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authorwart <wart>1999-06-16 20:17:35 (GMT)
committerwart <wart>1999-06-16 20:17:35 (GMT)
commitc59020a570e9b91cf77bd4c487591045bcdb7de9 (patch)
tree88f0332ee290c968c4e645e42ed064abddb06ad7
parentfdff0f9c3a91c3c0f7190f9b86af147de68eec29 (diff)
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Reorganized the order of the macros (cosmetic change)
-rw-r--r--unix/tcl.m41354
1 files changed, 678 insertions, 676 deletions
diff --git a/unix/tcl.m4 b/unix/tcl.m4
index 4a8b9fd..e78daaa 100644
--- a/unix/tcl.m4
+++ b/unix/tcl.m4
@@ -13,7 +13,8 @@
# --with-tcl=...
#
# Defines the following vars:
-# TCL_BIN_DIR Full path to the tclConfig.sh file
+# TCL_BIN_DIR Full path to the directory containing
+# the tclConfig.sh file
#------------------------------------------------------------------------
AC_DEFUN(SC_PATH_TCLCONFIG, [
@@ -106,80 +107,81 @@ fi
# --with-tk=...
#
# Defines the following vars:
-# TK_BIN_DIR Full path to the tkConfig.sh file
+# TK_BIN_DIR Full path to the directory containing
+# the tkConfig.sh file
#------------------------------------------------------------------------
AC_DEFUN(SC_PATH_TKCONFIG, [
-#
-# Ok, lets find the tk configuration
-# First, look for one uninstalled.
-# the alternative search directory is invoked by --with-tk
-#
+ #
+ # Ok, lets find the tk configuration
+ # First, look for one uninstalled.
+ # the alternative search directory is invoked by --with-tk
+ #
-if test x"${no_tk}" = x ; then
- # we reset no_tk in case something fails here
- no_tk=true
- AC_ARG_WITH(tk, [ --with-tk directory containing tk configuration (tkConfig.sh)],
- with_tkconfig=${withval})
- AC_MSG_CHECKING([for Tk configuration])
- AC_CACHE_VAL(ac_cv_c_tkconfig,[
+ if test x"${no_tk}" = x ; then
+ # we reset no_tk in case something fails here
+ no_tk=true
+ AC_ARG_WITH(tk, [ --with-tk directory containing tk configuration (tkConfig.sh)],
+ with_tkconfig=${withval})
+ AC_MSG_CHECKING([for Tk configuration])
+ AC_CACHE_VAL(ac_cv_c_tkconfig,[
+
+ # First check to see if --with-tkconfig was specified.
+ if test x"${with_tkconfig}" != x ; then
+ if test -f "${with_tkconfig}/tkConfig.sh" ; then
+ ac_cv_c_tkconfig=`(cd ${with_tkconfig}; pwd)`
+ else
+ AC_MSG_ERROR([${with_tkconfig} directory doesn't contain tkConfig.sh])
+ fi
+ fi
- # First check to see if --with-tkconfig was specified.
- if test x"${with_tkconfig}" != x ; then
- if test -f "${with_tkconfig}/tkConfig.sh" ; then
- ac_cv_c_tkconfig=`(cd ${with_tkconfig}; pwd)`
- else
- AC_MSG_ERROR([${with_tkconfig} directory doesn't contain tkConfig.sh])
+ # then check for a private Tk library
+ if test x"${ac_cv_c_tkconfig}" = x ; then
+ for i in \
+ ../tk \
+ `ls -dr ../tk[[8-9]].[[0-9]]* 2>/dev/null` \
+ ../../tk \
+ `ls -dr ../../tk[[8-9]].[[0-9]]* 2>/dev/null` \
+ ../../../tk \
+ `ls -dr ../../../tk[[8-9]].[[0-9]]* 2>/dev/null` ; do
+ if test -f "$i/unix/tkConfig.sh" ; then
+ ac_cv_c_tkconfig=`(cd $i/unix; pwd)`
+ break
+ fi
+ done
+ fi
+ # check in a few common install locations
+ if test x"${ac_cv_c_tkconfig}" = x ; then
+ for i in `ls -d ${prefix}/lib 2>/dev/null` \
+ `ls -d /usr/local/lib 2>/dev/null` ; do
+ if test -f "$i/tkConfig.sh" ; then
+ ac_cv_c_tkconfig=`(cd $i; pwd)`
+ break
+ fi
+ done
+ fi
+ # check in a few other private locations
+ if test x"${ac_cv_c_tkconfig}" = x ; then
+ for i in \
+ ${srcdir}/../tk \
+ `ls -dr ${srcdir}/../tk[[8-9]].[[0-9]]* 2>/dev/null` ; do
+ if test -f "$i/unix/tkConfig.sh" ; then
+ ac_cv_c_tkconfig=`(cd $i/unix; pwd)`
+ break
+ fi
+ done
+ fi
+ ])
+ if test x"${ac_cv_c_tkconfig}" = x ; then
+ TK_BIN_DIR="# no Tk configs found"
+ AC_MSG_WARN(Can't find Tk configuration definitions)
+ exit 0
+ else
+ no_tk=
+ TK_BIN_DIR=${ac_cv_c_tkconfig}
+ AC_MSG_RESULT(found $TK_BIN_DIR/tkConfig.sh)
+ fi
fi
- fi
-
- # then check for a private Tk library
- if test x"${ac_cv_c_tkconfig}" = x ; then
- for i in \
- ../tk \
- `ls -dr ../tk[[8-9]].[[0-9]]* 2>/dev/null` \
- ../../tk \
- `ls -dr ../../tk[[8-9]].[[0-9]]* 2>/dev/null` \
- ../../../tk \
- `ls -dr ../../../tk[[8-9]].[[0-9]]* 2>/dev/null` ; do
- if test -f "$i/unix/tkConfig.sh" ; then
- ac_cv_c_tkconfig=`(cd $i/unix; pwd)`
- break
- fi
- done
- fi
- # check in a few common install locations
- if test x"${ac_cv_c_tkconfig}" = x ; then
- for i in `ls -d ${prefix}/lib 2>/dev/null` \
- `ls -d /usr/local/lib 2>/dev/null` ; do
- if test -f "$i/tkConfig.sh" ; then
- ac_cv_c_tkconfig=`(cd $i; pwd)`
- break
- fi
- done
- fi
- # check in a few other private locations
- if test x"${ac_cv_c_tkconfig}" = x ; then
- for i in \
- ${srcdir}/../tk \
- `ls -dr ${srcdir}/../tk[[8-9]].[[0-9]]* 2>/dev/null` ; do
- if test -f "$i/unix/tkConfig.sh" ; then
- ac_cv_c_tkconfig=`(cd $i/unix; pwd)`
- break
- fi
- done
- fi
- ])
- if test x"${ac_cv_c_tkconfig}" = x ; then
- TK_BIN_DIR="# no Tk configs found"
- AC_MSG_WARN(Can't find Tk configuration definitions)
- exit 0
- else
- no_tk=
- TK_BIN_DIR=${ac_cv_c_tkconfig}
- AC_MSG_RESULT(found $TK_BIN_DIR/tkConfig.sh)
- fi
-fi
])
@@ -419,613 +421,6 @@ AC_DEFUN(SC_ENABLE_SYMBOLS, [
])
#--------------------------------------------------------------------
-# SC_SERIAL_PORT
-#
-# Determine which interface to use to talk to the serial port.
