* [PATCH 1/2] deb-pkg: Add automatic support for armhf architecture
@ 2013-10-06 17:04 Ben Hutchings
2013-10-07 13:38 ` maximilian attems
` (2 more replies)
0 siblings, 3 replies; 6+ messages in thread
From: Ben Hutchings @ 2013-10-06 17:04 UTC (permalink / raw)
To: linux-kbuild; +Cc: maximilian attems, Michal Marek, Fathi Boudra, debian-arm
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The Debian armhf architecture uses the ARM EABI hard-float variant,
whereas armel uses the soft-float variant. Although the kernel
doesn't use FP itself, CONFIG_VFP must be enabled to support
hard-float userland and will probably be disabled when supporting a
soft-float userland. So set the architecture to armhf by default when
CONFIG_AEABI and CONFIG_VFP are both enabled.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
scripts/package/builddeb | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/scripts/package/builddeb b/scripts/package/builddeb
index 90e521f..e14c56e 100644
--- a/scripts/package/builddeb
+++ b/scripts/package/builddeb
@@ -43,7 +43,16 @@ create_package() {
mips*)
debarch=mips$(grep -q CPU_LITTLE_ENDIAN=y $KCONFIG_CONFIG && echo el) ;;
arm*)
- debarch=arm$(grep -q CONFIG_AEABI=y $KCONFIG_CONFIG && echo el) ;;
+ if grep -q CONFIG_AEABI=y $KCONFIG_CONFIG; then
+ if grep -q CONFIG_VFP=y $KCONFIG_CONFIG; then
+ debarch=armhf
+ else
+ debarch=armel
+ fi
+ else
+ debarch=arm
+ fi
+ ;;
*)
echo "" >&2
echo "** ** ** WARNING ** ** **" >&2
--
Ben Hutchings
Who are all these weirdos? - David Bowie, reading IRC for the first time
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^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH 1/2] deb-pkg: Add automatic support for armhf architecture
2013-10-06 17:04 [PATCH 1/2] deb-pkg: Add automatic support for armhf architecture Ben Hutchings
@ 2013-10-07 13:38 ` maximilian attems
2013-10-07 15:01 ` Fathi Boudra
2013-10-08 0:23 ` Hector Oron
2 siblings, 0 replies; 6+ messages in thread
From: maximilian attems @ 2013-10-07 13:38 UTC (permalink / raw)
To: Ben Hutchings; +Cc: linux-kbuild, Michal Marek, Fathi Boudra, debian-arm
On Sun, Oct 06, 2013 at 06:04:01PM +0100, Ben Hutchings wrote:
> The Debian armhf architecture uses the ARM EABI hard-float variant,
> whereas armel uses the soft-float variant. Although the kernel
> doesn't use FP itself, CONFIG_VFP must be enabled to support
> hard-float userland and will probably be disabled when supporting a
> soft-float userland. So set the architecture to armhf by default when
> CONFIG_AEABI and CONFIG_VFP are both enabled.
>
> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Acked-by: maximilian attems <max@stro.at>
> ---
> scripts/package/builddeb | 11 ++++++++++-
> 1 file changed, 10 insertions(+), 1 deletion(-)
>
> diff --git a/scripts/package/builddeb b/scripts/package/builddeb
> index 90e521f..e14c56e 100644
> --- a/scripts/package/builddeb
> +++ b/scripts/package/builddeb
> @@ -43,7 +43,16 @@ create_package() {
> mips*)
> debarch=mips$(grep -q CPU_LITTLE_ENDIAN=y $KCONFIG_CONFIG && echo el) ;;
> arm*)
> - debarch=arm$(grep -q CONFIG_AEABI=y $KCONFIG_CONFIG && echo el) ;;
> + if grep -q CONFIG_AEABI=y $KCONFIG_CONFIG; then
> + if grep -q CONFIG_VFP=y $KCONFIG_CONFIG; then
> + debarch=armhf
> + else
> + debarch=armel
> + fi
> + else
> + debarch=arm
> + fi
> + ;;
> *)
> echo "" >&2
> echo "** ** ** WARNING ** ** **" >&2
>
>
> --
> Ben Hutchings
> Who are all these weirdos? - David Bowie, reading IRC for the first time
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 1/2] deb-pkg: Add automatic support for armhf architecture
2013-10-06 17:04 [PATCH 1/2] deb-pkg: Add automatic support for armhf architecture Ben Hutchings
2013-10-07 13:38 ` maximilian attems
@ 2013-10-07 15:01 ` Fathi Boudra
2013-10-08 0:23 ` Hector Oron
2 siblings, 0 replies; 6+ messages in thread
From: Fathi Boudra @ 2013-10-07 15:01 UTC (permalink / raw)
To: Ben Hutchings; +Cc: linux-kbuild, maximilian attems, Michal Marek, debian-arm
On 6 October 2013 20:04, Ben Hutchings <ben@decadent.org.uk> wrote:
> The Debian armhf architecture uses the ARM EABI hard-float variant,
> whereas armel uses the soft-float variant. Although the kernel
> doesn't use FP itself, CONFIG_VFP must be enabled to support
> hard-float userland and will probably be disabled when supporting a
> soft-float userland. So set the architecture to armhf by default when
> CONFIG_AEABI and CONFIG_VFP are both enabled.
