Add support for the various new APIs in 2.2 and 2.3, in particular, netv2.
[util-vserver.git] / configure.ac
1 dnl $Id$
2
3 dnl Copyright (C) 2003,2004 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
4 dnl  
5 dnl This program is free software; you can redistribute it and/or modify
6 dnl it under the terms of the GNU General Public License as published by
7 dnl the Free Software Foundation; either version 2, or (at your option)
8 dnl any later version.
9 dnl  
10 dnl This program is distributed in the hope that it will be useful,
11 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
12 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 dnl GNU General Public License for more details.
14 dnl  
15 dnl You should have received a copy of the GNU General Public License
16 dnl along with this program; if not, write to the Free Software
17 dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18 dnl  
19 dnl  
20 dnl As a special exception to the GNU General Public License, if you
21 dnl distribute this file as part of a program that contains a configuration
22 dnl script generated by Autoconf, you may include it under the same
23 dnl distribution terms that you use for the rest of that program.
24 dnl  
25
26 AC_PREREQ(2.57)
27 AC_INIT(util-vserver, 0.30.213, vserver@list.linux-vserver.org)
28 AC_CONFIG_SRCDIR([src/capchroot.c])
29 AC_CONFIG_HEADER([config.h])
30
31 AM_INIT_AUTOMAKE([1.9 gnits dist-bzip2 subdir-objects])
32 AM_MAINTAINER_MODE
33
34 AC_CANONICAL_BUILD
35 AC_CANONICAL_HOST
36
37 AC_SUBST(GPG_KEY, "0xFFD316AC53ACA43A!")
38
39 # Checks for programs.
40 AC_PROG_CXX
41 AC_PROG_CC
42 AC_PROG_INSTALL
43 AC_PROG_LN_S
44 AM_PROG_CC_C_O
45 ENSC_CXXCOMPILER
46 ENSC_C99COMPILER
47
48 ENSC_SET_SEARCHPATH([$PATH:/sbin:/usr/sbin:/usr/local/sbin])
49 ENSC_PATHPROG_STANDARD_TOOLS
50
51 ENSC_PATHPROG(IP,        ip,,      [Usually, this tool is shipped in the 'iproute' or 'iproute2' package of your distribution])
52 ENSC_PATHPROG(IPTABLES,  iptables)
53 ENSC_PATHPROG(MODPROBE,  modprobe)
54 ENSC_PATHPROG(NAMEIF,    nameif)
55 ENSC_PATHPROG(NOHUP,     nohup)
56 ENSC_PATHPROG(RMMOD,     rmmod)
57 ENSC_PATHPROG(VCONFIG,   vconfig,, [See http://www.candelatech.com/~greear/vlan.html; usually this tool is shipped in the 'vconfig' or 'vlan' package of your distribution])
58 ENSC_PATHPROG(WGET,      wget)
59 ENSC_PATHPROG(FILE,      file,    [file])
60 ENSC_PATHPROG(GZIP,      gzip,    [gzip])
61 ENSC_PATHPROG(BZIP2,     bzip2,   [bzip2])
62 ENSC_PATHPROG(CPIO,      cpio,    [cpio])
63 ENSC_PATHPROG(RESTORE,   restore, [restore])
64 ENSC_PATHPROG(RSYNC,     rsync,   [rsync])
65 ENSC_PATHPROG(STRACE,    strace,  [strace])
66
67 ENSC_PATHPROG(DOXYGEN,   doxygen,  [:])
68 ENSC_PATHPROG(XSLTP,     xsltp,    [:])
69 ENSC_PATHPROG(XSLTPROC,  xsltproc, [:])
70
71
72 AM_CONDITIONAL(HAVE_XSLTP,    test "$XSLTP"    != ':')
73 AM_CONDITIONAL(HAVE_XSLTPROC, test "$XSLTPROC" != ':')
74
75 if test x"$prefix" = x/; then
76         prefix=
77 fi      
78
79 ENSC_CHECK_CC_FLAG([-std=c99 -Wall -pedantic -W])
80 ENSC_CHECK_CXX_FLAG([-ansi   -Wall -pedantic -W -fmessage-length=0])
81
82 AC_MSG_CHECKING([whether to enable extra optimizations])
83 AC_ARG_ENABLE([extra-optimizations],
84               [AC_HELP_STRING([--disable-extra-optimizations],
85                               [disable certain extra optimizations (default: no)])],
86               [case "$enableval" in
87                   (yes) use_extra_optimizations=1;;
88                   (no)  use_extra_optimizations=;;
89                   (*)   AC_MSG_ERROR(['$enableval' is not a valid value for '--disable-extra-optimizations']);;
