[PATCH] add --with-kernel-includes configure option to libnetfilter_conntrack

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Hi,

[This is a rediff which includes support for directories with
spaces.]


This adds the --with-kernel-includes configure option to
libnetfilter_conntrack and updates README. This option allows compiling
with kernel headers not located at /usr/include.

Signed-off-by: Bart De Schuymer <bdschuym@xxxxxxxxxx>


--- libnetfilter_conntrack-0.0.99/configure.in.old	2009-01-19 17:48:09.000000000 +0100
+++ libnetfilter_conntrack-0.0.99/configure.in	2009-01-20 19:24:32.000000000 +0100
@@ -72,11 +72,34 @@ if test ! -z "$libdir"; then
	CFLAGS="$CFLAGS -DLIBNETFILTER_CONNTRACK_DIR=$MODULE_DIR"
fi

-CFLAGS="$CFLAGS $LIBNFNETLINK_CFLAGS"
LIBNFCONNTRACK_LIBS="$LIBNFNETLINK_LIBS"

AC_SUBST(LIBNFCONNTRACK_LIBS)

+dnl Allows compiling the library with kernel include headers not located
+dnl at /usr/include
+AC_ARG_WITH([kernel-includes],
+    [AS_HELP_STRING([--with-kernel-includes=PATH],
+    [Path to kernel source include files @<:@default=/usr/include@:>@])],
+    [
+    if test "x$withval" = xyes -o "x$withval" = x ; then
+	AC_MSG_ERROR(--with-kernel-includes must be given the path to your kernel source include files.)
+    fi
+    if ! test -d "$withval" ; then
+	AC_MSG_ERROR(The --with-kernel-includes path $withval is not a directory.)
+    fi
+    if ! test -d "$withval/linux" ; then
+	AC_MSG_ERROR(The --with-kernel-includes directory $withval must contain the directory 'linux'.)
+    fi
+    if ! test -r "$withval/linux" ; then
+	AC_MSG_ERROR(You must have read permissions for the kernel source include files.)
+    fi
+    KERNEL_INCLUDES=`(cd "$withval"; /bin/pwd)`
+    TMP_CFLAGS_OTHER=`$PKG_CONFIG libnfnetlink --cflags-only-other`
+    TMP_CFLAGS_I=`$PKG_CONFIG libnfnetlink --cflags-only-I`
+    CFLAGS="$CFLAGS $TMP_CFLAGS_OTHER -I\"$KERNEL_INCLUDES\" $TMP_CFLAGS_I"],
+    CFLAGS="$CFLAGS $LIBNFNETLINK_CFLAGS")
+
dnl Output the makefile
AC_OUTPUT(Makefile src/Makefile include/Makefile utils/Makefile qa/Makefile include/libnetfilter_conntrack/Makefile include/internal/Makefile src/conntrack/Makefile src/expect/Makefile src/deprecated/Makefile src/deprecated/l3extensions/Makefile src/deprecated/extensions/Makefile libnetfilter_conntrack.pc)

--- libnetfilter_conntrack-0.0.99/README.old	2009-01-19 17:51:11.000000000 +0100
+++ libnetfilter_conntrack-0.0.99/README	2009-01-19 17:58:21.000000000 +0100
@@ -38,6 +38,9 @@ Linux kernel version >= 2.6.18 (http://w
 * ctnetlink (ip_conntrack_netlink)
* connection tracking event notification API
+You can specify the location of your kernel sources using the
+"--with-kernel-includes" configure option.
+
= Documentation =

The libnetfilter_conntrack API is well documented, however we don't have any
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