summaryrefslogtreecommitdiffstats
path: root/configure.ac
blob: d663f53b12e9e6091f74bf63352997e1fcc4e752 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
dnl Boilerplate
AC_INIT([ipset], [6.22], [kadlec@blackhole.kfki.hu])
AC_CONFIG_AUX_DIR([build-aux])
AC_CANONICAL_HOST
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_HEADER([config.h])
AM_INIT_AUTOMAKE([foreign subdir-objects tar-pax])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])

AC_ENABLE_STATIC
LT_INIT([dlopen])
LT_CONFIG_LTDL_DIR([libltdl])
LTDL_INIT([nonrecursive])

dnl Shortcut: Linux supported alone
case "$host" in
*-*-linux* | *-*-uclinux*) ;;
*) AC_MSG_ERROR([Linux systems supported exclusively!]);;
esac

dnl Optionnally disable building the kernel module
AC_ARG_WITH([kmod],
            AS_HELP_STRING([--with-kmod=yes/no],
                           [Build the kernel module (default: yes)]),
            [BUILDKMOD="$withval";],
            [BUILDKMOD="yes";])
AM_CONDITIONAL(WITH_KMOD, test "$BUILDKMOD" == "yes")

dnl Additional arguments
dnl Kernel build directory or source tree
AC_ARG_WITH([kbuild],
            AS_HELP_STRING([--with-kbuild=PATH],
                           [Path to kernel build directory]),
            [KBUILDDIR="$withval";])
AC_ARG_WITH([ksource],
            AS_HELP_STRING([--with-ksource=PATH],
                           [Path to kernel source directory, if not the same as the kernel build directory]),
            [KSOURCEDIR="$withval";])
AM_CONDITIONAL(WITH_KBUILDDIR, test "$KBUILDDIR" != "")
AC_SUBST(KBUILDDIR)

if test "$BUILDKMOD" == "yes"
then
dnl Sigh: check kernel version dependencies
if test "$KBUILDDIR" != ""
then
	kbuilddir="$KBUILDDIR"
else
	kbuilddir="/lib/modules/`uname -r`/build"
fi

if test -n "$KSOURCEDIR"; then
	ksourcedir="$KSOURCEDIR"
elif test -e "$kbuilddir/include/linux/netfilter/nfnetlink.h"; then
	ksourcedir="$kbuilddir"
else
	ksourcedir="/lib/modules/$(uname -r)/source"
fi
if test ! -e "$ksourcedir/include/linux/netfilter/nfnetlink.h"
then
	AC_MSG_ERROR([Invalid kernel source directory $ksourcedir])
fi

if test ! -e "$kbuilddir/.config"
then
	AC_MSG_ERROR([The kernel build directory $kbuilddir is not configured])
fi

AC_PROG_GREP
AC_PROG_AWK

if ! $GREP -q "NFNL_SUBSYS_IPSET" "$ksourcedir/include/linux/netfilter/nfnetlink.h" && \
   ! $GREP -q "NFNL_SUBSYS_IPSET" "$ksourcedir/include/uapi/linux/netfilter/nfnetlink.h";
then
	AC_MSG_ERROR([The kernel source directory $ksourcedir is not patched with netlink.patch to support ipset])
fi
fi

dnl Maximal number of sets supported by the kernel, default 256
AC_ARG_WITH([maxsets],
	    AS_HELP_STRING([--with-maxsets=256],
	    		   [Maximal numer of sets supported by the kernel]),
	    [MAXSETS="$withval";])
AM_CONDITIONAL(WITH_MAXSETS, test "$MAXSETS" != "")
AC_SUBST(MAXSETS)

dnl Verbose compiling
AC_ARG_ENABLE([verbose],
	      AS_HELP_STRING([--enable-verbose],
	                     [Enable verbose mode at compiling/linking.]),
	      [case "${enableval}" in
	       yes)	enable_verbose=yes ;;
	       no)	enable_verbose=no ;;
	       *) AC_MSG_ERROR([bad value ${enableval} for --enable-verbose]) ;;
	       esac], [enable_verbose=no])
	      
