| 1 | dnl Process this file with autoconf to produce a configure script. |
| 2 | |
| 3 | AC_INIT(rlfe.c) |
| 4 | AC_CONFIG_HEADER(config.h) |
| 5 | VERSION=0.4 |
| 6 | AC_SUBST(VERSION) |
| 7 | |
| 8 | dnl |
| 9 | dnl Define some useful macros |
| 10 | dnl |
| 11 | AC_DEFUN([AC_PROGRAM_SOURCE], |
| 12 | [AC_REQUIRE([AC_PROG_CPP])AC_PROVIDE([$0])cat > conftest.c <<EOF |
| 13 | #include "confdefs.h" |
| 14 | [$1] |
| 15 | _CUT_HERE_ |
| 16 | [$2] |
| 17 | EOF |
| 18 | eval "$ac_cpp conftest.c 2>&5 | sed -e '1,/_CUT_HERE_/d' -e 's/ //g' > conftest.out" |
| 19 | . ./conftest.out |
| 20 | rm -f conftest* |
| 21 | ])dnl |
| 22 | dnl |
| 23 | define(AC_NOTE, |
| 24 | [echo "$1" 1>&AC_FD_MSG |
| 25 | ])dnl |
| 26 | |
| 27 | old_CFLAGS="$CFLAGS" |
| 28 | AC_PROG_CC |
| 29 | AC_PROG_CPP |
| 30 | AC_PROG_GCC_TRADITIONAL |
| 31 | AC_ISC_POSIX |
| 32 | |
| 33 | AC_TRY_RUN(main(){exit(0);},,[ |
| 34 | if test $CC != cc ; then |
| 35 | AC_NOTE(Your $CC failed - restarting with CC=cc) |
| 36 | AC_NOTE() |
| 37 | CC=cc |
| 38 | export CC |
| 39 | exec $0 $configure_args |
| 40 | fi |
| 41 | ]) |
| 42 | |
| 43 | AC_TRY_RUN(main(){exit(0);},, |
| 44 | exec 5>&2 |
| 45 | eval $ac_link |
| 46 | AC_NOTE(CC=$CC; CFLAGS=$CFLAGS; LIBS=$LIBS;) |
| 47 | AC_NOTE($ac_compile) |
| 48 | AC_MSG_ERROR(Can't run the compiler - sorry)) |
| 49 | |
| 50 | AC_TRY_RUN([ |
| 51 | main() |
| 52 | { |
| 53 | int __something_strange_(); |
| 54 | __something_strange_(0); |
| 55 | } |
| 56 | ],AC_MSG_ERROR(Your compiler does not set the exit status - sorry)) |
| 57 | |
| 58 | AC_PROG_AWK |
| 59 | |
| 60 | if test -f etc/toolcheck; then |
| 61 | AC_CHECKING(for buggy tools) |
| 62 | sh etc/toolcheck 1>&AC_FD_MSG |
| 63 | fi |
| 64 | |
| 65 | dnl |
| 66 | dnl **** special unix variants **** |
| 67 | dnl |
| 68 | |
| 69 | AC_CHECKING(for System V) |
| 70 | AC_TRY_COMPILE( |
| 71 | [#include <sys/types.h> |
| 72 | #include <signal.h> |
| 73 | #include <fcntl.h>], [int x = SIGCHLD | FNDELAY;], , AC_DEFINE(SYSV)) |
| 74 | |
| 75 | AC_CHECKING(for Solaris 2.x) |
| 76 | AC_EGREP_CPP(yes, |
| 77 | [#if defined(SVR4) && defined(sun) |
| 78 | yes |
| 79 | #endif |
| 80 | ], LIBS="$LIBS -lsocket -lnsl -lkstat") |
| 81 | |
| 82 | dnl |
| 83 | dnl **** select() **** |
| 84 | dnl |
| 85 | |
| 86 | AC_CHECKING(select) |
| 87 | AC_TRY_LINK(,[select(0, 0, 0, 0, 0);],, |
| 88 | LIBS="$LIBS -lnet -lnsl" |
| 89 | AC_CHECKING(select with $LIBS) |
| 90 | AC_TRY_LINK(,[select(0, 0, 0, 0, 0);],, |
| 91 | AC_MSG_ERROR(!!! no select - no screen)) |
| 92 | ) |
| 93 | dnl |
