* tcl.m4 (Linux): --enable-64bit support. [Patch 1597389], [Bug 1230558]

	* configure: autoconf-2.59

2 files changed, 104 insertions, 29 deletions

diff --git a/unix/configure b/unix/configure
index 911751a..d7d57c5 100755
--- a/unix/configure
+++ b/unix/configure
@@ -5367,7 +5367,7 @@ echo "$as_me: WARNING: 64bit mode not supported by gcc" >&2;}
 	    # get rid of the warnings.
 	    #CFLAGS_OPTIMIZE="${CFLAGS_OPTIMIZE} -D__NO_STRING_INLINES -D__NO_MATH_INLINES"
 
-	    SHLIB_LD="${CC} -shared"
+	    SHLIB_LD='${CC} -shared ${CFLAGS} ${LDFLAGS}'
 	    DL_OBJS="tclLoadDl.o"
 	    DL_LIBS="-ldl"
 	    LDFLAGS="$LDFLAGS -Wl,--export-dynamic"
@@ -5376,6 +5376,70 @@ echo "$as_me: WARNING: 64bit mode not supported by gcc" >&2;}
 	    if test "`uname -m`" = "alpha" ; then
 		CFLAGS="$CFLAGS -mieee"
 	    fi
+	    if test $do64bit = yes; then
+		echo "$as_me:$LINENO: checking if compiler accepts -m64 flag" >&5
+echo $ECHO_N "checking if compiler accepts -m64 flag... $ECHO_C" >&6
+if test "${tcl_cv_cc_m64+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+		    hold_cflags=$CFLAGS
+		    CFLAGS="$CFLAGS -m64"
+		    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_cc_m64=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_cc_m64=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+		    CFLAGS=$hold_cflags
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_cc_m64" >&5
+echo "${ECHO_T}$tcl_cv_cc_m64" >&6
+		if test $tcl_cv_cc_m64 = yes; then
+		    CFLAGS="$CFLAGS -m64"
+		    do64bit_ok=yes
+		fi
+	    fi
 
 	    # The combo of gcc + glibc has a bug related
 	    # to inlining of functions like strtod(). The
@@ -9376,20 +9440,20 @@ fi;
     XFT_CFLAGS=""
     XFT_LIBS=""
     if test "$enable_xft" = "no" ; then
-        echo "$as_me:$LINENO: result: $enable_xft" >&5
+	echo "$as_me:$LINENO: result: $enable_xft" >&5
 echo "${ECHO_T}$enable_xft" >&6
     else
-        found_xft="yes"
-        XFT_CFLAGS=`xft-config --cflags 2>/dev/null` || found_xft="no"
-        XFT_LIBS=`xft-config --libs 2>/dev/null` || found_xft="no"
-        if test "$found_xft" = "no" ; then
-            found_xft=yes
-            XFT_CFLAGS=`pkg-config --cflags xft 2>/dev/null` || found_xft="no"
-            XFT_LIBS=`pkg-config --libs xft 2>/dev/null` || found_xft="no"
-        fi
+	found_xft="yes"
+			XFT_CFLAGS=`xft-config --cflags 2>/dev/null` || found_xft="no"
+	XFT_LIBS=`xft-config --libs 2>/dev/null` || found_xft="no"
+	if test "$found_xft" = "no" ; then
+	    found_xft=yes
+	    XFT_CFLAGS=`pkg-config --cflags xft 2>/dev/null` || found_xft="no"
+	    XFT_LIBS=`pkg-config --libs xft 2>/dev/null` || found_xft="no"
+	fi
 	echo "$as_me:$LINENO: result: $found_xft" >&5
 echo "${ECHO_T}$found_xft" >&6
-        if test "$found_xft" = "yes" ; then
+		if test "$found_xft" = "yes" ; then
 	    tk_oldCFlags=$CFLAGS
 	    CFLAGS="$CFLAGS $XINCLUDES $XFT_CFLAGS"
 	    tk_oldLibs=$LIBS
@@ -9446,15 +9510,15 @@ if test $ac_cv_header_X11_Xft_Xft_h = yes; then
   :
 else
 