90                esac],
91               [use_extra_optimizations=1])
92
93 if test x"$use_extra_optimizations" = x; then
94         AC_MSG_RESULT(no)
95 else
96         AC_MSG_RESULT(yes)
97         ENSC_CHECK_CC_FLAG([-funit-at-a-time])
98         ENSC_CHECK_CXX_FLAG([-funit-at-a-time])
99 fi
100
101 AC_MSG_CHECKING([whether to enable debug-code in library])
102 AC_ARG_ENABLE([lib-debug],
103               [AC_HELP_STRING([--enable-lib-debug],
104                               [enable additional debug code in library (default: no)])],
105               [case "$enableval" in
106                   (yes) use_lib_debug=1;;
107                   (no)  use_lib_debug=;;
108                   (*)   AC_MSG_ERROR(['$enableval' is not a valid value for '--enable-lib-debug']);;
109                esac],
110               [ use_lib_debug= ])
111
112 if test x"$use_lib_debug" = x; then
113         AC_SUBST(LIB_DEBUG_CPPFLAGS, [-DNDEBUG])
114         AC_MSG_RESULT(no)
115 else
116         AC_SUBST(LIB_DEBUG_CPPFLAGS, [])
117         AC_MSG_RESULT(yes)
118 fi
119
120 AC_MSG_CHECKING([whether to enable expensive tests])
121 AC_ARG_ENABLE([expensive-tests],
122               [AC_HELP_STRING([--enable-expensive-tests],
123                               [disable tests which might be expensive on some systems (default: no)])],
124               [case "$enableval" in
125                  (yes|no)  use_expensive_tests=$enableval;;
126                  (*)       AC_MSG_ERROR(['$enableval' is not a valid value for '--enable-expensive-tests']);;
127                esac],
128               [ use_expensive_tests=no ])
129 AC_MSG_RESULT($use_expensive_tests)
130
131 AC_SUBST(ENSC_USE_EXPENSIVE_TESTS, "$use_expensive_tests")
132
133
134 ENSC_CHECK_PERSONALITY_FLAGS
135
136 AC_ARG_VAR(CC, [The C compiler])
137
138 ENSC_INITRDDIR(initrddir)
139 ENSC_RELEASE(RELEASE_CPPFLAGS)
140
141 # HACK: This needs to be before ENSC_DIETLIBC_NEED_COMPAT, or the alternative
142 # syscalls will never be enabled for glibc.
143 ENSC_SYSCALLNR(vserver,273,[lib/syscall-fallback.h])
144 ENSC_SYSCALL
145
146 dnl ###########################
147 dnl
148 dnl {some dietlibc related tests
149 dnl
150
151 case $host_cpu in
152         (i*86|athlon)   min_diet_ver=0.25;;
153         (ia64|hppa*)    min_diet_ver=0.29;;
154         (sparc*)        min_diet_ver=0.30;;
155         (x86_64)        min_diet_ver=0.27;;
156         (*)             min_diet_ver=0.28;;
157 esac
158
159 ENSC_ENABLE_DIETLIBC(USE_DIETLIBC, [$min_diet_ver])
160
161 if test x"$ensc_have_dietlibc" = xno; then
162         AC_MSG_WARN([***                                                         ***])
163         AC_MSG_WARN([*** it is strongly recommended to link util-vserver against ***])
164         AC_MSG_WARN([*** dietlibc;  glibc's NSS functions are very unreliable in ***])
165         AC_MSG_WARN([*** chroot() environments,  so you have to  expect problems ***])
166         AC_MSG_WARN([*** there.                                                  ***])
167         AC_MSG_WARN([***                                                         ***])
168         AM_CONDITIONAL(USE_DIETLIBC_COMPAT, false)
169 else
170         # HACK: libtool does not have cmdline options to build only
171         # dynamic libraries; this can be done with the
172         # '--disable-static' ./configure option only.  As our static
173         # libraries will be build with dietlibc, we have to do set
174         # this option which is evaluated by 'AC_PROG_LIBTOOL'
175         # below.  Therefore, this macro must not be called earlier.