| 94 | dnl **** check the select implementation **** |
| 95 | dnl |
| 96 | |
| 97 | AC_CHECKING(select return value) |
| 98 | AC_TRY_RUN([ |
| 99 | #include <sys/types.h> |
| 100 | #include <sys/stat.h> |
| 101 | #include <fcntl.h> |
| 102 | |
| 103 | char *nam = "/tmp/conftest$$"; |
| 104 | |
| 105 | #ifdef NAMEDPIPE |
| 106 | |
| 107 | #ifndef O_NONBLOCK |
| 108 | #define O_NONBLOCK O_NDELAY |
| 109 | #endif |
| 110 | #ifndef S_IFIFO |
| 111 | #define S_IFIFO 0010000 |
| 112 | #endif |
| 113 | |
| 114 | |
| 115 | main() |
| 116 | { |
| 117 | #ifdef FD_SET |
| 118 | fd_set f; |
| 119 | #else |
| 120 | int f; |
| 121 | #endif |
| 122 | |
| 123 | #ifdef __FreeBSD__ |
| 124 | /* From Andrew A. Chernov (ache@astral.msk.su): |
| 125 | * opening RDWR fifo fails in BSD 4.4, but select return values are |
| 126 | * right. |
| 127 | */ |
| 128 | exit(0); |
| 129 | #endif |
| 130 | (void)alarm(5); |
| 131 | #ifdef POSIX |
| 132 | if (mkfifo(nam, 0777)) |
| 133 | #else |
| 134 | if (mknod(nam, S_IFIFO|0777, 0)) |
| 135 | #endif |
| 136 | exit(1); |
| 137 | close(0); |
| 138 | if (open(nam, O_RDWR | O_NONBLOCK)) |
| 139 | exit(1); |
| 140 | if (write(0, "TEST", 4) == -1) |
| 141 | exit(1); |
| 142 | |
| 143 | #else |
| 144 | |
| 145 | #include <sys/types.h> |
| 146 | #include <sys/socket.h> |
| 147 | #include <sys/un.h> |
| 148 | |
| 149 | main() |
| 150 | { |
| 151 | int s1, s2, l; |
| 152 | struct sockaddr_un a; |
| 153 | #ifdef FD_SET |
| 154 | fd_set f; |
| 155 | #else |
| 156 | int f; |
| 157 | #endif |
| 158 | |
| 159 | (void)alarm(5); |
| 160 | if ((s1 = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) |
| 161 | exit(1); |
| 162 | a.sun_family = AF_UNIX; |
| 163 | strcpy(a.sun_path, nam); |
| 164 | (void) unlink(nam); |
| 165 | if (bind(s1, (struct sockaddr *) &a, strlen(nam)+2) == -1) |
| 166 | exit(1); |
| 167 | if (listen(s1, 2)) |
| 168 | exit(1); |
| 169 | if (fork() == 0) |
| 170 | { |
| 171 | if ((s2 = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) |
| 172 | kill(getppid(), 3); |
| 173 | (void)connect(s2, (struct sockaddr *)&a, strlen(nam) + 2); |
| 174 | if (write(s2, "HELLO", 5) == -1) |
| 175 | kill(getppid(), 3); |
| 176 | exit(0); |
| 177 | } |
| 178 | l = sizeof(a); |
| 179 | close(0); |
| 180 | if (accept(s1, (struct sockaddr *)&a, &l)) |
| 181 | exit(1); |
| 182 | #endif |
| 183 | |
| 184 | |
| 185 | #ifdef FD_SET |
| 186 | FD_SET(0, &f); |
| 187 | #else |
| 188 | f = 1; |
| 189 | #endif |
| 190 | if (select(1, &f, 0, 0, 0) == -1) |
| 191 | exit(1); |
| 192 | if (select(1, &f, &f, 0, 0) != 2) |
| 193 | exit(1); |
