pcap.h: No such file or directory

This error message typically appears when a C or C++ program is unable to find the pcap.h header file. This file is typically used for packet capture and network analysis applications.

To resolve this error, make sure that the libpcap development package is installed on your system. You can typically install it using your system's package manager, such as apt or yum.

Once you have installed the libpcap development package, make sure that your program is properly configured to include the pcap.h header file. This may involve modifying your program's makefile or build script.

If you are still experiencing issues, try searching online for additional troubleshooting steps or consult the documentation for the programming language or library that you are using.