1.安装相关依赖包
yum install -y gcc libpng libjpeg libpng-devel libjpeg-devel ghostscript libtiff libtiff-devel freetype freetype-devel
2.下载GraphicsMagick
wget ftp://ftp.graphicsmagick.org/pub/GraphicsMagick/1.3/GraphicsMagick-1.3.25.tar.gz
3.解压GraphicsMagick
tar -zxvf GraphicsMagick-1.3.25.tar.gz
4.编译安装
cd GraphicsMagick-1.3.25
./configure --enable-shared
make
make install
5.验证安装
gm version
6.测试
gm convert -scale 100x100 1.png tmpfile.png