build-hc-pkg

   1 #!/usr/bin/env bash
   2 set -e
   3
   4 function detect_platform_type () {
   5     local -r canon_name="canon-name/src/canon-name"
   6
   7     if [[ ! -x "$canon_name" ]]; then
   8         gmake -f mk/canon-name.mk
   9     fi
  10
  11     "$canon_name"
  12 }
  13
  14 function detect_number_of_cpus () {
  15     case "$(detect_platform_type)" in
  16         *-*-darwin)
  17             ioreg -r -c IOCPU | fgrep -c IOCPUNumber
  18             ;;
  19         *)
  20             echo "WARNING: I don't know how to detect the number of processors on this platform." >&2
  21             echo "WARNING: GHC will be built using only 1 processor. Expect some slowdown." >&2
  22             echo 1
  23             ;;
  24     esac
  25 }
  26
  27 function say_hello () {
  28     local -r platform=$(detect_platform_type)
  29     local -r n_cpus=$(detect_number_of_cpus)
  30     echo "This is build-hc-pkg, running on $platform with $n_cpus processors."
  31 }
  32
  33 function srcpath () {
  34     local -r archive="work/archive"
  35     local srcpath=""
  36
  37     if [[ -e "$archive" ]]; then
  38         srcpath=$(cat "$archive")
  39     fi
  40
  41     if [[ -z "$srcpath" || ! -e "$srcpath" ]]; then
  42         mkdir -p work
  43         read -e -p "Enter the file path to ghc-x.y.z-src.tar.bz2: " srcpath
  44         if [[ -e "$srcpath" ]]; then
  45             mkdir -p work
  46             echo "$srcpath" > "$archive"
  47         else
  48             echo "$srcpath not found." >&2
  49             exit 1
  50         fi
  51     fi
  52
  53     echo "$srcpath"
  54 }
  55
  56 function build_hc_pkg () {
  57     local -r srcpath="$(srcpath)"
  58
  59     gmake \
  60         -j $(($(detect_number_of_cpus) + 1)) \
  61         -f mk/main.mk \
  62         SRCPATH="$srcpath" \
  63         PLATFORM="$(detect_platform_type)" \
  64         SHELL="$SHELL"
  65
  66     echo "If you are done, run \"$0 clean\" to cleanup the working directory."
  67 }
  68
  69 function main () {
  70     case "$1" in
  71         "")
  72             say_hello
  73             build_hc_pkg
  74             exit
  75             ;;
  76         "clean")
  77             echo "Cleaning..."
  78             rm -rf work
  79             exit
  80             ;;
  81         *)
  82             echo "Usage: $0 [clean]" >&2
  83             exit 1
  84             ;;
  85     esac
  86 }
  87
  88 main $@