Re: Bug#1121969: python3.14: Please build with -O1 on m68k to workaround interpretor lockups

Hi,

On 12/5/25 12:45, John Paul Adrian Glaubitz wrote:
> Source: python3.14
> Version: 3.14.0-5
> Severity: normal
> Tags: patch
> User: [email protected]
> Usertags: m68k
> X-Debbugs-Cc: [email protected]
> 
> 
> Hi,
> 
> the Python interpretor currently locks up on m68k during build when building
> with gcc-15. This can be worked around by building the interpretor with -O1.
> 
> Please apply the following patch as a workaround for the lockups:
> 
> --- debian/rules.orig   2025-12-05 11:44:21.571871726 +0100
> +++ debian/rules        2025-12-05 11:44:13.347825637 +0100
> @@ -203,6 +203,11 @@
>       DEBUG_CFLAGS += -fexceptions
>   endif
>   
> +ifneq (,$(filter $(DEB_HOST_ARCH), m68k))
> +    OPT_CFLAGS += $(filter-out -O%,$(DPKG_CFLAGS)) -O1
> +    OPT_PIE_CFLAGS += $(filter-out -O%,$(DPKG_PIE_CFLAGS)) -O1
> +endif
> +

Add also GCC version >=15 check to arch check?

(To avoid perf regression on older compilers.)


	- Eero

>   ifeq ($(DEB_HOST_GNU_TYPE),$(DEB_BUILD_GNU_TYPE))
>     ifeq ($(DEB_HOST_ARCH_OS),linux)
>       ifneq (,$(findstring $(DEB_HOST_ARCH), amd64 armel armhf arm64 i386 powerpc ppc64 ppc64el s390x))
> 
> I will try to figure out which optimization flags causes these lockups.
> 
> Thanks,
> Adrian
> 
> --
>   .''`.  John Paul Adrian Glaubitz
> : :' :  Debian Developer
> `. `'   Physicist
>    `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913