| blob | 8f4fafff47d2e2be9fcd2b5b067f798021e2f0b0 |
1 dnl acinclude.m4 -- Extra macros needed for GNU make.
2 dnl
3 dnl Automake will incorporate this into its generated aclocal.m4.
5 dnl ---------------------------------------------------------------------------
6 dnl Got this from the lynx 2.8 distribution.
7 dnl by T.E.Dickey <dickey@clark.net>
8 dnl and Jim Spath <jspath@mail.bcpl.lib.md.us>
9 dnl and Philippe De Muyter <phdm@macqel.be>
10 dnl
11 dnl Created: 1997/1/28
12 dnl Updated: 1997/12/23
13 dnl ---------------------------------------------------------------------------
14 dnl After checking for functions in the default $LIBS, make a further check
15 dnl for the functions that are netlib-related (these aren't always in the
16 dnl libc, etc., and have to be handled specially because there are conflicting
17 dnl and broken implementations.
18 dnl Common library requirements (in order):
19 dnl -lresolv -lsocket -lnsl
20 dnl -lnsl -lsocket
21 dnl -lsocket
22 dnl -lbsd
23 AC_DEFUN([CF_NETLIBS],[
24 cf_test_netlibs=no
25 AC_MSG_CHECKING(for network libraries)
26 AC_CACHE_VAL(cf_cv_netlibs,[
27 AC_MSG_RESULT(working...)
28 cf_cv_netlibs=""
29 cf_test_netlibs=yes
30 AC_CHECK_FUNCS(gethostname,,[
31 CF_RECHECK_FUNC(gethostname,nsl,cf_cv_netlibs,[
32 CF_RECHECK_FUNC(gethostname,socket,cf_cv_netlibs)])])
33 #
34 # FIXME: sequent needs this library (i.e., -lsocket -linet -lnsl), but
35 # I don't know the entrypoints - 97/7/22 TD
36 AC_CHECK_LIB(inet,main,cf_cv_netlibs="-linet $cf_cv_netlibs")
37 #
38 if test "$ac_cv_func_lsocket" != no ; then
39 AC_CHECK_FUNCS(socket,,[
40 CF_RECHECK_FUNC(socket,socket,cf_cv_netlibs,[
41 CF_RECHECK_FUNC(socket,bsd,cf_cv_netlibs)])])
42 fi
43 #
44 AC_CHECK_FUNCS(gethostbyname,,[
45 CF_RECHECK_FUNC(gethostbyname,nsl,cf_cv_netlibs)])
46 #
47 AC_CHECK_FUNCS(strcasecmp,,[
48 CF_RECHECK_FUNC(strcasecmp,resolv,cf_cv_netlibs)])
49 ])
50 LIBS="$LIBS $cf_cv_netlibs"
51 test $cf_test_netlibs = no && echo "$cf_cv_netlibs" >&AC_FD_MSG
52 ])dnl
53 dnl ---------------------------------------------------------------------------
54 dnl Re-check on a function to see if we can pick it up by adding a library.
55 dnl $1 = function to check
56 dnl $2 = library to check in
57 dnl $3 = environment to update (e.g., $LIBS)
58 dnl $4 = what to do if this fails
59 dnl
60 dnl This uses 'unset' if the shell happens to support it, but leaves the
61 dnl configuration variable set to 'unknown' if not. This is a little better
62 dnl than the normal autoconf test, which gives misleading results if a test
63 dnl for the function is made (e.g., with AC_CHECK_FUNC) after this macro is
64 dnl used (autoconf does not distinguish between a null token and one that is
65 dnl set to 'no').
66 AC_DEFUN([CF_RECHECK_FUNC],[
67 AC_CHECK_LIB($2,$1,[
68 CF_UPPER(cf_tr_func,$1)
69 AC_DEFINE_UNQUOTED(HAVE_$cf_tr_func)
70 ac_cv_func_$1=yes
71 $3="-l$2 [$]$3"],[
72 ac_cv_func_$1=unknown
73 unset ac_cv_func_$1 2>/dev/null
74 $4],
75 [[$]$3])
76 ])dnl
77 dnl ---------------------------------------------------------------------------
78 dnl Make an uppercase version of a variable
79 dnl $1=uppercase($2)
80 AC_DEFUN([CF_UPPER],
81 [
82 changequote(,)dnl
83 $1=`echo $2 | tr '[a-z]' '[A-Z]'`
84 changequote([,])dnl
85 ])dnl
87 dnl ---------------------------------------------------------------------------
88 dnl Got this from the GNU fileutils 3.16r distribution
89 dnl by Paul Eggert <eggert@twinsun.com>
90 dnl ---------------------------------------------------------------------------
92 dnl The problem is that the default compilation flags in Solaris 2.6 won't
93 dnl let programs access large files; you need to tell the compiler that
94 dnl you actually want your programs to work on large files. For more
95 dnl details about this brain damage please see:
96 dnl http://www.sas.com/standards/large.file/x_open.20Mar96.html
98 AC_DEFUN(AC_LFS,
99 [dnl
100 # If available, prefer support for large files unless the user specified
101 # one of the CPPFLAGS, LDFLAGS, or LIBS variables.
