On 2/12/07, Malcolm Wallace
(1) "scons install" doesn't seem to install anything. How do I install yhc to a standard location after building it?
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't write the installer portion of the build system. (2) If there is a problem with any of the scons configuration steps
(e.g. libgmp or wrong version of ghc found), then "scons help" does not work at all. I thus had several days of chasing configuration issues before I could even get scons to give me its usage message!
I've fixed this now. (3) There seems to be no way to tell scons to use a particular version
of ghc to bootstrap with, if I happen to have several installed and want to use a specific one. (This is especially a problem if my default version is too old for yhc, like ghc-6.2.2, but for other software I don't want to change the default.)
You can now run scons and add a ghc=<path to ghc> options. (4) There seems to be no way to tell scons to use specific build options
e.g. on my powerpc G5, it would be useful to give -mcpu=g5 to all C compilations, so that it will link properly against the 64-bit libgmp that is installed. I can imagine wanting to give a bunch of options to the haskell compiler we are bootstrapping with too.
This has always been supported, but only just documented :-) Yhc picks up the CCFLAGS environment variable. Simply build as: CCFLAGS="-mcpu=g5" scons It also supports GHCFLAGS and LIBPATH, which pass options to GHC and the linker's search path respectively. Cheers, Andrew