Merge branch 'mainstream'

[sliver-openvswitch.git] / acinclude.m4

diff --git a/acinclude.m4 b/acinclude.m4
index 717c681..071fe54 100644 (file)
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -134,14 +134,16 @@ AC_DEFUN([OVS_CHECK_LINUX], [
     AC_MSG_RESULT([$kversion])
 
     if test "$version" -ge 3; then
-       : # Linux 3.x
-    elif test "$version" = 2 && test "$patchlevel" -ge 6; then
-       : # Linux 2.6.x
+       if test "$version" = 3 && test "$patchlevel" -le 10; then
+          : # Linux 3.x
+       else
+         AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 3.10.x is not supported])
+       fi
     else
-       if test "$KBUILD" = "$KSRC"; then
-         AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version 2.6 or later is required])
+       if test "$version" -le 1 || test "$patchlevel" -le 5 || test "$sublevel" -le 31; then
+         AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version 2.6.32 or later is required])
        else
-         AC_ERROR([Linux kernel in build tree $KBUILD (source tree $KSRC) is version $kversion, but version 2.6 or later is required])
+         : # Linux 2.6.x
        fi
     fi
     if (test ! -e "$KBUILD"/include/linux/version.h && \
@@ -256,9 +258,7 @@ AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
   OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
   OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
   OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
-
-  OVS_GREP_IFELSE([$KSRC/include/linux/string.h], [kmemdup], [],
-                  [OVS_GREP_IFELSE([$KSRC/include/linux/slab.h], [kmemdup])])
+  OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
 
   OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool],
                   [OVS_DEFINE([HAVE_BOOL_TYPE])])
@@ -270,7 +270,7 @@ AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
   OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
   OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
 
-  OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [NLA_NUL_STRING])
+  OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
   OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
   OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
   OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
@@ -526,3 +526,50 @@ AC_DEFUN([OVS_ENABLE_SPARSE],
      [if test $ovs_cv_gnu_make_if = yes; then
         CC='$(if $(C),REAL_CC="'"$CC"'" CHECK="$(SPARSE) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'
       fi])])
+
+dnl OVS_PTHREAD_SET_NAME
+dnl
+dnl This checks for three known variants of pthreads functions for setting
+dnl the name of the current thread:
+dnl
+dnl   glibc: int pthread_setname_np(pthread_t, const char *name);
+dnl   NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
+dnl   FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
+dnl
+dnl For glibc and FreeBSD, the arguments are just a thread and its name.  For
+dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
+dnl provide to it.
+dnl
+dnl This macro defines:
+dnl
+dnl    glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
+dnl    NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
+dnl    FreeBSD: HAVE_PTHREAD_SET_NAME_NP
+AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
+  [AC_CHECK_FUNCS([pthread_set_name_np])
+   if test $ac_cv_func_pthread_set_name_np != yes; then
+     AC_CACHE_CHECK(
+       [for pthread_setname_np() variant],
+       [ovs_cv_pthread_setname_np],
+       [AC_LINK_IFELSE(
+        [AC_LANG_PROGRAM([#include <pthread.h>
+  ], [pthread_setname_np(pthread_self(), "name");])],
+        [ovs_cv_pthread_setname_np=glibc],
+         [AC_LINK_IFELSE(
+          [AC_LANG_PROGRAM([#include <pthread.h>
+], [pthread_setname_np(pthread_self(), "%s", "name");])],
+           [ovs_cv_pthread_setname_np=netbsd],
+          [ovs_cv_pthread_setname_np=none])])])
+     case $ovs_cv_pthread_setname_np in # (
+       glibc)
+         AC_DEFINE(
+           [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
+           [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
+         ;; # (
+       netbsd)
+         AC_DEFINE(
+           [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
+           [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
+         ;;
+     esac
+   fi])