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