这是我的家庭brew配置
~ brew update
Already up-to-date.
~ brew doctor
Your system is ready to brew.
~ brew --config
HOMEBREW_VERSION: 0.9.4
ORIGIN: https://github.com/mxcl/homebrew.git
HEAD: 8efa77e7c52200d5f457ba340f71c119bd6cd528
HOMEBREW_PREFIX: /usr/local
HOMEBREW_CELLAR: /usr/local/Cellar
CPU: quad-core 64-bit ivybridge
OS X: 10.8.4-x86_64
Xcode: 4.6.3
CLT: 4.6.0.0.1.1365549073
LLVM-GCC: build 2336
Clang: 4.2 build 425
X11: 2.7.4 => /opt/X11
System Ruby: 1.8.7-358
Perl: /usr/bin/perl
Python: /usr/local/bin/python => /Library/Frameworks/Python.framework/Versions/2.7/bin/python2.7
Ruby: /Users/bill/.rvm/bin/ruby
这是brew install libxml2的输出。
~ brew install libxml2
==> Downloading ftp://xmlsoft.org/libxml2/libxml2-2.9.1.tar.gz
Already downloaded: /Library/Caches/Homebrew/libxml2-2.9.1.tar.gz
==> ./configure --prefix=/usr/local/Cellar/libxml2/2.9.1 --without-python
==> make
==> make install
==> /usr/local/bin/python setup.py install --prefix=/usr/local/Cellar/libxml2/2.9.1
cc -fno-strict-aliasing -fno-common -dynamic -arch ppc -arch i386 -g -O2 -DNDEBUG -g -O3 -D_REENTRANT=1 -I/usr/local/Cellar/libxml2/2.9.1/include/libxml2 -I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk/usr/include -I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c libxml2-py.c -o build/temp.macosx-10.3-fat-2.7/libxml2-py.o
clang: warning: not using the clang compiler for the 'powerpc' architecture
llvm-gcc-4.2: error trying to exec '/usr/bin/../llvm-gcc-4.2/bin/powerpc-apple-darwin11-llvm-gcc-4.2': execvp: No such file or directory
clang: error: gcc frontend command failed with exit code 255 (use -v to see invocation)
error: command 'cc' failed with exit status 255
READ THIS: https://github.com/mxcl/homebrew/wiki/troubleshooting
These open issues may also help:
https://github.com/mxcl/homebrew/issues/20265
我确保我的xCode是最新的（版本4.6.3）并安装了命令行工具。 / usr / local和/ usr / local / Cellar的权限设置正确。我错过了什么？