Hi Andrew,

> On 11 Jun 2020, at 17:24, Andrew Cooper <[email protected]> wrote:
> 
> On 11/06/2020 12:54, Bertrand Marquis wrote:
>> Use $(BASEDIR)/include instead of $(XEN_ROOT)/xen/include for the
>> include path to be coherent with the rest of the Makefiles.
>> 
>> Signed-off-by: Bertrand Marquis <[email protected]>
> 
> Does something subtle break before this change?

Without changing anything no.
But if xen sub-directory is renamed yes.

As there is no easy way to build xen hypervisor out of tree (I might be wrong 
here !) I found a solution using cp -rs from xen subdir in a xen-build1 
xen-build2 etc this way I can check build for x86 and arm without cleaning.

Without the patch, the sources are actually compiles with an include path 
containing xen/../xen as a result of using XEN_ROOT which does not allow to 
rename xen subdirectory.
As it was the only place in which XEN_ROOT was used for include paths, this is 
normalising the paths.

Bertrand

> 
> ~Andrew
> 
>> ---
>> xen/arch/x86/boot/build32.mk | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>> 
>> diff --git a/xen/arch/x86/boot/build32.mk b/xen/arch/x86/boot/build32.mk
>> index 5851ebff5f..8cd5403926 100644
>> --- a/xen/arch/x86/boot/build32.mk
>> +++ b/xen/arch/x86/boot/build32.mk
>> @@ -5,7 +5,7 @@ include $(XEN_ROOT)/Config.mk
>> $(call cc-options-add,CFLAGS,CC,$(EMBEDDED_EXTRA_CFLAGS))
>> 
>> CFLAGS += -Werror -fno-builtin -g0 -msoft-float
>> -CFLAGS += -I$(XEN_ROOT)/xen/include
>> +CFLAGS += -I$(BASEDIR)/include
>> CFLAGS := $(filter-out -flto,$(CFLAGS)) 
>> 
>> # NB. awk invocation is a portable alternative to 'head -n -1'
> 


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