dnl Process this file with autoconf to produce a configure script. AC_INIT(rlfe.c) AC_CONFIG_HEADER(config.h) VERSION=0.4 AC_SUBST(VERSION) dnl dnl Define some useful macros dnl AC_DEFUN(AC_PROGRAM_SOURCE, [AC_REQUIRE([AC_PROG_CPP])AC_PROVIDE([$0])cat > conftest.c <&5 | sed -e '1,/_CUT_HERE_/d' -e 's/ //g' > conftest.out" . ./conftest.out rm -f conftest* ])dnl dnl define(AC_NOTE, [echo "$1" 1>&AC_FD_MSG ])dnl old_CFLAGS="$CFLAGS" AC_PROG_CC AC_PROG_CPP AC_PROG_GCC_TRADITIONAL AC_ISC_POSIX AC_TRY_RUN(main(){exit(0);},,[ if test $CC != cc ; then AC_NOTE(Your $CC failed - restarting with CC=cc) AC_NOTE() CC=cc export CC exec $0 $configure_args fi ]) AC_TRY_RUN(main(){exit(0);},, exec 5>&2 eval $ac_link AC_NOTE(CC=$CC; CFLAGS=$CFLAGS; LIBS=$LIBS;) AC_NOTE($ac_compile) AC_MSG_ERROR(Can't run the compiler - sorry)) AC_TRY_RUN([ main() { int __something_strange_(); __something_strange_(0); } ],AC_MSG_ERROR(Your compiler does not set the exit status - sorry)) AC_PROG_AWK if test -f etc/toolcheck; then AC_CHECKING(for buggy tools) sh etc/toolcheck 1>&AC_FD_MSG fi dnl dnl **** special unix variants **** dnl AC_CHECKING(for System V) AC_TRY_COMPILE( [#include #include #include ], [int x = SIGCHLD | FNDELAY;], , AC_DEFINE(SYSV)) AC_CHECKING(for Solaris 2.x) AC_EGREP_CPP(yes, [#if defined(SVR4) && defined(sun) yes #endif ], LIBS="$LIBS -lsocket -lnsl -lkstat") dnl dnl **** select() **** dnl AC_CHECKING(select) AC_TRY_LINK(,[select(0, 0, 0, 0, 0);],, LIBS="$LIBS -lnet -lnsl" AC_CHECKING(select with $LIBS) AC_TRY_LINK(,[select(0, 0, 0, 0, 0);],, AC_MSG_ERROR(!!! no select - no screen)) ) dnl dnl **** check the select implementation **** dnl AC_CHECKING(select return value) AC_TRY_RUN([ #include #include #include char *nam = "/tmp/conftest$$"; #ifdef NAMEDPIPE #ifndef O_NONBLOCK #define O_NONBLOCK O_NDELAY #endif #ifndef S_IFIFO #define S_IFIFO 0010000 #endif main() { #ifdef FD_SET fd_set f; #else int f; #endif #ifdef __FreeBSD__ /* From Andrew A. Chernov (ache@astral.msk.su): * 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 #include #include main() { int s1, s2, l; struct sockaddr_un a; #ifdef FD_SET fd_set f; #else int f; #endif (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 #ifdef FD_SET FD_SET(0, &f); #else f = 1; #endif if (select(1, &f, 0, 0, 0) == -1) exit(1); if (select(1, &f, &f, 0, 0) != 2) exit(1); exit(0); } ],AC_NOTE(- select is ok), AC_NOTE(- 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="-lncurses $olibs" AC_CHECKING(libncurses) AC_TRY_LINK(,tgetent((char *)0, (char *)0);,, AC_MSG_ERROR(!!! no tgetent - no screen)))))) AC_TRY_RUN([ main() { exit(strcmp(tgoto("%p1%d", 0, 1), "1") ? 