-# Note that #include lines must begin in leftmost column for
-# some compilers to recognize them as preprocessor directives.
-#
-# Arguments:
-# none
-#
-# Results:
-#
-# Defines only one of the following vars:
-# USE_TERMIOS
-# USE_TERMIO
-# USE_SGTTY
-#
-#--------------------------------------------------------------------
-
-AC_DEFUN(SC_SERIAL_PORT, [
- AC_MSG_CHECKING([termios vs. termio vs. sgtty])
-
- AC_TRY_RUN([
-#include <termios.h>
-
-main()
-{
- struct termios t;
- if (tcgetattr(0, &t) == 0) {
- cfsetospeed(&t, 0);
- t.c_cflag |= PARENB | PARODD | CSIZE | CSTOPB;
- return 0;
- }
- return 1;
-}], tk_ok=termios, tk_ok=no, tk_ok=no)
-
- if test $tk_ok = termios; then
- AC_DEFINE(USE_TERMIOS)
- else
- AC_TRY_RUN([
-#include <termio.h>
-
-main()
-{
- struct termio t;
- if (ioctl(0, TCGETA, &t) == 0) {
- t.c_cflag |= CBAUD | PARENB | PARODD | CSIZE | CSTOPB;
- return 0;
- }
- return 1;
- }], tk_ok=termio, tk_ok=no, tk_ok=no)
-
- if test $tk_ok = termio; then
- AC_DEFINE(USE_TERMIO)
- else
- AC_TRY_RUN([
-#include <sgtty.h>
-
-main()
-{
- struct sgttyb t;
- if (ioctl(0, TIOCGETP, &t) == 0) {
- t.sg_ospeed = 0;
- t.sg_flags |= ODDP | EVENP | RAW;
- return 0;
- }
- return 1;
-}], tk_ok=sgtty, tk_ok=none, tk_ok=none)
- if test $tk_ok = sgtty; then
- AC_DEFINE(USE_SGTTY)
- fi
- fi
- fi
- AC_MSG_RESULT($tk_ok)
-])
-
-#--------------------------------------------------------------------
-# SC_MISSING_POSIX_HEADERS
-#
-# Supply substitutes for missing POSIX header files. Special
-# notes:
-# - stdlib.h doesn't define strtol, strtoul, or
-# strtod insome versions of SunOS
-# - some versions of string.h don't declare procedures such
-# as strstr
-#
-# Arguments:
-# none
-#
-# Results:
-#
-# Defines some of the following vars:
-# NO_DIRENT_H
-# NO_ERRNO_H
-# NO_VALUES_H
-# NO_LIMITS_H
-# NO_STDLIB_H
-# NO_STRING_H
-# NO_SYS_WAIT_H
-# NO_DLFCN_H
-# HAVE_UNISTD_H
-# HAVE_SYS_PARAM_H
-#
-# HAVE_STRING_H ?
-#
-#--------------------------------------------------------------------
-
-AC_DEFUN(SC_MISSING_POSIX_HEADERS, [
-
- AC_MSG_CHECKING(dirent.h)
- AC_TRY_LINK([#include <sys/types.h>
-#include <dirent.h>], [
-#ifndef _POSIX_SOURCE
-# ifdef __Lynx__
- /*
- * Generate compilation error to make the test fail: Lynx headers
- * are only valid if really in the POSIX environment.
- */
-
- missing_procedure();
-# endif
-#endif
-DIR *d;
-struct dirent *entryPtr;
-char *p;
-d = opendir("foobar");
-entryPtr = readdir(d);
-p = entryPtr->d_name;
-closedir(d);
-], tcl_ok=yes, tcl_ok=no)
-
- if test $tcl_ok = no; then
- AC_DEFINE(NO_DIRENT_H)
- fi
-
- AC_MSG_RESULT($tcl_ok)
- AC_CHECK_HEADER(errno.h, , AC_DEFINE(NO_ERRNO_H))
- AC_CHECK_HEADER(float.h, , AC_DEFINE(NO_FLOAT_H))
- AC_CHECK_HEADER(values.h, , AC_DEFINE(NO_VALUES_H))
- AC_CHECK_HEADER(limits.h, , AC_DEFINE(NO_LIMITS_H))
- AC_CHECK_HEADER(stdlib.h, tcl_ok=1, tcl_ok=0)
- AC_EGREP_HEADER(strtol, stdlib.h, , tcl_ok=0)
- AC_EGREP_HEADER(strtoul, stdlib.h, , tcl_ok=0)
- AC_EGREP_HEADER(strtod, stdlib.h, , tcl_ok=0)
- if test $tcl_ok = 0; then
- AC_DEFINE(NO_STDLIB_H)
- fi
- AC_CHECK_HEADER(string.h, tcl_ok=1, tcl_ok=0)
- AC_EGREP_HEADER(strstr, string.h, , tcl_ok=0)
- AC_EGREP_HEADER(strerror, string.h, , tcl_ok=0)
-
- # See also memmove check below for a place where NO_STRING_H can be
- # set and why.
-
- if test $tcl_ok = 0; then
- AC_DEFINE(NO_STRING_H)
- fi
-
- AC_CHECK_HEADER(sys/wait.h, , AC_DEFINE(NO_SYS_WAIT_H))
- AC_CHECK_HEADER(dlfcn.h, , AC_DEFINE(NO_DLFCN_H))
-
- # OS/390 lacks sys/param.h (and doesn't need it, by chance).