| 194 | exit(0); |
| 195 | } |
| 196 | ],AC_NOTE(- select is ok), |
| 197 | AC_NOTE(- select can't count) AC_DEFINE(SELECT_BROKEN)) |
| 198 | |
| 199 | dnl |
| 200 | dnl **** termcap or terminfo **** |
| 201 | dnl |
| 202 | AC_CHECKING(for tgetent) |
| 203 | AC_TRY_LINK(,tgetent((char *)0, (char *)0);,, |
| 204 | olibs="$LIBS" |
| 205 | LIBS="-lcurses $olibs" |
| 206 | AC_CHECKING(libcurses) |
| 207 | AC_TRY_LINK(,[ |
| 208 | #ifdef __hpux |
| 209 | __sorry_hpux_libcurses_is_totally_broken_in_10_10(); |
| 210 | #else |
| 211 | tgetent((char *)0, (char *)0); |
| 212 | #endif |
| 213 | ],, |
| 214 | LIBS="-ltermcap $olibs" |
| 215 | AC_CHECKING(libtermcap) |
| 216 | AC_TRY_LINK(,tgetent((char *)0, (char *)0);,, |
| 217 | LIBS="-ltermlib $olibs" |
| 218 | AC_CHECKING(libtermlib) |
| 219 | AC_TRY_LINK(,tgetent((char *)0, (char *)0);,, |
| 220 | LIBS="-lncurses $olibs" |
| 221 | AC_CHECKING(libncurses) |
| 222 | AC_TRY_LINK(,tgetent((char *)0, (char *)0);,, |
| 223 | AC_MSG_ERROR(!!! no tgetent - no screen)))))) |
| 224 | |
| 225 | AC_TRY_RUN([ |
| 226 | main() |
| 227 | { |
| 228 | exit(strcmp(tgoto("%p1%d", 0, 1), "1") ? 0 : 1); |
| 229 | }], AC_NOTE(- you use the termcap database), |
| 230 | AC_NOTE(- you use the terminfo database) AC_DEFINE(TERMINFO)) |
| 231 | AC_CHECKING(ospeed) |
| 232 | AC_TRY_LINK(extern short ospeed;,ospeed=5;,,AC_DEFINE(NEED_OSPEED)) |
| 233 | |
| 234 | dnl |
| 235 | dnl **** PTY specific things **** |
| 236 | dnl |
| 237 | AC_CHECKING(for /dev/ptc) |
| 238 | if test -r /dev/ptc; then |
| 239 | AC_DEFINE(HAVE_DEV_PTC) |
| 240 | fi |
| 241 | |
| 242 | AC_CHECKING(for SVR4 ptys) |
| 243 | sysvr4ptys= |
| 244 | if test -c /dev/ptmx ; then |
| 245 | AC_TRY_LINK([],[ptsname(0);grantpt(0);unlockpt(0);],[AC_DEFINE(HAVE_SVR4_PTYS) |
| 246 | sysvr4ptys=1]) |
| 247 | fi |
| 248 | |
| 249 | AC_CHECK_FUNCS(getpt) |
| 250 | |
| 251 | dnl check for openpty() |
| 252 | if test -z "$sysvr4ptys"; then |
| 253 | AC_CHECK_FUNCS(openpty,, |
| 254 | [AC_CHECK_LIB(util,openpty, [AC_DEFINE(HAVE_OPENPTY)] [LIBS="$LIBS -lutil"])]) |
| 255 | fi |
| 256 | |
| 257 | AC_CHECKING(for ptyranges) |
| 258 | if test -d /dev/ptym ; then |
| 259 | pdir='/dev/ptym' |
| 260 | else |
| 261 | pdir='/dev' |
| 262 | fi |
| 263 | dnl SCO uses ptyp%d |
| 264 | AC_EGREP_CPP(yes, |
| 265 | [#ifdef M_UNIX |
| 266 | yes; |
| 267 | #endif |
| 268 | ], ptys=`echo /dev/ptyp??`, ptys=`echo $pdir/pty??`) |
| 269 | dnl if test -c /dev/ptyp19; then |
| 270 | dnl ptys=`echo /dev/ptyp??` |
| 271 | dnl else |
| 272 | dnl ptys=`echo $pdir/pty??` |
| 273 | dnl fi |
