merge trunk

7 files changed, 177 insertions, 137 deletions

diff --git a/unix/Makefile.in b/unix/Makefile.in
index 4a3c3aa..7450e6c 100644
--- a/unix/Makefile.in
+++ b/unix/Makefile.in
@@ -1211,7 +1211,7 @@ tclPkg.o: $(GENERIC_DIR)/tclPkg.c
 # prefix/exec_prefix but all the different paths individually.
 
 tclPkgConfig.o: $(GENERIC_DIR)/tclPkgConfig.c
-	$(CC)	-c $(CC_SWITCHES)					\
+	$(CC) -c $(CC_SWITCHES)					\
 		-DCFG_INSTALL_LIBDIR="\"$(LIB_INSTALL_DIR)\"" \
 		-DCFG_INSTALL_BINDIR="\"$(BIN_INSTALL_DIR)\"" \
 		-DCFG_INSTALL_SCRDIR="\"$(SCRIPT_INSTALL_DIR)\"" \
@@ -1269,7 +1269,7 @@ tclVar.o: $(GENERIC_DIR)/tclVar.c
 	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclVar.c
 
 tclZlib.o: $(GENERIC_DIR)/tclZlib.c
-	$(CC) -c $(ZLIB_INCLUDE) $(CC_SWITCHES) $(GENERIC_DIR)/tclZlib.c
+	$(CC) -c $(CC_SWITCHES) $(ZLIB_INCLUDE) $(GENERIC_DIR)/tclZlib.c
 
 tclTest.o: $(GENERIC_DIR)/tclTest.c $(IOHDR) $(TCLREHDRS)
 	$(CC) -c $(APP_CC_SWITCHES) $(GENERIC_DIR)/tclTest.c
diff --git a/unix/configure b/unix/configure
index 5e59570..fbb8af8 100755
--- a/unix/configure
+++ b/unix/configure
@@ -7425,7 +7425,7 @@ fi
 	    CC_SEARCH_FLAGS=""
 	    LD_SEARCH_FLAGS=""
 	    ;;
-	CYGWIN_*)
+	CYGWIN_*|MINGW32*)
 	    SHLIB_CFLAGS=""
 	    SHLIB_LD='${CC} -shared'
 	    SHLIB_SUFFIX=".dll"
@@ -7436,6 +7436,65 @@ fi
 	    TCL_NEEDS_EXP_FILE=1
 	    TCL_EXPORT_FILE_SUFFIX='${VERSION}\$\{DBGX\}.dll.a'
 	    TCL_SHLIB_LD_EXTRAS='-Wl,--out-implib,$@.a'
+	    { echo "$as_me:$LINENO: checking for Cygwin version of gcc" >&5
+echo $ECHO_N "checking for Cygwin version of gcc... $ECHO_C" >&6; }
+if test "${ac_cv_cygwin+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+		#ifdef __CYGWIN__
+		    #error cygwin
+		#endif
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+  ac_cv_cygwin=no
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_cv_cygwin=yes
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+fi
+{ echo "$as_me:$LINENO: result: $ac_cv_cygwin" >&5
+echo "${ECHO_T}$ac_cv_cygwin" >&6; }
+	    if test "$ac_cv_cygwin" = "no"; then
+		{ { echo "$as_me:$LINENO: error: ${CC} is not a cygwin compiler." >&5
+echo "$as_me: error: ${CC} is not a cygwin compiler." >&2;}
+   { (exit 1); exit 1; }; }
+	    fi
 	    ;;
 	dgux*)
 	    SHLIB_CFLAGS="-K PIC"
@@ -9354,7 +9413,7 @@ fi
 	case $system in
 	    AIX-*) ;;
 	    BSD/OS*) ;;
-	    CYGWIN_*) ;;
+	    CYGWIN_*|MINGW32_*) ;;
 	    IRIX*) ;;
 	    NetBSD-*|FreeBSD-*|OpenBSD-*) ;;
 	    Darwin-*) ;;
@@ -9452,6 +9511,71 @@ fi
 
 
 
