make:commands commence before first target

简介: makefile时常遇到这样的问题,汇总网上的原因如下: 1. 上一行换行符号 \ 后面有空格 2. 本行前面的空白有非法字符 1)Makefile可能是以命令行开始:以[Tab]字符开始,但不是一个合法的命令行(例如,一个变量的赋值)。

makefile时常遇到这样的问题,汇总网上的原因如下:

1. 上一行换行符号 \ 后面有空格

2. 本行前面的空白有非法字符

1Makefile可能是以命令行开始:以[Tab]字符开始,但不是一个合法的命令行(例如,一个变量的赋值)。命令行必须和规则一一对应。

2)第二种原因可能是一行的第一个非空字符为分号,make会认为此处遗漏了规则的“target: prerequisite”部分。

原文:

http://blog.csdn.net/cstarbl/article/details/7702246

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