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一個用新toolchain的error #2

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CheckHarry opened this issue Feb 13, 2022 · 0 comments

CheckHarry commented Feb 13, 2022

因為這repo應該是最容易搜到的6.828repo.
所以在這裡填一個坑.

使用新的 toolchain 有可能在lab5之後遇上multiple definition 的error. 這是由於 gcc 把 default 的 -fcommon 改成了 -fno-common.

解決方法：在 makefile 中的 CFLAGS 加上 -fcommon

詳見：https://www.linuxquestions.org/questions/programming-9/multiple-definition-errors-when-linking-on-arch-using-gcc-10-1-0-a-4175675444/

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