AC_ARG_ENABLE([debug],
	AS_HELP_STRING([--enable-debug], [enable debug messages @<:@default=disabled@:>@]),
	[], [enable_debug=no])
AS_IF([test "x$enable_debug" = "xyes"], [
	AC_DEFINE(ENABLE_DEBUG, [1], [Debug messages.])
])
AM_CONDITIONAL([ENABLE_DEBUG], [test "x$enable_debug" = xyes])

dnl Enable type modules
AC_ARG_ENABLE([settype_modules],
	          AS_HELP_STRING([--enable-settype-modules],
	          [Enable set type modules support]),
	          [enable_settype_modules="$enableval"],
	          [enable_settype_modules="no"])

AC_ARG_WITH([settype_modules_list],
	        AS_HELP_STRING([--with-settype-modules-list="mod1 mod2 ..."],
	                       [List of dynamic loading modules, ignored if settype-modules is disabled. It could be "all" to build all available settypes as modules]),
	                       [SETTYPE_MODLIST_RAW="$withval";])

SETTYPE_MODLIST=
if test "x$enable_settype_modules" = "xyes"; then
	for mod in $SETTYPE_MODLIST_RAW; do
		if echo $mod | grep "all"; then
			m="${mod}"
		else
			if echo $mod | grep "ipset_"; then
				m="${mod}.c"
			else
				m="ipset_${mod}.c"
			fi
		fi

		SETTYPE_MODLIST="${SETTYPE_MODLIST} $m"
	done

	AC_MSG_RESULT([checking for configuration with dynamic loading modules... $SETTYPE_MODLIST_RAW])
fi
AC_SUBST(SETTYPE_MODLIST)

AM_CONDITIONAL([ENABLE_SETTYPE_MODULES], [test "x$enable_settype_modules" = xyes])

AM_CONDITIONAL([ENABLE_STATIC], [test "x$enable_static" = xyes])
AM_CONDITIONAL([ENABLE_SHARED], [test "x$enable_shared" = xyes])

dnl Checks for programs
: ${CFLAGS=""}

AC_PROG_CC
AM_PROG_CC_C_O
AC_PROG_LIBTOOL
AC_PROG_INSTALL
AC_PROG_LN_S

dnl Checks for libraries
PKG_CHECK_MODULES([libmnl], [libmnl >= 1])

dnl Checks for header files

dnl Checks for declarations
AC_CHECK_DECLS([NLA_F_NESTED, NLA_F_NET_BYTEORDER, NLA_TYPE_MASK],,
		[AC_MSG_ERROR([System kernel header files are older than 2.6.24, use CFLAGS for non-default location])],
		[#include <sys/socket.h>
#include <linux/netlink.h>])

dnl Checks for typedefs, structures
AC_CHECK_TYPES([union nf_inet_addr],,,[#include <linux/types.h>
#include <netinet/in.h>
#include <linux/netfilter.h>])

dnl Checks for functions
AC_CHECK_FUNCS(gethostbyname2)

if test "$BUILDKMOD" == "yes"
then
dnl Check kernel incompatibilities... Ugly like hell
AC_MSG_CHECKING([kernel source for struct xt_action_param])
if test -f $ksourcedir/include/linux/netfilter/x_tables.h && \
   $GREP -q 'struct xt_action_param' $ksourcedir/include/linux/netfilter/x_tables.h; then
	AC_MSG_RESULT(yes)
	AC_SUBST(HAVE_STRUCT_XT_ACTION_PARAM, define)
else
	AC_MSG_RESULT(no)
	AC_SUBST(HAVE_STRUCT_XT_ACTION_PARAM, undef)
fi

AC_MSG_CHECKING([kernel source for vzalloc])
if test -f $ksourcedir/include/linux/vmalloc.h && \
   $GREP -q 'vzalloc' $ksourcedir/include/linux/vmalloc.h; then
	AC_MSG_RESULT(yes)
	AC_SUBST(HAVE_VZALLOC, define)
else
	AC_MSG_RESULT(no)
	AC_SUBST(HAVE_VZALLOC, undef)
fi

