Re: VPATH and variable expansion

[Sam Ravnborg]

On Sun, May 17, 2009 at 07:27:07PM +0200, Werner LEMBERG wrote:
> 
> [make 3.81]
> 
> It seems that no variable expansion in VPATH is allowed.  Trying
> something like
> 
>   VPATH = `pwd`/foo
> 
> doesn't work for me (the directory `foo' actually exists within the
> current directory).  Using `:=' instead of `=' doesn't help either.

makefile syntax is not the same as shell syntax.
backticks does not work in makefiles as you expect them to.

To do what you want use:

    VPATH = $(shell pwd)/foo


Note - you can use backticks in commands like this:

all:
        echo `pwd`

Because the command is executed by your shell.

        Sam