-
- AC_HAVE_HEADERS(unistd.h sys/param.h)
-
-])
-
-#--------------------------------------------------------------------
-# SC_PATH_X
-#
-# Locate the X11 header files and the X11 library archive. Try
-# the ac_path_x macro first, but if it doesn't find the X stuff
-# (e.g. because there's no xmkmf program) then check through
-# a list of possible directories. Under some conditions the
-# autoconf macro will return an include directory that contains
-# no include files, so double-check its result just to be safe.
-#
-# Arguments:
-# none
-#
-# Results:
-#
-# Sets the the following vars:
-# XINCLUDES
-# XLIBSW
-#
-#--------------------------------------------------------------------
-
-AC_DEFUN(SC_PATH_X, [
- AC_PATH_X
- not_really_there=""
- if test "$no_x" = ""; then
- if test "$x_includes" = ""; then
- AC_TRY_CPP([#include <X11/XIntrinsic.h>], , not_really_there="yes")
- else
- if test ! -r $x_includes/X11/Intrinsic.h; then
- not_really_there="yes"
- fi
- fi
- fi
- if test "$no_x" = "yes" -o "$not_really_there" = "yes"; then
- AC_MSG_CHECKING(for X11 header files)
- XINCLUDES="# no special path needed"
- AC_TRY_CPP([#include <X11/Intrinsic.h>], , XINCLUDES="nope")
- if test "$XINCLUDES" = nope; then
- dirs="/usr/unsupported/include /usr/local/include /usr/X386/include /usr/X11R6/include /usr/X11R5/include /usr/include/X11R5 /usr/include/X11R4 /usr/openwin/include /usr/X11/include /usr/sww/include"
- for i in $dirs ; do
- if test -r $i/X11/Intrinsic.h; then
- AC_MSG_RESULT($i)
- XINCLUDES=" -I$i"
- break
- fi
- done
- fi
- else
- if test "$x_includes" != ""; then
- XINCLUDES=-I$x_includes
- else
- XINCLUDES="# no special path needed"
- fi
- fi
- if test "$XINCLUDES" = nope; then
- AC_MSG_RESULT(couldn't find any!)
- XINCLUDES="# no include files found"
- fi
-
- if test "$no_x" = yes; then
- AC_MSG_CHECKING(for X11 libraries)
- XLIBSW=nope
- dirs="/usr/unsupported/lib /usr/local/lib /usr/X386/lib /usr/X11R6/lib /usr/X11R5/lib /usr/lib/X11R5 /usr/lib/X11R4 /usr/openwin/lib /usr/X11/lib /usr/sww/X11/lib"
- for i in $dirs ; do
- if test -r $i/libX11.a -o -r $i/libX11.so -o -r $i/libX11.sl; then
- AC_MSG_RESULT($i)
- XLIBSW="-L$i -lX11"
- x_libraries="$i"
- break
- fi
- done
- else
- if test "$x_libraries" = ""; then
- XLIBSW=-lX11
- else
- XLIBSW="-L$x_libraries -lX11"
- fi
- fi
- if test "$XLIBSW" = nope ; then
- AC_CHECK_LIB(Xwindow, XCreateWindow, XLIBSW=-lXwindow)
- fi
- if test "$XLIBSW" = nope ; then
- AC_MSG_RESULT(couldn't find any! Using -lX11.)
- XLIBSW=-lX11
- fi
-])
-#--------------------------------------------------------------------
-# SC_BLOCKING_STYLE
-#
-# The statements below check for systems where POSIX-style
-# non-blocking I/O (O_NONBLOCK) doesn't work or is unimplemented.
-# On these systems (mostly older ones), use the old BSD-style
-# FIONBIO approach instead.
-#
-# Arguments:
-# none
-#
-# Results:
-#
-# Defines some of the following vars:
-# HAVE_SYS_IOCTL_H
-# HAVE_SYS_FILIO_H
-# USE_FIONBIO
-# O_NONBLOCK
-#
-#--------------------------------------------------------------------
-
-AC_DEFUN(SC_BLOCKING_STYLE, [
- AC_CHECK_HEADERS(sys/ioctl.h)
- AC_CHECK_HEADERS(sys/filio.h)
- AC_MSG_CHECKING([FIONBIO vs. O_NONBLOCK for nonblocking I/O])
- if test -f /usr/lib/NextStep/software_version; then
- system=NEXTSTEP-`awk '/3/,/3/' /usr/lib/NextStep/software_version`
- else
- system=`uname -s`-`uname -r`
- if test "$?" -ne 0 ; then
- system=unknown
- else
- # Special check for weird MP-RAS system (uname returns weird
- # results, and the version is kept in special file).
-
- if test -r /etc/.relid -a "X`uname -n`" = "X`uname -s`" ; then
- system=MP-RAS-`awk '{print $3}' /etc/.relid'`
- fi
- if test "`uname -s`" = "AIX" ; then
- system=AIX-`uname -v`.`uname -r`
- fi
- fi
- fi
- case $system in
- # There used to be code here to use FIONBIO under AIX. However, it
- # was reported that FIONBIO doesn't work under AIX 3.2.5. Since
- # using O_NONBLOCK seems fine under AIX 4.*, I removed the FIONBIO
- # code (JO, 5/31/97).
-
- OSF*)
- AC_DEFINE(USE_FIONBIO)
- AC_MSG_RESULT(FIONBIO)
- ;;
- SunOS-4*)
- AC_DEFINE(USE_FIONBIO)
- AC_MSG_RESULT(FIONBIO)
- ;;
- ULTRIX-4.*)
- AC_DEFINE(USE_FIONBIO)
- AC_MSG_RESULT(FIONBIO)
- ;;
- *)
- AC_MSG_RESULT(O_NONBLOCK)
- ;;
- esac
-])
-
-#--------------------------------------------------------------------
-# SC_HAVE_VFORK
-#
-# Check to see whether the system provides a vfork kernel call.
-# If not, then use fork instead. Also, check for a problem with
-# vforks and signals that can cause core dumps if a vforked child
-# resets a signal handler. If the problem exists, then use fork
-# instead of vfork.
