On Tue, Apr 17, 2007 at 12:10:48PM +0100, Claus Reinke wrote:

after a long while, i'm trying to update and rebuild my local ghc HEAD (windows). as usual, there are problems:

2. filepath has been added sometime after my last attempt

Good point - boot now checks that all the corelibs are here.

3. windows configure has acquired yet another extra option, it seems. why can't i just run ./configure and have it find the right things in the PATH, as on other platforms? the only supported build is mingw, so it should look for mingw versions, and issue a warning if cygwin versions are found instead (a warning because some people do want cygwin builds).

A patch to simplify the Windows story would be great, but it's fairly low priority for me as (a) it does actually work at the moment (b) removing one or two configure flags doesn't really make much difference; copy and pasting 3 or 4 is just as easy as 1 or 2, so you really do have to solve all the issues to get a payoff.

4. make falls over in ALUT (i don't have OpenAL installed, so neither that nor ALUT should be built). last part of log appended below.

Right, I've been fixing up the various exciting new failure modes that have popped up now that we use Cabal to build the libraries. However, I think that trying to detect that this latest one is going to happen before configure runs is one step too far. There are 9 packages that depend on other extralibs: ALUT (OpenGL, OpenAL) GLUT (OpenGL) HGL (X11) (should sometimes depend on Win32 instead?) OpenAL (OpenGL) cgi (network, parsec, mtl, xhtml) fgl (mtl) network (parsec) regex-compat (regex-base, regex-posix) regex-posix (regex-base) but I think only the GL/AL family, HGL and X11 can decide that they are unbuildable, so I think that only these can fail in this way: ALUT (OpenGL, OpenAL) GLUT (OpenGL) HGL (X11) (should sometimes depend on Win32 instead?) OpenAL (OpenGL) I see 3 possible solutions: 1) If Cabal find the dependencies aren't satisfied then it puts "buildable: False" somewhere and exits successfully. I quite like this from a consistency point of view (it's what happens when ./configure decides that the package is unbuildable). 2) We remove ALUT, GLUT, HGL, OpenAL (and OpenGL too for consistency?) from extralibs. I think these are probably among the least use extralibs anyway. 3) We declare that if you put unbuildable extralibs in your GHC tree then the build might break. My order of preference is: 1) (done by someone else) 2) (also removing OpenGL) 2) (leaving OpenGL as an extralib) 3) 1) (done by me) Anyone else got an opinion (or a Cabal patch? :-) ) Thanks Ian