编译Mesa：configure: error: Could not find llvm shared libraries

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编译Mesa时，已经根据错误提示安装了LLVM 3.5.0，但是仍然报如下错误：

checking for RADEON... yes
configure: error: Could not find llvm shared libraries:
   Please make sure you have built llvm with the --enable-shared option
   and that your llvm libraries are installed in /usr/local/lib
   If you have installed your llvm libraries to a different directory you
   can use the --with-llvm-prefix= configure flag to specify this directory.
   NOTE: Mesa is attempting to use llvm shared libraries by default.
   If you do not want to build with llvm shared libraries and instead want to
   use llvm static libraries then add --disable-llvm-shared-libs to your configure
   invocation and rebuild.

一番周折可以参考我的这篇文章。在我的电脑上：Ubuntu12.04，64bit。尝试了源码编译3.5.0，二进制3.4.2都失败，都是报这个错误！最后我是退而求其次的用了稳定版本3.3（

llvm-3.3.src.tar.gz和cfe-3.3.src.tar.gz），安装步骤如下：

1）将解压后的cfe-3.3.src.tar.gz文件夹名称改为clang：

sudo cp -r cfe-3.3.src clangcd llvm-3.3.src/tools/sudo mv ../../clang/ ./

2）重新编译安装llvm和clang

cd llvm-3.3.src/sudo ./configure <code class="western">--enable-shared=yes</code>sudo makesudo make install

错误消失。

说明：这个3.3版本看来公认比较稳定，高版本3.5.0里面编译时候不需要设置--enable-shared=yes，因为它已经默认被设置为ON了，但是不知道为啥编译完Mesa就是找不到共享库。

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