Sorry, that link did not explain the -D_USE_TIME_BITS=64 flag. I was sure I had read official docs of this somewhere but now I can only find https://sourceware.org/glibc/wiki/Y2038ProofnessDesign#Detailed_implementation
/Ola On Tue, Nov 08 2022, Ola x Nilsson wrote: > As far as I can tell from glibc's documentation, this is how you are > supposed to do it. glibc chose to always support both 32 and 64 bit > APIs for time and file offset and make the normal int size the default. > musl chose to switch to 64bit altogether. > > https://www.gnu.org/software/libc/manual/html_node/64_002dbit-time-symbol-handling.html > > /Ola > > On Tue, Nov 08 2022, Alexander Kanavin wrote: > >> I suppose what I want to say is - perhaps this should be discussed >> with upstreams first? Things should 'just work' without having to set >> some magic flags in an external configuration. >> >> Alex >> >> On Tue, 8 Nov 2022 at 13:18, Alexander Kanavin via >> lists.openembedded.org <alex.kanavin=gmail....@lists.openembedded.org> >> wrote: >>> >>> Is this a recommendation somewhere official? >>> >>> Alex >>> >>> On Tue 8. Nov 2022 at 13.04, Niko Mauno <niko.ma...@vaisala.com> wrote: >>>> >>>> My understanding wrt. Y2038 and 32-bit glibc hosts was such that it >>>> makes sense to set said compiler flags globally to ensure user space >>>> wide Y2038 compliance. So I encountered this compiler error while >>>> building poky reference images with additional effective >>>> >>>> TARGET_CPPFLAGS += "-D_TIME_BITS=64 -D_FILE_OFFSET_BITS=64" >>>> >>>> declaration in meta/conf/distro/include/tclibc-glibc.inc. >>>> >>>> -Niko >>>> >>>> On 8.11.2022 13.50, Alexander Kanavin wrote: >>>> > So you need to set -D_TIME_BITS=64 >>>> > -D_FILE_OFFSET_BITS=64 to get some error? But why set that, shouldn’t >>>> > the defaults work? >>>> > >>>> > Alex >>>> > >>>> > On Tue 8. Nov 2022 at 12.48, Niko Mauno <niko.ma...@vaisala.com >>>> > <mailto:niko.ma...@vaisala.com>> wrote: >>>> > >>>> > I have not studied the issue, but in order to reproduce this error I >>>> > add >>>> > 'MACHINE = "qemuarm"' to local.conf then issue 'bitbake kbd' against >>>> > current master while TARGET_CPPFLAGS value is set to "-D_TIME_BITS=64 >>>> > -D_FILE_OFFSET_BITS=64". >>>> > >>>> > -Niko >>>> > >>>> > On 8.11.2022 11.14, Alexander Kanavin wrote: >>>> > > We do build for 32 bit arm targets, so is this seen only in >>>> > specific >>>> > > circumstances? What are they? >>>> > > >>>> > > Alex >>>> > > >>>> > > On Tue, 8 Nov 2022 at 01:09, Niko Mauno via >>>> > lists.openembedded.org >>>> > <http://lists.openembedded.org/ >>>> > > <niko.mauno=vaisala....@lists.openembedded.org >>>> > <mailto:vaisala....@lists.openembedded.org>> wrote: >>>> > >> >>>> > >> For now add exemption in order to avoid following failure during >>>> > >> do_compile() >>>> > >> >>>> > >> | >>>> > >>>> > .../build/tmp/work/cortexa15t2hf-neon-poky-linux-gnueabi/kbd/2.5.1-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/12.2.0/ld:.libs/libtswrap.ver:2: >>>> > syntax error in VERSION script >>>> > >> | collect2: error: ld returned 1 exit status >>>> > >> >>>> > >> Signed-off-by: Niko Mauno <niko.ma...@vaisala.com >>>> > <mailto:niko.ma...@vaisala.com>> >>>> > >> --- >>>> > >> meta/recipes-core/kbd/kbd_2.5.1.bb >>>> > <http://kbd_2.5.1.bb/ >>>> > >> 1 file changed, 3 insertions(+) >>>> > >> >>>> > >> diff --git a/meta/recipes-core/kbd/kbd_2.5.1.bb >>>> > <http://kbd_2.5.1.bb/ >>>> > >> index aa3ab6e121..b623aecd36 100644 >>>> > >> --- a/meta/recipes-core/kbd/kbd_2.5.1.bb >>>> > <http://kbd_2.5.1.bb/ >>>> > >> +++ b/meta/recipes-core/kbd/kbd_2.5.1.bb >>>> > <http://kbd_2.5.1.bb/ >>>> > >> @@ -18,6 +18,9 @@ SRC_URI = >>>> > "${KERNELORG_MIRROR}/linux/utils/${BPN}/${BP}.tar.xz \ >>>> > >> >>>> > >> SRC_URI[sha256sum] = >>>> > "ccdf452387a6380973d2927363e9cbb939fa2068915a6f937ff9d24522024683" >>>> > >> >>>> > >> +# Compiling 64 bit time for 32 bit host is broken >>>> > >> +GLIBC_64BIT_TIME_CPPFLAGS = "" >>>> > >> + >>>> > >> PACKAGECONFIG ?= "${@bb.utils.filter('DISTRO_FEATURES', 'pam', >>>> > d)} \ >>>> > >> " >>>> > >> >>>> > >> -- >>>> > >> 2.36.1 >>>> > >> >>>> > >> >>>> > >> >>>> > >> >>>> > >>> >>> >>> >>> >> [4. ATT00001.txt --- text/plain; ATT00001.txt]...
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