# symbols when dynamically loaded into tclsh.

	    SHLIB_LD_LIBS='${LIBS}'
	    SHLIB_SUFFIX=".so"
	    DL_OBJS="tclLoadDl.o"
	    DL_LIBS="-ldl"
	    LDFLAGS=""
	    if test "$GCC" = "yes" ; then
		LD_SEARCH_FLAGS='-Wl,-R,${LIB_RUNTIME_DIR}'
	    else
		LD_SEARCH_FLAGS='-R ${LIB_RUNTIME_DIR}'
	    fi
	    ;;
	SunOS-5*)

	    # Note: If _REENTRANT isn't defined, then Solaris
	    # won't define thread-safe library routines.

	    cat >> confdefs.h <<\EOF

	    SHLIB_SUFFIX=".so"
	    DL_OBJS="tclLoadDl.o"
	    DL_LIBS="-ldl"
	    # Some UNIX_SV* systems (unixware 1.1.2 for example) have linkers
	    # that don't grok the -Bexport option.  Test that it does.
	    hold_ldflags=$LDFLAGS
	    echo $ac_n "checking for ld accepts -Bexport flag""... $ac_c" 1>&6
echo "configure:5766: checking for ld accepts -Bexport flag" >&5
	    LDFLAGS="${LDFLAGS} -Wl,-Bexport"
	    cat > conftest.$ac_ext <<EOF
#line 5769 "configure"
#include "confdefs.h"

int main() {
int i;
; return 0; }
EOF
if { (eval echo configure:5776: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
  rm -rf conftest*
  found=yes
else
  echo "configure: failed program was:" >&5
  cat conftest.$ac_ext >&5
  rm -rf conftest*
  found=no

    #
    # Note that the modified COFF format used on MIPS Ultrix 4.x is usable; the
    # `struct exec' includes a second header that contains information that
    # duplicates the v7 fields that are needed.

    if test "x$DL_OBJS" = "xtclLoadAout.o" ; then
	echo $ac_n "checking sys/exec.h""... $ac_c" 1>&6
echo "configure:5822: checking sys/exec.h" >&5
	cat > conftest.$ac_ext <<EOF
#line 5824 "configure"
#include "confdefs.h"
#include <sys/exec.h>
int main() {

	    struct exec foo;
	    unsigned long seek;
	    int flag;
#if defined(__mips) || defined(mips)
	    seek = N_TXTOFF (foo.ex_f, foo.ex_o);
#else
	    seek = N_TXTOFF (foo);
#endif
	    flag = (foo.a_magic == OMAGIC);
	    return foo.a_text + foo.a_data + foo.a_bss + foo.a_entry;
    
; return 0; }
EOF
if { (eval echo configure:5842: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
  rm -rf conftest*
  tcl_ok=usable
else
  echo "configure: failed program was:" >&5
  cat conftest.$ac_ext >&5
  rm -rf conftest*
  tcl_ok=unusable
fi
rm -f conftest*
	echo "$ac_t""$tcl_ok" 1>&6
	if test $tcl_ok = usable; then
	    cat >> confdefs.h <<\EOF
#define USE_SYS_EXEC_H 1
EOF

	else
	    echo $ac_n "checking a.out.h""... $ac_c" 1>&6
echo "configure:5860: checking a.out.h" >&5
	    cat > conftest.$ac_ext <<EOF
#line 5862 "configure"
#include "confdefs.h"
#include <a.out.h>
int main() {

		struct exec foo;
		unsigned long seek;
		int flag;
#if defined(__mips) || defined(mips)
		seek = N_TXTOFF (foo.ex_f, foo.ex_o);
#else
		seek = N_TXTOFF (foo);
#endif
		flag = (foo.a_magic == OMAGIC);
		return foo.a_text + foo.a_data + foo.a_bss + foo.a_entry;
	    
