vpath中的V代表什么？

Question

makefile中的VPATH变量用于指示搜索路径。但是其中的"V“到底代表什么呢？

make变量VPATH的值指定了应该搜索的目录列表。大多数情况下，期望目录包含不在当前目录中的先决条件文件；但是，请将VPATH用作规则的先决条件和目标的搜索列表。

Answer 1

VPATH似乎是：虚拟路径

我找到了关于：制作的链接

它定义VPATH如下：

>**Virtual Path - VPATH & vpath**

>You can use VPATH (uppercase) to specify the directory to search for dependencies and target files. For example,

># Search for dependencies and targets from "src" and "include" directories
># The directories are separated by space

VPATH = src

>You can also use vpath (lowercase) to be more precise about the file type and its search directory. For example,

># Search for .c files in "src" directory; .h files in "include" directory
># The pattern matching character '%' matches filename without the extension
>vpath %.c src
>vpath %.h include

此第二环节确认：

VPATH代表虚拟路径