438 lines
8.8 KiB
Text
438 lines
8.8 KiB
Text
dnl Process this file with autoconf to produce a configure script.
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AC_INIT(rlfe.c)
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AC_CONFIG_HEADER(config.h)
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VERSION=0.4
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AC_SUBST(VERSION)
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dnl
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dnl Define some useful macros
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dnl
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AC_DEFUN(AC_PROGRAM_SOURCE,
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[AC_REQUIRE([AC_PROG_CPP])AC_PROVIDE([$0])cat > conftest.c <<EOF
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#include "confdefs.h"
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[$1]
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_CUT_HERE_
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[$2]
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EOF
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eval "$ac_cpp conftest.c 2>&5 | sed -e '1,/_CUT_HERE_/d' -e 's/ //g' > conftest.out"
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. ./conftest.out
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rm -f conftest*
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])dnl
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dnl
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define(AC_NOTE,
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[echo "$1" 1>&AC_FD_MSG
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])dnl
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old_CFLAGS="$CFLAGS"
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AC_PROG_CC
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AC_PROG_CPP
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AC_PROG_GCC_TRADITIONAL
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AC_ISC_POSIX
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AC_TRY_RUN(main(){exit(0);},,[
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if test $CC != cc ; then
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AC_NOTE(Your $CC failed - restarting with CC=cc)
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AC_NOTE()
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CC=cc
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export CC
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exec $0 $configure_args
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fi
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])
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AC_TRY_RUN(main(){exit(0);},,
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exec 5>&2
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eval $ac_link
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AC_NOTE(CC=$CC; CFLAGS=$CFLAGS; LIBS=$LIBS;)
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AC_NOTE($ac_compile)
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AC_MSG_ERROR(Can't run the compiler - sorry))
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AC_TRY_RUN([
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main()
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{
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int __something_strange_();
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__something_strange_(0);
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}
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],AC_MSG_ERROR(Your compiler does not set the exit status - sorry))
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AC_PROG_AWK
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if test -f etc/toolcheck; then
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AC_CHECKING(for buggy tools)
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sh etc/toolcheck 1>&AC_FD_MSG
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fi
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dnl
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dnl **** special unix variants ****
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dnl
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AC_CHECKING(for System V)
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AC_TRY_COMPILE(
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[#include <sys/types.h>
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#include <signal.h>
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#include <fcntl.h>], [int x = SIGCHLD | FNDELAY;], , AC_DEFINE(SYSV))
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AC_CHECKING(for Solaris 2.x)
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AC_EGREP_CPP(yes,
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[#if defined(SVR4) && defined(sun)
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yes
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#endif
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], LIBS="$LIBS -lsocket -lnsl -lkstat")
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dnl
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dnl **** select() ****
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dnl
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AC_CHECKING(select)
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AC_TRY_LINK(,[select(0, 0, 0, 0, 0);],,
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LIBS="$LIBS -lnet -lnsl"
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AC_CHECKING(select with $LIBS)
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AC_TRY_LINK(,[select(0, 0, 0, 0, 0);],,
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AC_MSG_ERROR(!!! no select - no screen))
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)
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dnl
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dnl **** check the select implementation ****
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dnl
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AC_CHECKING(select return value)
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AC_TRY_RUN([
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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char *nam = "/tmp/conftest$$";
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#ifdef NAMEDPIPE
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#ifndef O_NONBLOCK
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#define O_NONBLOCK O_NDELAY
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#endif
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#ifndef S_IFIFO
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#define S_IFIFO 0010000
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#endif
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main()
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{
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#ifdef FD_SET
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fd_set f;
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#else
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int f;
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#endif
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#ifdef __FreeBSD__
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/* From Andrew A. Chernov (ache@astral.msk.su):
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* opening RDWR fifo fails in BSD 4.4, but select return values are
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* right.
