Remove pre-built iPXE image from the repo

Change-Id: If48823aceb2d61319ef08d72a21c7449618e8c47

doc/source/host-cloud/prepare.rst

@@ -1,6 +1,20 @@
 Preparing the Host Cloud Environment
 ====================================
 
+#. Build or download an ipxe-boot image for the baremetal instances.
+
+   #. To download a pre-built image::
+
+       wget https://repos.fedorapeople.org/repos/openstack-m/ovb/ipxe-boot.qcow2
+
+   #. To build the image, run the following from the root of the OVB repo::
+
+       make -C ipxe
+
+      To install the required build dependencies on a Fedora system::
+
+       sudo dnf install -y make gcc perl xz-devel genisoimage qemu-img
+
 #. Source an rc file that will provide admin credentials for the host cloud.
 
 #. Upload an ipxe-boot image for the baremetal instances::

ipxe/.gitignore

@@ -0,0 +1,2 @@
+ipxe-boot.img
+ipxe-boot.qcow2

ipxe/Makefile

@@ -9,6 +9,8 @@ ipxe-boot.qcow2: ipxe-boot.img
 	qemu-img convert -f raw -O qcow2 $< $@
 
 # We disable -Werror so we can build older commits with newer gcc
+# Don't use parallel make, as this races to initialise config headers in a
+# clean repo.
 $(IPXE_IMG):
 	$(MAKE) -C ipxe/src NO_WERROR=1 EMBED=../../script.ipxe bin/ipxe.iso
 

ipxe/README

@@ -3,3 +3,15 @@ IPXE image-building tools
 
 This directory contains tools for for building an IPXE image. Run ``make`` to
 build the image. It is provided as both raw and qcow2.
+
+The iPXE image has minimal build dependencies. On a Fedora system, these are:
+
+* make
+* gcc
+* perl
+* xz-devel
+* genisoimage
+* qemu-img
+
+Please ping Ben Nemec <openstack@nemebean.com> when making a change which
+affects the ipxe image to update the public repo of pre-built images.