AC_DEFINE([HAVE_GCC_HAS_NO_UNIT_AT_A_TIME], [1], [Define to 1 if gcc supports -fno-unit-at-a-time.])
fi])
+# FP_GCC_HAS_WRAPV
+# --------------------------
+AC_DEFUN([FP_GCC_HAS_WRAPV],
+[AC_REQUIRE([FP_HAVE_GCC])
+AC_CACHE_CHECK([whether gcc has -fwrapv], [fp_cv_gcc_has_wrapv],
+[FP_COMPARE_VERSIONS([$fp_gcc_version], [-ge], [3.4],
+ [fp_cv_gcc_has_wrapv=yes],
+ [fp_cv_gcc_has_wrapv=no])])
+if test "$fp_cv_gcc_has_wrapv" = "yes"; then
+ AC_DEFINE([HAVE_GCC_HAS_WRAPV], [1], [Define to 1 if gcc supports -fwrapv.])
+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])