cmake fails if DRI package not installed (mesa-common-dev)

[edgecase14]

building on Ubuntu 20.10, CMakeLists.txt should handle this case cmake output: .... -- Checking for modules 'gbm;libdrm;libevdev' -- Found gbm, version 20.2.6 -- Found libdrm, version 2.4.102 -- Found libevdev, version 1.9.1 Package dri was not found in the pkg-config search path. Perhaps you should add the directory containing `dri.pc' to the PKG_CONFIG_PATH environment variable No package 'dri' found CMake Error at CMakeLists.txt:218 (string): string sub-command STRIP requires two arguments.

Package dri was not found in the pkg-config search path. Perhaps you should add the directory containing `dri.pc' to the PKG_CONFIG_PATH environment variable No package 'dri' found CMake Error at CMakeLists.txt:220 (string): string sub-command STRIP requires two arguments.

CMake Error at CMakeLists.txt:221 (string): string sub-command REGEX, mode REPLACE needs at least 6 arguments total to command.

CMake Error at CMakeLists.txt:222 (string): string sub-command REGEX, mode REPLACE needs at least 6 arguments total to command.

-- Checking for module 'bcm_host' -- No package 'bcm_host' found ....

[caramelli]

Yes, it will be better to avoid these error messages. In the CMakeLists.txt file, replace:

pkg_check_modules(DRM gbm libdrm libevdev)

with:

pkg_check_modules(DRM dri gbm libdrm libevdev)

I will fix it in the next version. Thanks.