]>
Commit | Line | Data |
---|---|---|
064af421 BP |
1 | # -*- autoconf -*- |
2 | ||
c0a0ac4f | 3 | # Copyright (c) 2008, 2009, 2010, 2011 Nicira Networks. |
064af421 | 4 | # |
a14bc59f BP |
5 | # Licensed under the Apache License, Version 2.0 (the "License"); |
6 | # you may not use this file except in compliance with the License. | |
7 | # You may obtain a copy of the License at: | |
064af421 | 8 | # |
a14bc59f BP |
9 | # http://www.apache.org/licenses/LICENSE-2.0 |
10 | # | |
11 | # Unless required by applicable law or agreed to in writing, software | |
12 | # distributed under the License is distributed on an "AS IS" BASIS, | |
13 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
14 | # See the License for the specific language governing permissions and | |
15 | # limitations under the License. | |
064af421 | 16 | |
a64e37a1 BP |
17 | dnl OVS_ENABLE_WERROR |
18 | AC_DEFUN([OVS_ENABLE_WERROR], | |
19 | [AC_ARG_ENABLE( | |
20 | [Werror], | |
21 | [AC_HELP_STRING([--enable-Werror], [Add -Werror to CFLAGS])], | |
22 | [], [enable_Werror=no]) | |
23 | AC_CONFIG_COMMANDS_PRE( | |
24 | [if test "X$enable_Werror" = Xyes; then | |
25 | CFLAGS="$CFLAGS -Werror" | |
26 | fi])]) | |
27 | ||
e3438006 | 28 | dnl OVS_CHECK_LINUX |
064af421 BP |
29 | dnl |
30 | dnl Configure linux kernel source tree | |
e3438006 | 31 | AC_DEFUN([OVS_CHECK_LINUX], [ |
8a2d6596 BP |
32 | AC_ARG_WITH([linux], |
33 | [AC_HELP_STRING([--with-linux=/path/to/linux], | |
34 | [Specify the Linux kernel build directory])]) | |
35 | AC_ARG_WITH([linux-source], | |
36 | [AC_HELP_STRING([--with-linux-source=/path/to/linux-source], | |
37 | [Specify the Linux kernel source directory | |
f5fb5de6 | 38 | (usually figured out automatically from build |
8a2d6596 BP |
39 | directory)])]) |
40 | ||
41 | # Deprecated equivalents to --with-linux, --with-linux-source. | |
42 | AC_ARG_WITH([l26]) | |
43 | AC_ARG_WITH([l26-source]) | |
44 | ||
45 | if test X"$with_linux" != X; then | |
46 | KBUILD=$with_linux | |
47 | elif test X"$with_l26" != X; then | |
48 | KBUILD=$with_l26 | |
49 | AC_MSG_WARN([--with-l26 is deprecated, please use --with-linux instead]) | |
50 | else | |
51 | KBUILD= | |
52 | fi | |
53 | ||
54 | if test X"$KBUILD" != X; then | |
55 | if test X"$with_linux_source" != X; then | |
56 | KSRC=$with_linux_source | |
57 | elif test X"$with_l26_source" != X; then | |
58 | KSRC=$with_l26_source | |
59 | AC_MSG_WARN([--with-l26-source is deprecated, please use --with-linux-source instead]) | |
60 | fi | |
61 | elif test X"$with_linux_source" != X || test X"$with_l26_source" != X; then | |
62 | AC_MSG_ERROR([Linux source directory may not be specified without Linux build directory]) | |
63 | fi | |
64 | ||
e3438006 BP |
65 | if test -n "$KBUILD"; then |
66 | KBUILD=`eval echo "$KBUILD"` | |
67 | case $KBUILD in | |
0b6d72fc | 68 | /*) ;; |
e3438006 | 69 | *) KBUILD=`pwd`/$KBUILD ;; |
0b6d72fc | 70 | esac |
064af421 | 71 | |
7c9e113b BP |
72 | # The build directory is what the user provided. |
73 | # Make sure that it exists. | |
8a2d6596 | 74 | AC_MSG_CHECKING([for Linux build directory]) |
e3438006 BP |
75 | if test -d "$KBUILD"; then |
76 | AC_MSG_RESULT([$KBUILD]) | |
77 | AC_SUBST(KBUILD) | |
064af421 BP |
78 | else |
79 | AC_MSG_RESULT([no]) | |
e3438006 | 80 | AC_ERROR([source dir $KBUILD doesn't exist]) |
064af421 BP |
81 | fi |
82 | ||
7c9e113b | 83 | # Debian breaks kernel headers into "source" header and "build" headers. |
e3438006 | 84 | # We want the source headers, but $KBUILD gives us the "build" headers. |
7c9e113b | 85 | # Use heuristics to find the source headers. |
