BUILD-NOTES.txt

ghcup install ghc 8.6.5
ghcup set ghc 8.6.5
cabal install alex-3.2.6
cabal install happy-1.19.11
export PATH=~/.cabal/bin:$PATH
git clone https://gitlab.haskell.org/harendra/ghc.git
cd ghc
git checkout eventlog-enhancements
git submodule update --init --recursive
cp mk/build.mk.sample mk/build.mk
# Uncomment "BuildFlavour = quick" line in mk/build.mk
# sudo apt-get install autotools-dev
# sudo apt-get install autoconf
./boot
./configure
make
./inplace/bin/ghc-stage2
make binary-dist # This will fail if autoreconf version is too recent (Use 2.69)

# For faster incremental builds after changes,
# uncomment "stage = 2" line in mk/build.mk

------------------------------------------------------------------------------

# Ensure nix-profile is not in PATH to avoid any nix related issues

# Find alex and happy versions required from aclocal.m4
# GHC builds often fail because of incorrect happy versions
# Need to find the correct one if the build fails
A working configure output:

Configure completed successfully.

   Building GHC version  : 8.8.4
          Git commit id  : 6cf8f835267581d551ca6695b3b02c34797e2cf4

   Build platform        : x86_64-unknown-linux
   Host platform         : x86_64-unknown-linux
   Target platform       : x86_64-unknown-linux

   Bootstrapping using   : /home/harendra/.ghcup/bin/ghc
      which is version   : 8.6.5
      with threaded RTS? : YES

   Using (for bootstrapping) : gcc
   Using gcc                 : gcc
      which is version       : 8.3.0
   Building a cross compiler : NO
   Unregisterised            : NO
   hs-cpp       : gcc
   hs-cpp-flags : -E -undef -traditional
   ar           : ar
   ld           : ld.gold
   nm           : nm
   libtool      :
   objdump      : objdump
   ranlib       : ranlib
   windres      :
   dllwrap      :
   genlib       :
   Happy        : /home/harendra/.cabal/bin/happy (1.19.11)
   Alex         : /home/harendra/.cabal/bin/alex (3.2.6)
   Perl         : /usr/bin/perl
   sphinx-build :
   xelatex      :

   Using LLVM tools
      clang : clang
      llc   : llc-7
      opt   : opt-7

   HsColour was not found; documentation will not contain source links

   Tools to build Sphinx HTML documentation available: NO
   Tools to build Sphinx PDF documentation available: NO
----------------------------------------------------------------------