CentOS 下报错
1.Unable to load shared library 'libdl'
解决方法：创建软链接
#locate libdl
/usr/lib64/libdl-2.17.so
/usr/lib64/libdl.so.2
#cd /usr/lib64
#ln -s libdl-2.17.so libdl.so
2. Unable to load DLL 'libgdiplus'
解决方法：安装libgdiplus
yum install autoconf automake libtool
yum install freetype-devel fontconfig libXft-devel
yum install libjpeg-turbo-devel libpng-devel giflib-devel libtiff-devel libexif-devel
yum install glib2-devel cairo-devel
git clone https://github.com/mono/libgdiplus
cd libgdiplus
./autogen.sh
make
make install
cd /usr/lib64/
ln -s /usr/local/lib/libgdiplus.so gdiplus.dll
若依旧报错，请安装libgdiplus-devel
rpm -ivh http://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
yum install libgdiplus-devel