libmicrohttpd from security:OpenVAS:UNSTABLE:v5 project
Select Your Operating System
Add repository and install manually
For ScientificLinux 6 run the following as root:
cd /etc/yum.repos.d/ wget https://download.opensuse.org/repositories/security:OpenVAS:UNSTABLE:v5/ScientificLinux_6/security:OpenVAS:UNSTABLE:v5.repo yum install libmicrohttpd