8a2d6596 | 86 | AC_MSG_CHECKING([for Linux source directory]) |
e3438006 BP |
87 | if test -n "$KSRC"; then |
88 | KSRC=`eval echo "$KSRC"` | |
89 | case $KSRC in | |
f5fb5de6 | 90 | /*) ;; |
e3438006 | 91 | *) KSRC=`pwd`/$KSRC ;; |
b57f675c | 92 | esac |
e3438006 BP |
93 | if test ! -e $KSRC/include/linux/kernel.h; then |
94 | AC_MSG_ERROR([$KSRC is not a kernel source directory)]) | |
f5fb5de6 BP |
95 | fi |
96 | else | |
e3438006 BP |
97 | KSRC=$KBUILD |
98 | if test ! -e $KSRC/include/linux/kernel.h; then | |
99 | case `echo "$KBUILD" | sed 's,/*$,,'` in # ( | |
f5fb5de6 | 100 | */build) |
e3438006 | 101 | KSRC=`echo "$KBUILD" | sed 's,/build/*$,/source,'` |
f5fb5de6 BP |
102 | ;; # ( |
103 | *) | |
e3438006 | 104 | KSRC=`(cd $KBUILD && pwd -P) | sed 's,-[[^-]]*$,-common,'` |
f5fb5de6 BP |
105 | ;; |
106 | esac | |
107 | fi | |
e3438006 | 108 | if test ! -e $KSRC/include/linux/kernel.h; then |
8a2d6596 | 109 | AC_MSG_ERROR([cannot find source directory (please use --with-linux-source)]) |
7c9e113b BP |
110 | fi |
111 | fi | |
e3438006 | 112 | AC_MSG_RESULT([$KSRC]) |
7c9e113b BP |
113 | |
114 | AC_MSG_CHECKING([for kernel version]) | |
e3438006 BP |
115 | patchlevel=`sed -n 's/^PATCHLEVEL = //p' "$KSRC/Makefile"` |
116 | sublevel=`sed -n 's/^SUBLEVEL = //p' "$KSRC/Makefile"` | |
7c9e113b BP |
117 | if test -z "$patchlevel" || test -z "$sublevel"; then |
118 | AC_ERROR([cannot determine kernel version]) | |
119 | fi | |
064af421 | 120 | AC_MSG_RESULT([2.$patchlevel.$sublevel]) |
7c9e113b | 121 | if test "2.$patchlevel" != '2.6'; then |
e3438006 BP |
122 | if test "$KBUILD" = "$KSRC"; then |
123 | AC_ERROR([Linux kernel in $KBUILD is not version 2.6]) | |
7c9e113b | 124 | else |
e3438006 | 125 | AC_ERROR([Linux kernel in build tree $KBUILD (source tree $KSRC) is not version 2.6]) |
7c9e113b | 126 | fi |
064af421 | 127 | fi |
e3438006 BP |
128 | if test ! -e "$KBUILD"/include/linux/version.h || \ |
129 | (test ! -e "$KBUILD"/include/linux/autoconf.h && \ | |
130 | test ! -e "$KBUILD"/include/generated/autoconf.h); then | |
131 | AC_MSG_ERROR([Linux kernel source in $KBUILD is not configured]) | |
064af421 | 132 | fi |
e3438006 | 133 | OVS_CHECK_LINUX_COMPAT |
064af421 | 134 | fi |
e3438006 | 135 | AM_CONDITIONAL(LINUX_ENABLED, test -n "$KBUILD") |
064af421 BP |
136 | ]) |
137 | ||
8828e5c7 | 138 | dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH]) |
064af421 BP |
139 | dnl |
140 | dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH. | |
8828e5c7 BP |
141 | dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with |
142 | dnl <REGEX> translated to uppercase. | |
064af421 BP |
143 | AC_DEFUN([OVS_GREP_IFELSE], [ |
144 | AC_MSG_CHECKING([whether $2 matches in $1]) | |
7507ec48 JG |
145 | if test -f $1; then |
146 | grep '$2' $1 >/dev/null 2>&1 | |
147 | status=$? | |
148 | case $status in | |
149 | 0) | |
150 | AC_MSG_RESULT([yes]) | |
8828e5c7 | 151 | m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3]) |
7507ec48 JG |
152 | ;; |
153 | 1) | |
154 | AC_MSG_RESULT([no]) | |
155 | $4 | |
156 | ;; | |
157 | *) | |
158 | AC_MSG_ERROR([grep exited with status $status]) | |
159 | ;; | |
160 | esac | |
161 | else | |
162 | AC_MSG_RESULT([file not found]) | |
163 | $4 | |
164 | fi | |
064af421 BP |
165 | ]) |
166 | ||
167 | dnl OVS_DEFINE(NAME) | |
168 | dnl | |
169 | dnl Defines NAME to 1 in kcompat.h. | |
170 | AC_DEFUN([OVS_DEFINE], [ | |
171 | echo '#define $1 1' >> datapath/linux-2.6/kcompat.h.new | |
172 | ]) | |
173 | ||
064af421 | 174 | AC_DEFUN([OVS_CHECK_LOG2_H], [ |
e3438006 BP |
175 | AC_MSG_CHECKING([for $KSRC/include/linux/log2.h]) |
