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
|
dnl Process this file with autoconf to produce a configure script.
AC_INIT(forwback.c)
AC_CONFIG_HEADER(defines.h)
dnl Checks for programs.
AC_PROG_CC
AC_ISC_POSIX
AC_PROG_GCC_TRADITIONAL
AC_PROG_INSTALL
dnl Checks for libraries.
AC_CHECK_LIB(xcurses, initscr, [have_xcurses=yes], [have_xcurses=no])
AC_CHECK_LIB(ncurses, initscr, [have_ncurses=yes], [have_ncurses=no])
AC_CHECK_LIB(curses, initscr, [have_curses=yes], [have_curses=no])
AC_CHECK_LIB(termcap, tgetent, [have_termcap=yes], [have_termcap=no])
AC_CHECK_LIB(termlib, tgetent, [have_termlib=yes], [have_termlib=no])
dnl Regular expressions (regcmp) are in -lgen on Solaris 2,
dnl and in -lintl on SCO Unix.
AC_CHECK_LIB(gen, regcmp)
AC_CHECK_LIB(intl, regcmp)
AC_CHECK_LIB(PW, regcmp)
dnl Checks for terminal libraries
AC_MSG_CHECKING(for working terminal libraries)
TERMLIBS=
dnl Check for systems where curses is broken.
curses_broken=0
if test x`uname -s` = "xHP-UX" >/dev/null 2>&1; then
if test x`uname -r` = "xB.11.00" >/dev/null 2>&1; then
curses_broken=1
fi
fi
if test $curses_broken = 0; then
dnl -- Try xcurses.
if test "x$TERMLIBS" = x; then
if test $have_xcurses = yes; then
TERMLIBS="-lxcurses"
SAVE_LIBS=$LIBS
LIBS="$LIBS $TERMLIBS"
AC_TRY_LINK(, [tgetent(0,0); tgetflag(0); tgetnum(0); tgetstr(0,0);],
[termok=yes], [termok=no])
LIBS=$SAVE_LIBS
if test $termok = no; then TERMLIBS=""; fi
fi
fi
dnl -- Try ncurses.
if test "x$TERMLIBS" = x; then
if test $have_ncurses = yes; then
TERMLIBS="-lncurses"
SAVE_LIBS=$LIBS
LIBS="$LIBS $TERMLIBS"
AC_TRY_LINK(, [tgetent(0,0); tgetflag(0); tgetnum(0); tgetstr(0,0);],
[termok=yes], [termok=no])
LIBS=$SAVE_LIBS
if test $termok = no; then TERMLIBS=""; fi
fi
fi
dnl -- Try curses.
if test "x$TERMLIBS" = x; then
if test $have_curses = yes; then
TERMLIBS="-lcurses"
SAVE_LIBS=$LIBS
LIBS="$LIBS $TERMLIBS"
AC_TRY_LINK(, [tgetent(0,0); tgetflag(0); tgetnum(0); tgetstr(0,0);],
[termok=yes], [termok=no])
LIBS=$SAVE_LIBS
if test $termok = no; then TERMLIBS=""; fi
fi
fi
dnl -- Try curses & termcap.
if test "x$TERMLIBS" = x; then
if test $have_curses = yes; then
if test $have_termcap = yes; then
TERMLIBS="-lcurses -ltermcap"
SAVE_LIBS=$LIBS
LIBS="$LIBS $TERMLIBS"
AC_TRY_LINK(, [tgetent(0,0); tgetflag(0); tgetnum(0); tgetstr(0,0);],
[termok=yes], [termok=no])
LIBS=$SAVE_LIBS
if test $termok = no; then TERMLIBS=""; fi
fi
fi
fi
fi
dnl -- Try termcap.
if test "x$TERMLIBS" = x; then
if test $have_termcap = yes; then
TERMLIBS="-ltermcap"
SAVE_LIBS=$LIBS
LIBS="$LIBS $TERMLIBS"
AC_TRY_LINK(, [tgetent(0,0); tgetflag(0); tgetnum(0); tgetstr(0,0);],
[termok=yes], [termok=no])
LIBS=$SAVE_LIBS
if test $termok = no; then TERMLIBS=""; fi
fi
fi
dnl -- Try termlib.
if test "x$TERMLIBS" = x; then
if test $have_termlib = yes; then
TERMLIBS="-lcurses -ltermlib"
SAVE_LIBS=$LIBS
LIBS="$LIBS $TERMLIBS"
AC_TRY_LINK(, [tgetent(0,0); tgetflag(0); tgetnum(0); tgetstr(0,0);],
[termok=yes], [termok=no])
LIBS=$SAVE_LIBS
if test $termok = no; then TERMLIBS=""; fi
fi
fi
if test "x$TERMLIBS" = x; then
AC_MSG_RESULT(Cannot find terminal libraries - configure failed)
exit 1
fi
AC_MSG_RESULT(using $TERMLIBS)
LIBS="$LIBS $TERMLIBS"
dnl Checks for header files.