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*/
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exit(0);
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#endif
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(void)alarm(5);
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#ifdef POSIX
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if (mkfifo(nam, 0777))
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#else
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if (mknod(nam, S_IFIFO|0777, 0))
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#endif
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exit(1);
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close(0);
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if (open(nam, O_RDWR | O_NONBLOCK))
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exit(1);
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if (write(0, "TEST", 4) == -1)
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exit(1);
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#else
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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main()
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{
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int s1, s2, l;
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struct sockaddr_un a;
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#ifdef FD_SET
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fd_set f;
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#else
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int f;
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#endif
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(void)alarm(5);
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if ((s1 = socket(AF_UNIX, SOCK_STREAM, 0)) == -1)
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exit(1);
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a.sun_family = AF_UNIX;
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strcpy(a.sun_path, nam);
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(void) unlink(nam);
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if (bind(s1, (struct sockaddr *) &a, strlen(nam)+2) == -1)
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exit(1);
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if (listen(s1, 2))
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exit(1);
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if (fork() == 0)
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{
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if ((s2 = socket(AF_UNIX, SOCK_STREAM, 0)) == -1)
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kill(getppid(), 3);
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(void)connect(s2, (struct sockaddr *)&a, strlen(nam) + 2);
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if (write(s2, "HELLO", 5) == -1)
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kill(getppid(), 3);
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exit(0);
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}
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l = sizeof(a);
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close(0);
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if (accept(s1, (struct sockaddr *)&a, &l))
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exit(1);
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#endif
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#ifdef FD_SET
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FD_SET(0, &f);
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#else
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f = 1;
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#endif
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if (select(1, &f, 0, 0, 0) == -1)
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exit(1);
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if (select(1, &f, &f, 0, 0) != 2)
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exit(1);
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exit(0);
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}
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],AC_NOTE(- select is ok),
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AC_NOTE(- select can't count) AC_DEFINE(SELECT_BROKEN))
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dnl
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dnl **** termcap or terminfo ****
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dnl
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AC_CHECKING(for tgetent)
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AC_TRY_LINK(,tgetent((char *)0, (char *)0);,,
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olibs="$LIBS"
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LIBS="-lcurses $olibs"
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AC_CHECKING(libcurses)
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AC_TRY_LINK(,[
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#ifdef __hpux
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__sorry_hpux_libcurses_is_totally_broken_in_10_10();
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#else
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tgetent((char *)0, (char *)0);
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#endif
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],,
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LIBS="-ltermcap $olibs"
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AC_CHECKING(libtermcap)
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AC_TRY_LINK(,tgetent((char *)0, (char *)0);,,
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LIBS="-ltermlib $olibs"
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AC_CHECKING(libtermlib)
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AC_TRY_LINK(,tgetent((char *)0, (char *)0);,,
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LIBS="-lncurses $olibs"
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AC_CHECKING(libncurses)
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AC_TRY_LINK(,tgetent((char *)0, (char *)0);,,
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AC_MSG_ERROR(!!! no tgetent - no screen))))))
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AC_TRY_RUN([
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main()
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{
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exit(strcmp(tgoto("%p1%d", 0, 1), "1") ? 0 : 1);
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}], AC_NOTE(- you use the termcap database),
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AC_NOTE(- you use the terminfo database) AC_DEFINE(TERMINFO))
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AC_CHECKING(ospeed)
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AC_TRY_LINK(extern short ospeed;,ospeed=5;,,AC_DEFINE(NEED_OSPEED))
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dnl
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dnl **** PTY specific things ****
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dnl
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AC_CHECKING(for /dev/ptc)
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if test -r /dev/ptc; then
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AC_DEFINE(HAVE_DEV_PTC)
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fi
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AC_CHECKING(for SVR4 ptys)
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sysvr4ptys=
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if test -c /dev/ptmx ; then
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AC_TRY_LINK([],[ptsname(0);grantpt(0);unlockpt(0);],[AC_DEFINE(HAVE_SVR4_PTYS)
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sysvr4ptys=1])
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fi
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AC_CHECK_FUNCS(getpt)
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dnl check for openpty()
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if test -z "$sysvr4ptys"; then
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AC_CHECK_FUNCS(openpty,,
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[AC_CHECK_LIB(util,openpty, [AC_DEFINE(HAVE_OPENPTY)] [LIBS="$LIBS -lutil"])])
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fi
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AC_CHECKING(for ptyranges)
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if test -d /dev/ptym ; then
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pdir='/dev/ptym'
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else
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pdir='/dev'
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fi
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dnl SCO uses ptyp%d
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AC_EGREP_CPP(yes,
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[#ifdef M_UNIX
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yes;
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#endif
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], ptys=`echo /dev/ptyp??`, ptys=`echo $pdir/pty??`)
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dnl if test -c /dev/ptyp19; then
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dnl ptys=`echo /dev/ptyp??`
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dnl else
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dnl ptys=`echo $pdir/pty??`
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dnl fi
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if test "$ptys" != "$pdir/pty??" ; then
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p0=`echo $ptys | tr ' ' '\012' | sed -e 's/^.*\(.\).$/\1/g' | sort -u | tr -d '\012'`
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p1=`echo $ptys | tr ' ' '\012' | sed -e 's/^.*\(.\)$/\1/g' | sort -u | tr -d '\012'`
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AC_DEFINE_UNQUOTED(PTYRANGE0,"$p0")
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AC_DEFINE_UNQUOTED(PTYRANGE1,"$p1")
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fi
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dnl **** pty mode/group handling ****
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dnl
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dnl support provided by Luke Mewburn <lm@rmit.edu.au>, 931222
