The last fails, snippet below:
Checking that xsltproc can make man pages... (cached) yes
Checking for QtNetwork... (cached) no
Altered configuration variables:
qt = False (default True): build QT bindings
Part of the website build requires asciidoc, not installed.
scons: done reading SConscript files.
scons: Building targets ...
scons: *** [www] Source `www/installation.html' not found, needed by target `www'.
scons: building terminated because of errors.
The reason is clear to me, after scrolling up and reading the scons run a few times, but the error is misleading. www/installation.html is not a source file, it the output of:
env.Command("www/installation.html",
"INSTALL",
["asciidoc -o www/installation.html INSTALL"])
I understand the error now, it is the www/ target that fails, but I still contend that there must be a better way to signal this.