尝试在OS X 10.7.4 x64中运行aclocal命令时找不到Automake / Config.pm

我想在Mac OS X 10.7.4 x64上编译libming 0.4.2的源代码，并在尝试运行时遇到以下错误 aclocal 具有sudo权限的命令：

$ sudo aclocal
Password:
Can't locate Automake/Config.pm in @INC (@INC contains: /usr/bin/../share/automake-1.10
/Library/Perl/5.12/darwin-thread-multi-2level /Library/Perl/5.12
/Network/Library/Perl/5.12/darwin-thread-multi-2level /Network/Library/Perl/5.12
/Library/Perl/Updates/5.12.3 /System/Library/Perl/5.12/darwin-thread-multi-2level
/System/Library/Perl/5.12 /System/Library/Perl/Extras/5.12/darwin-thread-multi-2level
/System/Library/Perl/Extras/5.12 .) at /usr/bin/aclocal line 43.
BEGIN failed--compilation aborted at /usr/bin/aclocal line 43.

Xcode和Xcode命令行工具已安装在系统中。我也能够在Mac OS X 10.6 i386上编译源代码。

可能是什么问题，我该如何解决？

以下步骤适用于OS X 10.7 x64：

1. 安装 MacPorts的

2. 逐个输入以下命令：

   sudo port install automake
   sudo port install autoconf
   sudo port install libtool
   sudo port install intltoo 
   sudo port install pkgconfig
   sudo port install cmake
   sudo glibtoolize --ltdl --force --copy
   sudo autoreconf
   

3. 使用以下命令构建代码：

   sudo ./configure
   sudo make
   sudo make install