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Subject: bug#57109: arm-none-eabi-toolchain atomic support is broken
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The atomic supports for this toolchain is broken:
A minimal test case:
guix shell arm-none-eabi-toolchain -- \
bash -c "echo '#include <stdatomic.h>' \
| arm-none-eabi-gcc -x c -o /dev/null -c -"
Something similar found online:
https://sourceware.org/legacy-ml/newlib/2017/msg00150.html
However no solution.
This happens with all versions of the arm-none-eabi-toolchain
packages.
=E2=80=94
Jean-Pierre De Jesus DIAZ
Content-Disposition: inline Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Mailer: MIME-tools 5.505 (Entity 5.505) Content-Type: text/plain; charset=utf-8 X-Loop: help-debbugs@HIDDEN From: help-debbugs@HIDDEN (GNU bug Tracking System) To: Jean Pierre De Jesus DIAZ <me@HIDDEN> Subject: bug#57109: Acknowledgement (arm-none-eabi-toolchain atomic support is broken) Message-ID: <handler.57109.B.166013011214005.ack <at> debbugs.gnu.org> References: <FxrTtbkN-kgBnsg2G8jk10dUAf5LGSIhQQKxosEukaNtGlCbHPCXA3HyNf6hzdYYe-qIRF6DlER0-Ma2XjMmzN8GDcwYPNP-5LylnDLavcY=@jeandudey.tech> X-Gnu-PR-Message: ack 57109 X-Gnu-PR-Package: guix Reply-To: 57109 <at> debbugs.gnu.org Date: Wed, 10 Aug 2022 11:16:02 +0000 Thank you for filing a new bug report with debbugs.gnu.org. This is an automatically generated reply to let you know your message has been received. Your message is being forwarded to the package maintainers and other interested parties for their attention; they will reply in due course. Your message has been sent to the package maintainer(s): bug-guix@HIDDEN If you wish to submit further information on this problem, please send it to 57109 <at> debbugs.gnu.org. Please do not send mail to help-debbugs@HIDDEN unless you wish to report a problem with the Bug-tracking system. --=20 57109: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D57109 GNU Bug Tracking System Contact help-debbugs@HIDDEN with problems
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Subject: bug#57109: arm-none-eabi-toolchain atomic support is broken
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The following works though. No newlib or anything:
guix shell --expression=3D'((@ (gnu packages cross-base) cross-gcc) "arm-no=
ne-eabi")' -- \
bash -c "echo '#include <stdatomic.h>' \
| arm-none-eabi-gcc -x c -o /dev/null -c -"
=E2=80=94
Jean-Pierre De Jesus DIAZ
------- Original Message -------
On Wednesday, August 10th, 2022 at 1:14 PM, Jean Pierre De Jesus DIAZ <me@j=
eandudey.tech> wrote:
> The atomic supports for this toolchain is broken:
>=20
> A minimal test case:
>=20
> guix shell arm-none-eabi-toolchain -- \
> bash -c "echo '#include <stdatomic.h>' \
>=20
> | arm-none-eabi-gcc -x c -o /dev/null -c -"
>=20
> Something similar found online:
>=20
> https://sourceware.org/legacy-ml/newlib/2017/msg00150.html
>=20
> However no solution.
>=20
> This happens with all versions of the arm-none-eabi-toolchain
> packages.
>=20
> =E2=80=94
> Jean-Pierre De Jesus DIAZ
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Subject: bug#57109: arm-none-eabi-toolchain atomic support is broken
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Jean Pierre De Jesus DIAZ via Bug reports for GNU Guix <bug-guix@HIDDEN> w=
rites:
> The following works though. No newlib or anything:
>
> guix shell --expression=3D'((@ (gnu packages cross-base) cross-gcc) "arm-=
none-eabi")' -- \
> bash -c "echo '#include <stdatomic.h>' \
> | arm-none-eabi-gcc -x c -o /dev/null -c -"
>
>
> =E2=80=94
> Jean-Pierre De Jesus DIAZ
>
>
> ------- Original Message -------
> On Wednesday, August 10th, 2022 at 1:14 PM, Jean Pierre De Jesus DIAZ <me=
@jeandudey.tech> wrote:
>
>
>> The atomic supports for this toolchain is broken:
>>=20
>> A minimal test case:
>>=20
>> guix shell arm-none-eabi-toolchain -- \
>> bash -c "echo '#include <stdatomic.h>' \
>>=20
>> | arm-none-eabi-gcc -x c -o /dev/null -c -"
>>=20
>> Something similar found online:
>>=20
>> https://sourceware.org/legacy-ml/newlib/2017/msg00150.html
>>=20
>> However no solution.
>>=20
>> This happens with all versions of the arm-none-eabi-toolchain
>> packages.
>>=20
>> =E2=80=94
>> Jean-Pierre De Jesus DIAZ
Might be a good idea to add a (regression) test for this in advance.