AC_CHECK_HEADERS(ctype.h errno.h fcntl.h limits.h stdio.h stdlib.h string.h termcap.h termio.h termios.h time.h unistd.h values.h sys/ioctl.h sys/stream.h sys/ptem.h)
dnl Checks for identifiers.
AC_TYPE_OFF_T
AC_MSG_CHECKING(for void)
AC_TRY_COMPILE(, [void *foo = 0;],
[AC_MSG_RESULT(yes); AC_DEFINE(HAVE_VOID)], [AC_MSG_RESULT(no)])
AC_MSG_CHECKING(for const)
AC_TRY_COMPILE(, [const int foo = 0;],
[AC_MSG_RESULT(yes); AC_DEFINE(HAVE_CONST)], [AC_MSG_RESULT(no)])
AC_MSG_CHECKING(for time_t)
AC_TRY_COMPILE([#include <time.h>], [time_t t = 0;],
[AC_MSG_RESULT(yes); AC_DEFINE(HAVE_TIME_T)], [AC_MSG_RESULT(no)])
dnl Checks for functions and external variables.
AC_TYPE_SIGNAL
AC_CHECK_FUNCS(memcpy popen _setjmp sigprocmask sigsetmask stat strchr strstr system)
dnl Some systems have termios.h but not the corresponding functions.
AC_CHECK_FUNC(tcgetattr, AC_DEFINE(HAVE_TERMIOS_FUNCS))
AC_MSG_CHECKING(for fileno)
AC_TRY_LINK([
#if HAVE_STDIO_H
#include <stdio.h>
#endif], [static int x; x = fileno(stdin);],
[AC_MSG_RESULT(yes); AC_DEFINE(HAVE_FILENO)], [AC_MSG_RESULT(no)])
AC_MSG_CHECKING(for strerror)
AC_TRY_LINK([
#if HAVE_STDIO_H
#include <stdio.h>
#endif
#if HAVE_STRING_H
#include <string.h>
#endif
#if HAVE_ERRNO_H
#include <errno.h>
#endif], [static char *x; x = strerror(0);],
[AC_MSG_RESULT(yes); AC_DEFINE(HAVE_STRERROR)], [AC_MSG_RESULT(no)])
AC_MSG_CHECKING(for sys_errlist)
AC_TRY_LINK(, [extern char *sys_errlist[]; static char **x; x = sys_errlist;],
[AC_MSG_RESULT(yes); AC_DEFINE(HAVE_SYS_ERRLIST)], [AC_MSG_RESULT(no)])
AC_MSG_CHECKING(for sigset_t)
AC_TRY_LINK([
#include <signal.h>
], [sigset_t s; s = 0;],
[AC_MSG_RESULT(yes); AC_DEFINE(HAVE_SIGSET_T)], [AC_MSG_RESULT(no)])
AC_MSG_CHECKING(for sigemptyset)
AC_TRY_LINK([
#include <signal.h>
], [sigset_t s; sigemptyset(&s);],
[AC_MSG_RESULT(yes); AC_DEFINE(HAVE_SIGEMPTYSET)], [AC_MSG_RESULT(no)])
have_errno=no
AC_MSG_CHECKING(for errno)
AC_TRY_LINK([
#if HAVE_ERRNO_H
#include <errno.h>
#endif], [static int x; x = errno;],
[AC_MSG_RESULT(yes - in errno.h); AC_DEFINE(HAVE_ERRNO) have_errno=yes])
if test $have_errno = no; then
AC_TRY_LINK([
#if HAVE_ERRNO_H
#include <errno.h>
#endif], [extern int errno; static int x; x = errno;],
[AC_MSG_RESULT(yes - must define); AC_DEFINE(HAVE_ERRNO) AC_DEFINE(MUST_DEFINE_ERRNO)],
[AC_MSG_RESULT(no)])
fi
AC_MSG_CHECKING(for locale)
AC_TRY_LINK([#include <locale.h>
#include <ctype.h>], [setlocale(LC_CTYPE,""); isprint(0); iscntrl(0);],
[AC_MSG_RESULT(yes); AC_DEFINE(HAVE_LOCALE)], [AC_MSG_RESULT(no)])
AC_MSG_CHECKING(for ctype functions)
AC_TRY_LINK([
#if HAVE_CTYPE_H
#include <ctype.h>
#endif], [static int x; x = isupper(x); x = tolower(x); x = toupper(x);],
[AC_MSG_RESULT(yes); AC_DEFINE(HAVE_UPPER_LOWER)], [AC_MSG_RESULT(no)])
dnl Checks for external variable ospeed in the termcap library.
