X-Git-Url: https://sipb.mit.edu/gitweb.cgi/ikiwiki.git/blobdiff_plain/ebf414d3d4f5fffb456327b5649c50d5a2de4e90..f4d99ac1ca03121255e545df89e7d841a02cc0bf:/doc/bugs/PREFIX_not_honoured_for_underlaydir.mdwn

diff --git a/doc/bugs/PREFIX_not_honoured_for_underlaydir.mdwn b/doc/bugs/PREFIX_not_honoured_for_underlaydir.mdwn
index fe22df19c..e66cad173 100644
--- a/doc/bugs/PREFIX_not_honoured_for_underlaydir.mdwn
+++ b/doc/bugs/PREFIX_not_honoured_for_underlaydir.mdwn
@@ -26,8 +26,19 @@ it shouldn't try to use /usr/share here.
 	when building the package, to make it install into a temporary
 	directory which gets packaged up.
 
-	It would probably be nice if ikiwiki offered a separate build-time
-	setting to control where it looked for its data files, though it already
-	offers a way to do it at runtime (--underlaydir and --templatedir).
+This is not the case.  That is the difference between PREFIX and DESTDIR.
 
-	--[[Joey]]
+DESTDIR does what you describe; it causes the files to be installed into some
+directory you specify, which may not be the same place you'd eventually
+run it from.
+
+PREFIX means build the software to run under the location given.  Normally it
+will also affect the location files are copied to, so that 'make install'
+installs a working system.
+
+At least, that's the way I've always understood it; the MakeMaker documentation
+isn't entirely clear (perhaps because ordinary Perl modules do not need to be
+configured at build time depending on the installation directory).  It does mention
+that DESTDIR is the thing used by packaging tools.
+
+	Thanks for clarifying that. [[bugs/done]] --[[Joey]]