AC_MSG_CHECKING([kernel source for ether_addr_equal])
if test -f $ksourcedir/include/linux/etherdevice.h && \
   $GREP -q 'ether_addr_equal' $ksourcedir/include/linux/etherdevice.h; then
	AC_MSG_RESULT(yes)
	AC_SUBST(HAVE_ETHER_ADDR_EQUAL, define)
else
	AC_MSG_RESULT(no)
	AC_SUBST(HAVE_ETHER_ADDR_EQUAL, undef)
fi

AC_MSG_CHECKING([kernel source for nla_put_be64])
if test -f $ksourcedir/include/net/netlink.h && \
   $GREP -q 'nla_put_be64' $ksourcedir/include/net/netlink.h; then
	AC_MSG_RESULT(yes)
	AC_SUBST(HAVE_NLA_PUT_BE64, define)
else
	AC_MSG_RESULT(no)
	AC_SUBST(HAVE_NLA_PUT_BE64, undef)
fi

AC_MSG_CHECKING([kernel source for portid in nl_info])
if test -f $ksourcedir/include/linux/netlink.h && \
   $AWK '/^struct netlink_skb_parms/ {for(i=1; i<=5; i++) {getline; print}}' $ksourcedir/include/linux/netlink.h | $GREP -q 'portid;'; then
	AC_MSG_RESULT(yes)
	AC_SUBST(HAVE_NL_INFO_PORTID, define)
else
	AC_MSG_RESULT(no)
	AC_SUBST(HAVE_NL_INFO_PORTID, undef)
fi

AC_MSG_CHECKING([kernel source for netlink_dump_start args])
if test -f $ksourcedir/include/linux/netlink.h && \
   $AWK '/netlink_dump_start/ {for(i=1; i<=4; i++) {getline; print}}' $ksourcedir/include/linux/netlink.h | $GREP -q 'done.*;'; then
	AC_MSG_RESULT(5 args)
	AC_SUBST(HAVE_NETLINK_DUMP_START_ARGS, 5)
elif test -f $ksourcedir/include/linux/netlink.h && \
   $AWK '/netlink_dump_start/ {for(i=1; i<=4; i++) {getline; print}}' $ksourcedir/include/linux/netlink.h | $GREP -q 'min_dump_alloc.*;'; then
	AC_MSG_RESULT(6 args)
	AC_SUBST(HAVE_NETLINK_DUMP_START_ARGS, 6)
else
	AC_MSG_RESULT(4 args)
	AC_SUBST(HAVE_NETLINK_DUMP_START_ARGS, 4)
fi

AC_MSG_CHECKING([kernel source for ns_capable])
if test -f $ksourcedir/include/linux/capability.h && \
   $GREP -q 'ns_capable' $ksourcedir/include/linux/capability.h; then
	AC_MSG_RESULT(yes)
	AC_SUBST(HAVE_NS_CAPABLE, define)
else
	AC_MSG_RESULT(no)
	AC_SUBST(HAVE_NS_CAPABLE, undef)
fi

AC_MSG_CHECKING([kernel source for nfnl_lock per subsys])
if test -f $ksourcedir/include/linux/netfilter/nfnetlink.h && \
   $GREP -q 'nfnl_lock.* subsys_id' $ksourcedir/include/linux/netfilter/nfnetlink.h; then
	AC_MSG_RESULT(yes)
	AC_SUBST(HAVE_NFNL_LOCK_SUBSYS, define)
else
	AC_MSG_RESULT(no)
	AC_SUBST(HAVE_NFNL_LOCK_SUBSYS, undef)
fi

AC_MSG_CHECKING([kernel source for export.h])
if test -f $ksourcedir/include/linux/export.h; then
	AC_MSG_RESULT(yes)
	AC_SUBST(HAVE_EXPORT_H, define)
else
	AC_MSG_RESULT(no)
	AC_SUBST(HAVE_EXPORT_H, undef)
fi