; return 0; }
EOF
if { (eval echo configure:5880: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
  rm -rf conftest*
  tcl_ok=usable
else
  echo "configure: failed program was:" >&5
  cat conftest.$ac_ext >&5
  rm -rf conftest*
  tcl_ok=unusable
fi
rm -f conftest*
	    echo "$ac_t""$tcl_ok" 1>&6
	    if test $tcl_ok = usable; then
		cat >> confdefs.h <<\EOF
#define USE_A_OUT_H 1
EOF

	    else
		echo $ac_n "checking sys/exec_aout.h""... $ac_c" 1>&6
echo "configure:5898: checking sys/exec_aout.h" >&5
		cat > conftest.$ac_ext <<EOF
#line 5900 "configure"
#include "confdefs.h"
#include <sys/exec_aout.h>
int main() {

		    struct exec foo;
		    unsigned long seek;
		    int flag;
#if defined(__mips) || defined(mips)
		    seek = N_TXTOFF (foo.ex_f, foo.ex_o);
#else
		    seek = N_TXTOFF (foo);
#endif
		    flag = (foo.a_midmag == OMAGIC);
		    return foo.a_text + foo.a_data + foo.a_bss + foo.a_entry;
		
; return 0; }
EOF
if { (eval echo configure:5918: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
  rm -rf conftest*
  tcl_ok=usable
else
  echo "configure: failed program was:" >&5
  cat conftest.$ac_ext >&5
  rm -rf conftest*
  tcl_ok=unusable

    
    
    



    echo $ac_n "checking for build with symbols""... $ac_c" 1>&6
echo "configure:6015: checking for build with symbols" >&5
    # Check whether --enable-symbols or --disable-symbols was given.
if test "${enable_symbols+set}" = set; then
  enableval="$enable_symbols"
  tcl_ok=$enableval
else
  tcl_ok=no
fi

#--------------------------------------------------------------------


    for ac_hdr in sys/ioctl.h
do
ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
echo "configure:6052: checking for $ac_hdr" >&5
if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  cat > conftest.$ac_ext <<EOF
#line 6057 "configure"
#include "confdefs.h"
#include <$ac_hdr>
EOF
ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
{ (eval echo configure:6062: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
if test -z "$ac_err"; then
  rm -rf conftest*
  eval "ac_cv_header_$ac_safe=yes"
else
  echo "$ac_err" >&5
  echo "configure: failed program was:" >&5

fi
done

    for ac_hdr in sys/filio.h
do
ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
echo "configure:6092: checking for $ac_hdr" >&5
if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  cat > conftest.$ac_ext <<EOF
#line 6097 "configure"
#include "confdefs.h"
#include <$ac_hdr>
EOF
ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
{ (eval echo configure:6102: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
if test -z "$ac_err"; then
  rm -rf conftest*
  eval "ac_cv_header_$ac_safe=yes"
else
  echo "$ac_err" >&5
  echo "configure: failed program was:" >&5

 
else
  echo "$ac_t""no" 1>&6
fi
done

    echo $ac_n "checking FIONBIO vs. O_NONBLOCK for nonblocking I/O""... $ac_c" 1>&6
echo "configure:6129: checking FIONBIO vs. O_NONBLOCK for nonblocking I/O" >&5
    if test -f /usr/lib/NextStep/software_version; then
	system=NEXTSTEP-`awk '/3/,/3/' /usr/lib/NextStep/software_version`
    else
	system=`uname -s`-`uname -r`
	if test "$?" -ne 0 ; then
	    system=unknown
	else

#--------------------------------------------------------------------

TCL_UNSHARED_LIB_SUFFIX=${UNSHARED_LIB_SUFFIX}
TCL_SHARED_LIB_SUFFIX=${SHARED_LIB_SUFFIX}


    echo $ac_n "checking how to build libraries""... $ac_c" 1>&6
echo "configure:6191: checking how to build libraries" >&5
    # Check whether --enable-shared or --disable-shared was given.
if test "${enable_shared+set}" = set; then
  enableval="$enable_shared"
  tcl_ok=$enableval
else
  tcl_ok=yes
fi