-#
-# Arguments:
-# none
-#
-# Results:
-#
-# Defines some of the following vars:
-# vfork (=fork)
-#
-#--------------------------------------------------------------------
-
-AC_DEFUN(SC_HAVE_VFORK, [
- AC_TYPE_SIGNAL()
- AC_CHECK_FUNC(vfork, tcl_ok=1, tcl_ok=0)
- if test "$tcl_ok" = 1; then
- AC_MSG_CHECKING([vfork/signal bug]);
- AC_TRY_RUN([
-#include <stdio.h>
-#include <signal.h>
-#include <sys/wait.h>
-int gotSignal = 0;
-sigProc(sig)
- int sig;
-{
- gotSignal = 1;
-}
-main()
-{
- int pid, sts;
- (void) signal(SIGCHLD, sigProc);
- pid = vfork();
- if (pid < 0) {
- exit(1);
- } else if (pid == 0) {
- (void) signal(SIGCHLD, SIG_DFL);
- _exit(0);
- } else {
- (void) wait(&sts);
- }
- exit((gotSignal) ? 0 : 1);
-}], tcl_ok=1, tcl_ok=0, tcl_ok=0)
-
- if test "$tcl_ok" = 1; then
- AC_MSG_RESULT(ok)
- else
- AC_MSG_RESULT([buggy, using fork instead])
- fi
- fi
- rm -f core
- if test "$tcl_ok" = 0; then
- AC_DEFINE(vfork, fork)
- fi
-])
-
-#--------------------------------------------------------------------
-# SC_TIME_HANLDER
-#
-# Checks how the system deals with time.h, what time structures
-# are used on the system, and what fields the structures have.
-#
-# Arguments:
-# none
-#
-# Results:
-#
-# Defines some of the following vars:
-# USE_DELTA_FOR_TZ
-# HAVE_TM_GMTOFF
-# HAVE_TM_TZADJ
-# HAVE_TIMEZONE_VAR
-#
-#--------------------------------------------------------------------
-
-AC_DEFUN(SC_TIME_HANDLER, [
- AC_CHECK_HEADERS(sys/time.h)
- AC_HEADER_TIME
- AC_STRUCT_TIMEZONE
-
- AC_MSG_CHECKING([tm_tzadj in struct tm])
- AC_TRY_COMPILE([#include <time.h>], [struct tm tm; tm.tm_tzadj;],
- [AC_DEFINE(HAVE_TM_TZADJ)
- AC_MSG_RESULT(yes)],
- AC_MSG_RESULT(no))
-
- AC_MSG_CHECKING([tm_gmtoff in struct tm])
- AC_TRY_COMPILE([#include <time.h>], [struct tm tm; tm.tm_gmtoff;],
- [AC_DEFINE(HAVE_TM_GMTOFF)
- AC_MSG_RESULT(yes)],
- AC_MSG_RESULT(no))
-
- #
- # Its important to include time.h in this check, as some systems
- # (like convex) have timezone functions, etc.
- #
- have_timezone=no
- AC_MSG_CHECKING([long timezone variable])
- AC_TRY_COMPILE([#include <time.h>],
- [extern long timezone;
- timezone += 1;
- exit (0);],
- [have_timezone=yes
- AC_DEFINE(HAVE_TIMEZONE_VAR)
- AC_MSG_RESULT(yes)],
- AC_MSG_RESULT(no))
-
- #
- # On some systems (eg IRIX 6.2), timezone is a time_t and not a long.
- #
- if test "$have_timezone" = no; then
- AC_MSG_CHECKING([time_t timezone variable])
- AC_TRY_COMPILE([#include <time.h>],
- [extern time_t timezone;
- timezone += 1;
- exit (0);],
- [AC_DEFINE(HAVE_TIMEZONE_VAR)
- AC_MSG_RESULT(yes)],
- AC_MSG_RESULT(no))
- fi
-
- #
- # AIX does not have a timezone field in struct tm. When the AIX bsd
- # library is used, the timezone global and the gettimeofday methods are
- # to be avoided for timezone deduction instead, we deduce the timezone
- # by comparing the localtime result on a known GMT value.
- #
-
- if test "`uname -s`" = "AIX" ; then
- AC_CHECK_LIB(bsd, gettimeofday, libbsd=yes)
- if test $libbsd = yes; then
- AC_DEFINE(USE_DELTA_FOR_TZ)
- fi
- fi
-])
-
-#--------------------------------------------------------------------
-# SC_BUGGY_STRTOD
-#
-# Under Solaris 2.4, strtod returns the wrong value for the
-# terminating character under some conditions. Check for this
-# and if the problem exists use a substitute procedure
-# "fixstrtod" (provided by Tcl) that corrects the error.
-#
-# Arguments:
-# none
-#
-# Results:
-#
-# Might defines some of the following vars:
-# strtod (=fixstrtod)
-#
-#--------------------------------------------------------------------
-
-AC_DEFUN(SC_BUGGY_STRTOD, [
- AC_CHECK_FUNC(strtod, tk_strtod=1, tk_strtod=0)
- if test "$tk_strtod" = 1; then
- AC_MSG_CHECKING([for Solaris 2.4 strtod bug])
- AC_TRY_RUN([
- extern double strtod();
- int main()
- {
- char *string = "NaN";
- char *term;
- strtod(string, &term);
- if ((term != string) && (term[-1] == 0)) {
- exit(1);
- }
- exit(0);
- }], tk_ok=1, tk_ok=0, tk_ok=0)
- if test "$tk_ok" = 1; then
- AC_MSG_RESULT(ok)
- else
- AC_MSG_RESULT(buggy)
- AC_DEFINE(strtod, fixstrtod)
- fi
- fi
-])
-
-#--------------------------------------------------------------------
-# SC_TCL_LINK_LIBS
-#
-# Search for the libraries needed to link the Tcl shell.
-# Things like the math library (-lm) and socket stuff (-lsocket vs.
-# -lnsl) are dealt with here.
-#
-# Arguments:
-# Requires the following vars to be set in the Makefile:
-# DL_LIBS
-# LIBS
-# MATH_LIBS
-#
-# Results:
-#
-# Subst's the following var:
-# TCL_LIBS
-# MATH_LIBS
-#
-# Might append to the following vars:
-# LIBS
-#
-# Might define the following vars:
-# HAVE_NET_ERRNO_H
-#
-#--------------------------------------------------------------------
-
-AC_DEFUN(SC_TCL_LINK_LIBS, [
- #--------------------------------------------------------------------
- # On a few very rare systems, all of the libm.a stuff is
- # already in libc.a. Set compiler flags accordingly.
- # Also, Linux requires the "ieee" library for math to work
- # right (and it must appear before "-lm").
