Replace Building BIND 9 section in README with reference to ARM

diff --git a/README.md b/README.md
index 760171172e2142057a505e8125c3e9921d442a69..564ae059dfa730e207451b35295fd91ff2596e2f 100644 (file)
--- a/README.md
+++ b/README.md
@@ -18,9 +18,6 @@ information regarding copyright ownership.
 1. [Reporting bugs and getting help](#help)
 1. [Contributing to BIND](#contrib)
 1. [Building BIND](#build)
-1. [macOS](#macos)
-1. [Dependencies](#dependencies)
-1. [Compile-time options](#opts)
 1. [Automated testing](#testing)
 1. [Documentation](#doc)
 1. [Change log](#changes)
@@ -127,142 +124,9 @@ including your patch as an attachment, preferably generated by
 
 ### <a name="build"/> Building BIND 9
 
-At a minimum, BIND requires a Unix or Linux system with an ANSI C compiler,
-basic POSIX support, and a 64-bit integer type. BIND also requires the
-`libuv` asynchronous I/O library, the `nghttp2` HTTP/2 library, the
-`jemalloc` memory allocation library, and the OpenSSL cryptography
-library.  On Linux, BIND requires the `libcap` library to set process
-privileges, though this requirement can be overridden by disabling
-capability support at compile time. See [Compile-time options](#opts)
-below for details on other libraries that may be required to support
-optional features.
-
-Successful builds have been observed on many versions of Linux and Unix,
-including RHEL/CentOS/Oracle Linux, Fedora, Debian, Ubuntu, SLES, openSUSE,
-Slackware, Alpine, FreeBSD, NetBSD, OpenBSD, macOS, Solaris, OpenIndiana,
-OmniOS CE, HP-UX, and OpenWRT.
-
-To build on a Unix or Linux system, use:
-
-               $ autoreconf -fi (if you are building in the git repository)
-               $ ./configure
-               $ make
-
-If you're using Emacs, you might find `make tags` helpful.
-
-Several environment variables, which can be set before running `configure`,
-affect compilation.  Significant ones are:
-
-|Variable|Description |
-|--------------------|-----------------------------------------------|
-|`CC`|The C compiler to use.  `configure` tries to figure out the right one for supported systems.|
-|`CFLAGS`|C compiler flags.  Defaults to include -g and/or -O2 as supported by the compiler.  Please include '-g' if you need to set `CFLAGS`. |
-|`LDFLAGS`|Linker flags. Defaults to empty string.|
-
-Additional environment variables affecting the build are listed at the
-end of the `configure` help text, which can be obtained by running the
-command:
-
-    $ ./configure --help
-
-#### <a name="macos"> macOS
-
-Building on macOS assumes that the "Command Tools for Xcode" are installed.
-These can be downloaded from
-[https://developer.apple.com/download/more/](https://developer.apple.com/download/more/)
-or, if you have Xcode already installed, you can run `xcode-select --install`.
-(Note that an Apple ID may be required to access the download page.)
-
-#### <a name="dependencies"> Dependencies
-
-To build BIND you need to have the following packages installed:
-
-    libuv
-    pkg-config / pkgconfig / pkgconf
-
-To build BIND from the git repository, you need the following tools
-installed:
-
-    autoconf (includes autoreconf)
-    automake
-    libtool
-
-#### <a name="opts"/> Compile-time options
-
-To see a full list of configuration options, run `configure --help`.
-
-For the server to support DNSSEC, you need to build it with crypto support.
-To use OpenSSL, you must have OpenSSL 1.0.2e or newer installed. If the
-OpenSSL library is installed in a nonstandard location, specify the prefix
-using `--with-openssl=<PREFIX>` on the configure command line. To use a
-PKCS#11 hardware service module for cryptographic operations, it will
-be necessary to compile and use engine_pkcs11 from the OpenSC project.
-
-To support DNS over HTTPS, the server must be linked with `libnghttp2`.
-
-To support the HTTP statistics channel, the server must be linked with at
-least one of the following libraries: `libxml2`
-[http://xmlsoft.org](http://xmlsoft.org) or `json-c`
-[https://github.com/json-c/json-c](https://github.com/json-c/json-c).
-If these are installed at a nonstandard location, then:
-
-* for `libxml2`, specify the prefix using `--with-libxml2=/prefix`.
-* for `json-c`, adjust `PKG_CONFIG_PATH`.
-
-To support compression on the HTTP statistics channel, the server must be
-linked against `libzlib`. If this is installed in a nonstandard location,
-specify the prefix using `--with-zlib=/prefix`.
-
-To support storing configuration data for runtime-added zones in an LMDB
-database, the server must be linked with `liblmdb`. If this is installed in a
-nonstandard location, specify the prefix using `with-lmdb=/prefix`.
-
-To support MaxMind GeoIP2 location-based ACLs, the server must be linked
-with `libmaxminddb`. This is turned on by default if the library is
-found; if the library is installed in a nonstandard location,
-specify the prefix using `--with-maxminddb=/prefix`. GeoIP2 support
-can be switched off with `--disable-geoip`.
-
-For DNSTAP packet logging, you must have installed `libfstrm`
-[https://github.com/farsightsec/fstrm](https://github.com/farsightsec/fstrm)
-and `libprotobuf-c`
-[https://developers.google.com/protocol-buffers](https://developers.google.com/protocol-buffers),
-and BIND must be configured with `--enable-dnstap`.
-
-Certain compiled-in constants and default settings can be decreased to
-values better suited to small machines, e.g. OpenWRT boxes, by specifying
-`--with-tuning=small` on the `configure` command line. This decreases
-memory usage by using smaller structures, but degrades performance.
-
-On Linux, process capabilities are managed in user space using
-the `libcap` library, which can be installed on most Linux systems via
-the `libcap-dev` or `libcap-devel` package. Process capability support can
-also be disabled by configuring with `--disable-linux-caps`.
-
-On some platforms it is necessary to explicitly request large file support
-to handle files bigger than 2GB.  This can be done by using
-`--enable-largefile` on the `configure` command line.
-
-Support for the "fixed" rrset-order option can be enabled or disabled by
-specifying `--enable-fixed-rrset` or `--disable-fixed-rrset` on the
-configure command line. By default, fixed rrset-order is disabled to
-reduce memory footprint.
-
-The `--enable-querytrace` option causes `named` to log every step of
-processing every query. The `--enable-singletrace` option turns on the
-same verbose tracing, but allows an individual query to be separately
-traced by setting its query ID to 0. These options should only be enabled
-when debugging, because they have a significant negative impact on query
-performance.
-
-`make install` installs `named` and the various BIND 9 libraries. By
-default, installation is into /usr/local, but this can be changed with the
-`--prefix` option when running `configure`.
-
-You may specify the option `--sysconfdir` to set the directory where
-configuration files like `named.conf` go by default, and `--localstatedir`
-to set the default parent directory of `run/named.pid`. `--sysconfdir`
-defaults to `$prefix/etc` and `--localstatedir` defaults to `$prefix/var`.
+For information about building BIND 9, see the
+["Building BIND 9"](doc/arm/build.rst) section in the BIND 9
+Administrator Reference Manual.
 
 ### <a name="testing"/> Automated testing