X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=acinclude.m4;h=63a036e3d16123082c2ce21ef53f967af26cba15;hb=5b95ab0edf18e44d6624c8aa98b658df2fbb48f2;hp=fa6f534deb3cfa4f1f276a7cc77ca0a67083c643;hpb=431488e6638d3fbb53d215fa10d2ff2d8f1c2824;p=openvswitch

diff --git a/acinclude.m4 b/acinclude.m4
index fa6f534d..63a036e3 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -14,6 +14,17 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+dnl OVS_ENABLE_WERROR
+AC_DEFUN([OVS_ENABLE_WERROR],
+  [AC_ARG_ENABLE(
+     [Werror],
+     [AC_HELP_STRING([--enable-Werror], [Add -Werror to CFLAGS])],
+     [], [enable_Werror=no])
+   AC_CONFIG_COMMANDS_PRE(
+     [if test "X$enable_Werror" = Xyes; then
+        CFLAGS="$CFLAGS -Werror"
+      fi])])
+
 dnl OVS_CHECK_LINUX26
 dnl
 dnl Configure linux kernel source tree 
@@ -193,6 +204,7 @@ AC_DEFUN([OVS_CHECK_LINUX26_COMPAT], [
                   [OVS_DEFINE([HAVE_ICMP6_HDR])])
   OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [skb_warn_if_lro],
                   [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
+  OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [consume_skb])
 
   OVS_GREP_IFELSE([$KSRC26/include/linux/string.h], [kmemdup], [],
                   [OVS_GREP_IFELSE([$KSRC26/include/linux/slab.h], [kmemdup])])
@@ -336,3 +348,38 @@ AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
       AC_MSG_ERROR([This appears to be XenServer $ovs_cv_xsversion, but only XenServer 5.6.100 or later is supported.  (If you are really using a supported version of XenServer, you may override this error message by specifying 'ovs_cv_xsversion=5.6.100' on the "configure" command line.)])
       ;;
   esac])
+
+dnl OVS_MAKE_HAS_IF([if-true], [if-false])
+dnl
+dnl Checks whether make has the GNU make $(if condition,then,else) extension.
+dnl Runs 'if-true' if so, 'if-false' otherwise.
+AC_DEFUN([OVS_MAKE_HAS_IF],
+  [AC_CACHE_CHECK(
+     [whether ${MAKE-make} has GNU make \$(if) extension],
+     [ovs_cv_gnu_make_if],
+     [cat <<'EOF' > conftest.mk
+conftest.out:
+	echo $(if x,y,z) > conftest.out
+.PHONY: all
+EOF
+      rm -f conftest.out
+      AS_ECHO(["$as_me:$LINENO: invoking ${MAKE-make} -f conftest.mk all:"]) >&AS_MESSAGE_LOG_FD 2>&1
+      ${MAKE-make} -f conftest.mk conftest.out >&AS_MESSAGE_LOG_FD 2>&1
+      AS_ECHO(["$as_me:$LINENO: conftest.out contains:"]) >&AS_MESSAGE_LOG_FD 2>&1
+      cat conftest.out >&AS_MESSAGE_LOG_FD 2>&1
+      result=`cat conftest.out`
+      rm -f conftest.mk conftest.out
+      if test "X$result" = "Xy"; then
+        ovs_cv_gnu_make_if=yes
+      else
+        ovs_cv_gnu_make_if=no
+      fi])
+   AS_IF([test $ovs_cv_gnu_make_if = yes], [$1], [$2])])
+
+dnl OVS_ENABLE_SPARSE
+AC_DEFUN([OVS_ENABLE_SPARSE],
+  [OVS_MAKE_HAS_IF(
+     [AC_CONFIG_COMMANDS_PRE(
+        [: ${SPARSE=sparse}
+         AC_SUBST([SPARSE])
+         CC='$(if $(C),REAL_CC="'"$CC"'" CHECK="$(SPARSE) -I $(top_srcdir)/include/sparse" cgcc,'"$CC"')'])])])