diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 02:20:21 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 02:20:21 +0000 |
commit | 4f64827f3a395072f300b86ef17f730805b47048 (patch) | |
tree | c16297f7d68903dc80c86e3003b8e3ab5f030f7d /configure.ac | |
parent | Initial commit. (diff) | |
download | screen-upstream.tar.xz screen-upstream.zip |
Adding upstream version 4.6.2.upstream/4.6.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | configure.ac | 1302 |
1 files changed, 1302 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac new file mode 100644 index 0000000..28237f5 --- /dev/null +++ b/configure.ac @@ -0,0 +1,1302 @@ +dnl Process this file with autoconf to produce a configure script. +dnl +dnl $Id$ GNU +dnl +dnl Many thanks to David MacKenzie for writing autoconf and +dnl providing a sample configure.in file for screen. +dnl +AC_REVISION($Revision$)dnl +AC_INIT(screen.c) +AC_CONFIG_HEADER(config.h) +AC_PREREQ(2.60) + +dnl +dnl Define some useful macros +dnl +AC_DEFUN([AC_PROGRAM_SOURCE], +[AC_REQUIRE([AC_PROG_CPP])AC_PROVIDE([$0])cat > conftest.c <<EOF +#include "confdefs.h" +[$1] +_CUT_HERE_ +[$2] +EOF +eval "$ac_cpp conftest.c 2>&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 + +dnl +dnl Extract version from patchlevel.h +dnl +rev=`sed < ${srcdir}/patchlevel.h -n -e '/#define REV/s/#define REV *//p'` +vers=`sed < ${srcdir}/patchlevel.h -n -e '/#define VERS/s/#define VERS *//p'` +pat=`sed < ${srcdir}/patchlevel.h -n -e '/#define PATCHLEVEL/s/#define PATCHLEVEL *//p'` +VERSION="$rev.$vers.$pat" +AC_NOTE(this is screen version $VERSION) +AC_SUBST(VERSION) +AC_PREFIX_PROGRAM(screen) +AC_PREFIX_PROGRAM(gzip) + +old_CFLAGS="$CFLAGS" +AC_PROG_CC +AC_PROG_CPP +AC_PROG_GCC_TRADITIONAL +AC_ISC_POSIX +AC_USE_SYSTEM_EXTENSIONS + +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($ac_compile) +AC_MSG_ERROR(Can't run the compiler - sorry)) + +AC_TRY_RUN([ +main() +{ + int __something_strange_(); + __something_strange_(0); +} +],AC_MSG_ERROR(Your compiler does not set the exit status - sorry)) + +AC_PROG_AWK + +AC_PROG_INSTALL + +if test -f etc/toolcheck; then +AC_CHECKING(for buggy tools) +sh etc/toolcheck 1>&AC_FD_MSG +fi + + + +dnl SOCKDIR +AC_MSG_CHECKING(if a system-wide socket dir should be used) +AC_ARG_ENABLE(socket-dir, + [ --disable-socket-dir disable system wide socket-dir and use ~/.screen instead], + [ + AC_MSG_RESULT(no. ~/.screen will be used instead.) + ], + [ + AC_MSG_RESULT(yes) + AC_MSG_CHECKING(for the socket dir) + SOCKDIR="(eff_uid ? \"/tmp/uscreens\" : \"/tmp/screens\")" + AC_ARG_WITH(socket-dir, [ --with-socket-dir=path where to put the per-user sockets], [ + case "${withval}" in + *\"*) SOCKDIR="${withval}" ;; + *) SOCKDIR="\"${withval}\"" ;; + esac + ]) + AC_MSG_RESULT(${SOCKDIR}) + AC_DEFINE_UNQUOTED(SOCKDIR, $SOCKDIR) + ] +) + + +dnl +dnl **** special unix variants **** +dnl +if test -n "$ISC"; then + AC_DEFINE(ISC) LIBS="$LIBS -linet" +fi + +dnl AC_CHECKING(for OSF1) +dnl if test -f /bin/uname ; then +dnl if test `/bin/uname` = OSF1 || test -f /osf_boot; then +dnl AC_DEFINE(OSF1) # this disables MIPS again.... +dnl fi +dnl fi + +if test -f /sysV68 ; then +AC_DEFINE(sysV68) +fi + +AC_CHECKING(for MIPS) +if test -f /lib/libmld.a || test -f /usr/lib/libmld.a || test -f /usr/lib/cmplrs/cc/libmld.a; then +oldlibs="$LIBS" +test -f /bin/mx || LIBS="$LIBS -lmld" # for nlist. But not on alpha. +dnl djm@eng.umd.edu: "... for one thing, it doubles the size of the executable" +AC_CHECKING(mld library) +AC_TRY_LINK(,,,LIBS="$oldlibs") +dnl +dnl +if test -r /dev/ptc; then +AC_DEFINE(MIPS) +AC_CHECKING(wait3) +AC_TRY_LINK(,[wait3();], , +AC_CHECKING(wait2) +AC_TRY_LINK(,[wait2();], +dnl John Rouillard (rouilj@sni-usa.com): +dnl need -I/usr/include/bsd in RISCOS otherwise sockets are broken, no +dnl job control etc. +dnl Detect RISCOS if wait2 is present, but not wait3. +AC_DEFINE(USE_WAIT2) LIBS="$LIBS -lbsd" ; CC="$CC -I/usr/include/bsd" +)) +fi +fi + + +AC_CHECKING(for Ultrix) +AC_EGREP_CPP(yes, +[#if defined(ultrix) || defined(__ultrix) + yes; +#endif +], ULTRIX=1) + +if test -f /usr/lib/libpyr.a ; then +oldlibs="$LIBS" +LIBS="$LIBS -lpyr" +AC_CHECKING(Pyramid OSX) +AC_TRY_LINK(,[open_controlling_pty("")], AC_DEFINE(OSX), LIBS="$oldlibs") +fi + +dnl ghazi@caip.rutgers.edu (Kaveh R. Ghazi): +dnl BBN butterfly is not POSIX, but a MACH BSD system. +dnl Do not define POSIX and TERMIO. +AC_CHECKING(for butterfly) +AC_EGREP_CPP(yes, +[#if defined(butterfly) + yes; +#endif +], butterfly=1) + +if test -z "$butterfly"; then +if test -n "$ULTRIX"; then + test -z "$GCC" && CC="$CC -YBSD" +fi +AC_CHECKING(for POSIX.1) +AC_EGREP_CPP(yes, +[#include <sys/types.h> +#include <unistd.h> +main () { +#ifdef _POSIX_VERSION + yes; +#endif +], AC_NOTE(- you have a POSIX system) AC_DEFINE(POSIX) posix=1) +fi + +AC_CHECKING(for System V) +AC_TRY_COMPILE( +[#include <sys/types.h> +#include <signal.h> +#include <fcntl.h>], [int x = SIGCHLD | FNDELAY;], , AC_DEFINE(SYSV)) + +AC_CHECKING(for sequent/ptx) +AC_EGREP_CPP(yes, +[#ifdef _SEQUENT_ + yes; +#endif +], LIBS="$LIBS -lsocket -linet";seqptx=1) + +oldlibs="$LIBS" +LIBS="$LIBS -lelf" +AC_CHECKING(SVR4) +AC_TRY_LINK([#include <utmpx.h> +],, +[AC_CHECK_HEADER(dwarf.h, AC_DEFINE(SVR4) AC_DEFINE(BUGGYGETLOGIN), +[AC_CHECK_HEADER(elf.h, AC_DEFINE(SVR4) AC_DEFINE(BUGGYGETLOGIN))])] +,LIBS="$oldlibs") +AC_CHECK_HEADERS([stropts.h string.h strings.h]) + +AC_CHECKING(for Solaris 2.x) +AC_EGREP_CPP(yes, +[#if defined(SVR4) && defined(sun) + yes +#endif +], LIBS="$LIBS -lsocket -lnsl -lkstat") + +dnl +dnl **** typedefs **** +dnl +dnl (currently not used) +dnl +dnl AC_CHECKING(for pid_t) +dnl AC_EGREP_CPP(pid_t,[#include <sys/types.h> +dnl ],AC_DEFINE(PID_T_DEFINED)) +dnl +dnl AC_CHECKING(for sig_t) +dnl AC_EGREP_CPP(sig_t,[#include <sys/types.h> +dnl #include <signal.h> +dnl ],AC_DEFINE(SIG_T_DEFINED)) +dnl +dnl AC_CHECKING(for uid_t) +dnl AC_EGREP_CPP(uid_t,[#include <sys/types.h> +dnl ],AC_DEFINE(UID_T_DEFINED)) +dnl + +dnl +dnl **** Job control **** +dnl + +AC_CHECKING(BSD job jontrol) +AC_TRY_LINK( +[#include <sys/types.h> +#include <sys/ioctl.h> +], [ +#ifdef POSIX +tcsetpgrp(0, 0); +#else +int x = TIOCSPGRP; +#ifdef SYSV +setpgrp(); +#else +int y = TIOCNOTTY; +#endif +#endif +], AC_NOTE(- you have jobcontrol) AC_DEFINE(BSDJOBS), AC_NOTE(- you don't have jobcontrol)) + +dnl +dnl **** setresuid(), setreuid(), seteuid() **** +dnl +AC_CHECKING(setresuid) +AC_TRY_LINK(,[ +setresuid(0, 0, 0); +], AC_DEFINE(HAVE_SETRESUID)) +AC_CHECKING(setreuid) +AC_TRY_LINK(,[ +setreuid(0, 0); +], AC_DEFINE(HAVE_SETREUID)) +dnl +dnl seteuid() check: +dnl linux seteuid was broken before V1.1.11 +dnl NeXT, AUX, ISC, and ultrix are still broken (no saved uid support) +dnl Solaris seteuid doesn't change the saved uid, bad for +dnl multiuser screen sessions +AC_CHECKING(seteuid) +AC_TRY_LINK(,[ +#if defined(linux) || defined(NeXT) || defined(_AUX_SOURCE) || defined(AUX) || defined(ultrix) || (defined(sun) && defined(SVR4)) || defined(ISC) || defined(sony_news) +seteuid_is_broken(0); +#else +seteuid(0); +#endif +], AC_DEFINE(HAVE_SETEUID)) + +dnl execvpe +AC_CHECKING(execvpe) +AC_TRY_LINK(,[ + execvpe(0, 0, 0); +], AC_DEFINE(HAVE_EXECVPE) +CFLAGS="$CFLAGS -D_GNU_SOURCE") + +dnl +dnl **** select() **** +dnl + +AC_CHECKING(select) +AC_TRY_LINK(,[select(0, 0, 0, 0, 0);],, +LIBS="$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 **** FIFO tests **** +dnl + +AC_CHECKING(fifos) +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> + +#ifndef O_NONBLOCK +#define O_NONBLOCK O_NDELAY +#endif +#ifndef S_IFIFO +#define S_IFIFO 0010000 +#endif + +char *fin = "/tmp/conftest$$"; + +main() +{ + struct stat stb; + fd_set f; + + (void)alarm(5); + unlink(fin); +#ifdef POSIX + if (mkfifo(fin, 0777)) +#else + if (mknod(fin, S_IFIFO|0777, 0)) +#endif + exit(1); + if (stat(fin, &stb) || (stb.st_mode & S_IFIFO) != S_IFIFO) + exit(1); + close(0); +#ifdef __386BSD__ + /* + * The next test fails under 386BSD, but screen works using fifos. + * Fifos in O_RDWR mode are only used for the BROKEN_PIPE case and for + * the select() configuration test. + */ + exit(0); +#endif + if (open(fin, O_RDONLY | O_NONBLOCK)) + exit(1); + if (fork() == 0) + { + close(0); + if (open(fin, O_WRONLY | O_NONBLOCK)) + exit(1); + close(0); + if (open(fin, O_WRONLY | O_NONBLOCK)) + exit(1); + if (write(0, "TEST", 4) == -1) + exit(1); + exit(0); + } + FD_SET(0, &f); + if (select(1, &f, 0, 0, 0) == -1) + exit(1); + exit(0); +} +], AC_NOTE(- your fifos are usable) fifo=1, +AC_NOTE(- your fifos are not usable)) +rm -f /tmp/conftest* + +if test -n "$fifo"; then +AC_CHECKING(for broken fifo implementation) +AC_TRY_RUN([ +/* For select - According to POSIX 1003.1-2001 */ +#include <sys/select.h> + +/* For select - According to earlier standards */ +#include <sys/time.h> +#include <sys/types.h> +#include <unistd.h> + +#include <sys/stat.h> +#include <fcntl.h> + +#ifndef O_NONBLOCK +#define O_NONBLOCK O_NDELAY +#endif +#ifndef S_IFIFO +#define S_IFIFO 0010000 +#endif + +char *fin = "/tmp/conftest$$"; + +main() +{ + struct timeval tv; + fd_set f; + +#ifdef POSIX + if (mkfifo(fin, 0600)) +#else + if (mknod(fin, S_IFIFO|0600, 0)) +#endif + exit(1); + close(0); + if (open(fin, O_RDONLY|O_NONBLOCK)) + exit(1); + FD_SET(0, &f); + tv.tv_sec = 1; + tv.tv_usec = 0; + if (select(1, &f, 0, 0, &tv)) + exit(1); + exit(0); +} +], AC_NOTE(- your implementation is ok), +AC_NOTE(- you have a broken implementation) AC_DEFINE(BROKEN_PIPE) fifobr=1) +rm -f /tmp/conftest* +fi + +dnl +dnl **** SOCKET tests **** +dnl +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$$"; + +main() +{ + int s1, s2, l; + struct sockaddr_un a; + fd_set f; + + (void)alarm(5); + if ((s1 = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) + exit(1); + a.sun_family = AF_UNIX; + strcpy(a.sun_path, son); + (void) unlink(son); + if (bind(s1, (struct sockaddr *) &a, strlen(son)+2) == -1) + exit(1); + if (listen(s1, 2)) + exit(1); + if (fork() == 0) + { + if ((s2 = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) + kill(getppid(), 3); + (void)connect(s2, (struct sockaddr *)&a, strlen(son) + 2); + if (write(s2, "HELLO", 5) == -1) + kill(getppid(), 3); + exit(0); + } + l = sizeof(a); + close(0); + if (accept(s1, &a, &l)) + exit(1); + FD_SET(0, &f); + if (select(1, &f, 0, 0, 0) == -1) + exit(1); + exit(0); +} +], AC_NOTE(- your sockets are usable) sock=1, +AC_NOTE(- your sockets are not usable)) +rm -f /tmp/conftest* + +if test -n "$sock"; then +AC_CHECKING(socket implementation) +AC_TRY_RUN([ +/* For select - According to POSIX 1003.1-2001 */ +#include <sys/select.h> + +/* For select - According to earlier standards */ +#include <sys/time.h> +#include <sys/types.h> +#include <unistd.h> + +#include <sys/stat.h> +#include <sys/socket.h> +#include <sys/un.h> + +char *son = "/tmp/conftest$$"; + +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_NOTE(- you are normal), +AC_NOTE(- 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 +dnl **** check the select implementation **** +dnl + +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$$"; + +#ifndef O_NONBLOCK +#define O_NONBLOCK O_NDELAY +#ifndef S_IFIFO +#define S_IFIFO 0010000 + + +main() +{ + fd_set f; + +#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 <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_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="-lncursesw $olibs" +AC_CHECKING(libncursesw) +AC_TRY_LINK(,tgetent((char *)0, (char *)0);,, +LIBS="-ltinfow $olibs" +AC_CHECKING(libtinfow) +AC_TRY_LINK(,tgetent((char *)0, (char *)0);,, +LIBS="-lncurses $olibs" +AC_CHECKING(libncurses) +AC_TRY_LINK(,tgetent((char *)0, (char *)0);,, +LIBS="-ltinfo $olibs" +AC_CHECKING(libtinfo) +AC_TRY_LINK(,tgetent((char *)0, (char *)0);,, +AC_MSG_ERROR(!!! no tgetent - no screen))))))))) + +AC_TRY_RUN([ +main() +{ + exit(strcmp(tgoto("%p1%d", 0, 1), "1") ? 0 : 1); +}], AC_NOTE(- you use the termcap database), +AC_NOTE(- you use the terminfo database) AC_DEFINE(TERMINFO)) +AC_CHECKING(ospeed) +AC_TRY_LINK(extern short ospeed;,ospeed=5;,,AC_DEFINE(NEED_OSPEED)) + +dnl +dnl **** PTY specific things **** +dnl +AC_CHECKING(for /dev/ptc) +if test -r /dev/ptc; then +AC_DEFINE(HAVE_DEV_PTC) +fi + +AC_CHECKING(for SVR4 ptys) +sysvr4ptys= +if test -c /dev/ptmx ; then +AC_TRY_LINK([],[ptsname(0);grantpt(0);unlockpt(0);],[AC_DEFINE(HAVE_SVR4_PTYS) +sysvr4ptys=1]) +fi + +AC_CHECK_FUNCS(getpt) + +dnl check for openpty() +if test -z "$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,"$p1") +fi + +dnl **** pty mode/group handling **** +dnl +dnl support provided by Luke Mewburn <lm@rmit.edu.au>, 931222 +AC_ARG_WITH(pty-mode, [ --with-pty-mode=mode default mode for ptys], [ ptymode="${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 + 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 **** utmp handling **** +dnl +AC_CHECKING(getutent) +AC_TRY_LINK([ +#include <time.h> /* to get time_t on SCO */ +#include <sys/types.h> +#if defined(SVR4) && !defined(DGUX) +#include <utmpx.h> +#define utmp utmpx +#else +#include <utmp.h> +#endif +#ifdef __hpux +#define pututline _pututline +#endif +], +[int x = DEAD_PROCESS; pututline((struct utmp *)0); getutent();], AC_DEFINE(GETUTENT), +olibs="$LIBS" +LIBS="$LIBS -lgen" +AC_CHECKING(getutent with -lgen) +AC_TRY_LINK([ +#include <time.h> +#include <sys/types.h> +#if defined(SVR4) && !defined(DGUX) +#include <utmpx.h> +#define utmp utmpx +#else +#include <utmp.h> +#endif +#ifdef __hpux +#define pututline _pututline +#endif +], +[int x = DEAD_PROCESS; pututline((struct utmp *)0); getutent();], AC_DEFINE(GETUTENT), LIBS="$olibs") +) +AC_CHECKING(ut_host) +AC_TRY_COMPILE([ +#include <time.h> +#include <sys/types.h> +#if defined(SVR4) && !defined(DGUX) +#include <utmpx.h> +#define utmp utmpx +#else +#include <utmp.h> +#endif +],[struct utmp u; u.ut_host[0] = 0;], AC_DEFINE(UTHOST)) +AC_CHECK_HEADER(utempter.h, have_utempter=yes, have_utempter=no) +if test "$have_utempter" = yes; then + AC_DEFINE(HAVE_UTEMPTER) + LIBS="$LIBS -lutempter" +fi + +dnl +dnl **** loadav **** +dnl +AC_CHECKING(for libutil(s)) +test -f /usr/lib/libutils.a && LIBS="$LIBS -lutils" +test -f /usr/lib/libutil.a && LIBS="$LIBS -lutil" + +AC_CHECKING(getloadavg) +AC_TRY_LINK(,[getloadavg((double *)0, 0);], +AC_DEFINE(LOADAV_GETLOADAVG) load=1, +if test -f /usr/lib/libkvm.a ; then +olibs="$LIBS" +LIBS="$LIBS -lkvm" +AC_CHECKING(getloadavg with -lkvm) +AC_TRY_LINK(,[getloadavg((double *)0, 0);], +AC_DEFINE(LOADAV_GETLOADAVG) load=1, LIBS="$olibs") +fi +) + +if test -z "$load" ; then +AC_EGREP_CPP(yes, +[#if defined(NeXT) || defined(apollo) || defined(linux) + yes; +#endif +], load=1) +fi +if test -z "$load" ; then +AC_CHECKING(for kernelfile) +for core in /unix /vmunix /dynix /hp-ux /xelos /dev/ksyms /kernel/unix /kernel/genunix /unicos /mach /netbsd /386bsd /dgux /bsd /stand/vmunix; do + if test -f $core || test -c $core; then + break + fi +done +if test ! -f $core && test ! -c $core ; then + AC_NOTE(- no kernelfile found) +else + AC_NOTE(- using kernelfile '$core') + if test -r $core ; then + AC_DEFINE_UNQUOTED(LOADAV_UNIX,"$core") + AC_CHECK_HEADER(nlist.h, + [AC_DEFINE(NLIST_STRUCT) + AC_CHECKING(n_un in struct nlist) + AC_TRY_COMPILE([#include <nlist.h>], + [struct nlist n; n.n_un.n_name = 0;], + AC_DEFINE(NLIST_NAME_UNION))]) + + AC_CHECKING(for nlist declaration) + AC_EGREP_CPP([nlist(( | )( | )*.*\(|\()],[ +#ifdef NLIST_STRUCT +# include <nlist.h> +#else +# include <a.out.h> +#endif +],AC_DEFINE(NLIST_DECLARED)) + + AC_CHECKING(for avenrun symbol) + nlist64= + for av in avenrun _avenrun _Loadavg avenrun _avenrun _Loadavg; do + AC_TRY_RUN([ +#include <sys/types.h> +#ifdef NLIST_STRUCT +#include <nlist.h> +#else +#include <a.out.h> +#endif + +$nlist64 + +struct nlist nl[2]; + +main() +{ +#if !defined(_AUX_SOURCE) && !defined(AUX) +# ifdef NLIST_NAME_UNION + nl[0].n_un.n_name = "$av"; +# else + nl[0].n_name = "$av"; +# endif +#else + strncpy(nl[0].n_name, "$av", sizeof(nl[0].n_name)); +#endif + nlist(LOADAV_UNIX, nl); + if (nl[0].n_value == 0) + exit(1); + exit(0); +} + ],avensym=$av;break) + if test "$av" = _Loadavg; then + nlist64='#define nlist nlist64' + fi + done + if test -z "$avensym" ; then + AC_NOTE(- no avenrun symbol found) + else + AC_NOTE(- using avenrun symbol '$avensym') + AC_DEFINE_UNQUOTED(LOADAV_AVENRUN,"$avensym") + if test -n "$nlist64"; then + AC_NOTE(- used nlist64 to find it) + AC_DEFINE(LOADAV_USE_NLIST64) + fi + load=1 + fi + else + AC_NOTE( Can't configure the load average display feature) + AC_NOTE( because $core is not readable by you.) + AC_NOTE( To configure the load average display feature,) + AC_NOTE( re-run configure as root if possible.) + AC_NOTE( If you are not the system administrator then disregard) + AC_NOTE( this warning. You can still use screen without) + AC_NOTE( the load average display feature.) + fi +fi +fi + +AC_PROGRAM_SOURCE([ +#include <sys/types.h> +#include <sys/param.h> +],[ +#if !defined(LOADAV_GETLOADAVG) && ((defined(hp300) && !defined(__hpux)) || defined(sun) || (defined(ultrix) && defined(mips)) || defined(_SEQUENT_) || defined(sgi) || (defined(SVR4) && !defined(__hpux)) || defined(sony_news) || (!defined(__osf__) && defined(__alpha)) || defined(_IBMR2) || defined(_AUX_SOURCE) || defined(AUX) || defined(m88k)) +loadtype=long +# if defined(apollo) || defined(_IBMR2) || defined(_AUX_SOURCE) || defined(AUX) +loadscale=65536 +# else +# if defined(FSCALE) && !defined(__osf__) +# undef FSCALE +loadscale=FSCALE +# else +# ifdef sgi +loadtype=int +loadscale=1024 +# else +# if defined(MIPS) || defined(SVR4) || defined(m88k) +loadscale=256 +# else /* not MIPS */ +loadscale=1000 /* our default value */ +# endif /* MIPS */ +# endif /* sgi */ +# endif /* not FSCALE */ +# endif /* not apollo */ +#else +loadtype=double +loadscale=1 +#endif +#ifdef alliant +loadnum=4 +#else +loadnum=3 +#endif +]) + +if test -n "$load" ; then AC_DEFINE(LOADAV) fi +if test -n "$loadtype" ; then AC_DEFINE_UNQUOTED(LOADAV_TYPE,$loadtype) fi +if test -n "$loadnum" ; then AC_DEFINE_UNQUOTED(LOADAV_NUM,$loadnum) fi +if test -n "$loadscale" ; then AC_DEFINE_UNQUOTED(LOADAV_SCALE,$loadscale) fi + +dnl +dnl **** signal handling **** +dnl +if test -n "$posix" ; then + +dnl POSIX has reliable signals with void return type. +AC_NOTE(assuming posix signal definition) +AC_DEFINE(SIGVOID) + +else + +AC_CHECKING(return type of signal handlers) +AC_TRY_COMPILE( +[#include <sys/types.h> +#include <signal.h> +#ifdef signal +#undef signal +#endif +extern void (*signal ()) ();], [int i;], AC_DEFINE(SIGVOID)) +AC_CHECKING(sigset) +AC_TRY_LINK([ +#include <sys/types.h> +#include <signal.h> +],[ +#ifdef SIGVOID +sigset(0, (void (*)())0); +#else +sigset(0, (int (*)())0); +#endif +], AC_DEFINE(USESIGSET)) +AC_CHECKING(signal implementation) +AC_TRY_RUN([ +#include <sys/types.h> +#include <signal.h> + +#ifndef SIGCLD +#define SIGCLD SIGCHLD +#endif +#ifdef USESIGSET +#define signal sigset +#endif + +int got; + +#ifdef SIGVOID +void +#endif +hand() +{ + got++; +} + +main() +{ + /* on hpux we use sigvec to get