Re: [Buildroot] Year 2038 time util issue - Build failure in 2024.02.x

[Thomas Petazzoni via buildroot <buildroot@buildroot.org>]

Hello Murali,

On Wed, 17 Jul 2024 18:18:35 +0000
"Karicheri, Murali via buildroot" <buildroot@buildroot.org> wrote:

> We were using buildroot version 2023.08 version and encountered a
> year 2038 crash when using time/date utilities. So, my research found
> some work done in the recent version of buildroot. Where
> BR2_TIME_BITS_64=y was added to build with 64bit time field. My board
> is based on a STM32MP133c SoC and using an external project to build
> buildroot. So, I have migrated our project to using 2024.02.x version
> of buildroot and enabled BR2_TIME_BITS_64=y to get the fix for the
> 2038 issue. But my build fails with the logs below.

Sorry to hear that your build fails with Buildroot 2024.02.x. See below
some details.

> 
> Could you help me answer the following questions?

> 1. Is the Y2038 time issue resolved in buildroot? If not, is there
> some work, though officially not supported,  I can investigate for a
> potential solution

Things are not as black and white as "Is the Y2038 time issue
resolved". How 64-bit time_t is handled depends on the C library, and
also different packages might exhibit different problems. So it's not
like we can absolutely guarantee that everything is fixed.

> 2. If it is in fact resolved and expected to work in 2024.02.x, what
> I might be missing? Is there specific version of the toolchain
> packages I need to select in the Toolchain configuration and other
> packages?

We expect things to work, but we have lots of packages.

> libtool: compile:  /src/linux-bsp-stm32mp133c/output/development/build/host-gcc-final-12.3.0/build/./gcc/xgcc -shared-libgcc -B/src/linux-bsp-stm32mp133c/output/development/build/host-gcc-final-12.3.0/build/./gcc -nostdinc++ -L/src/linux-bsp-stm32mp133c/output/development/build/host-gcc-final-12.3.0/build/arm-buildroot-linux-gnueabihf/libstdc++-v3/src -L/src/linux-bsp-stm32mp133c/output/development/build/host-gcc-final-12.3.0/build/arm-buildroot-linux-gnueabihf/libstdc++-v3/src/.libs -L/src/linux-bsp-stm32mp133c/output/development/build/host-gcc-final-12.3.0/build/arm-buildroot-linux-gnueabihf/libstdc++-v3/libsupc++/.libs -B/src/linux-bsp-stm32mp133c/output/development/host/arm-buildroot-linux-gnueabihf/bin/ -B/src/linux-bsp-stm32mp133c/output/development/host/arm-buildroot-linux-gnueabihf/lib/ -isystem /src/linux-bsp-stm32mp133c/output/development/host/arm-buildroot-linux-gnueabihf/include -isystem /src/linux-bsp-stm32mp133c/output/development/host/arm-buildroot-linux-gnueabihf/sy
 s-
>  include -D_GNU_SOURCE -D_DEBUG -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -DHAVE_RPC_XDR_H=0 -DHAVE_TIRPC_RPC_XDR_H=0 -I. -I../../../../libsanitizer/sanitizer_common -I.. -I ../../../../libsanitizer/include -I ../../../../libsanitizer -isystem ../../../../libsanitizer/include/system -Wall -W -Wno-unused-parameter -Wwrite-strings -pedantic -Wno-long-long -fPIC -fno-builtin -fno-exceptions -fno-rtti -fomit-frame-pointer -funwind-tables -fvisibility=hidden -Wno-variadic-macros -I../../libstdc++-v3/include -I../../libstdc++-v3/include/arm-buildroot-linux-gnueabihf -I../../../../libsanitizer/../libstdc++-v3/libsupc++ -std=gnu++14 -DSANITIZER_LIBBACKTRACE -DSANITIZER_CP_DEMANGLE -I ../../../../libsanitizer/../libbacktrace -I ../libbacktrace -I ../../../../libsanitizer/../include -include ../../../../libsanitizer/libbacktrace/backtrace-rename.h -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_TIME_BITS=64 -Og -g2 -D_GNU_SOURCE -MT sanitizer_p
 ro
>  cmaps_common.lo -MD -MP -MF .deps/sanitizer_procmaps_common.Tpo -c ../../../../libsanitizer/sanitizer_common/sanitizer_procmaps_common.cpp -o sanitizer_procmaps_common.o >/dev/null 2>&1
> mv -f .deps/sanitizer_linux_libcdep.Tpo .deps/sanitizer_linux_libcdep.Plo
> mv -f .deps/sanitizer_procmaps_linux.Tpo .deps/sanitizer_procmaps_linux.Plo
> mv -f .deps/sanitizer_linux.Tpo .deps/sanitizer_linux.Plo
> mv -f .deps/sanitizer_printf.Tpo .deps/sanitizer_printf.Plo
> mv -f .deps/sanitizer_posix.Tpo .deps/sanitizer_posix.Plo
> mv -f .deps/sanitizer_procmaps_common.Tpo .deps/sanitizer_procmaps_common.Plo
> mv -f .deps/sanitizer_posix_libcdep.Tpo .deps/sanitizer_posix_libcdep.Plo
> make[6]: *** [Makefile:533: all-recursive] Error 1
> make[5]: *** [Makefile:420: all] Error 2
> make[4]: *** [Makefile:13138: all-target-libsanitizer] Error 2
> make[3]: *** [Makefile:1033: all] Error 2
> make[2]: *** [package/pkg-generic.mk:283: /src/linux-bsp-stm32mp133c/output/development/build/host-gcc-final-12.3.0/.stamp_built] Error 2
> make[1]: *** [Makefile:82: _all] Error 2
> make: *** [Makefile:106: /src/linux-bsp-stm32mp133c/output/development/host/bin/arm-none-linux-gnueabihf-gcc] Error 2

This error log is unfortunately useless, as you didn't copy/paste
enough of the build log to have the actual error. All we can see from
this is that the compilation failed during the host-gcc-final step.

Please provide:

 1. A Buildroot .config file that allows to reproduce the issue with
    upstream Buildroot (without any custom changes)

 2. The full build log, preferably posted on some pastebin site, as the
    mailing list will not accept a mail that contains a full build log.

Best regards,

Thomas
-- 
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
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