0 : 1); }], AC_NOTE(- you use the termcap database), AC_NOTE(- you use the terminfo database) AC_DEFINE(TERMINFO)) AC_CHECKING(ospeed) AC_TRY_LINK(extern short ospeed;,ospeed=5;,,AC_DEFINE(NEED_OSPEED)) dnl dnl **** PTY specific things **** dnl AC_CHECKING(for /dev/ptc) if test -r /dev/ptc; then AC_DEFINE(HAVE_DEV_PTC) fi AC_CHECKING(for SVR4 ptys) sysvr4ptys= if test -c /dev/ptmx ; then AC_TRY_LINK([],[ptsname(0);grantpt(0);unlockpt(0);],[AC_DEFINE(HAVE_SVR4_PTYS) sysvr4ptys=1]) fi AC_CHECK_FUNCS(getpt) dnl check for openpty() if test -z "$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,"$p1") fi dnl **** pty mode/group handling **** dnl dnl support provided by Luke Mewburn , 931222 AC_ARG_WITH(pty-mode, [ --with-pty-mode=mode default mode for ptys], [ ptymode="${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 #include #include 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 ptygrp=`cat conftest_grp` AC_NOTE([- pty mode: $ptymode, group: $ptygrp]) AC_DEFINE_UNQUOTED(PTYMODE, $ptymode) AC_DEFINE_UNQUOTED(PTYGROUP,$ptygrp) else AC_NOTE(- ptys are world accessable) fi ],[ WRITEPATH='' XTERMPATH='' AC_PATH_PROG(WRITEPATH, write) AC_PATH_PROG(XTERMPATH, xterm) found= if test -n "$WRITEPATH$XTERMPATH"; then findfollow= lsfollow= found=`find $WRITEPATH $XTERMPATH -follow -print 2>/dev/null` if test -n "$found"; then findfollow=-follow lsfollow=L fi if test -n "$XTERMPATH"; then ptygrpn=`ls -l$lsfollow $XTERMPATH | sed -n -e 1p | $AWK '{print $4}'` if test tty != "$ptygrpn"; then XTERMPATH= fi fi fi if test -n "$WRITEPATH$XTERMPATH"; then found=`find $WRITEPATH $XTERMPATH $findfollow -perm -2000 -print` if test -n "$found"; then ptygrp=`ls -ln$lsfollow $found | sed -n -e 1p | $AWK '{print $4}'` AC_NOTE([- pty mode: $ptymode, group: $ptygrp]) AC_DEFINE_UNQUOTED(PTYMODE, $ptymode) AC_DEFINE_UNQUOTED(PTYGROUP,$ptygrp) else AC_NOTE(- ptys are world accessable) fi else AC_NOTE(- can't determine - assume ptys are world accessable) fi ] ) rm -f conftest_grp fi dnl dnl **** signal handling **** dnl if test -n "$posix" ; then dnl POSIX has reliable signals with void return type. AC_NOTE(assuming posix signal definition) AC_DEFINE(SIGVOID) else AC_CHECKING(return type of signal handlers) AC_TRY_COMPILE( [#include #include #ifdef signal #undef signal #endif extern void (*signal ()) ();], [int i;], AC_DEFINE(SIGVOID)) AC_CHECKING(sigset) AC_TRY_LINK([ #include #include ],[ #ifdef SIGVOID sigset(0, (void (*)())0); #else sigset(0, (int (*)())0); #endif ], AC_DEFINE(USESIGSET)) AC_CHECKING(signal implementation) AC_TRY_RUN([ #include #include #ifndef SIGCLD #define SIGCLD SIGCHLD #endif #ifdef USESIGSET #define signal sigset #endif int got; #ifdef SIGVOID void #endif hand() { got++; } main() { /* on hpux we use sigvec to get bsd signals */ #ifdef __hpux (void)signal(SIGCLD, hand); kill(getpid(), SIGCLD); kill(getpid(), SIGCLD); if (got < 2) exit(1); #endif exit(0); } ],,AC_DEFINE(SYSVSIGS)) fi AC_OUTPUT(Makefile)