我正在尝试安装 oracle instantclient 以便能够使用 php5_oci8 扩展，但是当我尝试使用alien命令将 rpm 提供的文件转换为 .deb 时，出现以下错误：
vagrant@sherwood:/vagrant/src/packages/oracle-instantclient$ sudo alien -i oracle-instantclient12.1-basic-12.1.0.2.0-1.x86_64.rpm
Package build failed. Here's the log:
dh_testdir
dh_testdir
dh_testroot
dh_prep
dh_installdirs
dh_installdocs
dh_installchangelogs
find . -maxdepth 1 -mindepth 1 -not -name debian -print0 | \
xargs -0 -r -i cp -a {} debian/oracle-instantclient12.1-basic
dh_compress
dh_makeshlibs
dh_installdeb
dh_shlibdeps
dpkg-shlibdeps: error: couldn't find library libclntsh.so.12.1 needed by debian/oracle-instantclient12.1-basic/usr/lib/oracle/12.1/client64/lib/libociei.so (ELF format: 'elf64-x86-64'; RPATH: '')
dpkg-shlibdeps: error: couldn't find library libclntshcore.so.12.1 needed by debian/oracle-instantclient12.1-basic/usr/lib/oracle/12.1/client64/lib/libociei.so (ELF format: 'elf64-x86-64'; …