>
> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Acked-by: Fathi Boudra <fathi.boudra@linaro.org>
> ---
> scripts/package/builddeb | 11 ++++++++++-
> 1 file changed, 10 insertions(+), 1 deletion(-)
>
> diff --git a/scripts/package/builddeb b/scripts/package/builddeb
> index 90e521f..e14c56e 100644
> --- a/scripts/package/builddeb
> +++ b/scripts/package/builddeb
> @@ -43,7 +43,16 @@ create_package() {
> mips*)
> debarch=mips$(grep -q CPU_LITTLE_ENDIAN=y $KCONFIG_CONFIG && echo el) ;;
> arm*)
> - debarch=arm$(grep -q CONFIG_AEABI=y $KCONFIG_CONFIG && echo el) ;;
> + if grep -q CONFIG_AEABI=y $KCONFIG_CONFIG; then
> + if grep -q CONFIG_VFP=y $KCONFIG_CONFIG; then
> + debarch=armhf
> + else
> + debarch=armel
> + fi
> + else
> + debarch=arm
> + fi
> + ;;
> *)
> echo "" >&2
> echo "** ** ** WARNING ** ** **" >&2
>
>
> --
> Ben Hutchings
> Who are all these weirdos? - David Bowie, reading IRC for the first time
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 1/2] deb-pkg: Add automatic support for armhf architecture
2013-10-06 17:04 [PATCH 1/2] deb-pkg: Add automatic support for armhf architecture Ben Hutchings
2013-10-07 13:38 ` maximilian attems
2013-10-07 15:01 ` Fathi Boudra
@ 2013-10-08 0:23 ` Hector Oron
2013-10-13 19:59 ` Ben Hutchings
2 siblings, 1 reply; 6+ messages in thread
From: Hector Oron @ 2013-10-08 0:23 UTC (permalink / raw)
To: Ben Hutchings
Cc: linux-kbuild, maximilian attems, Michal Marek, Fathi Boudra, Debian ARM
Hello,
2013/10/6 Ben Hutchings <ben@decadent.org.uk>:
> The Debian armhf architecture uses the ARM EABI hard-float variant,
> whereas armel uses the soft-float variant. Although the kernel
> doesn't use FP itself, CONFIG_VFP must be enabled to support
> hard-float userland and will probably be disabled when supporting a
> soft-float userland. So set the architecture to armhf by default when
> CONFIG_AEABI and CONFIG_VFP are both enabled.
Debian armel userland can be run on any device, so it is suggested to
better rely on toolchain configuration rather than kernel config
symbols.
For arm-gnueabi(hf) toolchain something like:
$ gcc -dumpspecs | grep multilib_defaults -A2 | grep -q soft && echo
"This is armel"
$ gcc -dumpspecs | grep multilib_defaults -A2 | grep -q hard && echo
"This is armhf"
could be checked instead.