102 AC_MSG_CHECKING(whether large file support needs explicit enabling)
103 ac_getconfs=''
104 ac_result=yes
105 ac_set=''
106 ac_shellvars='CPPFLAGS LDFLAGS LIBS'
107 for ac_shellvar in $ac_shellvars; do
108 case $ac_shellvar in
109 CPPFLAGS) ac_lfsvar=LFS_CFLAGS ;;
110 *) ac_lfsvar=LFS_$ac_shellvar ;;
111 esac
112 eval test '"${'$ac_shellvar'+set}"' = set && ac_set=$ac_shellvar
113 (getconf $ac_lfsvar) >/dev/null 2>&1 || { ac_result=no; break; }
114 ac_getconf=`getconf $ac_lfsvar`
115 ac_getconfs=$ac_getconfs$ac_getconf
116 eval ac_test_$ac_shellvar=\$ac_getconf
117 done
118 case "$ac_result$ac_getconfs" in
119 yes) ac_result=no ;;
120 esac
121 case "$ac_result$ac_set" in
122 yes?*) ac_result="yes, but $ac_set is already set, so use its settings"
123 esac
124 AC_MSG_RESULT($ac_result)
125 case $ac_result in
126 yes)
127 for ac_shellvar in $ac_shellvars; do
128 eval $ac_shellvar=\$ac_test_$ac_shellvar
129 done ;;
130 esac
131 ])
134 dnl ---------------------------------------------------------------------------
135 dnl From Paul Eggert <eggert@twinsun.com>
137 dnl Define HAVE_INTTYPES_H if <inttypes.h> exists,
138 dnl doesn't clash with <sys/types.h>, and declares uintmax_t.
140 AC_DEFUN(jm_AC_HEADER_INTTYPES_H,
141 [
142 if test x = y; then
143 dnl This code is deliberately never run via ./configure.
144 dnl FIXME: this is a gross hack to make autoheader put an entry
145 dnl for `HAVE_INTTYPES_H' in config.h.in.
146 AC_CHECK_FUNCS(INTTYPES_H)
147 fi
148 AC_CACHE_CHECK([for inttypes.h], jm_ac_cv_header_inttypes_h,
149 [AC_TRY_COMPILE(
150 [#include <sys/types.h>
151 #include <inttypes.h>],
152 [uintmax_t i = (uintmax_t) -1;],
153 jm_ac_cv_header_inttypes_h=yes,
154 jm_ac_cv_header_inttypes_h=no)])
155 if test $jm_ac_cv_header_inttypes_h = yes; then
156 ac_kludge=HAVE_INTTYPES_H
157 AC_DEFINE_UNQUOTED($ac_kludge)
158 fi
159 ])
162 dnl ---------------------------------------------------------------------------
163 dnl From Paul Eggert <eggert@twinsun.com>
165 AC_DEFUN(AC_STRUCT_ST_MTIM_NSEC,
166 [AC_CACHE_CHECK([for nanoseconds member of struct stat.st_mtim],
167 ac_cv_struct_st_mtim_nsec,
168 [ac_save_CPPFLAGS="$CPPFLAGS"
169 ac_cv_struct_st_mtim_nsec=no
170 # tv_nsec -- the usual case
171 # _tv_nsec -- Solaris 2.6, if
172 # (defined _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED == 1
173 # && !defined __EXTENSIONS__)
174 # st__tim.tv_nsec -- UnixWare 2.1.2
175 for ac_val in tv_nsec _tv_nsec st__tim.tv_nsec; do
176 CPPFLAGS="$ac_save_CPPFLAGS -DST_MTIM_NSEC=$ac_val"
177 AC_TRY_COMPILE([#include <sys/types.h>
178 #include <sys/stat.h>], [struct stat s; s.st_mtim.ST_MTIM_NSEC;],
179 [ac_cv_struct_st_mtim_nsec=$ac_val; break])
180 done
181 CPPFLAGS="$ac_save_CPPFLAGS"])
183 if test $ac_cv_struct_st_mtim_nsec != no; then
184 AC_DEFINE_UNQUOTED(ST_MTIM_NSEC, $ac_cv_struct_st_mtim_nsec)
185 fi
186 ]
187 )
189 dnl ---------------------------------------------------------------------------
190 dnl From Paul Eggert <eggert@twinsun.com>
192 dnl Define uintmax_t to `unsigned long' or `unsigned long long'
193 dnl if <inttypes.h> does not exist.
