# -*- autoconf -*-
-# Copyright (c) 2008, 2009 Nicira Networks.
+# Copyright (c) 2008, 2009, 2010 Nicira Networks.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
AC_MSG_CHECKING([for Linux 2.6 source directory])
KSRC26=$KBUILD26
if test ! -e $KSRC26/include/linux/kernel.h; then
- KSRC26=`(cd $KBUILD26 && pwd -P) | sed 's,-[[^-]]*$,-common,'`
+ case `echo "$KBUILD26" | sed 's,/*$,,'` in # (
+ */build)
+ KSRC26=`echo "$KBUILD26" | sed 's,/build/*$,/source,'`
+ ;; # (
+ *)
+ KSRC26=`(cd $KBUILD26 && pwd -P) | sed 's,-[[^-]]*$,-common,'`
+ ;;
+ esac
if test ! -e $KSRC26/include/linux/kernel.h; then
AC_MSG_ERROR([cannot find source directory])
fi
AC_ERROR([Linux kernel in build tree $KBUILD26 (source tree $KSRC26) is not version 2.6])
fi
fi
- if ! test -e "$KBUILD26"/include/linux/version.h || \
- ! test -e "$KBUILD26"/include/linux/autoconf.h; then
+ if test ! -e "$KBUILD26"/include/linux/version.h || \
+ (test ! -e "$KBUILD26"/include/linux/autoconf.h && \
+ test ! -e "$KBUILD26"/include/generated/autoconf.h); then
AC_MSG_ERROR([Linux kernel source in $KBUILD26 is not configured])
fi
OVS_CHECK_LINUX26_COMPAT
char *token1, *token2;
token1 = strtok_r(string, ":", &save_ptr);
token2 = strtok_r(NULL, ":", &save_ptr);
+ freopen ("/dev/null", "w", stdout);
printf ("%s %s\n", token1, token2);
return 0;
]])],
AC_DEFUN([OVS_ENABLE_OPTION],
[OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
AC_SUBST([WARNING_FLAGS])])
+
+dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
+dnl Check whether the given C compiler OPTION is accepted.
+dnl If so, enable the given Automake CONDITIONAL.
+
+dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
+AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
+ [OVS_CHECK_CC_OPTION(
+ [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
+ AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
dnl ----------------------------------------------------------------------