Wish I could help, but my expermientation with cross compilation with
Guix were largely fruitless.
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Jean Pierre De Jesus DIAZ via Bug reports for GNU Guix <bug-guix@HIDDEN> w=
rites:
> The following works though. No newlib or anything:
>
> guix shell --expression=3D'((@ (gnu packages cross-base) cross-gcc) "arm-=
none-eabi")' -- \
> bash -c "echo '#include <stdatomic.h>' \
> | arm-none-eabi-gcc -x c -o /dev/null -c -"
>
>
> =E2=80=94
> Jean-Pierre De Jesus DIAZ
>
>
> ------- Original Message -------
> On Wednesday, August 10th, 2022 at 1:14 PM, Jean Pierre De Jesus DIAZ <me=
@jeandudey.tech> wrote:
>
>
>> The atomic supports for this toolchain is broken:
>>=20
>> A minimal test case:
>>=20
>> guix shell arm-none-eabi-toolchain -- \
>> bash -c "echo '#include <stdatomic.h>' \
>>=20
>> | arm-none-eabi-gcc -x c -o /dev/null -c -"
>>=20
>> Something similar found online:
>>=20
>> https://sourceware.org/legacy-ml/newlib/2017/msg00150.html
>>=20
>> However no solution.
>>=20
>> This happens with all versions of the arm-none-eabi-toolchain
>> packages.
>>=20
>> =E2=80=94
>> Jean-Pierre De Jesus DIAZ
Might be a good idea to add a (regression) test for this in advance.
Wish I could help, but my expermientation with cross compilation with
Guix were largely fruitless.
X-Loop: help-debbugs@HIDDEN
Subject: bug#57109: arm-none-eabi-toolchain atomic support is broken
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> Jean Pierre De Jesus DIAZ via Bug reports for GNU Guix <bug-guix@HIDDEN>=
writes:
>=20
> > The following works though. No newlib or anything:
> >
> > guix shell --expression=3D'((@ (gnu packages cross-base) cross-gcc) "ar=
m-none-eabi")' -- \
> > bash -c "echo '#include <stdatomic.h>' \
> > | arm-none-eabi-gcc -x c -o /dev/null -c -"
> >
> >
> > =C3=A2=C2=80=C2=94
> > Jean-Pierre De Jesus DIAZ
> >
The reason this works is that the stdatomic.h is used from gcc itself,
instead of the stdatomic.h coming from newlib. It works even with the
arm-none-eabi gcc's coming from `gnu packages embedded`.
The newlib one seems to be broken, though I am unable to find any
discussion on newlib's part. I've tried toolchain coming from
developer.arm.com directly (through nixpkgs that packages the binaries)
and found out that they use stdatomic.h coming from gcc even in full toolch=
ain.
The problem in the Guix ones is that since those use
CROSS_C_INCLUDE_PATH. The paths here get priority to the ones coming from g=
cc
itself. This then means the newlib stdatomic.h shadows the one coming
from (arm-none-eabi-)gcc:lib.
The toolchain from developer.arm.com does not have this issue, since it
relies on the paths directly from gcc, having the one with newlib as
last. When I try directly including stdatomic.h from newlib, I also
get this error even with that toolchain.
A solution could be to prepend the include path from gcc:lib into the
CROSS_C_INCLUDE_PATH to make it take priority, and prefer the packages
coming from there, or to stop relying on the env vars.
See the toolchain from Nix, the one not using env vars:
```
#include <...> search starts here:
/nix/store/v9njly0h3i308dgyxzcqb6lqf71q8mkl-gcc-arm-embedded-12.3.rel1/bin=
/../lib/gcc/arm-none-eabi/12.3.1/include
/nix/store/v9njly0h3i308dgyxzcqb6lqf71q8mkl-gcc-arm-embedded-12.3.rel1/bin=
/../lib/gcc/arm-none-eabi/12.3.1/include-fixed
/nix/store/v9njly0h3i308dgyxzcqb6lqf71q8mkl-gcc-arm-embedded-12.3.rel1/bin=
/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/include
```
See Guix one:
```
#include <...> search starts here:
/gnu/store/h5jxagsf8236ff3lbfcd4yk1qhk2bs4p-profile/arm-none-eabi/include
/gnu/store/pjc5ysriqs6w99ihkza7xgwm8clfpgp0-gcc-cross-sans-libc-arm-none-e=
abi-7-2018-q2-update-1.261907-lib/lib/gcc/arm-none-eabi/7.3.1/include
/gnu/store/pjc5ysriqs6w99ihkza7xgwm8clfpgp0-gcc-cross-sans-libc-arm-none-e=
abi-7-2018-q2-update-1.261907-lib/lib/gcc/arm-none-eabi/7.3.1/include-fixed
```
Regards,
Rutherther
GNU bug tracking system
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