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1、安装依赖工具

yum install autoconf automake libtool libjpeg-devel libpng-devel libtiff-devel zlib-devel

 

2、编译安装leptonica

wget http://www.leptonica.org/source/leptonica-1.74.4.tar.gz
tar zxvf leptonica-1.74.4.tar.gz leptonica-1.74.4
cd leptonica-1.74.4/
./configure --prefix=/usr/local/leptonica
make
make install

 

 3、配置环境变量

vi /etc/profile

添加：
PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/leptonica/lib/pkgconfig
export PKG_CONFIG_PATH
CPLUS_INCLUDE_PATH=$CPLUS_INCLUDE_PATH:/usr/local/leptonica/include/leptonica
export CPLUS_INCLUDE_PATH
C_INCLUDE_PATH=$C_INCLUDE_PATH:/usr/local/leptonica/include/leptonica
export C_INCLUDE_PATH
LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/leptonica/lib
export LD_LIBRARY_PATH
LIBRARY_PATH=$LIBRARY_PATH:/usr/local/leptonica/lib
export LIBRARY_PATH
LIBLEPT_HEADERSDIR=/usr/local/leptonica/include/leptonica
export LIBLEPT_HEADERSDIR
 
source /etc/profile

 

4、编译安装tesseract

git clone https://github.com/tesseract-ocr/tesseract.git
cd tesseract
./autogen.sh
./configure --prefix=/usr/local/tesseract --with-extra-libraries=/usr/local/leptonica/lib   
make
make install
make training
make training-install

 

5、配置环境变量

vi /etc/profile
 
添加：
PATH=$PATH:/usr/local/tesseract/bin
export PATH
 
source /etc/profile 

 

6、测试安装是否成功

tesseract -v

显示：
tesseract 4.00.00alpha
 leptonica-1.74.4
  libgif 4.1.6(?) : libjpeg 6b (libjpeg-turbo 1.2.90) : libpng 1.5.13 : zlib 1.2.7 : libwebp 0.3.0

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