How to fetch and build the sources (both for i386 and amd64)
Installing and using the newly baked compiler
How to save on edit — compile — run time
Getting rid of -ffull-laziness (also called -fmake-my-program-leak)
Adding a test to the testsuite
Looking into #8488
(optionally) Fixing the bug that we found
We will use github.com/nilcons/ceh to provide as the stage 0 GHC compiler.
So just follow github.com/nilcons/ceh/blob/master/README.compile-ghc-with-ceh
git clone http://git.haskell.org/ghc src
cd src
./sync-all get
/opt/ceh/scripts/ghc-build-shell.pl
cp mk/build.mk.sample mk/build.mk
vi mk/build.mk
cd .. ; mkdir build ; cd build
lndir ../src; ln -s ../src/.git .)
perl boot; ./configure --prefix=$HOME/wherever-i-want
make -j 4
inplace/bin/ghc-stage2 --version
inplace/bin/ghc-stage2 --interactivehttps://ghc.haskell.org/trac/ghc/wiki/Building/Using
make install
export PATH=...
cabal ...
ghc ...Note that the user compiled binaries are all Nix based too!
vi mk/build.mk (and add stage=2)
make -C compiler fast
make -C ghc 2
inplace/bin/ghc-stage2 ...
make install (still quite fast)Let’s quickly implement the obvious solution: disable ffull-laziness when -O, but leave it on when -O2.
Let’s add a new test to the test suite for the “Annotations from TemplateHaskell” feature (new in 7.8).
And afterwards look into trac/ghc/ticket/8488.
https://ghc.haskell.org/trac/ghc/wiki/Building/RunningTests
Optional: fix “Annotations from TemplateHaskell”
Questions? Concerns? Consulting contracts?
https://github.com/nilcons/ceh
https://ghc.haskell.org/trac/ghc/wiki/Building
https://ghc.haskell.org/trac/ghc/wiki/Building/Hacking
https://ghc.haskell.org/trac/ghc/wiki/Building/Using
https://ghc.haskell.org/trac/ghc/wiki/Building/RunningTests
https://ghc.haskell.org/trac/ghc/wiki/Building/StandardTargets
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