generate-version.sh

   1 #!/bin/sh
   2
   3 git_available_p() {
   4     # Check that (1) we have git (2) this is a git tree.
   5     if ( command -v git >/dev/null && git describe >/dev/null 2>/dev/null )
   6     then
   7         echo "ok"
   8     else
   9         echo ""
  10     fi
  11 }
  12
  13 AVAILABLE=`git_available_p`
  14 if [ -f version.lisp-expr -a -z "$AVAILABLE" ]
  15 then
  16     # Relase tarball, leave version.lisp-expr alone.
  17     exit 0
  18 elif [ -z "$AVAILABLE" ]
  19 then
  20     echo "Can't run 'git describe' and version.lisp-expr is missing." >&2
  21     echo "To fix this, either install git or create a fake version.lisp-expr file." >&2
  22     echo "You can create a fake version.lisp-expr file like this:" >&2
  23     echo "    \$ echo '\"1.0.99.999\"' > version.lisp-expr" >&2
  24     exit 1
  25 fi
  26 # Build it.
  27 version_head=`git rev-parse HEAD`
  28 if grep -q "ref: refs/heads/.*" .git/HEAD > /dev/null 2>&1
  29 then
  30     version_branchname=`cut -d / -f 3- < .git/HEAD`
  31 else
  32     # Detached head.
  33     version_branchname="HEAD"
  34 fi
  35 if [ -z "$SBCL_BUILDING_RELEASE_FROM" ]
  36 then
  37     if [ "`git rev-list HEAD --not origin/master`" = '' ]
  38     then
  39         # If origin/master contains all the commits on current
  40         # branch, use current head as the root instead.
  41         version_root="$version_branchname"
  42     else
  43         version_root="origin/master"
  44     fi
  45 else
  46     version_root="$SBCL_BUILDING_RELEASE_FROM"
  47 fi
  48 version_base=`git rev-parse "$version_root"`
  49 version_tag=`git describe --tags --match="sbcl*" --abbrev=0 $version_base`
  50 version_release=`echo $version_tag | sed -e 's/sbcl[_-]//' | sed -e 's/_/\./g'`
  51 # Using wc -l instead of --count argument to rev-list because
  52 # pre-1.7.2 Gits are still common out in the wilderness.
  53 version_n_root=`git rev-list $version_base --not $version_tag | wc -l | sed -e 's/[ \t]//g'`
  54 version_n_branch=`git rev-list HEAD --not $version_base | wc -l | sed -e 's/[ \t]//g'`
  55 if [ -z "$NO_GIT_HASH_IN_VERSION" ]
  56 then
  57     version_hash="-`git rev-parse --short $version_head`"
  58 else
  59     version_hash=""
  60 fi
  61 if git diff HEAD --no-ext-diff --quiet --exit-code
  62 then
  63     version_dirty=""
  64 else
  65     version_dirty="-dirty"
  66 fi
  67 # Now that we have all the pieces, put them together.
  68 cat >version.lisp-expr <<EOF
  69 ;;; This file is auto-generated using generate-version.sh. Every time
  70 ;;; you re-run make.sh, this file will be overwritten if you are
  71 ;;; working from a Git checkout.
  72 EOF
  73 if [ "$version_base" = "$version_head" ]
  74 then
  75     if [ "0" = "$version_n_root" ]
  76     then
  77         printf "\"%s%s\"\n" \
  78             $version_release $version_dirty >>version.lisp-expr
  79     else
  80         printf "\"%s.%s%s%s\"\n" \
  81             $version_release $version_n_root \
  82             $version_hash $version_dirty >>version.lisp-expr
  83     fi
  84 else
  85     echo "base=$version_base"
  86     echo "head=$version_head"
  87     printf "\"%s.%s.%s.%s%s%s\"\n" \
  88         $version_release $version_n_root \
  89         $version_branchname $version_n_branch \
  90         $version_hash $version_dirty >>version.lisp-expr
  91 fi