176 | if test -e $KSRC/include/linux/log2.h; then | |
064af421 BP |
177 | AC_MSG_RESULT([yes]) |
178 | OVS_DEFINE([HAVE_LOG2_H]) | |
179 | else | |
180 | AC_MSG_RESULT([no]) | |
181 | fi | |
182 | ]) | |
183 | ||
e3438006 | 184 | dnl OVS_CHECK_LINUX_COMPAT |
064af421 BP |
185 | dnl |
186 | dnl Runs various Autoconf checks on the Linux 2.6 kernel source in | |
e3438006 BP |
187 | dnl the directory in $KBUILD. |
188 | AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [ | |
064af421 BP |
189 | rm -f datapath/linux-2.6/kcompat.h.new |
190 | mkdir -p datapath/linux-2.6 | |
191 | : > datapath/linux-2.6/kcompat.h.new | |
4aa13c0c | 192 | |
e3438006 | 193 | OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,], |
25fb3596 JG |
194 | [OVS_DEFINE([HAVE_CSUM_COPY_DBG])]) |
195 | ||
e3438006 | 196 | OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST]) |
4aa13c0c | 197 | |
e3438006 | 198 | OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast]) |
4aa13c0c | 199 | |
e3438006 BP |
200 | OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro]) |
201 | OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats]) | |
202 | OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu]) | |
4aa13c0c | 203 | |
e3438006 BP |
204 | OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [], |
205 | [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], | |
cf6cb3a2 JG |
206 | [rcu_read_lock_held])]) |
207 | ||
6a33828d BP |
208 | # Check for the proto_data_valid member in struct sk_buff. The [^@] |
209 | # is necessary because some versions of this header remove the | |
210 | # member but retain the kerneldoc comment that describes it (which | |
211 | # starts with @). The brackets must be doubled because of m4 | |
212 | # quoting rules. | |
e3438006 | 213 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid], |
6a33828d | 214 | [OVS_DEFINE([HAVE_PROTO_DATA_VALID])]) |
e3438006 | 215 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [raw], |
4aa13c0c | 216 | [OVS_DEFINE([HAVE_MAC_RAW])]) |
e3438006 | 217 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(], |
85444c3f | 218 | [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])]) |
e3438006 | 219 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], |
8828e5c7 | 220 | [skb_copy_from_linear_data_offset]) |
e3438006 BP |
221 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head]) |
222 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_transport_header], | |
4aa13c0c | 223 | [OVS_DEFINE([HAVE_SKBUFF_HEADER_HELPERS])]) |
e3438006 | 224 | OVS_GREP_IFELSE([$KSRC/include/linux/icmpv6.h], [icmp6_hdr], |
d31f1109 | 225 | [OVS_DEFINE([HAVE_ICMP6_HDR])]) |
e3438006 | 226 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro], |
4aa13c0c | 227 | [OVS_DEFINE([HAVE_SKB_WARN_LRO])]) |
e3438006 | 228 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb]) |
4aa13c0c | 229 | |
e3438006 BP |
230 | OVS_GREP_IFELSE([$KSRC/include/linux/string.h], [kmemdup], [], |
231 | [OVS_GREP_IFELSE([$KSRC/include/linux/slab.h], [kmemdup])]) | |
4aa13c0c | 232 | |
e3438006 | 233 | OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool], |
4aa13c0c | 234 | [OVS_DEFINE([HAVE_BOOL_TYPE])]) |
e3438006 | 235 | OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum], |
e215ebca | 236 | [OVS_DEFINE([HAVE_CSUM_TYPES])]) |
4aa13c0c | 237 | |
e3438006 BP |
238 | OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4]) |
239 | OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold]) | |
4aa13c0c | 240 | |
e3438006 BP |
241 | OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [NLA_NUL_STRING]) |
