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This is version 0.20 of the Glorious Glasgow Haskell compilation
system (GHC).
Version 0.20 is an "internal" release, intended *ONLY* for the most
fanatical GHC hackers.
* Many things about it may be broken, though it
does compile and run most programs.
* I/O and ccall scheme re-done; any such low-level code probably needs
fixing; I/O attempts to follow 1.3 I/O proposal. All ccall
arguments and results are automagically "boxed".
* PrimOps fiddled; any code that uses them directly will probably need
attention.
* We've renamed some things, so as to move to a we-don't-steal-user-
name-space policy. Thus "tagCmp" has become "_tagCmp". Names starting
with underscores are now cool if -fglasgow-exts.
You might want to see our "state-interface" document if you mess
with all this low-level/non-standard stuff; I'll try to remember to
put a copy up for FTP.
* No promises about profiling.
* Documentation is untouched since 0.19.
Version 0.19 was the last public release. It has held up pretty well
and should be available wherever you got 0.20 from. I commend 0.19 to
all sane people.
Configuring 0.20 is a little different than 0.19:
% cd <very-top>
% ./configure --with-boot=c
% ./STARTUP-ghc std
% cd ghc; make
Things to note:
* It's wrong for jmake to tell you "0: unknown flag -traditional"; but
it is harmless.
* The 0.20 compiler seems more likely to run out of stack; use
-Rmax-stksize2m (or something) to increase; within the distribution,
probably something like...
% make EXTRA_HC_OPTS="-H20m -Rmax-stksize4m"
See the "configure" script if you want to know what other options are
-- there is no other documentation at this time!
Will Partain, AQUA project typist
partain@dcs.glasgow.ac.uk
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