Re: Bug in make?

[Igor Pechtchanski <pechtcha at cs dot nyu dot edu>]

On Wed, 6 Aug 2003, Robert Mecklenburg wrote:

> Has anyone seen this problem before?  The following makefile:
>
> ================================================================
>
> SHELL := /bin/bash
>
> # Remove the blank line to make it work...
> define f
>
>   @echo hi
> endef
>
> a:
>         $(f)
>
> ================================================================
>
> Generates the error:
>
> make
>
>   @echo hi
> /bin/bash: line 1: @echo: command not found
> make: *** [a] Error 127
>
> Either deleting the blank line in the define or changing the shell
> from bash fixes the problem.  I searched the archives but I had
> trouble coming up with a useful search pattern.
>
> I'm about to build make and dive in, but I thought I'd ask first...
> Cygcheck output attached.
>
> Thanks,

Robert,

FYI, any shell (I tried /bin/sh, /bin/tcsh, etc) tries to execute '@echo',
with the obvious result.  However, changing the shell to '/bin/bash -x'
might prove instructive.

It seems the blank line (anywhere in the sequence) confuses the define
processor in make and makes it forgo the processing of the prefix
characters after the blank line.  This could well be a bug in make.  I'll
take a look at the make source later to see whether there's something
obvious.
	Igor
-- 
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