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Annotation of embedaddon/rsync/packaging/prep-auto-dir, revision 1.1

1.1     ! misho       1: #!/bin/sh -e
        !             2: 
        !             3: # This script will setup the build dir based on the current git branch and the
        !             4: # directory auto-build-save/$BRANCH.  We don't use a symlink for the build dir
        !             5: # because we want to maximize the ccache reuse, so all builds must happen in
        !             6: # the same real dir.  When a dir is moved out of auto-build-save/$BRANCH to the
        !             7: # build dir, it is replaced with a symlink so that it can still be found under
        !             8: # that dir.  The build dir also gets a .branch -> $BRANCH symlink so that we
        !             9: # can figure out the current build dir's branch.
        !            10: 
        !            11: # To get started, just clone the rsync git repo and create the auto-build-save
        !            12: # dir.  If you have an existing git checkout and it is not in a pristine state,
        !            13: # run "make distclean" before creating the auto-build-save dir.
        !            14: 
        !            15: auto_top='auto-build-save'
        !            16: if test -d $auto_top -a -d .git; then
        !            17:     desired_branch=`git rev-parse --abbrev-ref HEAD | tr / %`
        !            18:     if test "$desired_branch" = HEAD; then
        !            19:        echo "ERROR: switch to the right build dir manually when in detached HEAD mode." 1>&2
        !            20:        exit 1
        !            21:     fi
        !            22:     auto_dir="$auto_top/$desired_branch"
        !            23:     if test -d build; then
        !            24:        cur_branch=`readlink build/.branch`
        !            25:     else
        !            26:        cur_branch='/'
        !            27:     fi
        !            28:     if test "$desired_branch" != "$cur_branch"; then
        !            29:        if test "$cur_branch" != /; then
        !            30:            rm -f "$auto_top/$cur_branch"
        !            31:            mv build "$auto_top/$cur_branch"
        !            32:        fi
        !            33:        test -d "$auto_dir" || mkdir "$auto_dir"
        !            34:        test -h "$auto_dir/.branch" || ln -s "$desired_branch" "$auto_dir/.branch"
        !            35:        mv "$auto_dir" build
        !            36:        ln -s ../build "$auto_dir"
        !            37:     fi
        !            38:     if test ! -h Makefile; then
        !            39:        rm -f Makefile
        !            40:        ln -s packaging/auto-Makefile Makefile
        !            41:     fi
        !            42:     echo $desired_branch
        !            43: fi