解决configure: error: Leptonica 1.74 or higher is required. Try to install libleptonica-dev package错误

具体操作如下：

vi /etc/profile把下面配置添加到最后

export LD_LIBRARY_PATH=$LD_LIBRARY_PAYT:/usr/local/lib
export LIBLEPT_HEADERSDIR=/usr/local/include
export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig

 再执行source /etc/profile命令，让配置立即生效。