Use the curses library instead of the termcap library, for
text-mode terminal operations.
+`--with-debuginfod'
+ Build GDB with libdebuginfod, the debuginfod client library. Used
+ to automatically fetch source files and separate debug files from
+ debuginfod servers using the associated executable's build ID.
+ Enabled by default if libdebuginfod is installed and found at
+ configure time. debuginfod is packaged with elfutils, starting
+ with version 0.178. You can get the latest version from
+ 'https://sourceware.org/elfutils/'.
+
`--with-libunwind-ia64'
Use the libunwind library for unwinding function call stack on ia64
target platforms.