基于centos 7 构建

安装haskell 构建工具

curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh

依赖包问题

• gmp

yum install -y gmp-devel

• pcre

yum install -y pcre-devel 

• mysql

The program 'mysql_config' is required but it could not be found

yum install -y mariadb-devel

• error "AES/PCLMUL instructions not enabled"
  

  禁用aesni

cabal build all --constraint="cryptonite -support_aesni"

• pg

  注意版本问题，此方法可能会太低了

The program 'pg_config' is required but it could not be found

yum install -y postgresql-devel

• Missing (or bad) C library: odbc

yum install -y unixODBC-devel

• 可能需要的安装

yum  install -y libstdc++-devel libstdc++-static gcc-c++ ncurses-devel

构建

git clone https://github.com/hasura/graphql-engine.git

cd graphql-engine/server

cabal build all --constraint="cryptonite -support_aesni"

一些问题

适合内存不够用的场景，通过swap 解决，就是构建会比较慢，实际推荐使用一台配置比较好的机器构建（cpu，内存，以及磁盘）

dd if=/dev/zero of=/var/swapfile bs=1G count=10

mkswap /var/swapfile

swapon /var/swapfile

/etc/fstab

/var/swapfile swap swap defaults 0 0

 vim /etc/sysctl.conf

vm.swappiness = 60

sysctl -p

性能相关参数

默认没有开启profile 我们可以通过手工开启，方便性能优化
server/graphql-engine.cabal

flag profiling

  description: Configures the project to be profiling-compatible

  default: True

  manual: True

说明

以上是一个构建实践说明，推荐还是使用高版本的系统haskell 构建问题是不少，因为对于haskell 不是很了解，性能参数上边的还需要研究下

参考资料

https://gmplib.org/
https://www.haskell.org/ghcup/install/
https://github.com/hasura/graphql-engine
https://github.com/haskell-crypto/cryptonite
https://github.com/input-output-hk/cardano-node/issues/1747
https://www.haskell.org/ghcup/install/
https://gitlab.haskell.org/ghc/ghc/-/wikis/commentary/rts
https://gitlab.haskell.org/ghc/ghc/-/wikis/commentary/rts/config
https://downloads.haskell.org/~ghc/9.2.3/docs/html/users_guide/profiling.html#prof-compiler-options
https://downloads.haskell.org/~ghc/9.2.3/docs/html/users_guide/debug-info.html#implementor-s-notes-dwarf-annotations
https://github.com/fpco/ghc-prof-flamegraph
https://www.fpcomplete.com/blog/2015/04/ghc-prof-flamegraph/
https://downloads.haskell.org/~ghc/9.2.3/docs/html/users_guide/profiling.html
https://www.tweag.io/blog/2020-01-30-haskell-profiling/
http://cnhaskell.com/chp/25.html