Best regards
> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
> ---
> scripts/package/builddeb | 11 ++++++++++-
> 1 file changed, 10 insertions(+), 1 deletion(-)
>
> diff --git a/scripts/package/builddeb b/scripts/package/builddeb
> index 90e521f..e14c56e 100644
> --- a/scripts/package/builddeb
> +++ b/scripts/package/builddeb
> @@ -43,7 +43,16 @@ create_package() {
> mips*)
> debarch=mips$(grep -q CPU_LITTLE_ENDIAN=y $KCONFIG_CONFIG && echo el) ;;
> arm*)
> - debarch=arm$(grep -q CONFIG_AEABI=y $KCONFIG_CONFIG && echo el) ;;
> + if grep -q CONFIG_AEABI=y $KCONFIG_CONFIG; then
> + if grep -q CONFIG_VFP=y $KCONFIG_CONFIG; then
> + debarch=armhf
> + else
> + debarch=armel
> + fi
> + else
> + debarch=arm
> + fi
> + ;;
> *)
> echo "" >&2
> echo "** ** ** WARNING ** ** **" >&2
>
>
> --
> Ben Hutchings
> Who are all these weirdos? - David Bowie, reading IRC for the first time
--
Héctor Orón -.. . -... .. .- -. -.. . ...- . .-.. --- .--. . .-.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 1/2] deb-pkg: Add automatic support for armhf architecture
2013-10-08 0:23 ` Hector Oron
@ 2013-10-13 19:59 ` Ben Hutchings
2013-10-24 10:59 ` Hector Oron
0 siblings, 1 reply; 6+ messages in thread
From: Ben Hutchings @ 2013-10-13 19:59 UTC (permalink / raw)
To: Hector Oron
Cc: linux-kbuild, maximilian attems, Michal Marek, Fathi Boudra, Debian ARM
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On Tue, 2013-10-08 at 02:23 +0200, Hector Oron wrote:
> Hello,
>
> 2013/10/6 Ben Hutchings <ben@decadent.org.uk>:
> > The Debian armhf architecture uses the ARM EABI hard-float variant,
> > whereas armel uses the soft-float variant. Although the kernel
> > doesn't use FP itself, CONFIG_VFP must be enabled to support
> > hard-float userland and will probably be disabled when supporting a
> > soft-float userland. So set the architecture to armhf by default when
> > CONFIG_AEABI and CONFIG_VFP are both enabled.
>
> Debian armel userland can be run on any device, so it is suggested to
> better rely on toolchain configuration rather than kernel config
> symbols.
>
> For arm-gnueabi(hf) toolchain something like:
> $ gcc -dumpspecs | grep multilib_defaults -A2 | grep -q soft && echo
> "This is armel"
> $ gcc -dumpspecs | grep multilib_defaults -A2 | grep -q hard && echo
> "This is armhf"
> could be checked instead.
[...]
Is the output of -dumpspecs really so stable that this is going to be
reliable?
Ben.
--
Ben Hutchings
Beware of bugs in the above code;
I have only proved it correct, not tried it. - Donald Knuth
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 1/2] deb-pkg: Add automatic support for armhf architecture
2013-10-13 19:59 ` Ben Hutchings
@ 2013-10-24 10:59 ` Hector Oron
0 siblings, 0 replies; 6+ messages in thread
From: Hector Oron @ 2013-10-24 10:59 UTC (permalink / raw)
To: Ben Hutchings
Cc: linux-kbuild, maximilian attems, Michal Marek, Fathi Boudra, Debian ARM
Hello,
2013/10/13 Ben Hutchings <ben@decadent.org.uk>:
> On Tue, 2013-10-08 at 02:23 +0200, Hector Oron wrote:
>> Hello,
>>
>> 2013/10/6 Ben Hutchings <ben@decadent.org.uk>:
>> > The Debian armhf architecture uses the ARM EABI hard-float variant,
>> > whereas armel uses the soft-float variant. Although the kernel
>> > doesn't use FP itself, CONFIG_VFP must be enabled to support
>> > hard-float userland and will probably be disabled when supporting a
>> > soft-float userland. So set the architecture to armhf by default when
>> > CONFIG_AEABI and CONFIG_VFP are both enabled.
>>
>> Debian armel userland can be run on any device, so it is suggested to
>> better rely on toolchain configuration rather than kernel config
>> symbols.
>>
>> For arm-gnueabi(hf) toolchain something like:
>> $ gcc -dumpspecs | grep multilib_defaults -A2 | grep -q soft && echo
>> "This is armel"
>> $ gcc -dumpspecs | grep multilib_defaults -A2 | grep -q hard && echo
>> "This is armhf"
>> could be checked instead.
> [...]
>
> Is the output of -dumpspecs really so stable that this is going to be
> reliable?
I am not sure about it... but up to date, I have never found a system
that makes it faulty. I would be interesting to check on other
distributions besides Debian.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2013-10-24 10:59 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2013-10-06 17:04 [PATCH 1/2] deb-pkg: Add automatic support for armhf architecture Ben Hutchings
2013-10-07 13:38 ` maximilian attems
2013-10-07 15:01 ` Fathi Boudra
2013-10-08 0:23 ` Hector Oron
2013-10-13 19:59 ` Ben Hutchings
2013-10-24 10:59 ` Hector Oron
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