- #--------------------------------------------------------------------
-
- AC_CHECK_FUNC(sin, MATH_LIBS="", MATH_LIBS="-lm")
- AC_CHECK_LIB(ieee, main, [MATH_LIBS="-lieee $MATH_LIBS"])
-
- #--------------------------------------------------------------------
- # On AIX systems, libbsd.a has to be linked in to support
- # non-blocking file IO. This library has to be linked in after
- # the MATH_LIBS or it breaks the pow() function. The way to
- # insure proper sequencing, is to add it to the tail of MATH_LIBS.
- # This library also supplies gettimeofday.
- #--------------------------------------------------------------------
-
- libbsd=no
- if test "`uname -s`" = "AIX" ; then
- AC_CHECK_LIB(bsd, gettimeofday, libbsd=yes)
- if test $libbsd = yes; then
- MATH_LIBS="$MATH_LIBS -lbsd"
- fi
- fi
-
-
- #--------------------------------------------------------------------
- # Interactive UNIX requires -linet instead of -lsocket, plus it
- # needs net/errno.h to define the socket-related error codes.
- #--------------------------------------------------------------------
-
- AC_CHECK_LIB(inet, main, [LIBS="$LIBS -linet"])
- AC_CHECK_HEADER(net/errno.h, AC_DEFINE(HAVE_NET_ERRNO_H))
-
- #--------------------------------------------------------------------
- # Check for the existence of the -lsocket and -lnsl libraries.
- # The order here is important, so that they end up in the right
- # order in the command line generated by make. Here are some
- # special considerations:
- # 1. Use "connect" and "accept" to check for -lsocket, and
- # "gethostbyname" to check for -lnsl.
- # 2. Use each function name only once: can't redo a check because
- # autoconf caches the results of the last check and won't redo it.
- # 3. Use -lnsl and -lsocket only if they supply procedures that
- # aren't already present in the normal libraries. This is because
- # IRIX 5.2 has libraries, but they aren't needed and they're
- # bogus: they goof up name resolution if used.
- # 4. On some SVR4 systems, can't use -lsocket without -lnsl too.
- # To get around this problem, check for both libraries together
- # if -lsocket doesn't work by itself.
- #--------------------------------------------------------------------
-
- tcl_checkBoth=0
- AC_CHECK_FUNC(connect, tcl_checkSocket=0, tcl_checkSocket=1)
- if test "$tcl_checkSocket" = 1; then
- AC_CHECK_LIB(socket, main, LIBS="$LIBS -lsocket", tcl_checkBoth=1)
- fi
- if test "$tcl_checkBoth" = 1; then
- tk_oldLibs=$LIBS
- LIBS="$LIBS -lsocket -lnsl"
- AC_CHECK_FUNC(accept, tcl_checkNsl=0, [LIBS=$tk_oldLibs])
- fi
- AC_CHECK_FUNC(gethostbyname, , AC_CHECK_LIB(nsl, main,
- [LIBS="$LIBS -lnsl"]))
-
- # Don't perform the eval of the libraries here because DL_LIBS
- # won't be set until we call SC_CONFIG_CFLAGS
-
- TCL_LIBS='${DL_LIBS} ${LIBS} ${MATH_LIBS}'
- AC_SUBST(TCL_LIBS)
- AC_SUBST(MATH_LIBS)
-])
-
-#--------------------------------------------------------------------
# SC_CONFIG_CFLAGS
#
# Try to determine the proper flags to pass to the compiler
@@ -1683,3 +1078,610 @@ AC_DEFUN(SC_CONFIG_CFLAGS, [
AC_SUBST(CFLAGS_DEBUG)
AC_SUBST(CFLAGS_OPTIMIZE)
])
+
+#--------------------------------------------------------------------
+# SC_SERIAL_PORT
+#
+# Determine which interface to use to talk to the serial port.
+# Note that #include lines must begin in leftmost column for
+# some compilers to recognize them as preprocessor directives.
+#
+# Arguments:
+# none
+#
+# Results:
+#
+# Defines only one of the following vars:
+# USE_TERMIOS
+# USE_TERMIO
+# USE_SGTTY
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN(SC_SERIAL_PORT, [
+ AC_MSG_CHECKING([termios vs. termio vs. sgtty])
+
+ AC_TRY_RUN([
+#include <termios.h>
+
+main()
+{
+ struct termios t;
+ if (tcgetattr(0, &t) == 0) {
+ cfsetospeed(&t, 0);
+ t.c_cflag |= PARENB | PARODD | CSIZE | CSTOPB;
+ return 0;
+ }
+ return 1;
+}], tk_ok=termios, tk_ok=no, tk_ok=no)
+
+ if test $tk_ok = termios; then
+ AC_DEFINE(USE_TERMIOS)
+ else
+ AC_TRY_RUN([
+#include <termio.h>
+
+main()
+{
+ struct termio t;
+ if (ioctl(0, TCGETA, &t) == 0) {
+ t.c_cflag |= CBAUD | PARENB | PARODD | CSIZE | CSTOPB;
+ return 0;
+ }
+ return 1;
+ }], tk_ok=termio, tk_ok=no, tk_ok=no)
+
+ if test $tk_ok = termio; then
+ AC_DEFINE(USE_TERMIO)
+ else
+ AC_TRY_RUN([
+#include <sgtty.h>
+
+main()
+{
+ struct sgttyb t;
+ if (ioctl(0, TIOCGETP, &t) == 0) {
+ t.sg_ospeed = 0;
+ t.sg_flags |= ODDP | EVENP | RAW;
+ return 0;
+ }
+ return 1;
+}], tk_ok=sgtty, tk_ok=none, tk_ok=none)
+ if test $tk_ok = sgtty; then
+ AC_DEFINE(USE_SGTTY)
+ fi
+ fi
+ fi
+ AC_MSG_RESULT($tk_ok)
+])
+
+#--------------------------------------------------------------------
+# SC_MISSING_POSIX_HEADERS
+#
+# Supply substitutes for missing POSIX header files. Special
+# notes:
+# - stdlib.h doesn't define strtol, strtoul, or
+# strtod insome versions of SunOS
+# - some versions of string.h don't declare procedures such
+# as strstr
+#
+# Arguments:
+# none
+#
+# Results:
+#
+# Defines some of the following vars:
+# NO_DIRENT_H
+# NO_ERRNO_H
+# NO_VALUES_H
+# NO_LIMITS_H
+# NO_STDLIB_H
+# NO_STRING_H
+# NO_SYS_WAIT_H
+# NO_DLFCN_H
+# HAVE_UNISTD_H
+# HAVE_SYS_PARAM_H
+#
+# HAVE_STRING_H ?
