[PATCH boot-wrapper-aarch64] configure: Fix for --with-initrd=no

[Mark Rutland]

On Wed, Dec 17, 2014 at 02:30:55AM +0000, Qiang Huang wrote:
> Our configure.ac script wasn't handle --with-initrd=no, when this was passed,
> we got error:

The parameter to --with-initrd should be the name of the initrd to use;
"yes" or "no" are not valid parameters. I note that the help text is
misleading in this regard, it should probably be fixed up to say
something like "Specify an initrd to use". 

While it's unlikely that someone will have an initrd called "no", this
issue can only occur with incorrect usage of the bootwrapper configure
script. I'd happily accept a patch fixing up the help text, though.

Thanks,
Mark.

> ...
> aarch64-linux-gnu-ld -o linux-system.axf --script=model.lds
> aarch64-linux-gnu-ld: cannot find no
> make: *** [linux-system.axf] Error 1
> 
> Fix this by adding a line to check this.
> And this also fixed --without-initrd.
> 
> Signed-off-by: Qiang Huang <h.huangqiang at huawei.com>
> Cc: Geoff Levand <geoff at infradead.org>
> ---
>  configure.ac | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/configure.ac b/configure.ac
> index 929da13..553013b 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -58,6 +58,7 @@ AC_SUBST([CPU_IDS], [$C_CPU_IDS])
>  AC_ARG_WITH([initrd],
>  	AS_HELP_STRING([--with-initrd], [embed an initrd in the kernel image]),
>  	USE_INITRD=$withval)
> +AS_IF([test "x$USE_INITRD" = "xno"], [USE_INITRD=], [])
>  AC_SUBST([FILESYSTEM], [$USE_INITRD])
>  AM_CONDITIONAL([INITRD], [test "x$USE_INITRD" != "x"])
> 
> -- 
> 
> 
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