AC_MSG_CHECKING([for GHC version date])
if test -d _darcs; then
changequote(, )dnl
- ver_date=`darcs changes --last=100 --xml | 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`
+ 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($PACKAGE_VERSION)
elif test -f VERSION; then
- PACKAGE_VERSION=`cat VERSION`
+ PACKAGE_VERSION=`cat VERSION`
AC_MSG_RESULT($PACKAGE_VERSION)
else
- AC_MSG_ERROR([no version found])
+ AC_MSG_WARN([cannot determine snapshot version: no _darcs directory and no VERSION file])
fi
fi