176         enable_static=no
177
178         ENSC_DIETLIBC_NEED_COMPAT(USE_DIETLIBC_COMPAT)
179 fi
180
181 AM_CONDITIONAL(ENSC_USE_DIETLIBC, test x"$ensc_have_dietlibc" = xyes)
182 AM_CONDITIONAL(ENSC_USE_GLIBC,    true)
183
184 # HACK: see comments at 'enable_static' above
185 AC_PROG_LIBTOOL
186 dnl
187 dnl dietlibc stuff ends here}
188 dnl
189 dnl ##########################
190
191
192 ENSC_UV_VROOTDIR(vserverdir)
193 ENSC_CHANGELOG
194
195
196 dnl ##########################
197 dnl
198 dnl {Check whether to use external kernel headers
199 dnl
200 AC_MSG_CHECKING([whether to use internal kernel headers])
201 AC_ARG_ENABLE([internal-headers],
202               [AC_HELP_STRING([--disable-internal-headers],
203                               [use vserver specific headers from the kernel instead of the shipped versions (default: no)])],
204               [case "$enableval" in
205                   (yes|no) ;;
206                   (*)      AC_MSG_ERROR(['$i' is not a supported value for '--disable-internal-headers']);;
207                esac],
208               [enable_internal_headers=yes])
209
210 AM_CONDITIONAL(ENSC_ENABLE_INTERNAL_HEADERS, [test x"$enable_internal_headers" = xyes])
211 AC_MSG_RESULT([$enable_internal_headers])
212 dnl
213 dnl the check regarding external kernel headers ends here}
214 dnl
215 dnl ##########################
216
217 dnl ##########################
218 dnl
219 dnl {Check for the APIs to be used
220 dnl
221 AH_TEMPLATE(VC_ENABLE_API_COMPAT,   [Enable support for compatibility syscall API])
222 AH_TEMPLATE(VC_ENABLE_API_LEGACY,   [Enable support for old, /proc parsing API])
223 AH_TEMPLATE(VC_ENABLE_API_V11,      [Enable support for API of vserver 1.1.x])
224 AH_TEMPLATE(VC_ENABLE_API_FSCOMPAT, [Enable support for filesystem compatibility API])
225 AH_TEMPLATE(VC_ENABLE_API_V13OBS,   [Enable support for some obsoleted API of vserver 1.3.x])
226 AH_TEMPLATE(VC_ENABLE_API_V13,      [Enable support for API of vserver 1.3.x])
227 AH_TEMPLATE(VC_ENABLE_API_NET,      [Enable support for network context API])
228 AH_TEMPLATE(VC_ENABLE_API_V21,      [Enable support for API of vserver 2.1.x])
229 AH_TEMPLATE(VC_ENABLE_API_V22,      [Enable support for API of vserver 2.2.x])
230 AH_TEMPLATE(VC_ENABLE_API_V23,      [Enable support for API of vserver 2.3.x])
231 AH_TEMPLATE(VC_ENABLE_API_NETV2,    [Enable support for new networking API])
232 AH_TEMPLATE(VC_ENABLE_API_OLDPROC,  [Enable API for a backward compatible /proc parsing])
233 AH_TEMPLATE(VC_ENABLE_API_OLDUTS,   [Enable API for a backward compatible uts handling])
234
235 AC_MSG_CHECKING([for supported APIs])
236 AC_ARG_ENABLE([apis],
237               [AC_HELP_STRING([--enable-apis=APIS],
238                               [enable support for the given apis; possible values are: legacy,compat,v11,fscompat,v13obs,v13,net,v21,v22,v23,netv2 ALL,NOLEGACY (default: v13,net,v21,v22,v23,netv2)])],
239               [],
240               [enable_apis=v13,net,v21,v22,v23,netv2])
241
242 test x"$enable_apis" != xALL      || enable_apis='legacy,compat,v11,fscompat,v13obs,v13,net,v21,v22,v23,netv2'
243 test x"$enable_apis" != xNOLEGACY || enable_apis='compat,v11,fscompat,v13,net,v21,v22,v23,netv2'
244 enable_api_oldproc=
245 enable_api_olduts=
246 old_IFS=$IFS
247 IFS=,;
248
249 for i in $enable_apis; do
250         case "$i" in
251                 (compat)        AC_DEFINE(VC_ENABLE_API_COMPAT,   1)
252                                 enable_api_oldproc=${enable_api_oldproc:-1}
253                                 enable_api_olduts=${enable_api_olduts:-1}
254                                 ;;
255                 (legacy)        AC_DEFINE(VC_ENABLE_API_LEGACY,   1)
256                                 enable_api_oldproc=${enable_api_oldproc:-1}
257                                 enable_api_olduts=${enable_api_olduts:-1}
258                                 ;;
259                 (v11)           AC_DEFINE(VC_ENABLE_API_V11,      1)
260                                 enable_api_oldproc=${enable_api_oldproc:-1}
