Installation from a package¶
Knot DNS may already be included in your operating system distribution and therefore can be installed from packages (Linux), ports (BSD), or via Homebrew (macOS). This is always preferred unless you want to test the latest features, contribute to Knot development, or you know what you are doing.
See the project download page for the latest information.
Installation from source code¶
Required build environment¶
The build process relies on these standard tools:
autoconf >= 2.65
python-sphinx (optional, for documentation building)
GCC >= 4.1 is mandatory for atomic built-ins, but the latest available version is recommended. Another requirement is
_GNU_SOURCE and C99 support, otherwise it adapts to the available compiler features. LLVM clang compiler since version 2.9 can be used as well.
Getting the source code¶
After obtaining the source code, compilation and installation is quite a straightforward process using autotools.
Configuring and generating Makefiles¶
If compiling from git source, you need to bootstrap the
./configure file first:
$ autoreconf -i -f
In most cases, you can just run configure without any options:
For all available configure options run:
$ ./configure --help
./configure you can compile Knot DNS by running
make command, which will produce binaries and other related files:
The compilation with enabled optimizations may take a long time. In such a case the
--disable-fastparser configure option can help.
When you have finished building Knot DNS, it’s time to install the binaries and configuration files into the operation system hierarchy. You can do so by executing:
$ make install
When installing as a non-root user, you might have to gain elevated privileges by switching to root user, e.g.
sudo make install or
su -c 'make install'.