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AC_ARG_WITH(pty-mode, [ --with-pty-mode=mode default mode for ptys], [ ptymode="${withval}" ])
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AC_ARG_WITH(pty-group, [ --with-pty-group=group default group for ptys], [ ptygrp="${withval}" ])
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test -n "$ptymode" || ptymode=0620
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if test -n "$ptygrp" ; then
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AC_DEFINE_UNQUOTED(PTYMODE, $ptymode)
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AC_DEFINE_UNQUOTED(PTYGROUP,$ptygrp)
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else
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AC_CHECKING(default tty permissions/group)
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rm -f conftest_grp
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AC_TRY_RUN([
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdio.h>
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main()
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{
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struct stat sb;
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char *x,*ttyname();
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int om, m;
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FILE *fp;
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if (!(x = ttyname(0))) exit(1);
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if (stat(x, &sb)) exit(1);
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om = sb.st_mode;
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if (om & 002) exit(0);
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m = system("mesg y");
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if (m == -1 || m == 127) exit(1);
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if (stat(x, &sb)) exit(1);
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m = sb.st_mode;
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if (chmod(x, om)) exit(1);
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if (m & 002) exit(0);
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if (sb.st_gid == getgid()) exit(1);
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if (!(fp=fopen("conftest_grp", "w")))
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exit(1);
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fprintf(fp, "%d\n", sb.st_gid);
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fclose(fp);
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exit(0);
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}
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],[
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if test -f conftest_grp; then
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ptygrp=`cat conftest_grp`
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AC_NOTE([- pty mode: $ptymode, group: $ptygrp])
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AC_DEFINE_UNQUOTED(PTYMODE, $ptymode)
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AC_DEFINE_UNQUOTED(PTYGROUP,$ptygrp)
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else
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AC_NOTE(- ptys are world accessable)
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fi
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],[
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WRITEPATH=''
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XTERMPATH=''
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AC_PATH_PROG(WRITEPATH, write)
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AC_PATH_PROG(XTERMPATH, xterm)
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found=
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if test -n "$WRITEPATH$XTERMPATH"; then
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findfollow=
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lsfollow=
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found=`find $WRITEPATH $XTERMPATH -follow -print 2>/dev/null`
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if test -n "$found"; then
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findfollow=-follow
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lsfollow=L
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fi
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if test -n "$XTERMPATH"; then
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ptygrpn=`ls -l$lsfollow $XTERMPATH | sed -n -e 1p | $AWK '{print $4}'`
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if test tty != "$ptygrpn"; then
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XTERMPATH=
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fi
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fi
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fi
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if test -n "$WRITEPATH$XTERMPATH"; then
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found=`find $WRITEPATH $XTERMPATH $findfollow -perm -2000 -print`
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if test -n "$found"; then
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ptygrp=`ls -ln$lsfollow $found | sed -n -e 1p | $AWK '{print $4}'`
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AC_NOTE([- pty mode: $ptymode, group: $ptygrp])
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AC_DEFINE_UNQUOTED(PTYMODE, $ptymode)
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AC_DEFINE_UNQUOTED(PTYGROUP,$ptygrp)
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else
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AC_NOTE(- ptys are world accessable)
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fi
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else
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AC_NOTE(- can't determine - assume ptys are world accessable)
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fi
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]
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)
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rm -f conftest_grp
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fi
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dnl
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dnl **** signal handling ****
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dnl
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if test -n "$posix" ; then
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dnl POSIX has reliable signals with void return type.
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AC_NOTE(assuming posix signal definition)
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AC_DEFINE(SIGVOID)
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else
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AC_CHECKING(return type of signal handlers)
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AC_TRY_COMPILE(
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[#include <sys/types.h>
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#include <signal.h>
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#ifdef signal
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#undef signal
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#endif
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extern void (*signal ()) ();], [int i;], AC_DEFINE(SIGVOID))
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AC_CHECKING(sigset)
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AC_TRY_LINK([
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#include <sys/types.h>
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#include <signal.h>
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],[
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#ifdef SIGVOID
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sigset(0, (void (*)())0);
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#else
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sigset(0, (int (*)())0);
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#endif
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], AC_DEFINE(USESIGSET))
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AC_CHECKING(signal implementation)
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AC_TRY_RUN([
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#include <sys/types.h>
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#include <signal.h>
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#ifndef SIGCLD
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#define SIGCLD SIGCHLD
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#endif
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#ifdef USESIGSET
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#define signal sigset
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#endif
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int got;
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#ifdef SIGVOID
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void
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#endif
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hand()
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{
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got++;
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}
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main()
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{
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/* on hpux we use sigvec to get bsd signals */
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#ifdef __hpux
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(void)signal(SIGCLD, hand);
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kill(getpid(), SIGCLD);
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kill(getpid(), SIGCLD);
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if (got < 2)
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exit(1);
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#endif
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exit(0);
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}
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],,AC_DEFINE(SYSVSIGS))
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fi
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AC_OUTPUT(Makefile)
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