261                                 enable_api_olduts=${enable_api_olduts:-1}
262                                 ;;
263                 (fscompat)      AC_DEFINE(VC_ENABLE_API_FSCOMPAT, 1);;
264                 (v13obs)        AC_DEFINE(VC_ENABLE_API_V13OBS,   1)
265                                 AC_DEFINE(VC_ENABLE_API_V13,      1);;
266                 (v13)           AC_DEFINE(VC_ENABLE_API_V13,      1);;
267                 (net)           AC_DEFINE(VC_ENABLE_API_NET,      1);;
268                 (v21)           AC_DEFINE(VC_ENABLE_API_V21,      1);;
269                 (v22)           AC_DEFINE(VC_ENABLE_API_V22,      1);;
270                 (v23)           AC_DEFINE(VC_ENABLE_API_V23,      1);;
271                 (netv2)         AC_DEFINE(VC_ENABLE_API_NETV2,    1);;
272                 (oldproc)       enable_api_oldproc=2;;
273                 (olduts)        enable_api_olduts=2;;
274                 (*)             AC_MSG_ERROR(['$i' is not a supported API]);;
275         esac
276 done
277 IFS=$old_IFS
278 if test x"$enable_api_oldproc" != x; then
279         AC_DEFINE(VC_ENABLE_API_OLDPROC, 1)
280         test x"$enable_api_oldproc" != x2 && enable_apis="$enable_apis,oldproc"
281 fi
282 if test x"$enable_api_olduts" != x; then
283         AC_DEFINE(VC_ENABLE_API_OLDUTS, 1)
284         test x"$enable_api_olduts" != x2 && enable_apis="$enable_apis,olduts"
285 fi
286 AC_MSG_RESULT([$enable_apis])
287 dnl
288 dnl the check for used APIs ends here}
289 dnl
290 dnl ##########################
291
292
293 ENSC_CHECK_EXT2FS_HEADER
294 AC_CHECK_FUNCS([vserver])
295 AC_CHECK_DECLS(MS_MOVE,,,[#include <linux/fs.h>])
296 AC_CHECK_TYPES(xid_t,,,[#include <sys/types.h>])
297 AC_CHECK_TYPES(nid_t,,,[#include <sys/types.h>])
298
299 AC_CHECK_HEADERS([sys/capability.h])
300
301 dnl vlogin might need -lutil
302 if test x"$ensc_have_dietlibc" = xno; then
303         AC_CHECK_FUNC([openpty],, [AC_CHECK_LIB([util], [openpty],, [AC_MSG_ERROR([
304 ****
305 **** openpty could not be found
306 ****])])])
307 fi
308
309
310 dnl ########################
311 dnl
312 dnl {check for beecrypt
313 dnl
314 if test x"$ensc_cv_c99_c99compiler" = xyes; then
315         ensc_have_beecrypt=yes
316
317         if test x"$ensc_have_beecrypt" = xyes; then
318                 AC_CHECK_HEADER([beecrypt/beecrypt.h], [ : ],
319                                 [ ensc_have_beecrypt=no ])
320         fi
321                         
322         if test x"$ensc_have_beecrypt" = xyes; then
323                 AC_CHECK_LIB(beecrypt, hashFunctionContextInit, [ : ],
324                              [ ensc_have_beecrypt=no ])
325         fi
326
327         if test x"$ensc_have_beecrypt" != xyes; then
328                 AC_MSG_WARN([
329 ****
330 **** 'beecrypt' could not be found;
331 **** this will disable the build of 'vhashify'
332 ****])
333         fi
334 else
335         ensc_have_beecrypt=no
336 fi
337
338 AM_CONDITIONAL(ENSC_HAVE_BEECRYPT, test x"$ensc_have_beecrypt" = xyes)
339 AM_CONDITIONAL(ENSC_CAN_BEECRYPT_WITH_DIETLIBC, false)
340 dnl
341 dnl beecrypt stuff ends here}
342 dnl
343 dnl ########################
344
345
346 dnl Check what distro this is, use Gentoo initscripts if appropriate
347 AC_MSG_CHECKING([for host initscripts])
348 AC_ARG_WITH(initscripts, AC_HELP_STRING([--with-initscripts=TYPE], [force host initscripts; valid values are 'gentoo' and 'sysv' (default: guess)]), [
349         case "$withval" in
350         gentoo) ensc_with_init=gentoo;;
351         sysv)   ensc_with_init=sysv;;
352         *)      AC_MSG_ERROR([invalid initscripts value, only gentoo and sysv are supported]);;
353         esac
354         ], [
355         if test -e /etc/gentoo-release; then
356                 ensc_with_init=gentoo
357         else
358                 ensc_with_init=sysv
359         fi
360         ])
361 AC_MSG_RESULT([$ensc_with_init])
362 AM_CONDITIONAL(HAVE_GENTOO_INIT, test x"$ensc_with_init" = xgentoo)
363 AM_CONDITIONAL(HAVE_SYSV_INIT, test x"$ensc_with_init" = xsysv)
364
365
366 dnl BIG HACK! Do some autodetection here!
