安装:libpng       

https://sourceforge.net/projects/libpng/files/

https://sourceforge.net/projects/libpng/files/zlib/

http://www.ijg.org/files/

wget https://nchc.dl.sourceforge.net/project/libpng/libpng16/1.6.36/libpng-1.6.36.tar.gz  # libpng-1.5.22 稳定版
wget https://nchc.dl.sourceforge.net/project/libpng/zlib/1.2.11/zlib-1.2.11.tar.gz
 
 
zlib:
tar zxvf zlib-1.2.11.tar.gz && cd zlib-1.2.11
./configure 
make
make install
cd ../

libpng:
tar zxvf libpng-1.6.36.tar.gz
cd libpng-1.6.36/
mkdir /usr/local/libpng -pv
ls -ld /usr/local/libpng/
./configure --prefix=/usr/local/libpng/  --enable-shared
make check
make install
make check
ldconfig
cd ../

libjpeg:
apt-get install libgtk2.0-dev pkg-config   # 编译opencv的依赖包
wget  http://www.ijg.org/files/jpegsr9c.zip
unzip  jpegsr9c.zip
cd jpeg-9c
mkdir /usr/local/libjpeg/{bin,include,lib,man/man1}
./configure --enable-shared --enable-static --prefix=/usr/local/libjpeg
make
make install

fontconfig:
apt-get install libfreetype6-dev libfontconfig1-dev libgpm-dev
apt-get install fontconfig

安装FreeType      https://sourceforge.net/projects/freetype/files/freetype2/

wget https://nchc.dl.sourceforge.net/project/freetype/freetype2/2.9.1/freetype-2.9.1.tar.bz2
tar -jxf freetype-2.9.1.tar.bz2
cd freetype-2.9.1
./configure --prefix=/usr/local/freetype
make && make install
cd ../