AC_MSG_CHECKING([kernel source for ipv6_skip_exthdr args])
if test -f $ksourcedir/include/net/ipv6.h && \
   $AWK '/ipv6_skip_exthdr/ {getline; print}' $ksourcedir/include/net/ipv6.h | $GREP -q 'frag_offp'; then
	AC_MSG_RESULT(4 args)
	AC_SUBST(HAVE_IPV6_SKIP_EXTHDR_ARGS, 4)
else
	AC_MSG_RESULT(3 args)
	AC_SUBST(HAVE_IPV6_SKIP_EXTHDR_ARGS, 3)
fi

AC_MSG_CHECKING([kernel source for bool checkentry function prototype])
if test -f $ksourcedir/net/netfilter/xt_state.c && \
   $GREP -q 'bool state_mt_check' $ksourcedir/net/netfilter/xt_state.c; then
	AC_MSG_RESULT(yes)
	AC_SUBST(HAVE_CHECKENTRY_BOOL, define)
else
	AC_MSG_RESULT(no)
	AC_SUBST(HAVE_CHECKENTRY_BOOL, undef)
fi

AC_MSG_CHECKING([kernel source for old struct xt_target_param])
if test -f $ksourcedir/net/netfilter/xt_TCPMSS.c && \
   $GREP -q 'const struct xt_target_param' $ksourcedir/net/netfilter/xt_TCPMSS.c; then
	AC_MSG_RESULT(yes)
	AC_SUBST(HAVE_XT_TARGET_PARAM, define)
else
	AC_MSG_RESULT(no)
	AC_SUBST(HAVE_XT_TARGET_PARAM, undef)
fi

AC_MSG_CHECKING([kernel source for id in struct pernet_operations])
if test -f $ksourcedir/include/net/net_namespace.h && \
   $AWK '/struct pernet_operations/ {for(i=1; i<=6; i++) {getline; print}}' $ksourcedir/include/net/net_namespace.h | $GREP -q 'int \*id;'; then
	AC_MSG_RESULT(yes)
	AC_SUBST(HAVE_NET_OPS_ID, define)
else
	AC_MSG_RESULT(no)
	AC_SUBST(HAVE_NET_OPS_ID, undef)
fi

AC_MSG_CHECKING([kernel source for user_ns in struct net])
if test -f $ksourcedir/include/net/net_namespace.h && \
   $AWK '/^struct net \{/ {for(i=1; i<=20; i++) {getline; print}}' $ksourcedir/include/net/net_namespace.h | $GREP -q 'user_ns'; then
	AC_MSG_RESULT(yes)
	AC_SUBST(HAVE_USER_NS_IN_STRUCT_NET, define)
else
	AC_MSG_RESULT(no)
	AC_SUBST(HAVE_USER_NS_IN_STRUCT_NET, undef)
fi

AC_MSG_CHECKING([kernel source for rbtree_postorder_for_each_entry_safe])
if test -f $ksourcedir/include/linux/rbtree.h && \
   $GREP -q 'rbtree_postorder_for_each_entry_safe' $ksourcedir/include/linux/rbtree.h; then
	AC_MSG_RESULT(yes)
	AC_SUBST(HAVE_RBTREE_POSTORDER_FOR_EACH_ENTRY_SAFE, define)
else
	AC_MSG_RESULT(no)
	AC_SUBST(HAVE_RBTREE_POSTORDER_FOR_EACH_ENTRY_SAFE, undef)
fi

AC_MSG_CHECKING([kernel source for struct net_generic])
if test -f $ksourcedir/include/net/netns/generic.h && \
   $GREP -q 'struct net_generic' $ksourcedir/include/net/netns/generic.h; then
	AC_MSG_RESULT(yes)
else
	AC_MSG_RESULT(no)
	AC_MSG_ERROR([Netns support is required in the Linux kernel tree])
fi
fi

