| Message ID | 1381079041.2788.25.camel@deadeye.wl.decadent.org.uk (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
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 $KCONFIG_CONFIG; then > + debarch=armhf > + else > + debarch=armel > + fi > + else > + debarch=arm > + fi > + ;; > *) > echo "" >&2 > echo "** ** ** WARNING ** ** **" >&2 > > > -- > Ben Hutchings > Who are all these weirdos? - David Bowie, reading IRC for the first time -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 6 October 2013 20:04, Ben Hutchings <ben@decadent.org.uk> wrote: > The Debian armhf architecture uses the ARM EABI hard-float variant, > whereas armel uses the soft-float variant. Although the kernel > doesn't use FP itself, CONFIG_VFP must be enabled to support > hard-float userland and will probably be disabled when supporting a > soft-float userland. So set the architecture to armhf by default when > CONFIG_AEABI and CONFIG_VFP are both enabled. > > Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Acked-by: Fathi Boudra <fathi.boudra@linaro.org> > --- > scripts/package/builddeb | 11 ++++++++++- > 1 file changed, 10 insertions(+), 1 deletion(-) > > diff --git a/scripts/package/builddeb b/scripts/package/builddeb > index 90e521f..e14c56e 100644 > --- a/scripts/package/builddeb > +++ b/scripts/package/builddeb > @@ -43,7 +43,16 @@ create_package() { > mips*) > debarch=mips$(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 -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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
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.
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. -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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
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(-)