Sometimes when ASan support is wanted for fwknop, the following compile
error can be generated. This script provides a means to solve this.
fwknop-spa_comm.o: In function `send_spa_packet_http':
/home/mbr/git/fwknop.git/client/spa_comm.c:516: undefined reference to `rpl_malloc'
../lib/.libs/libfko.so: undefined reference to `rpl_realloc'