This appears similar to the build errors in https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=761193.
Those were initially addressed by disabling exception handling on armhf (https://anonscm.debian.org/viewvc/pkg-llvm/libcxx/trunk/debian/patches/disable-arm-excep-handling.diff) and later with a patch that supposedly implements exception handling on armhf (https://anonscm.debian.org/viewvc/pkg-llvm/libcxx/trunk/debian/patches/libcxxabi-arm-ehabi-fix.patch, not forwarded upstream).
This appears similar to the build errors in https:/ /bugs.debian. org/cgi- bin/bugreport. cgi?bug= 761193.
Those were initially addressed by disabling exception handling on armhf (https:/ /anonscm. debian. org/viewvc/ pkg-llvm/ libcxx/ trunk/debian/ patches/ disable- arm-excep- handling. diff) and later with a patch that supposedly implements exception handling on armhf (https:/ /anonscm. debian. org/viewvc/ pkg-llvm/ libcxx/ trunk/debian/ patches/ libcxxabi- arm-ehabi- fix.patch, not forwarded upstream).