| 274 | if test "$ptys" != "$pdir/pty??" ; then |
| 275 | p0=`echo $ptys | tr ' ' '\012' | sed -e 's/^.*\(.\).$/\1/g' | sort -u | tr -d '\012'` |
| 276 | p1=`echo $ptys | tr ' ' '\012' | sed -e 's/^.*\(.\)$/\1/g' | sort -u | tr -d '\012'` |
| 277 | AC_DEFINE_UNQUOTED(PTYRANGE0,"$p0") |
| 278 | AC_DEFINE_UNQUOTED(PTYRANGE1,"$p1") |
| 279 | fi |
| 280 | |
| 281 | dnl **** pty mode/group handling **** |
| 282 | dnl |
| 283 | dnl support provided by Luke Mewburn <lm@rmit.edu.au>, 931222 |
| 284 | AC_ARG_WITH(pty-mode, [ --with-pty-mode=mode default mode for ptys], [ ptymode="${withval}" ]) |
| 285 | AC_ARG_WITH(pty-group, [ --with-pty-group=group default group for ptys], [ ptygrp="${withval}" ]) |
| 286 | test -n "$ptymode" || ptymode=0620 |
| 287 | if test -n "$ptygrp" ; then |
| 288 | AC_DEFINE_UNQUOTED(PTYMODE, $ptymode) |
| 289 | AC_DEFINE_UNQUOTED(PTYGROUP,$ptygrp) |
| 290 | else |
| 291 | |
| 292 | AC_CHECKING(default tty permissions/group) |
| 293 | rm -f conftest_grp |
| 294 | AC_TRY_RUN([ |
| 295 | #include <sys/types.h> |
| 296 | #include <sys/stat.h> |
| 297 | #include <stdio.h> |
| 298 | main() |
| 299 | { |
| 300 | struct stat sb; |
| 301 | char *x,*ttyname(); |
| 302 | int om, m; |
| 303 | FILE *fp; |
| 304 | |
| 305 | if (!(x = ttyname(0))) exit(1); |
| 306 | if (stat(x, &sb)) exit(1); |
| 307 | om = sb.st_mode; |
| 308 | if (om & 002) exit(0); |
| 309 | m = system("mesg y"); |
| 310 | if (m == -1 || m == 127) exit(1); |
| 311 | if (stat(x, &sb)) exit(1); |
| 312 | m = sb.st_mode; |
| 313 | if (chmod(x, om)) exit(1); |
| 314 | if (m & 002) exit(0); |
| 315 | if (sb.st_gid == getgid()) exit(1); |
| 316 | if (!(fp=fopen("conftest_grp", "w"))) |
| 317 | exit(1); |
| 318 | fprintf(fp, "%d\n", sb.st_gid); |
| 319 | fclose(fp); |
| 320 | exit(0); |
| 321 | } |
| 322 | ],[ |
| 323 | if test -f conftest_grp; then |
| 324 | ptygrp=`cat conftest_grp` |
| 325 | AC_NOTE([- pty mode: $ptymode, group: $ptygrp]) |
| 326 | AC_DEFINE_UNQUOTED(PTYMODE, $ptymode) |
| 327 | AC_DEFINE_UNQUOTED(PTYGROUP,$ptygrp) |
| 328 | else |
| 329 | AC_NOTE(- ptys are world accessable) |
| 330 | fi |
| 331 | ],[ |
| 332 | WRITEPATH='' |
| 333 | XTERMPATH='' |
| 334 | AC_PATH_PROG(WRITEPATH, write) |
| 335 | AC_PATH_PROG(XTERMPATH, xterm) |
| 336 | found= |
| 337 | if test -n "$WRITEPATH$XTERMPATH"; then |
| 338 | findfollow= |
| 339 | lsfollow= |
| 340 | found=`find $WRITEPATH $XTERMPATH -follow -print 2>/dev/null` |
| 341 | if test -n "$found"; then |
| 342 | findfollow=-follow |
| 343 | lsfollow=L |
| 344 | fi |
| 345 | if test -n "$XTERMPATH"; then |