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN(SC_MISSING_POSIX_HEADERS, [
+
+ AC_MSG_CHECKING(dirent.h)
+ AC_TRY_LINK([#include <sys/types.h>
+#include <dirent.h>], [
+#ifndef _POSIX_SOURCE
+# ifdef __Lynx__
+ /*
+ * Generate compilation error to make the test fail: Lynx headers
+ * are only valid if really in the POSIX environment.
+ */
+
+ missing_procedure();
+# endif
+#endif
+DIR *d;
+struct dirent *entryPtr;
+char *p;
+d = opendir("foobar");
+entryPtr = readdir(d);
+p = entryPtr->d_name;
+closedir(d);
+], tcl_ok=yes, tcl_ok=no)
+
+ if test $tcl_ok = no; then
+ AC_DEFINE(NO_DIRENT_H)
+ fi
+
+ AC_MSG_RESULT($tcl_ok)
+ AC_CHECK_HEADER(errno.h, , AC_DEFINE(NO_ERRNO_H))
+ AC_CHECK_HEADER(float.h, , AC_DEFINE(NO_FLOAT_H))
+ AC_CHECK_HEADER(values.h, , AC_DEFINE(NO_VALUES_H))
+ AC_CHECK_HEADER(limits.h, , AC_DEFINE(NO_LIMITS_H))
+ AC_CHECK_HEADER(stdlib.h, tcl_ok=1, tcl_ok=0)
+ AC_EGREP_HEADER(strtol, stdlib.h, , tcl_ok=0)
+ AC_EGREP_HEADER(strtoul, stdlib.h, , tcl_ok=0)
+ AC_EGREP_HEADER(strtod, stdlib.h, , tcl_ok=0)
+ if test $tcl_ok = 0; then
+ AC_DEFINE(NO_STDLIB_H)
+ fi
+ AC_CHECK_HEADER(string.h, tcl_ok=1, tcl_ok=0)
+ AC_EGREP_HEADER(strstr, string.h, , tcl_ok=0)
+ AC_EGREP_HEADER(strerror, string.h, , tcl_ok=0)
+
+ # See also memmove check below for a place where NO_STRING_H can be
+ # set and why.
+
+ if test $tcl_ok = 0; then
+ AC_DEFINE(NO_STRING_H)
+ fi
+
+ AC_CHECK_HEADER(sys/wait.h, , AC_DEFINE(NO_SYS_WAIT_H))
+ AC_CHECK_HEADER(dlfcn.h, , AC_DEFINE(NO_DLFCN_H))
+
+ # OS/390 lacks sys/param.h (and doesn't need it, by chance).
+
+ AC_HAVE_HEADERS(unistd.h sys/param.h)
+
+])
+
+#--------------------------------------------------------------------
+# SC_PATH_X
+#
+# Locate the X11 header files and the X11 library archive. Try
+# the ac_path_x macro first, but if it doesn't find the X stuff
+# (e.g. because there's no xmkmf program) then check through
+# a list of possible directories. Under some conditions the
+# autoconf macro will return an include directory that contains
+# no include files, so double-check its result just to be safe.
+#
+# Arguments:
+# none
+#
+# Results:
+#
+# Sets the the following vars:
+# XINCLUDES
+# XLIBSW
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN(SC_PATH_X, [
+ AC_PATH_X
+ not_really_there=""
+ if test "$no_x" = ""; then
+ if test "$x_includes" = ""; then
+ AC_TRY_CPP([#include <X11/XIntrinsic.h>], , not_really_there="yes")
+ else
+ if test ! -r $x_includes/X11/Intrinsic.h; then
+ not_really_there="yes"
+ fi
+ fi
+ fi
+ if test "$no_x" = "yes" -o "$not_really_there" = "yes"; then
+ AC_MSG_CHECKING(for X11 header files)
+ XINCLUDES="# no special path needed"
+ AC_TRY_CPP([#include <X11/Intrinsic.h>], , XINCLUDES="nope")
+ if test "$XINCLUDES" = nope; then
+ dirs="/usr/unsupported/include /usr/local/include /usr/X386/include /usr/X11R6/include /usr/X11R5/include /usr/include/X11R5 /usr/include/X11R4 /usr/openwin/include /usr/X11/include /usr/sww/include"
+ for i in $dirs ; do
+ if test -r $i/X11/Intrinsic.h; then
+ AC_MSG_RESULT($i)
+ XINCLUDES=" -I$i"
+ break
+ fi
+ done
+ fi
+ else
+ if test "$x_includes" != ""; then
+ XINCLUDES=-I$x_includes
+ else
+ XINCLUDES="# no special path needed"
+ fi
+ fi
+ if test "$XINCLUDES" = nope; then
+ AC_MSG_RESULT(couldn't find any!)
+ XINCLUDES="# no include files found"
+ fi
+
+ if test "$no_x" = yes; then
+ AC_MSG_CHECKING(for X11 libraries)
+ XLIBSW=nope
+ dirs="/usr/unsupported/lib /usr/local/lib /usr/X386/lib /usr/X11R6/lib /usr/X11R5/lib /usr/lib/X11R5 /usr/lib/X11R4 /usr/openwin/lib /usr/X11/lib /usr/sww/X11/lib"
+ for i in $dirs ; do
+ if test -r $i/libX11.a -o -r $i/libX11.so -o -r $i/libX11.sl; then
+ AC_MSG_RESULT($i)
+ XLIBSW="-L$i -lX11"
+ x_libraries="$i"
+ break
+ fi
+ done
+ else
+ if test "$x_libraries" = ""; then
+ XLIBSW=-lX11
+ else
+ XLIBSW="-L$x_libraries -lX11"
+ fi
+ fi
+ if test "$XLIBSW" = nope ; then
+ AC_CHECK_LIB(Xwindow, XCreateWindow, XLIBSW=-lXwindow)
+ fi
+ if test "$XLIBSW" = nope ; then
+ AC_MSG_RESULT(couldn't find any! Using -lX11.)
+ XLIBSW=-lX11
+ fi
+])
+#--------------------------------------------------------------------
+# SC_BLOCKING_STYLE
+#
+# The statements below check for systems where POSIX-style
+# non-blocking I/O (O_NONBLOCK) doesn't work or is unimplemented.
