I was about to install gaim-encryption-2.38 from source
on my Debian sarge system, running Gaim 1.5.1 (Debian
configure told me at the end that I need to specify the
whereabouts of the nspr headers.
configure: error: You need to specify
(where "dir" is the location of
the NSPR headers like prio.h)
I had forgotten to look if the headers were installed.
They weren't, so I installed them, deleted the
configure.log and ran configure again. I got the same
message, even though the NSPR headers were obviously
found. Reading the output of configure revealed that it
was actually mozilla-nss whose headers were not found.
I suggest to a) rephrase the warning along the lines of
"Check, if the headers $n are installed. If they are,
you will need to specify --with-$n-includes="dir" (...)
and b) use a separate error message for NSS to make
sure that inexperienced users (i.e. non-programmers)
who want/need to compile gaim-encryption themselves,
easily find what the problem is.