+	# See if the compiler supports casting to a union type.
+	# This is used to stop gcc from printing a compiler
+	# warning when initializing a union member.
+
+	{ echo "$as_me:$LINENO: checking for cast to union support" >&5
+echo $ECHO_N "checking for cast to union support... $ECHO_C" >&6; }
+if test "${tcl_cv_cast_to_union+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+		  union foo { int i; double d; };
+		  union foo f = (union foo) (int) 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+  tcl_cv_cast_to_union=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	tcl_cv_cast_to_union=no
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+fi
+{ echo "$as_me:$LINENO: result: $tcl_cv_cast_to_union" >&5
+echo "${ECHO_T}$tcl_cv_cast_to_union" >&6; }
+	if test "$tcl_cv_cast_to_union" = "yes"; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_CAST_TO_UNION 1
+_ACEOF
+
+	fi
+
     # FIXME: This subst was left in only because the TCL_DL_LIBS
     # entry in tclConfig.sh uses it. It is not clear why someone
     # would use TCL_DL_LIBS instead of TCL_LIBS.
@@ -9508,6 +9632,11 @@ fi
     if test "$tcl_ok" = "no"; then
 	CFLAGS_DEFAULT='$(CFLAGS_OPTIMIZE)'
 	LDFLAGS_DEFAULT='$(LDFLAGS_OPTIMIZE)'
+
+cat >>confdefs.h <<\_ACEOF
+#define NDEBUG 1
+_ACEOF
+
 	{ echo "$as_me:$LINENO: result: no" >&5
 echo "${ECHO_T}no" >&6; }
 
@@ -9525,12 +9654,6 @@ echo "${ECHO_T}yes (standard debugging)" >&6; }
     fi
 
 
-    ### FIXME: Surely TCL_CFG_DEBUG should be set to whether we're debugging?
-
-cat >>confdefs.h <<\_ACEOF
-#define TCL_CFG_DEBUG 1
-_ACEOF
-
 
     if test "$tcl_ok" = "mem" -o "$tcl_ok" = "all"; then
 
@@ -14353,6 +14476,7 @@ _ACEOF
 #	lack blkcnt_t.
 #--------------------------------------------------------------------
 
+if test "$ac_cv_cygwin" != "yes"; then
 { echo "$as_me:$LINENO: checking for struct stat.st_blocks" >&5
 echo $ECHO_N "checking for struct stat.st_blocks... $ECHO_C" >&6; }
 if test "${ac_cv_member_struct_stat_st_blocks+set}" = set; then
@@ -14556,6 +14680,7 @@ _ACEOF
 
 fi
 
+fi
 { echo "$as_me:$LINENO: checking for blkcnt_t" >&5
 echo $ECHO_N "checking for blkcnt_t... $ECHO_C" >&6; }
 if test "${ac_cv_type_blkcnt_t+set}" = set; then
diff --git a/unix/configure.in b/unix/configure.in
index 71ec736..0759463 100644
--- a/unix/configure.in
+++ b/unix/configure.in
@@ -303,7 +303,9 @@ SC_TIME_HANDLER
 #	lack blkcnt_t.
 #--------------------------------------------------------------------
 
+if test "$ac_cv_cygwin" != "yes"; then
 AC_CHECK_MEMBERS([struct stat.st_blocks, struct stat.st_blksize])
+fi
 AC_CHECK_TYPES([blkcnt_t])
 AC_CHECK_FUNC(fstatfs, , [AC_DEFINE(NO_FSTATFS, 1, [Do we have fstatfs()?])])
 
@@ -437,7 +439,7 @@ AC_CHECK_FUNC(opendir, , [AC_DEFINE(USE_DIRENT2_H, 1, [May we include <dirent2.h
 #--------------------------------------------------------------------
 
