我正在尝试安装texinfo 5.2，在运行./configure时遇到了一些问题，我认为这些问题与C编译器有关。当我从Snow Leopard升级时，我没有执行干净安装，所以这可能是问题的一部分。无论如何，我得到了以下结果：

ryansmacbook:texinfo-5.2 ryan$ sudo ./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64"                  CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64"                  CPP="gcc -E" CXXCPP="g++ -E"
Password:
checking for a BSD-compatible install... /usr/local/bin/ginstall -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /usr/local/bin/gmkdir -p
checking for gawk... no
checking for mawk... no
checking for nawk... no
checking for awk... awk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking whether UID '0' is supported by ustar format... yes
checking whether GID '0' is supported by ustar format... yes
checking how to create a ustar tar archive... gnutar
checking for perl... /usr/bin/perl
checking Perl version and Encode module... yes
checking for gawk... (cached) awk
checking for gcc... gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64
checking whether the C compiler works... no
configure: error: in `/Users/ryan/Downloads/texinfo-5.2':
configure: error: C compiler cannot create executables
See `config.log' for more details

我已经阅读了与此相关的其他一些问题，因此我尝试安装命令行工具。

ryansmacbook:~ ryan$ xcode-select -p
/Applications/Xcode.app/Contents/Developer

所以看起来它们没有安装，尽管我运行的是从App Store安装的Xcode 5.1。据我所知，命令行工具 * 应该 * 安装，但我已经尝试过了

$ xcode-select --install

无论如何，当我告诉它安装时，会弹出一条消息，说“无法安装软件，因为软件更新服务器当前无法提供该软件”。
我在http://www.topbug.net/blog/2013/04/14/install-and-use-gnu-command-line-tools-in-mac-os-x/中找到了我认为可能的解决方法，因此我执行了以下操作：

ryansmacbook:Tools ryan$ brew install coreutils
Warning: It appears you have MacPorts or Fink installed.
Software installed with other package managers causes known problems for
Homebrew. If a formula fails to build, uninstall MacPorts/Fink and try again.
==> Downloading http://ftpmirror.gnu.org/coreutils/coreutils-8.22.tar.xz
######################################################################## 100.0%
==> ./configure --prefix=/usr/local/Cellar/coreutils/8.22 --program-prefix=g --w
==> make install
==> Caveats
All commands have been installed with the prefix 'g'.

If you really need to use these commands with their normal names, you
can add a "gnubin" directory to your PATH from your bashrc like:

    PATH="/usr/local/opt/coreutils/libexec/gnubin:$PATH"

Additionally, you can access their man pages with normal names if you add
the "gnuman" directory to your MANPATH from your bashrc as well:

    MANPATH="/usr/local/opt/coreutils/libexec/gnuman:$MANPATH"

/usr/local/share/info/dir: Permission denied
==> Summary
🍺  /usr/local/Cellar/coreutils/8.22: 211 files, 10M, built in 2.4 minutes

但是我仍然有./configure的问题。
作为参考，

$ gcc --version
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 5.1 (clang-503.0.38) (based on LLVM 3.4svn)
Target: x86_64-apple-darwin13.1.0
Thread model: posix

虽然前几天我确实尝试安装了gcc-4.7，但它目前位于

/usr/gcc-4.7.2/bin/gcc-4.7

我不太清楚如何从命令行将其作为命令运行，因为

$ gcc-4.7 --version
-bash: gcc-4.7: command not found

是我现在得到的，但这可能不是这里也不是那里。
edit：因为这并没有直接回答我关于检查C编译器是否工作的问题，所以我不会提交这个作为答案。我只是尝试了brew install texinfo，它工作得很好。在这一点上，我真的不记得我为什么要从源代码安装texinfo，也不记得我需要它做什么（可能是GNU Make相关的或Emacs相关的？）