242 | OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16]) | |
243 | OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested]) | |
4aa13c0c | 244 | |
e3438006 | 245 | OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64]) |
1269f7ae | 246 | |
e3438006 | 247 | OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [ADD_ALL_VLANS_CMD], |
431488e6 BP |
248 | [OVS_DEFINE([HAVE_VLAN_BUG_WORKAROUND])]) |
249 | ||
064af421 | 250 | OVS_CHECK_LOG2_H |
4aa13c0c | 251 | |
064af421 BP |
252 | if cmp -s datapath/linux-2.6/kcompat.h.new \ |
253 | datapath/linux-2.6/kcompat.h >/dev/null 2>&1; then | |
254 | rm datapath/linux-2.6/kcompat.h.new | |
255 | else | |
256 | mv datapath/linux-2.6/kcompat.h.new datapath/linux-2.6/kcompat.h | |
257 | fi | |
258 | ]) | |
259 | ||
260 | dnl Checks for net/if_packet.h. | |
261 | AC_DEFUN([OVS_CHECK_IF_PACKET], | |
262 | [AC_CHECK_HEADER([net/if_packet.h], | |
263 | [HAVE_IF_PACKET=yes], | |
264 | [HAVE_IF_PACKET=no]) | |
265 | AM_CONDITIONAL([HAVE_IF_PACKET], [test "$HAVE_IF_PACKET" = yes]) | |
266 | if test "$HAVE_IF_PACKET" = yes; then | |
267 | AC_DEFINE([HAVE_IF_PACKET], [1], | |
268 | [Define to 1 if net/if_packet.h is available.]) | |
269 | fi]) | |
270 | ||
e50097d2 BP |
271 | dnl Checks for buggy strtok_r. |
272 | dnl | |
273 | dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling | |
274 | dnl with optimization that can cause segfaults: | |
275 | dnl | |
276 | dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614. | |
277 | AC_DEFUN([OVS_CHECK_STRTOK_R], | |
278 | [AC_CACHE_CHECK( | |
279 | [whether strtok_r macro segfaults on some inputs], | |
280 | [ovs_cv_strtok_r_bug], | |
281 | [AC_RUN_IFELSE( | |
282 | [AC_LANG_PROGRAM([#include <stdio.h> | |
283 | #include <string.h> | |
284 | ], | |
285 | [[char string[] = ":::"; | |
286 | char *save_ptr = (char *) 0xc0ffee; | |
287 | char *token1, *token2; | |
288 | token1 = strtok_r(string, ":", &save_ptr); | |
289 | token2 = strtok_r(NULL, ":", &save_ptr); | |
5819a7cd | 290 | freopen ("/dev/null", "w", stdout); |
e50097d2 BP |
291 | printf ("%s %s\n", token1, token2); |
292 | return 0; | |
293 | ]])], | |
294 | [ovs_cv_strtok_r_bug=no], | |
295 | [ovs_cv_strtok_r_bug=yes], | |
296 | [ovs_cv_strtok_r_bug=yes])]) | |
297 | if test $ovs_cv_strtok_r_bug = yes; then | |
298 | AC_DEFINE([HAVE_STRTOK_R_BUG], [1], | |
299 | [Define if strtok_r macro segfaults on some inputs]) | |
300 | fi | |
301 | ]) | |
302 | ||
064af421 BP |
303 | dnl ---------------------------------------------------------------------- |
304 | dnl These macros are from GNU PSPP, with the following original license: | |
305 | dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc. | |
306 | dnl This file is free software; the Free Software Foundation | |
307 | dnl gives unlimited permission to copy and/or distribute it, | |
308 | dnl with or without modifications, as long as this notice is preserved. | |
309 | ||
310 | dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED]) | |
311 | dnl Check whether the given C compiler OPTION is accepted. | |
312 | dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED. | |
313 | AC_DEFUN([OVS_CHECK_CC_OPTION], | |
314 | [ | |
315 | m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-], [_])])dnl | |
316 | AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name], | |
317 | [ovs_save_CFLAGS="$CFLAGS" | |
318 | CFLAGS="$CFLAGS $1" | |
319 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,)], [ovs_cv_name[]=yes], [ovs_cv_name[]=no]) | |
320 | CFLAGS="$ovs_save_CFLAGS"]) | |
321 | if test $ovs_cv_name = yes; then | |