 AC_CACHE_CHECK([union wait], tcl_cv_union_wait, [
-    AC_TRY_LINK([#include <sys/types.h> 
+    AC_TRY_LINK([#include <sys/types.h>
 #include <sys/wait.h>], [
 union wait x;
 WIFEXITED(x);		/* Generates compiler error if WIFEXITED
@@ -820,12 +822,12 @@ if test "$FRAMEWORK_BUILD" = "1" ; then
     PRIVATE_INCLUDE_DIR="${libdir}/PrivateHeaders"
     HTML_DIR="${libdir}/Resources/Documentation/Reference/Tcl"
     EXTRA_INSTALL="install-private-headers html-tcl"
-    EXTRA_BUILD_HTML='@ln -fs contents.htm "$(HTML_INSTALL_DIR)"/TclTOC.html' 
+    EXTRA_BUILD_HTML='@ln -fs contents.htm "$(HTML_INSTALL_DIR)"/TclTOC.html'
     EXTRA_INSTALL_BINARIES='@echo "Installing Info.plist to $(LIB_INSTALL_DIR)/Resources" && mkdir -p "$(LIB_INSTALL_DIR)/Resources" && $(INSTALL_DATA) Tcl-Info.plist "$(LIB_INSTALL_DIR)/Resources/Info.plist"'
     EXTRA_INSTALL_BINARIES="$EXTRA_INSTALL_BINARIES"' && echo "Installing license.terms to $(LIB_INSTALL_DIR)/Resources" && $(INSTALL_DATA) "$(TOP_DIR)/license.terms" "$(LIB_INSTALL_DIR)/Resources"'
     EXTRA_INSTALL_BINARIES="$EXTRA_INSTALL_BINARIES"' && echo "Finalizing Tcl.framework" && rm -f "$(LIB_INSTALL_DIR)/../Current" && ln -s "$(VERSION)" "$(LIB_INSTALL_DIR)/../Current" && for f in "$(LIB_FILE)" tclConfig.sh Resources Headers PrivateHeaders; do rm -f "$(LIB_INSTALL_DIR)/../../$$f" && ln -s "Versions/Current/$$f" "$(LIB_INSTALL_DIR)/../.."; done && f="$(STUB_LIB_FILE)" && rm -f "$(LIB_INSTALL_DIR)/../../$$f" && ln -s "Versions/$(VERSION)/$$f" "$(LIB_INSTALL_DIR)/../.."'
-    # Don't use AC_DEFINE for the following as the framework version define 
-    # needs to go into the Makefile even when using autoheader, so that we  
+    # Don't use AC_DEFINE for the following as the framework version define
+    # needs to go into the Makefile even when using autoheader, so that we
     # can pick up a potential make override of VERSION. Also, don't put this
     # into CFLAGS as it should not go into tclConfig.sh
     EXTRA_CC_SWITCHES='-DTCL_FRAMEWORK_VERSION=\"$(VERSION)\"'
diff --git a/unix/tcl.m4 b/unix/tcl.m4
index f6e002e..222c375 100644
--- a/unix/tcl.m4
+++ b/unix/tcl.m4
@@ -738,6 +738,7 @@ AC_DEFUN([SC_ENABLE_SYMBOLS], [
     if test "$tcl_ok" = "no"; then
 	CFLAGS_DEFAULT='$(CFLAGS_OPTIMIZE)'
 	LDFLAGS_DEFAULT='$(LDFLAGS_OPTIMIZE)'
+	AC_DEFINE(NDEBUG, 1, [Is no debugging enabled?])
 	AC_MSG_RESULT([no])
 	AC_DEFINE(TCL_CFG_OPTIMIZED, 1, [Is this an optimized build?])
     else
@@ -749,8 +750,6 @@ AC_DEFUN([SC_ENABLE_SYMBOLS], [
     fi
     AC_SUBST(CFLAGS_DEFAULT)
     AC_SUBST(LDFLAGS_DEFAULT)
-    ### FIXME: Surely TCL_CFG_DEBUG should be set to whether we're debugging?
-    AC_DEFINE(TCL_CFG_DEBUG, 1, [Is debugging enabled?])
 
