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Re: [PATCH] Fix C compatibility issue in mini-os
- To: Florian Weimer <fweimer@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Fri, 15 Dec 2023 13:02:26 +0100
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- Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Fri, 15 Dec 2023 12:02:37 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 15.12.2023 12:59, Florian Weimer wrote:
> The cc-option check always fails (that, it picks the second option
> unconditionally) if the compiler does not support implicit conversion
> from integers to pointers. Just drop the initialization because it
> seems unnecessary in this context.
Did you pay attention to ...
> --- a/Config.mk
> +++ b/Config.mk
> @@ -21,7 +21,7 @@ endef
> # of which would indicate an "unrecognized command-line option"
> warning/error.
... the comment the tail of which is visible here?
Jan
> #
> # Usage: cflags-y += $(call cc-option,$(CC),-march=winchip-c6,-march=i586)
> -cc-option = $(shell if test -z "`echo 'void*p=1;' | \
> +cc-option = $(shell if test -z "`echo 'void*p;' | \
> $(1) $(2) -c -o /dev/null -x c - 2>&1 | grep -- $(2) -`"; \
> then echo "$(2)"; else echo "$(3)"; fi ;)
>
>
>
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