-                found_xft=no
+		found_xft=no
 
 fi
 
 
-            CFLAGS=$tk_oldCFlags
-            LIBS=$tk_oldLibs
-        fi
-        if test "$found_xft" = "yes" ; then
+	    CFLAGS=$tk_oldCFlags
+	    LIBS=$tk_oldLibs
+	fi
+		if test "$found_xft" = "yes" ; then
 	    tk_oldCFlags=$CFLAGS
 	    CFLAGS="$CFLAGS $XINCLUDES $XFT_CFLAGS"
 	    tk_oldLibs=$LIBS
@@ -9533,30 +9597,30 @@ _ACEOF
 
 else
 
-                found_xft=no
+		found_xft=no
 
 fi
 
-            CFLAGS=$tk_oldCFlags
-            LIBS=$tk_oldLibs
-        fi
-        if test "$found_xft" = "no" ; then
-            if test "$enable_xft" = "yes" ; then
-                { echo "$as_me:$LINENO: WARNING: Can't find xft configuration, or xft is unusable" >&5
+	    CFLAGS=$tk_oldCFlags
+	    LIBS=$tk_oldLibs
+	fi
+		if test "$found_xft" = "no" ; then
+	    if test "$enable_xft" = "yes" ; then
+		{ echo "$as_me:$LINENO: WARNING: Can't find xft configuration, or xft is unusable" >&5
 echo "$as_me: WARNING: Can't find xft configuration, or xft is unusable" >&2;}
-            fi
-            enable_xft=no
-        fi
+	    fi
+	    enable_xft=no
+	fi
     fi
     if test $enable_xft = "yes" ; then
-        UNIX_FONT_OBJS=tkUnixRFont.o
+	UNIX_FONT_OBJS=tkUnixRFont.o
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_XFT 1
 _ACEOF
 
     else
-        UNIX_FONT_OBJS=tkUnixFont.o
+	UNIX_FONT_OBJS=tkUnixFont.o
     fi
 
 
diff --git a/unix/tcl.m4 b/unix/tcl.m4
index 8c900dd..ff09cd0 100644
--- a/unix/tcl.m4
+++ b/unix/tcl.m4
@@ -1402,7 +1402,7 @@ dnl AC_CHECK_TOOL(AR, ar)
 	    # get rid of the warnings.
 	    #CFLAGS_OPTIMIZE="${CFLAGS_OPTIMIZE} -D__NO_STRING_INLINES -D__NO_MATH_INLINES"
 
-	    SHLIB_LD="${CC} -shared"
+	    SHLIB_LD='${CC} -shared ${CFLAGS} ${LDFLAGS}'
 	    DL_OBJS="tclLoadDl.o"
 	    DL_LIBS="-ldl"
 	    LDFLAGS="$LDFLAGS -Wl,--export-dynamic"
@@ -1411,6 +1411,17 @@ dnl AC_CHECK_TOOL(AR, ar)
 	    if test "`uname -m`" = "alpha" ; then
 		CFLAGS="$CFLAGS -mieee"
 	    fi
+	    if test $do64bit = yes; then
+		AC_CACHE_CHECK([if compiler accepts -m64 flag], tcl_cv_cc_m64, [
+		    hold_cflags=$CFLAGS
+		    CFLAGS="$CFLAGS -m64"
+		    AC_TRY_LINK(,, tcl_cv_cc_m64=yes, tcl_cv_cc_m64=no)
+		    CFLAGS=$hold_cflags])
+		if test $tcl_cv_cc_m64 = yes; then
+		    CFLAGS="$CFLAGS -m64"
+		    do64bit_ok=yes
+		fi
+	    fi
 
 	    # The combo of gcc + glibc has a bug related
 	    # to inlining of functions like strtod(). The