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!2 add example for setting environment variables 

Merge pull request !2 from lishifu/master
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opengauss-bot 2020-06-30 20:24:00 +08:00 committed by Gitee
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@ -253,7 +253,7 @@ After the openGauss installation environment is prepared by executing the pre-in
4. After the installation is successful, manually delete the trust between users root on the host, that is, delete the mutual trust file on each openGauss database node.
```
rm –rf ~/.ssh
rm -rf ~/.ssh
```
### Uninstalling the openGauss
@ -342,7 +342,7 @@ To compile openGauss, you need two components: openGauss-server and binarylibs.
- binarylibs: third party open source software that openGauss depends on. You can obtain it by compiling the openGauss-third_party code or downloading from the open source community on which we have compiled a copy and uploaded it . The first method will be introduced in the following chapter.
Before you compile openGauss，please check the OS and software dependency requirements.
Before you compile openGauss, please check the OS and software dependency requirements.
You can compile openGauss by build.sh, a one-click shell tool, which we will introduce later, or compile by command. Also, an installation package is produced by build.sh.
@ -462,12 +462,27 @@ Compilation log: **make_compile.log**
export BINARYLIBS=________ # Path of the binarylibs file
export GAUSSHOME=$CODE_BASE/dest/
export GCC_PATH=$BINARYLIBS/buildtools/***/gcc8.2/
export CC=$GCC_PATH/gcc/bin/gccexport CXX=$GCC_PATH/gcc/bin/g++
export CC=$GCC_PATH/gcc/bin/gcc
export CXX=$GCC_PATH/gcc/bin/g++
export LD_LIBRARY_PATH=$GAUSSHOME/lib:$GCC_PATH/gcc/lib64:$GCC_PATH/isl/lib:$GCC_PATH/mpc/lib/:$GCC_PATH/mpfr/lib/:$GCC_PATH/gmp/lib/:$LD_LIBRARY_PATH
export PATH=$GAUSSHOME/bin:$GCC_PATH/gcc/bin:$PATH
```
For example, on CENTOS X86-64 platform, binarylibs directory is placed as the sibling directory of openGauss-server directory.
The following command can be executed under openGauss-server directory.
```
export CODE_BASE=`pwd`
export BINARYLIBS=`pwd`/../binarylibs
export GAUSSHOME=$CODE_BASE/dest/
export GCC_PATH=$BINARYLIBS/buildtools/centos7.6_x86_64/gcc8.2/
export CC=$GCC_PATH/gcc/bin/gcc
export CXX=$GCC_PATH/gcc/bin/g++
export LD_LIBRARY_PATH=$GAUSSHOME/lib:$GCC_PATH/gcc/lib64:$GCC_PATH/isl/lib:$GCC_PATH/mpc/lib/:$GCC_PATH/mpfr/lib/:$GCC_PATH/gmp/lib/:$LD_LIBRARY_PATH
export PATH=$GAUSSHOME/bin:$GCC_PATH/gcc/bin:$PATH
```
3. Select a version and configure it.
**debug** version: