src/video/kmsdrm/SDL_kmsdrmvideo.c: fix build
src/video/directfb/SDL_DirectFB_render.c: fix build
src/core/linux/SDL_threadprio.c: fix build without threads
Static build failure with binutils > 2.40
In fact, this issue was already fixed since version 2.1.8 by https://sourceforge.net/p/iperf2/code/ci/81d603dab663e0c3c94a354a69f3f4ce30527097 and https://sourceforge.net/p/iperf2/code/ci/af0ea1dff77aa4e63cda5803dd6db24ace7ca9ff/
In fact, this issue was already fixed by https://sourceforge.net/p/iperf2/code/ci/81d603dab663e0c3c94a354a69f3f4ce30527097 and https://sourceforge.net/p/iperf2/code/ci/af0ea1dff77aa4e63cda5803dd6db24ace7ca9ff/
Merge Request updated
Makefile: add targets to manage static building