83f6c050 | 322 | m4_if([$2], [], [:], [$2]) |
064af421 BP |
323 | else |
324 | m4_if([$3], [], [:], [$3]) | |
325 | fi | |
326 | ]) | |
327 | ||
328 | dnl OVS_ENABLE_OPTION([OPTION]) | |
329 | dnl Check whether the given C compiler OPTION is accepted. | |
d161c099 | 330 | dnl If so, add it to WARNING_FLAGS. |
064af421 BP |
331 | dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement]) |
332 | AC_DEFUN([OVS_ENABLE_OPTION], | |
d161c099 BP |
333 | [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"]) |
334 | AC_SUBST([WARNING_FLAGS])]) | |
c72e245a BP |
335 | |
336 | dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL]) | |
337 | dnl Check whether the given C compiler OPTION is accepted. | |
338 | dnl If so, enable the given Automake CONDITIONAL. | |
339 | ||
340 | dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED]) | |
341 | AC_DEFUN([OVS_CONDITIONAL_CC_OPTION], | |
342 | [OVS_CHECK_CC_OPTION( | |
343 | [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no]) | |
344 | AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])]) | |
064af421 | 345 | dnl ---------------------------------------------------------------------- |
ed2d4f6a BP |
346 | |
347 | dnl Check for too-old XenServer. | |
348 | AC_DEFUN([OVS_CHECK_XENSERVER_VERSION], | |
349 | [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion], | |
350 | [if test -e /etc/redhat-release; then | |
351 | ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release` | |
352 | fi | |
353 | if test -z "$ovs_cv_xsversion"; then | |
354 | ovs_cv_xsversion=none | |
355 | fi]) | |
356 | case $ovs_cv_xsversion in | |
357 | none) | |
358 | ;; | |
359 | ||
360 | [[1-9]][[0-9]]* | dnl XenServer 10 or later | |
361 | [[6-9]]* | dnl XenServer 6 or later | |
362 | 5.[[7-9]]* | dnl XenServer 5.7 or later | |
363 | 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later | |
364 | 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later | |
365 | 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later | |
366 | ;; | |
367 | ||
368 | *) | |
369 | 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.)]) | |
370 | ;; | |
371 | esac]) | |
29d935d6 BP |
372 | |
373 | dnl OVS_MAKE_HAS_IF([if-true], [if-false]) | |
374 | dnl | |
375 | dnl Checks whether make has the GNU make $(if condition,then,else) extension. | |
376 | dnl Runs 'if-true' if so, 'if-false' otherwise. | |
377 | AC_DEFUN([OVS_MAKE_HAS_IF], | |
378 | [AC_CACHE_CHECK( | |
379 | [whether ${MAKE-make} has GNU make \$(if) extension], | |
380 | [ovs_cv_gnu_make_if], | |
381 | [cat <<'EOF' > conftest.mk | |
382 | conftest.out: | |
383 | echo $(if x,y,z) > conftest.out | |
384 | .PHONY: all | |
385 | EOF | |
386 | rm -f conftest.out | |
387 | AS_ECHO(["$as_me:$LINENO: invoking ${MAKE-make} -f conftest.mk all:"]) >&AS_MESSAGE_LOG_FD 2>&1 | |
388 | ${MAKE-make} -f conftest.mk conftest.out >&AS_MESSAGE_LOG_FD 2>&1 | |
389 | AS_ECHO(["$as_me:$LINENO: conftest.out contains:"]) >&AS_MESSAGE_LOG_FD 2>&1 | |
390 | cat conftest.out >&AS_MESSAGE_LOG_FD 2>&1 | |
391 | result=`cat conftest.out` | |
392 | rm -f conftest.mk conftest.out | |
393 | if test "X$result" = "Xy"; then | |
394 | ovs_cv_gnu_make_if=yes | |
395 | else | |
396 | ovs_cv_gnu_make_if=no | |
397 | fi]) | |
398 | AS_IF([test $ovs_cv_gnu_make_if = yes], [$1], [$2])]) | |
399 | ||
400 | dnl OVS_ENABLE_SPARSE | |
401 | AC_DEFUN([OVS_ENABLE_SPARSE], | |
402 | [OVS_MAKE_HAS_IF( | |
403 | [AC_CONFIG_COMMANDS_PRE( | |
404 | [: ${SPARSE=sparse} | |
405 | AC_SUBST([SPARSE]) | |
406 | CC='$(if $(C),REAL_CC="'"$CC"'" CHECK="$(SPARSE) -I $(top_srcdir)/include/sparse" cgcc,'"$CC"')'])])]) |