[screen-devel] Automake patch 3

[William Pursell]

--
William Pursell

>From c146c3609d24f6b81713124e9b465ea3dac23b17 Mon Sep 17 00:00:00 2001
From: William Pursell <address@hidden>
Date: Mon, 6 Oct 2008 20:24:08 +0100
Subject: [PATCH] Adding 2nd portion of new configure.ac

---
 src/configure.ac |  350 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 350 insertions(+), 0 deletions(-)

diff --git a/src/configure.ac b/src/configure.ac
index 0001c39..8dcb848 100644
--- a/src/configure.ac
+++ b/src/configure.ac
@@ -398,3 +398,353 @@ dnl       may need        LIBS="$LIBS -lsocket"   here
 dnl
 
 AC_CHECKING(sockets)
+AC_TRY_RUN([
+/* For select - According to POSIX 1003.1-2001 */
+#include <sys/select.h>
+
+/* For select - According to earlier standards */
+#include <sys/time.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+char *son = "/tmp/conftest$$";
+
+main()
+{
+  int s1, s2, l;
+  struct sockaddr_un a;
+  fd_set f;
+
+  (void)alarm(5);
+  if ((s1 = socket(AF_UNIX, SOCK_STREAM, 0)) == -1)
+    exit(1);
+  a.sun_family = AF_UNIX;
+  strcpy(a.sun_path, son);
+  (void) unlink(son);
+  if (bind(s1, (struct sockaddr *) &a, strlen(son)+2) == -1)
+    exit(1);
+  if (listen(s1, 2))
+    exit(1);
+  if (fork() == 0)
+    {
+      if ((s2 = socket(AF_UNIX, SOCK_STREAM, 0)) == -1)
+       kill(getppid(), 3);
+      (void)connect(s2, (struct sockaddr *)&a, strlen(son) + 2);
+      if (write(s2, "HELLO", 5) == -1)
+       kill(getppid(), 3);
+      exit(0);
+    }
+  l = sizeof(a);
+  close(0);
+  if (accept(s1, &a, &l))
+    exit(1);
+  FD_SET(0, &f);
+  if (select(1, &f, 0, 0, 0) == -1)
+    exit(1);
+  exit(0);
+}
+], AC_MSG_NOTICE(- your sockets are usable)
+ sock=1,
+AC_MSG_NOTICE(- your sockets are not usable))
+rm -f /tmp/conftest*
+
+if test -n "$sock"; then
+AC_CHECKING(socket implementation)
+AC_TRY_RUN([
+/* For select - According to POSIX 1003.1-2001 */
+#include <sys/select.h>
+
+/* For select - According to earlier standards */
+#include <sys/time.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <sys/stat.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+char *son = "/tmp/conftest$$";
+
+main()
+{
+  int s;
+  struct stat stb;
+  struct sockaddr_un a;
+  if ((s = socket(AF_UNIX, SOCK_STREAM, 0)) == -1)
+    exit(0);
+  a.sun_family = AF_UNIX;
+  strcpy(a.sun_path, son);
+  (void) unlink(son);
+  if (bind(s, (struct sockaddr *) &a, strlen(son)+2) == -1)
+    exit(0);
+  if (stat(son, &stb))
+    exit(1);
+  close(s);
+  exit(0);
+}
+],AC_MSG_NOTICE(- you are normal),
+AC_MSG_NOTICE(- unix domain sockets are not kept in the filesystem)
+AC_DEFINE(SOCK_NOT_IN_FS) socknofs=1)
+rm -f /tmp/conftest*
+fi
+
+
+dnl
+dnl    ****  choose sockets or fifos  ****
+dnl
+if test -n "$fifo"; then
+  if test -n "$sock"; then
+    if test -n "$nore"; then
+      AC_MSG_NOTICE(- hmmm... better take the fifos)
+      AC_DEFINE(NAMEDPIPE)
