For openSUSE Factory ARM run the following as root:
zypper addrepo https://download.opensuse.org/repositories/devel:tools:compiler/openSUSE_Factory_ARM/devel:tools:compiler.repo
zypper refresh
zypper install libc++1
For openSUSE Factory run the following as root:
zypper addrepo https://download.opensuse.org/repositories/devel:tools:compiler/openSUSE_Factory/devel:tools:compiler.repo
zypper refresh
zypper install libc++1
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/devel:tools:compiler/15.6/devel:tools:compiler.repo
zypper refresh
zypper install libc++1
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/devel:tools:compiler/15.5/devel:tools:compiler.repo
zypper refresh
zypper install libc++1