Re: [Buildroot] [PATCH 1/1] package/apcupsd: set LD to TARGET_CXX

["Yann E. MORIN" <yann.morin.1998@free.fr>]

Fabrice, All,

James, question for you, below...

On 2024-01-13 11:06 +0100, Fabrice Fontaine spake thusly:
> As found out by Yann E. Morin in [1], apcupsd configure script is ugly,
> and uses gcc to do the link line-wrapping which will raise the following
> build failure with gcc 13:
> 
> /home/buildroot/autobuild/instance-1/output-1/host/opt/ext-toolchain/bin/../lib/gcc/powerpc64le-buildroot-linux-gnu/13.2.0/../../../../powerpc64le-buildroot-linux-gnu/bin/ld: /home/buildroot/autobuild/instance-1/output-1/host/opt/ext-toolchain/bin/../lib/gcc/powerpc64le-buildroot-linux-gnu/13.2.0/../../../../powerpc64le-buildroot-linux-gnu/lib/../lib64/libsupc++.a(eh_alloc.o): in function `std::basic_string_view<char, std::char_traits<char> >::compare(unsigned long, unsigned long, char const*, unsigned long) const':
> eh_alloc.cc:(.text._ZNKSt17basic_string_viewIcSt11char_traitsIcEE7compareEmmPKcm[_ZNKSt17basic_string_viewIcSt11char_traitsIcEE7compareEmmPKcm]+0x44): undefined reference to `std::__throw_out_of_range_fmt(char const*, ...)'
> 
> It will also raise the following build failure on sparc/arc:
> 
> /home/autobuild/autobuild/instance-3/output-1/host/opt/ext-toolchain/bin/../lib/gcc/arceb-snps-linux-uclibc/9.2.1/../../../../arceb-snps-linux-uclibc/bin/ld: /home/autobuild/autobuild/instance-3/output-1/host/arceb-buildroot-linux-uclibc/sysroot/lib/libsupc++.a(eh_throw.o): in function `__exchange_and_add_dispatch':
> /SCRATCH/arcjenkins2/slaves/ru20-custom-arcgnu2/workspace/arcoss_verification/arc_gnu_toolchain_release/arc_gnu_toolchain_release/bd-uclibceb/gcc-stage2/arceb-snps-linux-uclibc/libstdc++-v3/include/ext/atomicity.h:82: undefined reference to `__gnu_cxx::__exchange_and_add(int volatile*, int)'
> /home/autobuild/autobuild/instance-3/output-1/host/opt/ext-toolchain/bin/../lib/gcc/arceb-snps-linux-uclibc/9.2.1/../../../../arceb-snps-linux-uclibc/bin/ld: /SCRATCH/arcjenkins2/slaves/ru20-custom-arcgnu2/workspace/arcoss_verification/arc_gnu_toolchain_release/arc_gnu_toolchain_release/bd-uclibceb/gcc-stage2/arceb-snps-linux-uclibc/libstdc++-v3/include/ext/atomicity.h:82: undefined reference to `__gnu_cxx::__exchange_and_add(int volatile*, int)'
> 
> Instead of trying to patch the configure script as advocated by
> Yann E. Morin, set LD to TARGET_CXX as:
>  - this solution is quicker
>  - usptream is dead (last release in 2016)

Last release was 3.14.14. Too bad they did not do 3.14.15.. ;-)

Seriously, though: is apcupsd still needed, when we have nut that
handles a large number of UPSes:
    https://networkupstools.org/ddl/APC/

James, as you were the one to introduce apcupsd: what does apcupsd do
that nut does not provide for?

>  - this solution has already been used in other packages (nodejs, zmqpp)
> 
> [1]: https://patchwork.ozlabs.org/project/buildroot/patch/20200812171821.2517-1-Evgeniy.Didin@synopsys.com/
> 
> Fixes:
>  - http://autobuild.buildroot.org/results/6096c3ddc5edf3204635c2c90246c2e8c8e074e7
>  - http://autobuild.buildroot.org/results/d8a/d8a3ab31c5b86871c7e1117f4ffa7b6cedfcb7e0/build-end.log
> 
> Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>

Applied to master, thanks.

> ---
>  package/apcupsd/apcupsd.mk | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/package/apcupsd/apcupsd.mk b/package/apcupsd/apcupsd.mk
> index 80ed0b0832..97e6d6a558 100644
> --- a/package/apcupsd/apcupsd.mk
> +++ b/package/apcupsd/apcupsd.mk
> @@ -71,8 +71,8 @@ APCUPSD_CONF_OPTS += --disable-usb
>  endif
>  
>  define APCUPSD_BUILD_CMDS
> -	$(TARGET_MAKE_ENV) $(MAKE) -C $(@D)/src
> -	$(TARGET_MAKE_ENV) $(MAKE) -C $(@D)/platforms
> +	$(TARGET_MAKE_ENV) $(MAKE) LD="$(TARGET_CXX)" -C $(@D)/src
> +	$(TARGET_MAKE_ENV) $(MAKE) LD="$(TARGET_CXX)" -C $(@D)/platforms
>  endef
>  
>  define APCUPSD_INSTALL_TARGET_CMDS
> -- 
> 2.43.0
> 
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