+    elif test -n "$fifobr"; then
+      AC_MSG_NOTICE(- as your fifos are broken lets use the sockets.)
+    else
+      AC_MSG_NOTICE(- both sockets and fifos usable. let's take sockets.)
+    fi
+  else
+    AC_MSG_NOTICE(- using named pipes, of course)
+    AC_DEFINE(NAMEDPIPE)
+  fi
+elif test -n "$sock"; then
+  AC_MSG_NOTICE(- using unix-domain sockets, of course)
+else
+  AC_MSG_ERROR(you have neither usable sockets nor usable pipes -> no screen)
+fi
+
+dnl
+dnl    ****  check the select implementation ****
+dnl
+
+AC_CHECKING(select return value)
+AC_TRY_RUN([
+/* For select - According to POSIX 1003.1-2001 */
+#include <sys/select.h>
+
+/* For select - According to earlier standards */
+#include <sys/time.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <sys/stat.h>
+#include <fcntl.h>
+
+char *nam = "/tmp/conftest$$";
+
+#ifdef NAMEDPIPE
+
+#ifndef O_NONBLOCK
+#define O_NONBLOCK O_NDELAY
+#endif
+#ifndef S_IFIFO
+#define S_IFIFO 0010000
+#endif
+
+
+main()
+{
+  fd_set f;
+
+#ifdef __FreeBSD__
+/* From Andrew A. Chernov (address@hidden):
+ * opening RDWR fifo fails in BSD 4.4, but select return values are
+ * right.
+ */
+  exit(0);
+#endif
+  (void)alarm(5);
+#ifdef POSIX
+  if (mkfifo(nam, 0777))
+#else
+  if (mknod(nam, S_IFIFO|0777, 0))
+#endif
+    exit(1);
+  close(0);
+  if (open(nam, O_RDWR | O_NONBLOCK))
+    exit(1);
+  if (write(0, "TEST", 4) == -1)
+    exit(1);
+
+#else
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+main()
+{
+  int s1, s2, l;
+  struct sockaddr_un a;
+  fd_set f;
+
+  (void)alarm(5);
+  if ((s1 = socket(AF_UNIX, SOCK_STREAM, 0)) == -1)
+    exit(1);
+  a.sun_family = AF_UNIX;
+  strcpy(a.sun_path, nam);
+  (void) unlink(nam);
+  if (bind(s1, (struct sockaddr *) &a, strlen(nam)+2) == -1)
+    exit(1);
+  if (listen(s1, 2))
+    exit(1);
+  if (fork() == 0)
+    {
+      if ((s2 = socket(AF_UNIX, SOCK_STREAM, 0)) == -1)
+       kill(getppid(), 3);
+      (void)connect(s2, (struct sockaddr *)&a, strlen(nam) + 2);
+      if (write(s2, "HELLO", 5) == -1)
+       kill(getppid(), 3);
+      exit(0);
+    }
+  l = sizeof(a);
+  close(0);
+  if (accept(s1, (struct sockaddr *)&a, &l))
+    exit(1);
+#endif
+
+
+  FD_SET(0, &f);
+  if (select(1, &f, 0, 0, 0) == -1)
+    exit(1);
+  if (select(1, &f, &f, 0, 0) != 2)
+    exit(1);
+  exit(0);
+}
+],AC_MSG_NOTICE(- select is ok),
+AC_MSG_NOTICE(- select can't count) 
+AC_DEFINE(SELECT_BROKEN))
+
+dnl
+dnl    ****  termcap or terminfo  ****
+dnl
+AC_CHECKING(for tgetent)
+AC_TRY_LINK(,tgetent((char *)0, (char *)0);,,
+olibs="$LIBS"
+LIBS="-lcurses $olibs"
+AC_CHECKING(libcurses)
+AC_TRY_LINK(,[
+#ifdef __hpux
+__sorry_hpux_libcurses_is_totally_broken_in_10_10();
+#else
+tgetent((char *)0, (char *)0);
+#endif
+],,
+LIBS="-ltermcap $olibs"
+AC_CHECKING(libtermcap)
+AC_TRY_LINK(,tgetent((char *)0, (char *)0);,,
+LIBS="-ltermlib $olibs"
+AC_CHECKING(libtermlib)
