X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=aclocal.m4;h=f908e9f8f2b76833e83a5d5c556aba3e130e08a5;hb=e30aca19def5c629a8429bd57e56535b7f8f85c8;hp=36c0128b7b2e98ed7e7595dbba9aaeb2b47ba7e1;hpb=50ebea6a8607f4d83dd2d8d99acf9a55e4d39349;p=ghc-hetmet.git

diff --git a/aclocal.m4 b/aclocal.m4
index 36c0128..f908e9f 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -969,7 +969,27 @@ fi])
 # FP_SETUP_PROJECT_VERSION
 # ---------------------
 AC_DEFUN([FP_SETUP_PROJECT_VERSION],
-[# Some renamings
+[
+if test "$RELEASE" = "NO"; then
+    AC_MSG_CHECKING([for GHC version date])
+    if test -d _darcs; then
+        changequote(, )dnl
+        ver_date=`darcs changes --quiet --no-summary --xml | head -500 | grep 'date=' | sed "s/^.*date='\([0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]\).*$/\1/g" | sort -n | tail -1`
+        if echo $ver_date | grep '^[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]$' 2>&1 >/dev/null; then true; else
+        changequote([, ])dnl
+                AC_MSG_ERROR([failed to detect version date: check that darcs is in your path])
+        fi
+        PACKAGE_VERSION=${PACKAGE_VERSION}.$ver_date
+        AC_MSG_RESULT($PACKAGE_VERSION)
+    elif test -f VERSION; then
+        PACKAGE_VERSION=`cat VERSION`
+        AC_MSG_RESULT($PACKAGE_VERSION)
+    else
+        AC_MSG_WARN([cannot determine snapshot version: no _darcs directory and no VERSION file])
+    fi
+fi
+
+# Some renamings
 AC_SUBST([ProjectName], [$PACKAGE_NAME])
 AC_SUBST([ProjectVersion], [$PACKAGE_VERSION])