| 346 | ptygrpn=`ls -l$lsfollow $XTERMPATH | sed -n -e 1p | $AWK '{print $4}'` |
| 347 | if test tty != "$ptygrpn"; then |
| 348 | XTERMPATH= |
| 349 | fi |
| 350 | fi |
| 351 | fi |
| 352 | if test -n "$WRITEPATH$XTERMPATH"; then |
| 353 | found=`find $WRITEPATH $XTERMPATH $findfollow -perm -2000 -print` |
| 354 | if test -n "$found"; then |
| 355 | ptygrp=`ls -ln$lsfollow $found | sed -n -e 1p | $AWK '{print $4}'` |
| 356 | AC_NOTE([- pty mode: $ptymode, group: $ptygrp]) |
| 357 | AC_DEFINE_UNQUOTED(PTYMODE, $ptymode) |
| 358 | AC_DEFINE_UNQUOTED(PTYGROUP,$ptygrp) |
| 359 | else |
| 360 | AC_NOTE(- ptys are world accessable) |
| 361 | fi |
| 362 | else |
| 363 | AC_NOTE(- can't determine - assume ptys are world accessable) |
| 364 | fi |
| 365 | ] |
| 366 | ) |
| 367 | rm -f conftest_grp |
| 368 | fi |
| 369 | |
| 370 | dnl |
| 371 | dnl **** signal handling **** |
| 372 | dnl |
| 373 | if test -n "$posix" ; then |
| 374 | |
| 375 | dnl POSIX has reliable signals with void return type. |
| 376 | AC_NOTE(assuming posix signal definition) |
| 377 | AC_DEFINE(SIGVOID) |
| 378 | |
| 379 | else |
| 380 | |
| 381 | AC_CHECKING(return type of signal handlers) |
| 382 | AC_TRY_COMPILE( |
| 383 | [#include <sys/types.h> |
| 384 | #include <signal.h> |
| 385 | #ifdef signal |
| 386 | #undef signal |
| 387 | #endif |
| 388 | extern void (*signal ()) ();], [int i;], AC_DEFINE(SIGVOID)) |
| 389 | AC_CHECKING(sigset) |
| 390 | AC_TRY_LINK([ |
| 391 | #include <sys/types.h> |
| 392 | #include <signal.h> |
| 393 | ],[ |
| 394 | #ifdef SIGVOID |
| 395 | sigset(0, (void (*)())0); |
| 396 | #else |
| 397 | sigset(0, (int (*)())0); |
| 398 | #endif |
| 399 | ], AC_DEFINE(USESIGSET)) |
| 400 | AC_CHECKING(signal implementation) |
| 401 | AC_TRY_RUN([ |
| 402 | #include <sys/types.h> |
| 403 | #include <signal.h> |
| 404 | |
| 405 | #ifndef SIGCLD |
| 406 | #define SIGCLD SIGCHLD |
| 407 | #endif |
| 408 | #ifdef USESIGSET |
| 409 | #define signal sigset |
| 410 | #endif |
| 411 | |
| 412 | int got; |
| 413 | |
| 414 | #ifdef SIGVOID |
| 415 | void |
| 416 | #endif |
| 417 | hand() |
| 418 | { |
| 419 | got++; |
| 420 | } |
| 421 | |
| 422 | main() |
| 423 | { |
| 424 | /* on hpux we use sigvec to get bsd signals */ |
| 425 | #ifdef __hpux |
| 426 | (void)signal(SIGCLD, hand); |
| 427 | kill(getpid(), SIGCLD); |
| 428 | kill(getpid(), SIGCLD); |
| 429 | if (got < 2) |
| 430 | exit(1); |
| 431 | #endif |
| 432 | exit(0); |
| 433 | } |
| 434 | ],,AC_DEFINE(SYSVSIGS)) |
| 435 | |
| 436 | fi |
| 437 | |
| 438 | AC_OUTPUT(Makefile) |