Adopt versionong mechanics from fastfoo

.gitignore

@@ -1 +1,2 @@
 .autoclean
+eecc-*.tar.gz

setup/mk.sh

@@ -38,7 +38,7 @@ build1() {
     dstpath=${srcpath%.skel}
     perl -pe "
         s|__EECC_INI_PATH__|$EECC_INI_PATH_GLOBAL:\\\$HOME/$EECC_INI_PATH_USER|;
-        s|__VERSION__|$VERSION|;
+        s|__VERSION__|$(get_version)|;
     " < $srcpath > $dstpath
     echo $dstpath >> built.list
 }
@@ -60,7 +60,8 @@ clean() {
 }
 
 dist() {
-    local dirname=eecc-${VERSION}
+    local version=$(get_version)
+    local dirname=eecc-$version
     mkdir -p $dirname
     cp -R   bin \
             config.mk \
@@ -71,10 +72,10 @@ dist() {
             test \
             utils \
             $dirname
+    sed -ie "s/^VERSION = .*/VERSION = $version/" $dirname/config.mk
     tar -cf $dirname.tar $dirname
     gzip $dirname.tar
     rm -rf $dirname
-    echo $dirname.tar.gz >> built.list
 }
 
 install() {
@@ -84,6 +85,36 @@ install() {
     test -f .autoclean && clean || :
 }
 
+get_version() {
+    local version=$VERSION
+    local stage=$STAGE
+    if git rev-parse HEAD >&/dev/null;
+    then    # we are in git repo... so we can get smart
+        local lasttag=$(git tag | grep ^v | tail -n1)
+        if ! git describe --tags --exact-match HEAD >&/dev/null;
+        then    # we are not at later commit than the last tag
+            local sha=g$(git describe --always HEAD)
+        fi
+        if test "$(git diff --shortstat 2>/dev/null)" != "";
+        then    # thr tree is "dirty", i.e. has been edited
+            local dirty=dirty
+        fi
+        version=${lasttag:1}
+        case $stage:$sha:$dirty in
+            ::)         suffix=""                    ;;
+            ::dirty)    suffix="+$dirty"             ;;
+            :g*:)       suffix="+$sha"               ;;
+            :g*:dirty)  suffix="+$sha.dirty"         ;;
+            *::)        suffix="-$stage"             ;;
+            *::dirty)   suffix="-$stage+$dirty"      ;;
+            *:g*:)      suffix="-$stage+$sha"        ;;
+            *:g*:dirty) suffix="-$stage+$sha.$dirty" ;;
+        esac
+        version=$version$suffix
+    fi
+    echo $version
+}
+
 run_test() {
     pushd test
     find -maxdepth 1 -type f \! -name '*.skel' | while read test;