We could, and this is approximately how it’s done in ELF. ELF uses undefined symbols to describe all of its references and the symbol’s binding to establish whether the reference is weak. Our model is ...
/usr/bin/ld: libavfilter/libavfilter.a(vf_scale_rga.o): in function scale_rga_config_output_l': /home/hzy/ffmpeg-rk/libavfilter/vf_scale_rga.c:72: undefined reference ...
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