Linux下protobuf的编译与安装

1.下载源码

首先，从github上下载protobuf的源码，地址：https://github.com/google/protobuf,我选择下载2.5.0版本。

2.编译protobuf

将下载的压缩包解压缩

unzip protobuf-2.5..zip

根目录下没有configure文件，却有一个autogen.sh，原来是因为protobuf的编译方式做了修改，要执行autogen.sh才会生成configure脚本。

但在执行autogen.sh时出错了，因为google.com被墙了，虚拟机里无法下载gtest，于是手动下载googletest-release-1.5.0.zip,解压缩后，改名为gtest放在protobuf-2.5.0目录下 
autgen.sh代码片段

 # Check that gtest is present.  Usually it is already there since the
 # directory is set up as an SVN external.
 # 判断是否存在gtest目录
 if test ! -e gtest; then
   echo "Google Test not present.  Fetching gtest-1.5.0 from the web..."
   #如果目录不存在则尝试从google.com下载并解压缩，如果google被墙则下载失败
   curl http://googletest.googlecode.com/files/gtest-1.5.0.tar.bz2 | tar jx
   #将解压缩后的目录改名为gtest
   mv gtest-1.5. gtest
 fi

googletest1.5.0下载地址:https://github.com/google/googletest

 解压缩

 unzip gtest-1.5..zip
 mv gtest-1.5. gtest  

执行protobuf编译

#执行autogen.sh生成configure
又是一堆的错误！！！ 运行./autogen.sh时（用于产生configure,） 出现错误：

 linux-lewph:/home/lewph/Projects/System/build_tslib/tslib # ./autogen.sh
 ./autogen.sh: line : autoreconf: command not found

缺少autoconf这个工具安装：

 yum install -y  autoconf

再次运行./autogen.sh问题又来了：

 linux-lewph:/home/lewph/Projects/System/build_tslib/tslib # ./autogen.sh
 Can't exec "aclocal": No such file or directory at /usr/share/autoconf/Autom4te/FileUtils.pm line 326.
 autoreconf: failed to run aclocal: No such file or directory

 linux-lewph:/home/lewph/Projects/System/build_tslib/tslib # ./autogen.sh
 Can't exec "aclocal": No such file or directory at /usr/share/autoconf/Autom4te/FileUtils.pm line 326.
 autoreconf: failed to run aclocal: No such file or directory   有这个文件，推测，问题出现在exec "aclocal"这里，

用cnf查一下，linux-lewph:/home/lewph/Projects/System/build_tslib/tslib # cnf aclocal

The program 'aclocal' can be found in following packages:
  * automake [ path: /usr/bin/aclocal, repository: zypp (repo-oss) ]
  * automake [ path: /usr/bin/aclocal, repository: zypp (openSUSE 11.2-) ]

安装依赖

 yum  install automake

原来是要用到automake这个工具！安装之！完成以后，再运行./autogen.sh .      问题还有！！！:

 linux-lewph:/home/lewph/Projects/System/build_tslib/tslib # ./autogen.sh
 configure.ac:: error: possibly undefined macro: AC_DISABLE_STATIC
       If this token and others are legitimate, please use m4_pattern_allow.
       See the Autoconf documentation.
 configure.ac:: error: possibly undefined macro: AC_ENABLE_SHARED
 configure.ac:: error: possibly undefined macro: AC_LIBTOOL_DLOPEN
 configure.ac:: error: possibly undefined macro: AC_PROG_LIBTOOL
 autoreconf: /usr/bin/autoconf failed with exit status: 

这是缺少安装包libtool-1.5.22.tar.gz 安装

yum install -y libtool

3.安装protobuf

 ./autogen.sh
 ./configure

 make
 make check

 sudo make install

 4.成功