centos6搭建Python27+opencv+dlib

基础套餐

yum update
yum groupinstall "Development Tools"

1.升级python到2.7.3

1.1 查看版本，确认是否需要升级

python  -V 

1.2 下载Python-2.7.3

wget http://python.org/ftp/python/2.7.3/Python-2.7.3.tar.bz2

1.3 解压Python-2.7.3

tar -jxvf Python-2.7.3.tar.bz2

1.4 编译安装

cd Python-2.7.3
./configure
make all
make install
make clean
make distclean
source /etc/profile
python  -V  #查看是否已升级到正确版本

2 安装pip

curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
python get-pip.py

3 安装opencv

3.1 安装依赖库

yum install numpy opencv*

3.2 安装opencv

pip install numpy opencv-python

4 安装dlib

4.1 升级gcc到版本4.9.2

4.1.1 下载源码并解压

sudo yum install libmpc-devel mpfr-devel gmp-devel 安装依赖
curl ftp://ftp.mirrorservice.org/sites/sourceware.org/pub/gcc/releases/gcc-4.9.2/gcc-4.9.2.tar.bz2 -O
tar xvfj gcc-4.9.2.tar.bz2

4.1.2 编译安装

cd gcc-4.9.2
./configure --disable-multilib --enable-languages=c,c++
make && make install
source /etc/profile

4.2 安装dlib

##安装boost
yum install boost boost-devel boost-doc 
#安装cmake,编译dlib需要用到
yum install cmake 
#由于dlib默认指定的是/usr/bin/cc和/usr/bin/c++来编译，而我们的gcc-4.9.2安装的目录是/usr/local/bin/
#所以需要把/usr/local/bin/cc和/usr/local/bin/c++软连接到/usr/bin/cc和/usr/bin/c++
#备份
mv /usr/bin/cc /usr/bin/cc4.4.7
mv /usr/bin/c++ /usr/bin/c++4.4.7
#建立软连接
ln -s /usr/local/bin/cc /usr/bin/cc
ln -s /usr/local/bin/c++ /usr/bin/c++
pip install dlib
###若出错c++: internal compiler error: Killed (program cc1plus)则执行
dd if=/dev/zero of=/var/swap.img bs=1024k count=1000
mkswap /var/swap.img
swapon /var/swap.img

4.3 修改库的软连接

#此时运行脚本还是会报错 ImportError: /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.20' not found (required by /usr/local/lib/python2.7/site-packages/dlib/dlib.so
#这是由于读了旧的库，用软连接将库连接到新的
mv /usr/lib64/libstdc++.so.6 /usr/lib64/libstdc++.so.6.old
ln -s /usr/local/lib64/libstdc++.so.6 /usr/lib64/libstdc++.so.6