195 AC_DEFUN(jm_AC_TYPE_UINTMAX_T,
196 [
197 AC_REQUIRE([jm_AC_HEADER_INTTYPES_H])
198 if test $jm_ac_cv_header_inttypes_h = no; then
199 AC_CACHE_CHECK([for unsigned long long], ac_cv_type_unsigned_long_long,
200 [AC_TRY_COMPILE([],
201 [unsigned long long i = (unsigned long long) -1;],
202 ac_cv_type_unsigned_long_long=yes,
203 ac_cv_type_unsigned_long_long=no)])
204 if test $ac_cv_type_unsigned_long_long = yes; then
205 AC_DEFINE(uintmax_t, unsigned long long)
206 else
207 AC_DEFINE(uintmax_t, unsigned long)
208 fi
209 fi
210 ])
213 dnl ---------------------------------------------------------------------------
214 dnl From Steve Robbins <steve@nyongwa.montreal.qc.ca>
216 dnl From a proposed change made on the autoconf list on 2 Feb 1999
217 dnl http://sourceware.cygnus.com/ml/autoconf/1999-02/msg00001.html
218 dnl Patch for AIX 3.2 by Lars Hecking <lhecking@nmrc.ucc.ie> on 17 May 1999
220 AC_DEFUN(AC_FUNC_SELECT,
221 [AC_CHECK_FUNCS(select)
222 if test "$ac_cv_func_select" = yes; then
223 AC_CHECK_HEADERS(unistd.h sys/types.h sys/time.h sys/select.h sys/socket.h)
224 AC_MSG_CHECKING([argument types of select()])
225 AC_CACHE_VAL(ac_cv_type_fd_set_size_t,dnl
226 [AC_CACHE_VAL(ac_cv_type_fd_set,dnl
227 [for ac_cv_type_fd_set in 'fd_set' 'int' 'void'; do
228 for ac_cv_type_fd_set_size_t in 'int' 'size_t' 'unsigned long' 'unsigned'; do
229 for ac_type_timeval in 'struct timeval' 'const struct timeval'; do
230 AC_TRY_COMPILE(dnl
231 [#ifdef HAVE_SYS_TIME_H
232 #include <sys/time.h>
233 #endif
234 #ifdef HAVE_SYS_TYPES_H
235 #include <sys/types.h>
236 #endif
237 #ifdef HAVE_UNISTD_H
238 #include <unistd.h>
239 #endif
240 #ifdef HAVE_SYS_SELECT_H
241 #include <sys/select.h>
242 #endif
243 #ifdef HAVE_SYS_SOCKET_H
244 #include <sys/socket.h>
245 #endif],
246 [#ifdef __STDC__
247 extern select ($ac_cv_type_fd_set_size_t,
248 $ac_cv_type_fd_set *, $ac_cv_type_fd_set *, $ac_cv_type_fd_set *,
249 $ac_type_timeval *);
250 #else
251 extern select ();
252 $ac_cv_type_fd_set_size_t s;
253 $ac_cv_type_fd_set *p;
254 $ac_type_timeval *t;
255 #endif],
256 [ac_found=yes ; break 3],ac_found=no)
257 done
258 done
259 done
260 ])dnl AC_CACHE_VAL
261 ])dnl AC_CACHE_VAL
262 if test "$ac_found" = no; then
263 AC_MSG_ERROR([can't determine argument types])
264 fi
266 AC_MSG_RESULT([select($ac_cv_type_fd_set_size_t,$ac_cv_type_fd_set *,...)])
267 AC_DEFINE_UNQUOTED(fd_set_size_t, $ac_cv_type_fd_set_size_t)
268 ac_cast=
269 if test "$ac_cv_type_fd_set" != fd_set; then
270 # Arguments 2-4 are not fd_set. Some weirdo systems use fd_set type for
271 # FD_SET macros, but insist that you cast the argument to select. I don't
272 # understand why that might be, but it means we cannot define fd_set.
273 AC_EGREP_CPP(dnl
274 changequote(<<,>>)dnl
275 <<(^|[^a-zA-Z_0-9])fd_set[^a-zA-Z_0-9]>>dnl
276 changequote([,]),dnl
277 [#ifdef HAVE_SYS_TIME_H
278 #include <sys/time.h>
279 #endif
280 #ifdef HAVE_SYS_TYPES_H
281 #include <sys/types.h>
282 #endif
283 #ifdef HAVE_UNISTD_H
284 #include <unistd.h>
285 #endif
286 #ifdef HAVE_SYS_SELECT_H
287 #include <sys/select.h>
288 #endif
289 #ifdef HAVE_SYS_SOCKET_H
290 #include <sys/socket.h>
291 #endif],dnl
292 # We found fd_set type in a header, need special cast
293 ac_cast="($ac_cv_type_fd_set *)",dnl
294 # No fd_set type; it is safe to define it
295 AC_DEFINE_UNQUOTED(fd_set,$ac_cv_type_fd_set))
296 fi
297 AC_DEFINE_UNQUOTED(SELECT_FD_SET_CAST,$ac_cast)
298 fi
299 ])