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The forthcoming "libvirt" package will need a "nc" command with support for Unix domain sockets in order to permit remote management using the virt-manager utility. netcat-openbsd provides such command but requires glibc, so we would not have remote management on uClibc-based systems. Ncat is a much-improved reimplementation of the venerable Netcat and is compatible with uClibc and musl. It provides features not available in the ancient GNU netcat and its Busybox double like IPv6, proxies, and Unix sockets. Since 'nmap' itself is a fairly big program (~2.3 MB), we want to be able to install only ncat. In addition, nmap requires an external library, pcre. So this commit adds sub-options to selectively enable/disable the different programs part of nmap: nmap, nping, ndiff and ncat. Finally, we symlink 'nc' to ncat if neiter netcat nor netcat-openbsd is selected, even though ncat does not have the same interface as netcat-openbsd. However, since Fedora/RHEL install nmap-ncat as 'nc', it can be assumed that packages that depend on 'nc' know how to deal with this diversity. For example, the virt-manager package does that. Also user-supplied scripts can be assumed to do the right thing, since the user also selects whether nmap-ncat, netcat or netcat-openbsd is installed. Signed-off-by: Carlos Santos <casantos@datacom.ind.br> [Thomas: - don't just handle the ncat case in a special way: create sub-options for all nmap tools, and use <pkg>_MAKE_OPTS and <pkg>_INSTALL_TARGET_OPTS to select which ones should be built/installed.] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at http://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on Freenode IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches