readline/examples/rlfe/configure.in

   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)