[Buildroot] S390 Buildroot/gcc build issue
Thomas Petazzoni via buildroot <[email protected]>
| Newsgroups | net.busybox.buildroot |
|---|---|
| Message-ID | <ansJ5dXXblvYeMLB@windsurf> |
Alexander,
I am contacting you regarding a build issue I'm seeing with the S390
architecture in Buildroot.
With the following defconfig:
BR2_s390x=y
BR2_KERNEL_HEADERS_6_12=y
BR2_PACKAGE_GLIBC_KERNEL_COMPAT=y
BR2_BINUTILS_VERSION_2_46_X=y
BR2_BINUTILS_GPROFNG=y
BR2_GCC_VERSION_16_X=y
BR2_TOOLCHAIN_BUILDROOT_CXX=y
BR2_TOOLCHAIN_BUILDROOT_FORTRAN=y
BR2_GCC_ENABLE_OPENMP=y
BR2_PACKAGE_HOST_GDB=y
BR2_PACKAGE_HOST_GDB_TUI=y
BR2_PACKAGE_HOST_GDB_PYTHON3=y
BR2_GDB_VERSION_17=y
BR2_GNU_MIRROR="https://mirrors.kernel.org/gnu/"
BR2_PACKAGE_GDB=y
gcc 16.2.0 fails to build with:
../../../libgcc/config/s390/_dpd_sd_to_hf.c:27:25: error: decimal floating-point not supported for this target
27 | HFtype __dpd_truncsdhf (_Decimal32);
| ^~~~~~~~~~
../../../libgcc/config/s390/_dpd_sd_to_hf.c:31:16: error: decimal floating-point not supported for this target
31 | force_convert (_Decimal32 x)
| ^~~~~~~~~~
../../../libgcc/config/s390/_dpd_hf_to_td.c:34:1: error: decimal floating-point not supported for this target
34 | _Decimal128
| ^~~~~~~~~~~
../../../libgcc/config/s390/_dpd_sd_to_hf.c:35:18: error: decimal floating-point not supported for this target
35 | __dpd_truncsdhf (_Decimal32 x)
| ^~~~~~~~~~
I haven't checked whether this is new with gcc 16.x or not, and I'm
not familiar with floating point support on S390.
Are you familiar with this issue?
I see the same issue with gcc 16.1.0 in the autobuilders:
https://autobuild.buildroot.net/results/f88/f88565af0f653df831a7fa43d2507d167fdb9d36/build-end.log
But I don't seem to see any issue with gcc 15.x, so my guess is that
this is a new issue with gcc 16.x.
Any idea?
Thanks a lot!
Thomas
--
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
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