bsd signals */ +#ifdef __hpux + (void)signal(SIGCLD, hand); + kill(getpid(), SIGCLD); + kill(getpid(), SIGCLD); + if (got < 2) + exit(1); +#endif + exit(0); +} +],,AC_DEFINE(SYSVSIGS)) + +fi + +dnl +dnl **** libraries **** +dnl + +AC_CHECKING(for crypt and sec libraries) +test -f /lib/libcrypt_d.a || test -f /usr/lib/libcrypt_d.a && LIBS="$LIBS -lcrypt_d" +oldlibs="$LIBS" +LIBS="$LIBS -lcrypt" +AC_CHECKING(crypt) +AC_TRY_LINK(,,,LIBS="$oldlibs") +test -f /lib/libsec.a || test -f /usr/lib/libsec.a && LIBS="$LIBS -lsec" +test -f /lib/libshadow.a || test -f /usr/lib/libshadow.a && LIBS="$LIBS -lshadow" +oldlibs="$LIBS" +LIBS="$LIBS -lsun" +AC_CHECKING(IRIX sun library) +AC_TRY_LINK(,,,LIBS="$oldlibs") + +AC_CHECKING(syslog) +AC_TRY_LINK(,[closelog();], , [oldlibs="$LIBS" +LIBS="$LIBS -lbsd" +AC_CHECKING(syslog in libbsd.a) +AC_TRY_LINK(, [closelog();], AC_NOTE(- found.), [LIBS="$oldlibs" +AC_NOTE(- bad news: syslog missing.) AC_DEFINE(NOSYSLOG)])]) + +AC_EGREP_CPP(yes, +[#ifdef M_UNIX + yes; +#endif +], LIBS="$LIBS -lsocket -lcrypt_i") + +dnl +dnl **** misc things **** +dnl +AC_CHECKING(wait union) +AC_TRY_COMPILE([#include <sys/types.h> +#include <sys/wait.h> +],[ + union wait x; + int y; +#ifdef WEXITSTATUS + y = WEXITSTATUS(x); +#endif +],AC_DEFINE(BSDWAIT)) + +if test -z "$butterfly"; then +AC_CHECKING(for termio or termios) +AC_TRY_CPP([#include <termio.h>], AC_DEFINE(TERMIO), +if test -n "$posix"; then +AC_TRY_CPP([#include <termios.h>], AC_DEFINE(TERMIO)) +fi +) +fi + +dnl AC_CHECK_HEADER(shadow.h, AC_DEFINE(SHADOWPW)) +AC_CHECKING(getspnam) +AC_TRY_LINK([#include <shadow.h>], [getspnam("x");],AC_DEFINE(SHADOWPW)) + +AC_CHECKING(getttyent) +AC_TRY_LINK(,[getttyent();], AC_DEFINE(GETTTYENT)) + +AC_CHECKING(fdwalk) +AC_TRY_LINK([#include <stdlib.h>], [fdwalk(NULL, NULL);],AC_DEFINE(HAVE_FDWALK)) + +AC_CHECKING(whether memcpy/memmove/bcopy handles overlapping arguments) +AC_TRY_RUN([ +main() { + char buf[10]; + strcpy(buf, "abcdefghi"); + bcopy(buf, buf + 2, 3); + if (strncmp(buf, "ababcf", 6)) + exit(1); + strcpy(buf, "abcdefghi"); + bcopy(buf + 2, buf, 3); + if (strncmp(buf, "cdedef", 6)) + exit(1); + exit(0); /* libc version works properly. */ +}], AC_DEFINE(USEBCOPY)) + +AC_TRY_RUN([ +#define bcopy(s,d,l) memmove(d,s,l) +main() { + char buf[10]; + strcpy(buf, "abcdefghi"); + bcopy(buf, buf + 2, 3); + if (strncmp(buf, "ababcf", 6)) + exit(1); + strcpy(buf, "abcdefghi"); + bcopy(buf + 2, buf, 3); + if (strncmp(buf, "cdedef", 6)) + exit(1); + exit(0); /* libc version works properly. */ +}], AC_DEFINE(USEMEMMOVE)) + + +AC_TRY_RUN([ +#define bcopy(s,d,l) memcpy(d,s,l) +main() { + char buf[10]; + strcpy(buf, "abcdefghi"); + bcopy(buf, buf + 2, 3); + if (strncmp(buf, "ababcf", 6)) + exit(1); + strcpy(buf, "abcdefghi"); + bcopy(buf + 2, buf, 3); + if (strncmp(buf, "cdedef", 6)) + exit(1); + exit(0); /* libc version works properly. */ +}], AC_DEFINE(USEMEMCPY)) + +AC_SYS_LONG_FILE_NAMES + +AC_MSG_CHECKING(for vsprintf) +AC_TRY_LINK([#include <stdarg.h>],[va_list valist; vsprintf(0,0,valist);], AC_MSG_RESULT(yes);AC_DEFINE(USEVARARGS), AC_MSG_RESULT(no)) + +AC_HEADER_DIRENT + +AC_MSG_CHECKING(for setenv) +if test -z "$ac_setenv_args"; then + AC_TRY_LINK( + [#include <stdlib.h>], + [ + setenv((char *) 0, (char *) 0, 0); + ], ac_setenv_args=3) +fi +if test -z "$ac_setenv_args"; then + AC_TRY_LINK( + [#include <stdlib.h>], + [ + setenv((char *) 0, (char *) 0); + ], ac_setenv_args=2) +fi +if test -n "$ac_setenv_args"; then + AC_DEFINE(USESETENV) + if test "$ac_setenv_args" = 3; then + AC_DEFINE(HAVE_SETENV_3) + elif test "$ac_setenv_args" = 2; then + AC_DEFINE(HAVE_SETENV_2) + fi +else + AC_MSG_RESULT(no) + AC_MSG_CHECKING(for putenv) + AC_TRY_LINK(,[putenv((char *)0);unsetenv((char *)0);], AC_MSG_RESULT(yes) , AC_MSG_RESULT(no);AC_DEFINE(NEEDPUTENV)) +fi +AC_MSG_CHECKING([for nl_langinfo(CODESET)]) +AC_TRY_LINK([ +#include <langinfo.h> +],[nl_langinfo(CODESET);], AC_MSG_RESULT(yes);AC_DEFINE(HAVE_NL_LANGINFO), AC_MSG_RESULT(no)) + +AC_SEARCH_LIBS(gethostname, nsl) + +AC_CHECK_FUNCS(rename fchmod fchown strerror lstat _exit utimes vsnprintf getcwd setlocale strftime) + +AC_ARG_ENABLE(pam, [ --enable-pam enable PAM support]) +if test "$enable_pam" = "yes"; then + AC_MSG_CHECKING(for PAM support) + oldlibs="$LIBS" + LIBS="$LIBS -lpam" + AC_TRY_LINK([#include <security/pam_appl.h>], [ + pam_start(0, 0, 0, 0); + pam_authenticate(0, 0); + pam_end(0,0); + ], AC_MSG_RESULT(yes);AC_DEFINE(USE_PAM), + AC_MSG_RESULT(no);LIBS="$oldlibs") +fi + +AC_ARG_ENABLE(use_locale, [ --enable-use-locale use localized month/day names]) +if test "$enable_use_locale" = "yes"; then + AC_DEFINE(USE_LOCALE) +fi +AC_ARG_ENABLE(telnet, [ --enable-telnet enable builtin telnet]) +if test "$enable_telnet" = "yes"; then + AC_DEFINE(BUILTIN_TELNET) +fi +AC_ARG_ENABLE(colors256, [ --enable-colors256 enable support for 256 colors]) +if test "$enable_colors256" = "yes"; then + AC_DEFINE(COLORS256) +fi +AC_ARG_ENABLE(rxvt_osc, [ --enable-rxvt_osc enable support for rxvt OSC codes]) +if test "$enable_rxvt_osc" = "yes"; then + AC_DEFINE(RXVT_OSC) +fi + +dnl +dnl **** the end **** +dnl +if test -z "$old_CFLAGS"; then + if test "x$CFLAGS" = "x-g"; then + CFLAGS="-O" + fi +fi +dnl Ptx bug workaround -- insert -lc after -ltermcap +test -n "$seqptx" && LIBS="-ltermcap -lc -lsocket -linet -lnsl -lsec -lseq" + +AC_TRY_RUN(main(){exit(0);},,AC_MSG_ERROR(Can't run the compiler - internal error. Sorry.)) + +ETCSCREENRC= +AC_MSG_CHECKING(for the global screenrc file) +AC_ARG_WITH(sys-screenrc, [ --with-sys-screenrc=path to the global screenrc file], [ ETCSCREENRC="${withval}" ]) +AC_SUBST(ETCSCREENRC) + +AC_OUTPUT(Makefile doc/Makefile, [[ +# a hook for preserving undef directive in config.h +mv config.h conftest +sed -e 's@^\(.*\)defin.\( .*\) .*/\*\(.*KEEP_UNDEF_HERE\)@\1undef\2 /\*\3@' < conftest > config.h +rm -f conftest +]]) + +echo "" +if test -z "$AWK"; then +echo "!!! Since you have no awk you must copy the files 'comm.h.dist'" +echo "!!! and 'term.h.dist' to 'comm.h' and 'term.h'." +echo "!!! Do _not_ change the user configuration section in config.h!" +echo "Please check the pathnames in the Makefile." +else +echo "Now please check the pathnames in the Makefile and in the user" +echo "configuration section in config.h." +fi +echo "Then type 'make' to make screen. Good luck." +echo "" |