+# On these systems (mostly older ones), use the old BSD-style
+# FIONBIO approach instead.
+#
+# Arguments:
+# none
+#
+# Results:
+#
+# Defines some of the following vars:
+# HAVE_SYS_IOCTL_H
+# HAVE_SYS_FILIO_H
+# USE_FIONBIO
+# O_NONBLOCK
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN(SC_BLOCKING_STYLE, [
+ AC_CHECK_HEADERS(sys/ioctl.h)
+ AC_CHECK_HEADERS(sys/filio.h)
+ AC_MSG_CHECKING([FIONBIO vs. O_NONBLOCK for nonblocking I/O])
+ if test -f /usr/lib/NextStep/software_version; then
+ system=NEXTSTEP-`awk '/3/,/3/' /usr/lib/NextStep/software_version`
+ else
+ system=`uname -s`-`uname -r`
+ if test "$?" -ne 0 ; then
+ system=unknown
+ else
+ # Special check for weird MP-RAS system (uname returns weird
+ # results, and the version is kept in special file).
+
+ if test -r /etc/.relid -a "X`uname -n`" = "X`uname -s`" ; then
+ system=MP-RAS-`awk '{print $3}' /etc/.relid'`
+ fi
+ if test "`uname -s`" = "AIX" ; then
+ system=AIX-`uname -v`.`uname -r`
+ fi
+ fi
+ fi
+ case $system in
+ # There used to be code here to use FIONBIO under AIX. However, it
+ # was reported that FIONBIO doesn't work under AIX 3.2.5. Since
+ # using O_NONBLOCK seems fine under AIX 4.*, I removed the FIONBIO
+ # code (JO, 5/31/97).
+
+ OSF*)
+ AC_DEFINE(USE_FIONBIO)
+ AC_MSG_RESULT(FIONBIO)
+ ;;
+ SunOS-4*)
+ AC_DEFINE(USE_FIONBIO)
+ AC_MSG_RESULT(FIONBIO)
+ ;;
+ ULTRIX-4.*)
+ AC_DEFINE(USE_FIONBIO)
+ AC_MSG_RESULT(FIONBIO)
+ ;;
+ *)
+ AC_MSG_RESULT(O_NONBLOCK)
+ ;;
+ esac
+])
+
+#--------------------------------------------------------------------
+# SC_HAVE_VFORK
+#
+# Check to see whether the system provides a vfork kernel call.
+# If not, then use fork instead. Also, check for a problem with
+# vforks and signals that can cause core dumps if a vforked child
+# resets a signal handler. If the problem exists, then use fork
+# instead of vfork.
+#
+# Arguments:
+# none
+#
+# Results:
+#
+# Defines some of the following vars:
+# vfork (=fork)
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN(SC_HAVE_VFORK, [
+ AC_TYPE_SIGNAL()
+ AC_CHECK_FUNC(vfork, tcl_ok=1, tcl_ok=0)
+ if test "$tcl_ok" = 1; then
+ AC_MSG_CHECKING([vfork/signal bug]);
+ AC_TRY_RUN([
+#include <stdio.h>
+#include <signal.h>
+#include <sys/wait.h>
+int gotSignal = 0;
+sigProc(sig)
+ int sig;
+{
+ gotSignal = 1;
+}
+main()
+{
+ int pid, sts;
+ (void) signal(SIGCHLD, sigProc);
+ pid = vfork();
+ if (pid < 0) {
+ exit(1);
+ } else if (pid == 0) {
+ (void) signal(SIGCHLD, SIG_DFL);
+ _exit(0);
+ } else {
+ (void) wait(&sts);
+ }
+ exit((gotSignal) ? 0 : 1);
+}], tcl_ok=1, tcl_ok=0, tcl_ok=0)
+
+ if test "$tcl_ok" = 1; then
+ AC_MSG_RESULT(ok)
+ else
+ AC_MSG_RESULT([buggy, using fork instead])
+ fi
+ fi
+ rm -f core
+ if test "$tcl_ok" = 0; then
+ AC_DEFINE(vfork, fork)
+ fi
+])
+
+#--------------------------------------------------------------------
+# SC_TIME_HANLDER
+#
+# Checks how the system deals with time.h, what time structures
+# are used on the system, and what fields the structures have.
+#
+# Arguments:
+# none
+#
+# Results:
+#
+# Defines some of the following vars:
+# USE_DELTA_FOR_TZ
+# HAVE_TM_GMTOFF
+# HAVE_TM_TZADJ
+# HAVE_TIMEZONE_VAR
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN(SC_TIME_HANDLER, [
+ AC_CHECK_HEADERS(sys/time.h)
+ AC_HEADER_TIME
+ AC_STRUCT_TIMEZONE
+
+ AC_MSG_CHECKING([tm_tzadj in struct tm])
+ AC_TRY_COMPILE([#include <time.h>], [struct tm tm; tm.tm_tzadj;],
+ [AC_DEFINE(HAVE_TM_TZADJ)
+ AC_MSG_RESULT(yes)],
+ AC_MSG_RESULT(no))
+
+ AC_MSG_CHECKING([tm_gmtoff in struct tm])
+ AC_TRY_COMPILE([#include <time.h>], [struct tm tm; tm.tm_gmtoff;],
+ [AC_DEFINE(HAVE_TM_GMTOFF)
+ AC_MSG_RESULT(yes)],
+ AC_MSG_RESULT(no))
+
+ #
+ # Its important to include time.h in this check, as some systems
+ # (like convex) have timezone functions, etc.
+ #
+ have_timezone=no
+ AC_MSG_CHECKING([long timezone variable])
+ AC_TRY_COMPILE([#include <time.h>],
+ [extern long timezone;
+ timezone += 1;
+ exit (0);],
+ [have_timezone=yes
+ AC_DEFINE(HAVE_TIMEZONE_VAR)
+ AC_MSG_RESULT(yes)],
+ AC_MSG_RESULT(no))
+
+ #
+ # On some systems (eg IRIX 6.2), timezone is a time_t and not a long.
