[Bug 271087] devel/libunwind: on arm depends on symbol __aeabi_uidiv, which is not found

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=271087

            Bug ID: 271087
           Summary: devel/libunwind: on arm depends on symbol
                    __aeabi_uidiv, which is not found
           Product: Ports & Packages
           Version: Latest
          Hardware: arm
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: Individual Port(s)
          Assignee: sunpoet@FreeBSD.org
          Reporter: fuz@FreeBSD.org
          Assignee: sunpoet@FreeBSD.org
             Flags: maintainer-feedback?(sunpoet@FreeBSD.org)

Various programs depending on libunwind fail to build/run on armv6/armv7 due to
the symbol __aeabi_uidiv not found.  For example, various Ruby ports fail like
this:

-- Ruby level backtrace information ----------------------------------------
extconf.rb:700:in `<main>'
extconf.rb:294:in `ensure_package_configuration'
extconf.rb:287:in `have_package_configuration'
extconf.rb:258:in `try_package_configuration'
/usr/local/lib/ruby/3.1/mkmf.rb:988:in `checking_for'
/usr/local/lib/ruby/3.1/mkmf.rb:350:in `postpone'
/usr/local/lib/ruby/3.1/mkmf.rb:324:in `open'
/usr/local/lib/ruby/3.1/mkmf.rb:354:in `block in postpone'
/usr/local/lib/ruby/3.1/mkmf.rb:324:in `open'
/usr/local/lib/ruby/3.1/mkmf.rb:354:in `block (2 levels) in postpone'
/usr/local/lib/ruby/3.1/mkmf.rb:989:in `block in checking_for'
extconf.rb:259:in `block in try_package_configuration'
/usr/local/lib/ruby/gems/3.1/gems/pkg-config-1.5.1/lib/pkg-config.rb:659:in
`have_package'
/usr/local/lib/ruby/gems/3.1/gems/pkg-config-1.5.1/lib/pkg-config.rb:607:in
`cflags_only_other'
/usr/local/lib/ruby/gems/3.1/gems/pkg-config-1.5.1/lib/pkg-config.rb:302:in
`cflags_only_other'
/usr/local/lib/ruby/gems/3.1/gems/pkg-config-1.5.1/lib/pkg-config.rb:399:in
`collect_cflags'
/usr/local/lib/ruby/gems/3.1/gems/pkg-config-1.5.1/lib/pkg-config.rb:434:in
`normalize_cflags'
/usr/local/lib/ruby/gems/3.1/gems/pkg-config-1.5.1/lib/pkg-config.rb:434:in
`loop'
/usr/local/lib/ruby/gems/3.1/gems/pkg-config-1.5.1/lib/pkg-config.rb:435:in
`block in normalize_cflags'
/usr/local/lib/ruby/gems/3.1/gems/pkg-config-1.5.1/lib/pkg-config.rb:435:in
`next'

-- C level backtrace information -------------------------------------------
ld-elf.so.1: /usr/local/lib/libunwind.so.8: Undefined symbol "__aeabi_uidiv"

It is unclear for me what the specific problem is, where this symbol is needed
and why there is a linking problem.

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