tar -zxvf jpegsrc.v9.tar.gz
cd jpeg9
./configure --enable-shared --enable-static
分别对动态链接库和静态链接库的支持
make
mkdir /usr/local/jpeg9
mkdir /usr/local/jpeg9/include
mkdir /usr/local/jpeg9/lib
mkdir /usr/local/jpeg9/bin
mkdir /usr/local/jpeg9/man
mkdir /usr/local/jpeg9/man/man1
make install