have_ospeed=no
AC_MSG_CHECKING(termcap for ospeed)
AC_TRY_LINK([
#include <sys/types.h>
#if HAVE_TERMIOS_H
#include <termios.h>
#endif
#if HAVE_TERMCAP_H
#include <termcap.h>
#endif], [ospeed = 0;],
[AC_MSG_RESULT(yes - in termcap.h); AC_DEFINE(HAVE_OSPEED) have_ospeed=yes])
if test $have_ospeed = no; then
AC_TRY_LINK(, [extern short ospeed; ospeed = 0;],
[AC_MSG_RESULT(yes - must define); AC_DEFINE(HAVE_OSPEED) AC_DEFINE(MUST_DEFINE_OSPEED)],
[AC_MSG_RESULT(no)])
fi
dnl Checks for regular expression functions.
have_regex=no
have_posix_regex=unknown
AC_MSG_CHECKING(for regcomp)
WANT_REGEX=auto
AC_ARG_WITH(regex,
[ --with-regex={auto,pcre,posix,regcmp,re_comp,regcomp,regcomp-local} Select a regular expression library [auto]],
WANT_REGEX="$withval")
if test $have_regex = no; then
if test $WANT_REGEX = auto -o $WANT_REGEX = posix; then
dnl Some versions of Solaris have a regcomp() function, but it doesn't work!
dnl So we run a test program. If we're cross-compiling, do it the old way.
AC_TRY_RUN([
#include <sys/types.h>
#include <regex.h>
main() { regex_t r; regmatch_t rm; char *text = "xabcy";
if (regcomp(&r, "abc", 0)) exit(1);
if (regexec(&r, text, 1, &rm, 0)) exit(1);
#ifndef __WATCOMC__
if (rm.rm_so != 1) exit(1); /* check for correct offset */
#else
if (rm.rm_sp != text + 1) exit(1); /* check for correct offset */
#endif
exit(0); }],
have_posix_regex=yes, have_posix_regex=no, have_posix_regex=unknown)
if test $have_posix_regex = yes; then
AC_MSG_RESULT(using POSIX regcomp)
AC_DEFINE(HAVE_POSIX_REGCOMP)
have_regex=yes
elif test $have_posix_regex = unknown; then
AC_TRY_LINK([
#include <sys/types.h>
#include <regex.h>],
[regex_t *r; regfree(r);],
AC_MSG_RESULT(using POSIX regcomp)
AC_DEFINE(HAVE_POSIX_REGCOMP) have_regex=yes)
else
AC_MSG_RESULT(no)
fi
fi
fi
if test $have_regex = no; then
if test $WANT_REGEX = auto -o $WANT_REGEX = pcre; then
AC_CHECK_LIB(pcre, pcre_compile,
[AC_MSG_RESULT(using pcre); AC_DEFINE(HAVE_PCRE) LIBS="$LIBS -lpcre" have_regex=yes], [])
fi
fi
if test $have_regex = no; then
if test $WANT_REGEX = auto -o $WANT_REGEX = regcmp; then
AC_CHECK_FUNC(regcmp,
AC_MSG_RESULT(using regcmp); AC_DEFINE(HAVE_REGCMP) have_regex=yes)
fi
fi
if test $have_regex = no; then
if test $WANT_REGEX = auto -o $WANT_REGEX = regcomp; then
AC_TRY_LINK([
#include "regexp.h"], [regcomp("");],
AC_MSG_RESULT(using V8 regcomp); AC_DEFINE(HAVE_V8_REGCOMP) have_regex=yes)
fi
fi
if test $have_regex = no && test -f ${srcdir}/regexp.c; then
if test $WANT_REGEX = auto -o $WANT_REGEX = regcomp-local; then
AC_MSG_RESULT(using V8 regcomp -- local source); AC_DEFINE(HAVE_V8_REGCOMP) AC_DEFINE(HAVE_REGEXEC2) REGEX_O='regexp.$(O)' AC_SUBST(REGEX_O) have_regex=yes
fi
fi
if test $have_regex = no; then
if test $WANT_REGEX = auto -o $WANT_REGEX = re_comp; then
AC_MSG_RESULT(using re_comp); AC_CHECK_FUNC(re_comp, AC_DEFINE(HAVE_RE_COMP) have_regex=yes)
fi
fi
if test $have_regex = no; then
AC_MSG_RESULT(cannot find regular expression library); AC_DEFINE(NO_REGEX)
fi
AC_ARG_WITH(editor,
[ --with-editor=PROGRAM use PROGRAM as the default editor [vi]],
AC_DEFINE_UNQUOTED(EDIT_PGM, "$withval"))
AC_OUTPUT(Makefile)
|