dnl Checks for compiler characteristics.
dnl Check extra warning flags except
dnl	-Wconversion		-> we need it
dnl	-Wunreachable-code	-> fails with ntoh*
dnl	-Wpointer-arith		-> limbnl uses it
dnl	-Wsign-conversion	-> libmnl
if test "x$enable_debug" = "xyes"
then
AX_CFLAGS_GCC_OPTION(-Waggregate-return)
AX_CFLAGS_GCC_OPTION(-Wbad-function-cast)
AX_CFLAGS_GCC_OPTION(-Wcast-align)
AX_CFLAGS_GCC_OPTION(-Wcast-qual)
AX_CFLAGS_GCC_OPTION(-Werror)
AX_CFLAGS_GCC_OPTION(-Wextra)
AX_CFLAGS_GCC_OPTION(-Wfloat-equal)
AX_CFLAGS_GCC_OPTION(-Wformat=2)
AX_CFLAGS_GCC_OPTION(-Wjump-misses-init)
AX_CFLAGS_GCC_OPTION(-Winit-self)
AX_CFLAGS_GCC_OPTION(-Winline)
AX_CFLAGS_GCC_OPTION(-Wlogical-op)
AX_CFLAGS_GCC_OPTION(-Wmissing-declarations)
AX_CFLAGS_GCC_OPTION(-Wmissing-format-attribute)
AX_CFLAGS_GCC_OPTION(-Wmissing-prototypes)
AX_CFLAGS_GCC_OPTION(-Wnested-externs)
AX_CFLAGS_GCC_OPTION(-Wno-missing-field-initializers)
AX_CFLAGS_GCC_OPTION(-Wold-style-definition)
AX_CFLAGS_GCC_OPTION(-Woverlength-strings)
AX_CFLAGS_GCC_OPTION(-Wpacked)
AX_CFLAGS_GCC_OPTION(-Wredundant-decls)
AX_CFLAGS_GCC_OPTION(-Wrwrite-strings)
AX_CFLAGS_GCC_OPTION(-Wshadow)
AX_CFLAGS_GCC_OPTION(-Wsign-compare)
AX_CFLAGS_GCC_OPTION(-Wstrict-prototypes)
AX_CFLAGS_GCC_OPTION(-Wswitch-default)
AX_CFLAGS_GCC_OPTION(-Wundef)
AX_CFLAGS_GCC_OPTION(-Wuninitialized)
AX_CFLAGS_GCC_OPTION(-Wunused)
AX_CFLAGS_GCC_OPTION(-Wvla)
AX_CFLAGS_GCC_OPTION(-Wwrite-strings)
fi
dnl Checks for library functions.

dnl Generate output
AC_CONFIG_FILES([Makefile include/libipset/Makefile
	lib/Makefile lib/libipset.pc src/Makefile
	kernel/include/linux/netfilter/ipset/ip_set_compat.h])
AC_OUTPUT

dnl Summary
AC_MSG_RESULT([])
AC_MSG_RESULT([$PACKAGE userspace tool configuration:])
if test "x$enable_settype_modules" != "xyes"; then
	AC_MSG_RESULT([    Dynamic module loading: disabled])
else
	AC_MSG_RESULT([    Dynamic module loading: enabled])
fi
IPSET_ALL_MODULES="`ls ${srcdir}/lib/ipset_*.c|sed -e 's/^.*lib\///' -e 's/\.c$//'`"
AC_MSG_RESULT([    Static modules:])
if test "x$SETTYPE_MODLIST" = "x"; then
	for mod in $IPSET_ALL_MODULES; do
		AC_MSG_RESULT([        ${mod}])
	done
	AC_MSG_RESULT([    Dynamic modules:])
elif echo $SETTYPE_MODLIST | grep "all" >/dev/null; then
	AC_MSG_RESULT([    Dynamic modules:])
	for mod in $IPSET_ALL_MODULES; do
		AC_MSG_RESULT([        ${mod}])
	done
else
	for mod in $IPSET_ALL_MODULES; do
		if echo $SETTYPE_MODLIST | grep $mod >/dev/null; then
			:
		else
			AC_MSG_RESULT([        ${mod}])
		fi
	done
	AC_MSG_RESULT([    Dynamic modules:])
	for mod in $IPSET_ALL_MODULES; do
		if echo $SETTYPE_MODLIST | grep $mod >/dev/null; then
			AC_MSG_RESULT([        ${mod}])
		fi
	done
fi