ubuntu18.04 melodic 编译usb_cam
caktkin_make时出错
Checking for module 'libv4l2'
No package 'libv4l2' found
A required package was not found
Cmake error：at /usr/........../FindPkgConfig.cmake:597
usb_cam/CMakeLists.txt:10 (pkg_check_modules)
Cmakelist.txt：第十行pkg_check_modules(video4linux libv4l2 REQUIRED)
可是sudo apt-get install ros-melodic-lib4vl2后
未定义E: 无法定位软件包 ros-melodic-lib4vl2