6 files changed, 57 insertions, 10 deletions
diff --git a/unix/Makefile.in b/unix/Makefile.in
index 51c06e5..f044e41 100644
--- a/unix/Makefile.in
+++ b/unix/Makefile.in
@@ -830,7 +830,7 @@ install-libraries: libraries
 		else true; \
 		fi; \
 	    done;
-	@for i in opt0.4 encoding ../tcl8 ../tcl8/8.4  ../tcl8/8.4/platform ../tcl8/8.5 ../tcl8/8.6; \
+	@for i in opt0.4 encoding ../tcl8 ../tcl8/8.4  ../tcl8/8.4/platform ../tcl8/8.5 ../tcl8/8.6 ../tcl8/8.7; \
 	    do \
 	    if [ ! -d "$(SCRIPT_INSTALL_DIR)"/$$i ] ; then \
 		echo "Making directory $(SCRIPT_INSTALL_DIR)/$$i"; \
@@ -1759,7 +1759,7 @@ configure-packages:
 		  $$i/configure --with-tcl=../.. \
 		      --with-tclinclude=$(GENERIC_DIR) \
 		      $(PKG_CFG_ARGS) --libdir=$(PACKAGE_DIR) \
-		      --enable-shared --enable-threads; ) || exit $$?; \
+		      --enable-shared; ) || exit $$?; \
 	      fi; \
 	    fi; \
 	  fi; \
diff --git a/unix/README b/unix/README
index d8f1090..381cbdd 100644
--- a/unix/README
+++ b/unix/README
@@ -45,8 +45,6 @@ How To Compile And Install Tcl:
     refer to the autoconf documentation (not included here). Tcl's "configure"
     supports the following special switches in addition to the standard ones:
 
-	--enable-threads	If this switch is set, Tcl will compile itself
-				with multithreading support.
 	--disable-load		If this switch is specified then Tcl will
 				configure itself not to allow dynamic loading,
 				even if your system appears to support it.
diff --git a/unix/configure b/unix/configure
index 407bea9..b6ead40 100755
--- a/unix/configure
+++ b/unix/configure
@@ -6933,6 +6933,40 @@ $as_echo "#define HAVE_STRUCT_DIRENT64 1" >>confdefs.h
 
 	fi
 
+	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for DIR64" >&5
+$as_echo_n "checking for DIR64... " >&6; }
+if ${tcl_cv_DIR64+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+	    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+#include <dirent.h>
+int
+main ()
+{
+struct dirent64 *p; DIR64 d = opendir64(".");
+            p = readdir64(d); rewinddir64(d); closedir64(d);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  tcl_cv_DIR64=yes
+else
+  tcl_cv_DIR64=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $tcl_cv_DIR64" >&5
+$as_echo "$tcl_cv_DIR64" >&6; }
+	if test "x${tcl_cv_DIR64}" = "xyes" ; then
+
+$as_echo "#define HAVE_DIR64 1" >>confdefs.h
+
+	fi
+
 	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for struct stat64" >&5
 $as_echo_n "checking for struct stat64... " >&6; }
 if ${tcl_cv_struct_stat64+:} false; then :
diff --git a/unix/tcl.m4 b/unix/tcl.m4
index 35d6580..3df859a 100644
--- a/unix/tcl.m4
+++ b/unix/tcl.m4
@@ -2415,7 +2415,7 @@ AC_DEFUN([SC_TCL_EARLY_FLAGS],[
 #	Might define the following vars:
 #		TCL_WIDE_INT_IS_LONG
 #		TCL_WIDE_INT_TYPE
-#		HAVE_STRUCT_DIRENT64
+#		HAVE_STRUCT_DIRENT64, HAVE_DIR64
 #		HAVE_STRUCT_STAT64
 #		HAVE_TYPE_OFF64_T
 #
@@ -2451,6 +2451,15 @@ AC_DEFUN([SC_TCL_64BIT_FLAGS], [
 	    AC_DEFINE(HAVE_STRUCT_DIRENT64, 1, [Is 'struct dirent64' in <sys/types.h>?])
 	fi
 
+	AC_CACHE_CHECK([for DIR64], tcl_cv_DIR64,[
+	    AC_TRY_COMPILE([#include <sys/types.h>
+#include <dirent.h>],[struct dirent64 *p; DIR64 d = opendir64(".");
+            p = readdir64(d); rewinddir64(d); closedir64(d);],
+		tcl_cv_DIR64=yes,tcl_cv_DIR64=no)])
+	if test "x${tcl_cv_DIR64}" = "xyes" ; then
+	    AC_DEFINE(HAVE_DIR64, 1, [Is 'DIR64' in <sys/types.h>?])
+	fi
+
 	AC_CACHE_CHECK([for struct stat64], tcl_cv_struct_stat64,[
 	    AC_TRY_COMPILE([#include <sys/stat.h>],[struct stat64 p;
 ],
diff --git a/unix/tclConfig.h.in b/unix/tclConfig.h.in
index b9d0059..21c3bef 100644
--- a/unix/tclConfig.h.in
+++ b/unix/tclConfig.h.in
@@ -196,6 +196,9 @@
 /* Is 'struct dirent64' in <sys/types.h>? */
 #undef HAVE_STRUCT_DIRENT64
 
+/* Is 'DIR64' in <sys/types.h>? */
+#undef HAVE_DIR64
+
 /* Define to 1 if the system has the type `struct in6_addr'. */
 #undef HAVE_STRUCT_IN6_ADDR
 
diff --git a/unix/tclUnixPort.h b/unix/tclUnixPort.h
index e4277a3..a90b471 100644
--- a/unix/tclUnixPort.h
+++ b/unix/tclUnixPort.h
@@ -57,16 +57,19 @@
  */
 
 #ifdef HAVE_STRUCT_DIRENT64
-typedef DIR64		TclDIR;
-typedef struct dirent64	Tcl_DirEntry;
+typedef struct dirent64		Tcl_DirEntry;
 #   define TclOSreaddir		readdir64
+#else
+typedef struct dirent		Tcl_DirEntry;
+#   define TclOSreaddir		readdir
+#endif
+#ifdef HAVE_DIR64
+typedef DIR64			TclDIR;
 #   define TclOSopendir		opendir64
 #   define TclOSrewinddir	rewinddir64
 #   define TclOSclosedir	closedir64
 #else
-typedef DIR		TclDIR;
-typedef struct dirent	Tcl_DirEntry;
-#   define TclOSreaddir		readdir
+typedef DIR			TclDIR;
 #   define TclOSopendir		opendir
 #   define TclOSrewinddir	rewinddir
 #   define TclOSclosedir	closedir