+ #
+ if test "$have_timezone" = no; then
+ AC_MSG_CHECKING([time_t timezone variable])
+ AC_TRY_COMPILE([#include <time.h>],
+ [extern time_t timezone;
+ timezone += 1;
+ exit (0);],
+ [AC_DEFINE(HAVE_TIMEZONE_VAR)
+ AC_MSG_RESULT(yes)],
+ AC_MSG_RESULT(no))
+ fi
+
+ #
+ # AIX does not have a timezone field in struct tm. When the AIX bsd
+ # library is used, the timezone global and the gettimeofday methods are
+ # to be avoided for timezone deduction instead, we deduce the timezone
+ # by comparing the localtime result on a known GMT value.
+ #
+
+ if test "`uname -s`" = "AIX" ; then
+ AC_CHECK_LIB(bsd, gettimeofday, libbsd=yes)
+ if test $libbsd = yes; then
+ AC_DEFINE(USE_DELTA_FOR_TZ)
+ fi
+ fi
+])
+
+#--------------------------------------------------------------------
+# SC_BUGGY_STRTOD
+#
+# Under Solaris 2.4, strtod returns the wrong value for the
+# terminating character under some conditions. Check for this
+# and if the problem exists use a substitute procedure
+# "fixstrtod" (provided by Tcl) that corrects the error.
+#
+# Arguments:
+# none
+#
+# Results:
+#
+# Might defines some of the following vars:
+# strtod (=fixstrtod)
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN(SC_BUGGY_STRTOD, [
+ AC_CHECK_FUNC(strtod, tk_strtod=1, tk_strtod=0)
+ if test "$tk_strtod" = 1; then
+ AC_MSG_CHECKING([for Solaris 2.4 strtod bug])
+ AC_TRY_RUN([
+ extern double strtod();
+ int main()
+ {
+ char *string = "NaN";
+ char *term;
+ strtod(string, &term);
+ if ((term != string) && (term[-1] == 0)) {
+ exit(1);
+ }
+ exit(0);
+ }], tk_ok=1, tk_ok=0, tk_ok=0)
+ if test "$tk_ok" = 1; then
+ AC_MSG_RESULT(ok)
+ else
+ AC_MSG_RESULT(buggy)
+ AC_DEFINE(strtod, fixstrtod)
+ fi
+ fi
+])
+
+#--------------------------------------------------------------------
+# SC_TCL_LINK_LIBS
+#
+# Search for the libraries needed to link the Tcl shell.
+# Things like the math library (-lm) and socket stuff (-lsocket vs.
+# -lnsl) are dealt with here.
+#
+# Arguments:
+# Requires the following vars to be set in the Makefile:
+# DL_LIBS
+# LIBS
+# MATH_LIBS
+#
+# Results:
+#
+# Subst's the following var:
+# TCL_LIBS
+# MATH_LIBS
+#
+# Might append to the following vars:
+# LIBS
+#
+# Might define the following vars:
+# HAVE_NET_ERRNO_H
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN(SC_TCL_LINK_LIBS, [
+ #--------------------------------------------------------------------
+ # On a few very rare systems, all of the libm.a stuff is
+ # already in libc.a. Set compiler flags accordingly.
+ # Also, Linux requires the "ieee" library for math to work
+ # right (and it must appear before "-lm").
+ #--------------------------------------------------------------------
+
+ AC_CHECK_FUNC(sin, MATH_LIBS="", MATH_LIBS="-lm")
+ AC_CHECK_LIB(ieee, main, [MATH_LIBS="-lieee $MATH_LIBS"])
+
+ #--------------------------------------------------------------------
+ # On AIX systems, libbsd.a has to be linked in to support
+ # non-blocking file IO. This library has to be linked in after
+ # the MATH_LIBS or it breaks the pow() function. The way to
+ # insure proper sequencing, is to add it to the tail of MATH_LIBS.
+ # This library also supplies gettimeofday.
+ #--------------------------------------------------------------------
+
+ libbsd=no
+ if test "`uname -s`" = "AIX" ; then
+ AC_CHECK_LIB(bsd, gettimeofday, libbsd=yes)
+ if test $libbsd = yes; then
+ MATH_LIBS="$MATH_LIBS -lbsd"
+ fi
+ fi
+
+
+ #--------------------------------------------------------------------
+ # Interactive UNIX requires -linet instead of -lsocket, plus it
+ # needs net/errno.h to define the socket-related error codes.
+ #--------------------------------------------------------------------
+
+ AC_CHECK_LIB(inet, main, [LIBS="$LIBS -linet"])
+ AC_CHECK_HEADER(net/errno.h, AC_DEFINE(HAVE_NET_ERRNO_H))
+
+ #--------------------------------------------------------------------
+ # Check for the existence of the -lsocket and -lnsl libraries.
+ # The order here is important, so that they end up in the right
+ # order in the command line generated by make. Here are some
+ # special considerations:
+ # 1. Use "connect" and "accept" to check for -lsocket, and
+ # "gethostbyname" to check for -lnsl.
+ # 2. Use each function name only once: can't redo a check because
+ # autoconf caches the results of the last check and won't redo it.
+ # 3. Use -lnsl and -lsocket only if they supply procedures that
+ # aren't already present in the normal libraries. This is because
+ # IRIX 5.2 has libraries, but they aren't needed and they're
+ # bogus: they goof up name resolution if used.
+ # 4. On some SVR4 systems, can't use -lsocket without -lnsl too.
+ # To get around this problem, check for both libraries together
+ # if -lsocket doesn't work by itself.
+ #--------------------------------------------------------------------
+
+ tcl_checkBoth=0
+ AC_CHECK_FUNC(connect, tcl_checkSocket=0, tcl_checkSocket=1)
+ if test "$tcl_checkSocket" = 1; then
+ AC_CHECK_LIB(socket, main, LIBS="$LIBS -lsocket", tcl_checkBoth=1)
+ fi
+ if test "$tcl_checkBoth" = 1; then
+ tk_oldLibs=$LIBS
+ LIBS="$LIBS -lsocket -lnsl"
+ AC_CHECK_FUNC(accept, tcl_checkNsl=0, [LIBS=$tk_oldLibs])
+ fi
+ AC_CHECK_FUNC(gethostbyname, , AC_CHECK_LIB(nsl, main,
+ [LIBS="$LIBS -lnsl"]))
+
+ # Don't perform the eval of the libraries here because DL_LIBS
+ # won't be set until we call SC_CONFIG_CFLAGS
+
+ TCL_LIBS='${DL_LIBS} ${LIBS} ${MATH_LIBS}'
+ AC_SUBST(TCL_LIBS)
+ AC_SUBST(MATH_LIBS)
+])