带有 2 个目标和 if 语句的 makefile，为什么会出错？

Question

Makefile:

ab: if [ -fs ];then echo aaa fi

command:make b

if [ -fs ];then /bin/sh: -c: line 1: syntax error: unexpected end of file make: *** [b] Error 2

Could anyone tell me why?

Answer 1

You should not be mixing shell scripting and make scripting. Try the below

a b:
        @if test -f s; then \
             echo "aaa";\
        fi