install cmake
4）安装clang： yum install clang
5）运行build命令： sh build.sh
6）build结果——失败！错误信息如下：
Commencing CoreCLR Repo build
Checking pre-requisites...
Commencing build of native components for amd64/debug
Invoking cmake with arguments: /data/git/coreclr DEBUG
Detected Linux x86_64
-- Configuring done
-- Generating done
-- Build files have been written to: /data/git/coreclr/binaries/CMake
Executing make
[ 0%] Building CXX object src/pal/src/CMakeFiles/CoreClrPal.dir/exception/seh.cpp.o
In file included from /data/git/coreclr/src/pal/src/exception/seh.cpp:22:
In file included from /usr/bin/../lib/gcc/x86_64-redhat-linux/4.4.7/../../../../include/c++/4.4.7/typeinfo:34:
In file included from /usr/bin/../lib/gcc/x86_64-redhat-linux/4.4.7/../../../../include/c++/4.4.7/exception:148:
/usr/bin/../lib/gcc/x86_64-redhat-linux/4.4.7/../../../../include/c++/4.4.7/exception_ptr.h:143:13: error: unknown type
name 'type_info'
const type_info*
^
1 error generated.
make[2]: *** [src/pal/src/CMakeFiles/CoreClrPal.dir/exception/seh.cpp.o] Error 1
make[1]: *** [src/pal/src/CMakeFiles/CoreClrPal.dir/all] Error 2
make: *** [all] Error 2
Failed to build coreclr components.
【更新】
>>Build日期：2015-2-5晚上（编译成功）。
后来，将遇到的这个问题在github coreclr issue #77中提交了一下，很快有人回复编译器只能用clang 3.5。
看了一下CentOS安装的最新版clang是clang 3.4.2，看来是这个问题引起的。
要到LLVM官网上一看，预编译好的clang 3.5有Ubuntu的版本，但没有CentOS的。
于是，干脆将操作系统换成Ubuntu。在Ubuntu上用apt-get install clang安装，也是clang 3.4，只有手动安装clang 3.5。
手动安装参考的是园子里的这篇博文：在 Linux 下使用 clang 3.0 + llvm 3.0 + libc++。
在Ubuntu中编译CoreCLR的实际操作步骤如下：
1）安装cmake： apt-get install cmake
2）下载预编译好的clang 3.5： wget http://llvm.org/releases/3.5.0/clang+llvm-3.5.0-x86_64-linux-gnu-ubuntu-14.04.tar.xz
3）解压下载好的clang 3.5压缩包： tar xvf clang+llvm-3.5.0-x86_64-linux-gnu-ubuntu-14.04.tar.xz
4）进入解压后的文件夹： cd clang+llvm-3.5.0-x86_64-linux-gnu
5）复制其中的文件至/usr： cp -R * /usr
6）编译CoreCLR： sh build.sh
7）等待编译结果：
Commencing CoreCLR Repo build build.sh: 101: build.sh: Bad substitution build.sh: 161: [: false: unexpected operator Checking pre-requisites... Commencing build of native components for amd64/debug Invoking cmake with arguments: /data/git/coreclr DEBUG Detected Linux x86_64 -- Configuring done -- Generating done -- Build files have been written to: /data/git/coreclr/binaries/CMake Executing make [ 0%] Building CXX object src/pal/src/CMakeFiles/CoreClrPal.dir/exception/seh.cpp.o ...
结果。。。编译成功了！
[100%] Built target mscordaccore Install the project... -- Install configuration: "DEBUG" -- Installing: /data/git/coreclr/binaries/Product/amd64/debug/./corerun -- Installing: /data/git/coreclr/binaries/Product/amd64/debug/./libmscordaccore.so -- Installing: /data/git/coreclr/binaries/Product/amd64/debug/./libcoreclr.so Repo successfully built. Product binaries are available at /data/git/coreclr/binaries/Product/amd64/debug
耶！大功告成！
/data/git/coreclr/binaries/Product/amd64/debug# ls corerun libcoreclr.so libmscordaccore.so
【补充】
GitHub上已经有了专门的参考资料：Building and Running CoreCLR on Linux