Re: [Xen-devel] how to disable build of pv-shim?

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Mon, May 13, 2019 at 05:20:05PM +0200, Roger Pau Monné wrote:
> On Mon, May 13, 2019 at 04:53:21PM +0200, Olaf Hering wrote:
> > What is the recommended way to disable CONFIG_PV_SHIM, which is set in
> > tools/firmware/Makefile? From my understanding there is no way to influence
> > its value from outside, which means the build always enters xen-dir/.
> 
> I think the following should do the trick.
> 
> Let me know if that works for you and I will submit it formally.
> 
> Thanks!
> 
> ---8<---
> diff --git a/config/Tools.mk.in b/config/Tools.mk.in
> index 98245f63c9..84ddb1a542 100644
> --- a/config/Tools.mk.in
> +++ b/config/Tools.mk.in
> @@ -75,3 +75,5 @@ TINFO_LIBS          := @TINFO_LIBS@
>  ARGP_LDFLAGS        := @argp_ldflags@
>  
>  FILE_OFFSET_BITS    := @FILE_OFFSET_BITS@
> +
> +CONFIG_PV_SHIM      := @pvshim@
> diff --git a/tools/configure.ac b/tools/configure.ac
> index c9fd69ddfa..8df2fd604b 100644
> --- a/tools/configure.ac
> +++ b/tools/configure.ac
> @@ -492,4 +492,15 @@ AC_ARG_ENABLE([9pfs],
>  
>  AC_SUBST(ninepfs)
>  
> +AC_ARG_ENABLE([pvshim],
> +    AS_HELP_STRING([--disable-pvshim], [Disable pvshim build (x86 only, 
> enabled by default)]),
> +    [AS_IF([test "x$enable_pvshim" = "xno"], [pvshim=n], [pvshim=y])], [
> +    case "$host_cpu" in
> +        i[[3456]]86|x86_64)
> +           pvshim="y";;

Since xen doesn't build on 32bit anymore you may want to exclude
i[3456]86 here?

Wei.

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