我一直在尝试在 Ubuntu 18.04 上安装 Droidcam，但遇到了无法解决的错误：
root@homelab:/tmp/droidcam-64bit# sudo ./install
Webcam parameters: '640' and '480'
Building v4l2loopback-dc.ko
make: Entering directory '/tmp/droidcam-64bit/v4l2loopback'
make -C /lib/modules/`uname -r`/build M=`pwd`
make[1]: Entering directory '/usr/src/linux-headers-4.18.0-15-generic'
Makefile:970: "Cannot use CONFIG_STACK_VALIDATION=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel"
CC [M] /tmp/droidcam-64bit/v4l2loopback/v4l2loopback-dc.o
Building modules, stage 2.
MODPOST 1 modules
CC /tmp/droidcam-64bit/v4l2loopback/v4l2loopback-dc.mod.o
LD [M] /tmp/droidcam-64bit/v4l2loopback/v4l2loopback-dc.ko
make[1]: Leaving directory '/usr/src/linux-headers-4.18.0-15-generic'
make: Leaving directory '/tmp/droidcam-64bit/v4l2loopback'
Moving driver and executable to system folders
Registering webcam device
insmod: ERROR: could not insert module /lib/modules/4.18.0-15-generic/kernel/drivers/media/video/v4l2loopback-dc.ko: Unknown symbol …