Update man page to explictly point to overview.txt.

In overview.txt, document usage of the populate script.

1 files changed, 29 insertions, 0 deletions

diff --git a/docs/overview.txt b/docs/overview.txt
index a35d995..f49988d 100644
--- a/docs/overview.txt
+++ b/docs/overview.txt
@@ -206,6 +206,35 @@ Testing all toolchains at once |
 You can test-build all samples; simply call:
   ct-ng regtest
 
+_______________________
+                      /
+Using the toolchain  /
+____________________/
+
+Using the toolchain is as simple as adding the toolchain's bin directory in
+your PATH, such as:
+  export PATH="${PATH}:/your/toolchain/path/bin"
+
+and then using the target triplet to tell the build systems to use your
+toolchain:
+  ./configure --target=your-target-triplet
+  make CC=your-target-triplet-gcc
+  make CROSS_COMPILE=your-target-triplet-
+  and so on...
+
+When your root directory is ready, it is still missing some important bits: the
+toolchain's libraries. To populate your root directory with those libs, just
+run:
+  your-target-triplet-populate -s /your/root -d /your/root-populated
+
+This will copy /your/root into /your/root-populated, and put the needed and only
+the needed libraries there. Thus you don't polute /your/root with any cruft that
+would no longer be needed should you have to remove stuff. /your/root always
+contains only those things you install in it.
+
+You can then use /your/root-populated to build up your file system image, a
+tarball, or to NFS-mount it from your target, or whatever you need.
+
 ___________________
                   /
 Toolchain types  /