[newlib-cygwin] Cygwin: FAQ: Mention configure options to build with reduced dependencies

[Jon Turney]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=87968453dda533a21a4a8dccd2c573cd16c40695

commit 87968453dda533a21a4a8dccd2c573cd16c40695
Author: Jon Turney <jon.turney@dronecode.org.uk>
Date:   Tue Dec 13 22:22:20 2022 +0000

    Cygwin: FAQ: Mention configure options to build with reduced dependencies

Diff:
---
 winsup/doc/faq-programming.xml | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/winsup/doc/faq-programming.xml b/winsup/doc/faq-programming.xml
index 632d1a173..a24b781cf 100644
--- a/winsup/doc/faq-programming.xml
+++ b/winsup/doc/faq-programming.xml
@@ -679,14 +679,21 @@ rewriting the runtime library in question from specs...
 installed; you at least need <literal>gcc-g++</literal>,
 <literal>make</literal>, <literal>automake</literal>,
 <literal>autoconf</literal>, <literal>git</literal>, <literal>perl</literal>,
+<literal>cocom</literal> and <literal>patch</literal>.
+</para>
+
+<para>
+Additionally, building the <code>dumper</code> utility requires
 <literal>gettext-devel</literal>, <literal>libiconv-devel</literal>
-<literal>zlib-devel</literal>, <literal>cocom</literal> and <literal>patch</literal>.
+<literal>zlib-devel</literal>.
 </para>
 
 <para>
-Building for 64-bit Cygwin also requires
-<literal>mingw64-x86_64-gcc-g++</literal> and
-<literal>mingw64-x86_64-zlib</literal>.
+Building those Cygwin utilities which are not themselves Cygwin programs
+(e.g. <code>cygcheck</code> and <code>strace</code>) also requires
+<literal>mingw64-x86_64-gcc-g++</literal> and <literal>mingw64-x86_64-zlib</literal>.
+Building these programs can be disabled with the <literal>--without-cross-bootstrap</literal>
+option to <literal>configure</literal>.
 </para>
 
 <!-- If you want to run the tests, <literal>dejagnu</literal> is also required. -->