On 2/12/07, <b class="gmail_sendername">Malcolm Wallace</b> &lt;<a href="mailto:Malcolm.Wallace@cs.york.ac.uk">Malcolm.Wallace@cs.york.ac.uk</a>&gt; wrote:<div><span class="gmail_quote"></span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
(1) &quot;scons install&quot; doesn&#39;t seem to install anything.&nbsp;&nbsp;How do I install<br>&nbsp;&nbsp;&nbsp;&nbsp;yhc to a standard location after building it?</blockquote><div><br>It should print a message about being installed on an unsupported system. Not having a Mac machine to test on, or having any clue about where things should live means I can&#39;t write the installer portion of the build system.
<br></div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">(2) If there is a problem with any of the scons configuration steps<br>&nbsp;&nbsp;&nbsp;&nbsp;(e.g
. libgmp or wrong version of ghc found), then &quot;scons help&quot; does<br>&nbsp;&nbsp;&nbsp;&nbsp;not work at all.&nbsp;&nbsp;I thus had several days of chasing configuration<br>&nbsp;&nbsp;&nbsp;&nbsp;issues before I could even get scons to give me its usage message!
</blockquote><div><br>I&#39;ve fixed this now.&nbsp;</div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">(3) There seems to be no way to tell scons to use a particular version
<br>&nbsp;&nbsp;&nbsp;&nbsp;of ghc to bootstrap with, if I happen to have several installed and<br>&nbsp;&nbsp;&nbsp;&nbsp;want to use a specific one.&nbsp;&nbsp;(This is especially a problem if my<br>&nbsp;&nbsp;&nbsp;&nbsp;default version is too old for yhc, like ghc-6.2.2, but for other<br>
&nbsp;&nbsp;&nbsp;&nbsp;software I don&#39;t want to change the default.)</blockquote><div><br>You can now run scons and add a ghc=&lt;path to ghc&gt; options.<br></div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
(4) There seems to be no way to tell scons to use specific build options<br>&nbsp;&nbsp;&nbsp;&nbsp;e.g. on my powerpc G5, it would be useful to give -mcpu=g5 to all C<br>&nbsp;&nbsp;&nbsp;&nbsp;compilations, so that it will link properly against the 64-bit libgmp
<br>&nbsp;&nbsp;&nbsp;&nbsp;that is installed.&nbsp;&nbsp;I can imagine wanting to give a bunch of options<br>&nbsp;&nbsp;&nbsp;&nbsp;to the haskell compiler we are bootstrapping with too.<br></blockquote></div><br>This has always been supported, but only just documented :-) Yhc picks up the CCFLAGS environment variable. Simply build as:
<br>CCFLAGS=&quot;-mcpu=g5&quot; scons<br><br>It also supports GHCFLAGS and LIBPATH, which pass options to GHC and the linker&#39;s search path respectively.<br><br>Cheers,<br>Andrew<br><br>