Scalaを勉強しなおすために、まずHaskellを勉強してからの方がScalaを理解しやすいという話を聞いたので、Haskellの勉強を始めることにしました。ということでまずはHaskellのコンパイラ、GHC（The Glasgow Haskell Compiler）をインストールしました。yumであっさりインストールできてしまいました。
# yum install ghc Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: ftp.iij.ad.jp * epel: ftp.tsukuba.wide.ad.jp * extras: ftp.iij.ad.jp * remi: rpms.famillecollet.com * updates: ftp.iij.ad.jp Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package ghc.x86_64 0:6.10.4-3.el5 set to be updated --> Processing Dependency: gmp-devel for package: ghc --> Processing Dependency: libgmp.so.3()(64bit) for package: ghc --> Running transaction check ---> Package gmp.x86_64 0:4.1.4-10.el5 set to be updated ---> Package gmp-devel.x86_64 0:4.1.4-10.el5 set to be updated --> Finished Dependency Resolution Dependencies Resolved ======================================================================================================================== Package Arch Version Repository Size ======================================================================================================================== Installing: ghc x86_64 6.10.4-3.el5 epel 43 M Installing for dependencies: gmp x86_64 4.1.4-10.el5 base 201 k gmp-devel x86_64 4.1.4-10.el5 base 569 k Transaction Summary ======================================================================================================================== Install 3 Package(s) Upgrade 0 Package(s) Total download size: 44 M Is this ok [y/N]: y Downloading Packages: (1/3): gmp-4.1.4-10.el5.x86_64.rpm | 201 kB 00:00 (2/3): gmp-devel-4.1.4-10.el5.x86_64.rpm | 569 kB 00:00 (3/3): ghc-6.10.4-3.el5.x86_64.rpm | 43 MB 00:07 ------------------------------------------------------------------------------------------------------------------------ Total 5.5 MB/s | 44 MB 00:08 Running rpm_check_debug Running Transaction Test Finished Transaction Test Transaction Test Succeeded Running Transaction Installing : gmp 1/3 Installing : gmp-devel 2/3 Installing : ghc 3/3 Installed: ghc.x86_64 0:6.10.4-3.el5 Dependency Installed: gmp.x86_64 0:4.1.4-10.el5 gmp-devel.x86_64 0:4.1.4-10.el5 Complete!
コマンドが存在することを確認します。
# which ghci /usr/bin/ghci # which ghc /usr/bin/ghc
バージョンの確認。
# ghc --version
The Glorious Glasgow Haskell Compilation System, version 6.10.4
対話モードで起動してみます。
# ghci GHCi, version 6.10.4: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim ... linking ... done. Loading package integer ... linking ... done. Loading package base ... linking ... done. Prelude> Prelude> :q Leaving GHCi. #
ひとまずコンパイラのインストールは問題なくできたようです。
