external/boost/repack_tarball.sh

   1 #! /bin/sh
   2
   3 # Repack the boost tarball as xz (much faster to unpack) and remove
   4 # a lot of needless files such as generated html docs.
   5
   6 tarball="$1"
   7
   8 if test -z "$tarball" -o ! -f "$tarball"; then
   9     echo "Usage: $0 <tarball>"
  10     exit 1
  11 fi
  12
  13 tmpdir=$(mktemp -d)
  14
  15 if ! test -d "$tmpdir"; then
  16     echo mktemp failed
  17     exit 1
  18 fi
  19
  20 echo Unpacking "$tarball" ...
  21 tar x -C "$tmpdir" -f "$tarball"
  22 if test $? -ne 0; then
  23     echo tar x failed
  24     rm -rf "$tmpdir"
  25     exit 1
  26 fi
  27
  28 echo Removing unnecessary files ...
  29 find "$tmpdir" \( -name doc -o -name test -o -name example \) -type d -prune -print0 | xargs -0 rm -r
  30 if test $? -ne 0; then
  31     echo file removal failed
  32     rm -rf "$tmpdir"
  33     exit 1
  34 fi
  35
  36 name="$(basename "$tarball" | sed 's/\.tar.*$//').tar.xz"
  37 dir=$(ls "$tmpdir")
  38
  39 echo Creating "$name" ...
  40 # To make the tarball reproducible, use a timestamp of a file inside the tarball (they all seem to have the same mtime).
  41 if ! test -f "$tmpdir/$dir/README.md"; then
  42     echo timestamp retrieval failed, check the script
  43     rm -rf "$tmpdir"
  44     exit 1
  45 fi
  46 # Many of the options are to make the tarball reproducible.
  47 LC_ALL=C tar c -C "$tmpdir" --xz -f "$(pwd)/$name" --format=gnu --sort=name --owner=0 --group=0 --mode=go=rX,u=rwX --mtime "$tmpdir/$dir/README.md" "$dir"
  48 if test $? -ne 0; then
  49     echo tar c failed
  50     rm -rf "$tmpdir"
  51     exit 1
  52 fi
  53
  54 echo Cleaning up ...
  55 rm -rf "$tmpdir"
  56
  57 sha256sum "$name"
  58
  59 echo Done.
  60 exit 0