fix autoconf error : possibly undefined macro: AC_SEARCH_LIBS
configure.ac:109: error: possibly undefined macro: AC_SEARCH_LIBS If this token and others are legitimate, please use m4_pattern_allow. See the Autoconf documentation. autoreconf: /usr/local/bin/autoconf failed with exit status: 1 autoreconf failed solution sudo apt install libtool notes, all below should be installed autoconf automake m4 libtool libevent perl pkg-config