cmake HAVE_FILELENGTH examples

rheit/zdoom src/CMakeLists.txt :490 

add_definitions( -DHAVE_FILELENGTH=1 )

Farama-Foundation/ViZDoom src/vizdoom/src/CMakeLists.txt :319 

add_definitions( -DHAVE_FILELENGTH=1 )

umuthopeyildirim/DOOM-Mistral src/vizdoom/src/CMakeLists.txt :320 

add_definitions( -DHAVE_FILELENGTH=1 )