     if test "$tcl_ok" = "mem" -o "$tcl_ok" = "all"; then
 	AC_DEFINE(TCL_MEM_DEBUG, 1, [Is memory debugging enabled?])
@@ -1220,7 +1219,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 	    CC_SEARCH_FLAGS=""
 	    LD_SEARCH_FLAGS=""
 	    ;;
-	CYGWIN_*)
+	CYGWIN_*|MINGW32*)
 	    SHLIB_CFLAGS=""
 	    SHLIB_LD='${CC} -shared'
 	    SHLIB_SUFFIX=".dll"
@@ -1231,6 +1230,19 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 	    TCL_NEEDS_EXP_FILE=1
 	    TCL_EXPORT_FILE_SUFFIX='${VERSION}\$\{DBGX\}.dll.a'
 	    TCL_SHLIB_LD_EXTRAS='-Wl,--out-implib,$[@].a'
+	    AC_CACHE_CHECK(for Cygwin version of gcc,
+		ac_cv_cygwin,
+		AC_TRY_COMPILE([
+		#ifdef __CYGWIN__
+		    #error cygwin
+		#endif
+		], [],
+		ac_cv_cygwin=no,
+		ac_cv_cygwin=yes)
+	    )
+	    if test "$ac_cv_cygwin" = "no"; then
+		AC_MSG_ERROR([${CC} is not a cygwin compiler.])
+	    fi
 	    ;;
 	dgux*)
 	    SHLIB_CFLAGS="-K PIC"
@@ -2058,7 +2070,7 @@ dnl # preprocessing tests use only CPPFLAGS.
 	case $system in
 	    AIX-*) ;;
 	    BSD/OS*) ;;
-	    CYGWIN_*) ;;
+	    CYGWIN_*|MINGW32_*) ;;
 	    IRIX*) ;;
 	    NetBSD-*|FreeBSD-*|OpenBSD-*) ;;
 	    Darwin-*) ;;
@@ -2115,6 +2127,25 @@ dnl # preprocessing tests use only CPPFLAGS.
         TCL_LIBS="${DL_LIBS} ${LIBS} ${MATH_LIBS}"])
     AC_SUBST(TCL_LIBS)
 
+	# See if the compiler supports casting to a union type.
+	# This is used to stop gcc from printing a compiler
+	# warning when initializing a union member.
+
+	AC_CACHE_CHECK(for cast to union support,
+	    tcl_cv_cast_to_union,
+	    AC_TRY_COMPILE([],
+	    [
+		  union foo { int i; double d; };
+		  union foo f = (union foo) (int) 0;
+	    ],
+	    tcl_cv_cast_to_union=yes,
+	    tcl_cv_cast_to_union=no)
+	)
+	if test "$tcl_cv_cast_to_union" = "yes"; then
+	    AC_DEFINE(HAVE_CAST_TO_UNION, 1,
+		    [Defined when compiler supports casting to union type.])
+	fi
+
     # FIXME: This subst was left in only because the TCL_DL_LIBS
     # entry in tclConfig.sh uses it. It is not clear why someone
     # would use TCL_DL_LIBS instead of TCL_LIBS.
diff --git a/unix/tclConfig.h.in b/unix/tclConfig.h.in
index 42abf34..31466bc 100644
--- a/unix/tclConfig.h.in
+++ b/unix/tclConfig.h.in
@@ -362,7 +362,7 @@
 #undef TCL_CFGVAL_ENCODING
 