367 AC_DEFINE(UTMP_GID, [22], [The utmp gid-number])
368
369 if false; then
370         AC_DEFINE(HAVE_GROWING_STACK, [1], [Define to 1 if the stack is on growing addresses])
371 fi
372
373 AC_DEFINE(_FILE_OFFSET_BITS, [64], [Use 64bit interface for filesystem operations])
374
375 dnl ########################
376 dnl
377 dnl {The final info-page
378 dnl
379 ensc_cxx_affected=" (affected: vbuild, vcheck)"
380 ensc_c99_affected=" (affected: vunify, vcopy, vhashify, vdlimit)"
381 ensc_diet_msg=" (you have been warned)"
382 ensc_diet_version_msg=" ($ensc_version_dietlibc)"
383 ensc_diet_compat_msg=" (using -lcompat)"
384 test x"$ensc_cv_cxx_cxxcompiler"    = xno || ensc_cxx_affected=
385 test x"$ensc_cv_c99_c99compiler"    = xno || ensc_c99_affected=
386 test x"$ensc_have_dietlibc"         = xno || ensc_diet_msg=
387 test x"$ensc_version_dietlibc"     != x   || ensc_diet_version_msg=
388 test x"$ensc_have_dietlibc$ensc_cv_c_dietlibc_compat" = xyesyes || ensc_diet_compat_msg=
389
390 AH_BOTTOM([#include "compat.h"
391 ])
392 AC_CONFIG_COMMANDS_PRE([
393                         FEATURES_TXT="\
394 Features:
395                        CC: $CC, $($CC   --version | sed -e '1p;d')
396                       CXX: $CXX, $($CXX --version | sed -e '1p;d')
397                  CPPFLAGS: '$CPPFLAGS'
398                    CFLAGS: '$CFLAGS'
399                  CXXFLAGS: '$CXXFLAGS'
400                build/host: $build/$host
401              Use dietlibc: $ensc_have_dietlibc$ensc_diet_version_msg$ensc_diet_msg$ensc_diet_compat_msg
402        Build C++ programs: $ensc_cv_cxx_cxxcompiler$ensc_cxx_affected
403        Build C99 programs: $ensc_cv_c99_c99compiler$ensc_c99_affected
404            Available APIs: $enable_apis
405             ext2fs Source: $ensc_cv_test_ext2fs_header
406     syscall(2) invocation: $with_syscall
407       vserver(2) syscall#: $ensc_cv_value_syscall_vserver
408    
409 Paths:
410                    prefix: $prefix
411         sysconf-Directory: $sysconfdir
412             cfg-Directory: $sysconfdir/vservers
413          initrd-Directory: $initrddir
414        pkgstate-Directory: $localstatedir/run/vservers
415           vserver-Rootdir: $vserverdir
416 "
417                         echo "$FEATURES_TXT" >FEATURES.txt
418                         ])
419 dnl
420 dnl final info-page ends here}
421 dnl
422 dnl ########################
423
424 AC_CONFIG_FILES([util-vserver.spec Makefile distrib/Makefile lib/apidoc/Doxyfile])
425 AC_OUTPUT
426
427 AC_MSG_NOTICE([
428
429 $PACKAGE_STRING
430
431 $FEATURES_TXT])