Makefile中执行的命令以横杠-开头是什么意思

Question

比如下面这个Makefile中的-rm-rf

.PHONY: run clean
EXENAME = main

run:
    make -C src/ all
    ./main

clean:
    make -C src/ clean
    -rm -rf $(EXENAME) 

Answer 1

忽略 rm 命令执行的退出状态。

What do @, - and + do as prefixes to recipe lines in Make?