 /* Is debugging enabled? */
-#undef TCL_CFG_DEBUG
+#undef NDEBUG
 
 /* Is this a 64-bit build? */
 #undef TCL_CFG_DO64BIT
diff --git a/unix/tclUnixPort.h b/unix/tclUnixPort.h
index 48aef9c..4adb36c 100644
--- a/unix/tclUnixPort.h
+++ b/unix/tclUnixPort.h
@@ -81,8 +81,6 @@ typedef off_t		Tcl_SeekOffset;
 #ifdef __CYGWIN__
 MODULE_SCOPE int TclOSstat(const char *name, Tcl_StatBuf *statBuf);
 MODULE_SCOPE int TclOSlstat(const char *name, Tcl_StatBuf *statBuf);
-#undef HAVE_STRUCT_STAT_ST_BLOCKS
-#undef HAVE_STRUCT_STAT_ST_BLKSIZE
 #elif defined(HAVE_STRUCT_STAT64)
 #   define TclOSstat		stat64
 #   define TclOSlstat		lstat64
diff --git a/unix/tclUnixTime.c b/unix/tclUnixTime.c
index 02a90a5..c7921fe 100644
--- a/unix/tclUnixTime.c
+++ b/unix/tclUnixTime.c
@@ -224,122 +224,6 @@ TclpWideClicksToNanoseconds(
 /*
  *----------------------------------------------------------------------
  *
- * TclpGetTimeZone --
- *
- *	Determines the current timezone. The method varies wildly between
- *	different platform implementations, so its hidden in this function.
- *
- * Results:
- *	The return value is the local time zone, measured in minutes away from
- *	GMT (-ve for east, +ve for west).
- *
- * Side effects:
- *	None.
- *
- *----------------------------------------------------------------------
- */
-
-int
-TclpGetTimeZone(
-    unsigned long currentTime)
-{
-    int timeZone;
-
-    /*
-     * We prefer first to use the time zone in "struct tm" if the structure
-     * contains such a member. Following that, we try to locate the external
-     * 'timezone' variable and use its value. If both of those methods fail,
-     * we attempt to convert a known time to local time and use the difference
-     * from UTC as the local time zone. In all cases, we need to undo any
-     * Daylight Saving Time adjustment.
-     */
-
-#if defined(HAVE_TM_TZADJ)
-#define TCL_GOT_TIMEZONE
-    /*
-     * Struct tm contains tm_tzadj - that value may be used.
-     */
-
-    time_t curTime = (time_t) currentTime;
-    struct tm *timeDataPtr = TclpLocaltime(&curTime);
-
-    timeZone = timeDataPtr->tm_tzadj / 60;
-    if (timeDataPtr->tm_isdst) {
-	timeZone += 60;
-    }
-#endif
-
-#if defined(HAVE_TM_GMTOFF) && !defined (TCL_GOT_TIMEZONE)
-#define TCL_GOT_TIMEZONE
-    /*
-     * Struct tm contains tm_gmtoff - that value may be used.
-     */
-
-    time_t curTime = (time_t) currentTime;
-    struct tm *timeDataPtr = TclpLocaltime(&curTime);
-
-    timeZone = -(timeDataPtr->tm_gmtoff / 60);
-    if (timeDataPtr->tm_isdst) {
-	timeZone += 60;
-    }
-#endif
-
-#if defined(HAVE_TIMEZONE_VAR) && !defined(TCL_GOT_TIMEZONE) && !defined(USE_DELTA_FOR_TZ)
-#define TCL_GOT_TIMEZONE
-    /*
-     * The 'timezone' external var is present and may be used.
-     */
-
-    SetTZIfNecessary();
-
-    /*
-     * Note: this is not a typo in "timezone" below! See tzset documentation
-     * for details.
-     */
-
-    timeZone = timezone / 60;
-#endif
-
-#if !defined(TCL_GOT_TIMEZONE)
-#define TCL_GOT_TIMEZONE
-    /*
-     * Fallback - determine time zone with a known reference time.
-     */
-
-    time_t tt;
-    struct tm *stm;
-
-    tt = 849268800L;		/* 1996-11-29 12:00:00  GMT */
-    stm = TclpLocaltime(&tt);	/* eg 1996-11-29  6:00:00  CST6CDT */
-
-    /*
-     * The calculation below assumes a max of +12 or -12 hours from GMT.
-     */
-
-    timeZone = (12 - stm->tm_hour)*60 + (0 - stm->tm_min);
-    if (stm->tm_isdst) {
-	timeZone += 60;
-    }
-
-    /*
-     * Now have offset for our known reference time, eg +360 for CST6CDT.
-     */
-#endif
-
-#ifndef TCL_GOT_TIMEZONE
-    /*
-     * Cause fatal compile error, we don't know how to get timezone.
-     */
-
-#error autoconf did not figure out how to determine the timezone.
-#endif
-
-    return timeZone;
-}
-
-/*
- *----------------------------------------------------------------------
- *
  * Tcl_GetTime --
  *
  *	Gets the current system time in seconds and microseconds since the