bug#43232: jack2 fails to build on aarch64

[Andreas Enge]

The error message is:
[228/274] Compiling example-clients/simdtests.cpp
...
[243/274] Linking build/example-clients/jack_simdtests
...
ld: example-clients/simdtests.cpp.28.o: undefined reference to symbol 
'__gxx_personality_v0@@CXXABI_1.3'
ld: 
/gnu/store/9xmlrmk7vnlzwq5049500r9lrcf6ikqq-gcc-7.5.0-lib/lib/libstdc++.so.6: 
error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
...
Waf: Leaving directory `/tmp/guix-build-jack2-1.9.13.drv-0/jack2-1.9.13/build'
Build failed
 -> task in 'jack_simdtests' failed with exit status 1 (run with -v to display 
more information)
command "python" "waf" "build" failed with status 1

Following the advice and running "python waf build -v", the executed gcc
command is printed:
Build failed
 -> task in 'jack_simdtests' failed with exit status 1: 
        {task 281472893294736: cprogram simdtests.cpp.28.o -> jack_simdtests}
['/gnu/store/ap7hgyv4rjqmhg4a6cb6cypsh3g1f5q4-gcc-7.5.0/bin/gcc', 
'-Wl,-rpath=/gnu/store/bwmp037cg6gfz31j9q441j800mvk7wva-jack2-1.9.13/lib', 
'example-clients/simdtests.cpp.28.o', 
'-o/tmp/guix-build-jack2-1.9.13.drv-0/jack2-1.9.13/build/example-clients/jack_simdtests',
 '-Wl,-Bstatic', '-Wl,-Bdynamic', '-Lcommon', 
'-L/gnu/store/zwrg5jwyj1222vyjdpmppijzhz04sqid-opus-1.3.1/lib', 
'-L/gnu/store/mpm43myhw7difa8p3a9xnag3zb6pnn4b-dbus-1.12.16/lib', '-ljack', 
'-lpthread', '-lopus', '-ldb', '-lrt', '-ldl', '-ldbus-1', '-lm']

Andreas