+AC_TRY_LINK(,tgetent((char *)0, (char *)0);,,
+LIBS="-lncursesw $olibs"
+AC_CHECKING(libncursesw)
+AC_TRY_LINK(,tgetent((char *)0, (char *)0);,,
+LIBS="-lncurses $olibs"
+AC_CHECKING(libncurses)
+AC_TRY_LINK(,tgetent((char *)0, (char *)0);,,
+AC_MSG_ERROR(!!! no tgetent - no screen)))))))
+
+AC_TRY_RUN([
+main()
+{
+ exit(strcmp(tgoto("%p1%d", 0, 1), "1") ? 0 : 1);
+}], AC_MSG_NOTICE(- you use the termcap database),
+AC_MSG_NOTICE(- you use the terminfo database) 
+AC_DEFINE(TERMINFO))
+AC_CHECKING(ospeed)
+AC_TRY_LINK(extern short ospeed;,ospeed=5;,,AC_DEFINE(NEED_OSPEED))
+
+dnl
+dnl    ****  PTY specific things  ****
+dnl
+AC_CHECKING(for /dev/ptc)
+if test -r /dev/ptc; then
+AC_DEFINE(HAVE_DEV_PTC)
+fi
+
+AC_CHECKING(for SVR4 ptys)
+sysvr4ptys=
+if test -c /dev/ptmx ; then
+AC_TRY_LINK([],[ptsname(0);grantpt(0);unlockpt(0);],[AC_DEFINE(HAVE_SVR4_PTYS)
+sysvr4ptys=1])
+fi
+
+AC_CHECK_FUNCS(getpt)
+
+dnl check for openpty()
+if test -z "$sysvr4ptys"; then
+AC_CHECK_FUNCS(openpty,,
+[AC_CHECK_LIB(util,openpty, [AC_DEFINE(HAVE_OPENPTY)] [LIBS="$LIBS -lutil"])])
+fi
+
+AC_CHECKING(for ptyranges)
+if test -d /dev/ptym ; then
+pdir='/dev/ptym'
+else
+pdir='/dev'
+fi
+dnl SCO uses ptyp%d
+AC_EGREP_CPP(yes,
+[#ifdef M_UNIX
+   yes;
+#endif
+], ptys=`echo /dev/ptyp??`, ptys=`echo $pdir/pty??`)
+dnl if test -c /dev/ptyp19; then
+dnl ptys=`echo /dev/ptyp??`
+dnl else
+dnl ptys=`echo $pdir/pty??`
+dnl fi
+if test "$ptys" != "$pdir/pty??" ; then
+p0=`echo $ptys | tr ' ' '\012' | sed -e 's/^.*\(.\).$/\1/g' | sort -u | tr -d 
'\012'`
+p1=`echo $ptys | tr ' ' '\012' | sed -e 's/^.*\(.\)$/\1/g'  | sort -u | tr -d 
'\012'`
+AC_DEFINE_UNQUOTED(PTYRANGE0,"$p0")
+AC_DEFINE_UNQUOTED(PTYRANGE1,"$p1")
+fi
+
+dnl    ****  pty mode/group handling ****
+dnl
+dnl support provided by Luke Mewburn <address@hidden>, 931222
+AC_ARG_WITH(pty-mode, [  --with-pty-mode=mode    default mode for ptys], [ 
ptymode="${withval}" ])
+AC_ARG_WITH(pty-group, [  --with-pty-group=group  default group for ptys], [ 
ptygrp="${withval}" ])
+test -n "$ptymode" || ptymode=0620
+if test -n "$ptygrp" ; then
+AC_DEFINE_UNQUOTED(PTYMODE, $ptymode)
+AC_DEFINE_UNQUOTED(PTYGROUP,$ptygrp)
+else
+
+AC_CHECKING(default tty permissions/group)
+rm -f conftest_grp
+AC_TRY_RUN([
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <stdio.h>
+main()
+{
+  struct stat sb;
+  char *x,*ttyname();
+  int om, m;
+  FILE *fp;
+
+  if (!(x = ttyname(0))) exit(1);
+  if (stat(x, &sb)) exit(1);
+  om = sb.st_mode;
+  if (om & 002) exit(0);
+  m = system("mesg y");
+  if (m == -1 || m == 127) exit(1);
+  if (stat(x, &sb)) exit(1);
+  m = sb.st_mode;
+  if (chmod(x, om)) exit(1);
+  if (m & 002) exit(0);
+  if (sb.st_gid == getgid()) exit(1);
+  if (!(fp=fopen("conftest_grp", "w")))
+    exit(1);
+  fprintf(fp, "%d\n", sb.st_gid);
+  fclose(fp);
+  exit(0);
+}
+],[
+    if test -f conftest_grp; then
-- 
1.6.0.2.GIT