ipv6calc-2.2.0-38.fc32 fails to build in F32 with GCC 10:

make[2]: Leaving directory '/home/test/fedora/ipv6calc/ipv6calc-2.2.0'
gcc -o ipv6logconv ipv6logconv.o ipv6logconvhelp.o  -rdynamic -ldl -lm -lcrypto -Wl,-z,relro -Wl,--as-needed  -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -ldb ../lib/libipv6calc.so.2.2.0 ../databases/lib/libipv6calc_db_wrapper.so.2.2.0 -lcrypto -Wl,-z,relro -Wl,--as-needed  -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -ldb
/usr/bin/ld: ipv6logconvhelp.o:/home/test/fedora/ipv6calc/ipv6calc-2.2.0/ipv6logconv/ipv6logconv.h:24: multiple definition of `cache_lru_limit'; ipv6logconv.o:/home/test/fedora/ipv6calc/ipv6calc-2.2.0/ipv6logconv/ipv6logconv.h:24: first defined here
collect2: error: ld returned 1 exit status
make[1]: *** [Makefile:51: ipv6logconv] Error 1
make[1]: Leaving directory '/home/test/fedora/ipv6calc/ipv6calc-2.2.0/ipv6logconv'