/usr/bin/clang++ -DARCH_STRING=amd64 -DBUILD_ENGINE -DBUILD_TTY_CLIENT -DDAEMON_ARCH_amd64 -DDAEMON_BUILD_Release -DDAEMON_CXX_COMPILER_Clang=1 -DDAEMON_CXX_COMPILER_STRING="Clang 11.0.0 clang++" -DDAEMON_C_COMPILER_Clang=1 -DDAEMON_C_COMPILER_STRING="Clang 11.0.0 clang" -DDAEMON_OpenGL_ABI=LEGACY -DDAEMON_OpenGL_ABI_LEGACY -DDAEMON_USE_ARCH_INTRINSICS=1 -DDAEMON_USE_ARCH_INTRINSICS_amd64=1 -DDAEMON_USE_ARCH_INTRINSICS_i686=1 -DDAEMON_USE_COMPILER_CUSTOMIZATION=1 -DDAEMON_USE_COMPILER_INTRINSICS=1 -DNACL_ANDROID=0 -DNACL_ARCH_STRING=amd64 -DNACL_BUILD_ARCH=x86 -DNACL_BUILD_SUBARCH=64 -DNACL_FREEBSD=0 -DNACL_LINUX=1 -DNACL_OSX=0 -DNACL_WINDOWS=0 -DTHIS_IS_NOT_A_DEBUG_BUILD -DUSE_CURSES -DUSE_CURSES_NCURSES -DUSE_MUMBLE -I/home/vsts/work/1/s/src -I/home/vsts/work/1/s/libs -I/home/vsts/work/1/s/libs/nacl -I/usr/include/ncursesw -I/usr/include/SDL2 -I/usr/include/opus -I/usr/include/freetype2 -I/usr/include/AL -I/home/vsts/work/1/s/src/engine -std=gnu++14 -ffast-math -fvisibility=hidden -fno-strict-aliasing -pthread -march=x86-64 -mtune=generic -mcx16 -O3 -DNDEBUG -D_FORTIFY_SOURCE=2 -Wall -Wextra -Werror -Wno-pragmas -Wno-unknown-pragmas -Wno-error=old-style-cast -Woverloaded-virtual -Wno-error=sign-compare -MD -MT CMakeFiles/ttyclient.dir/src/engine/client/ClientApplication.cpp.o -MF CMakeFiles/ttyclient.dir/src/engine/client/ClientApplication.cpp.o.d -o CMakeFiles/ttyclient.dir/src/engine/client/ClientApplication.cpp.o -c /home/vsts/work/1/s/src/engine/client/ClientApplication.cpp
/home/vsts/work/1/s/src/engine/client/ClientApplication.cpp:95:25: error: use of undeclared identifier 'SDL_HINT_APP_NAME'
SDL_SetHint(SDL_HINT_APP_NAME, PRODUCT_NAME);
^
1 error generated.
The SDL used in the CI (and then in possible users's computer) is probably too old, we may ifdef the SDL version too.