Remove a lot of stuff meant for macOS < 10.9

changes.md

@@ -13,7 +13,7 @@ writing Tcl scripts containing Tk commands.
 ## Many improvements to use of platform features and conventions.
  - Built-in widgets and themes are scaling-aware.
  - Improved support of two-finger gestures, where available
- - The `tk windowingsystem` "aqua" needs macOS 10.10 or later
+ - The `tk windowingsystem` "aqua" needs macOS 10.9 or later
 
 ## New commands and options
  - `tk sysnotify`: access to the OS notifications system

generic/tk.h

@@ -55,7 +55,6 @@ extern "C" {
  * unix/configure.ac	(2 LOC Major, 2 LOC minor, 1 LOC patch)
  * win/configure.ac	(as above)
  * README.md		(sections 0 and 1)
- * macosx/Tk-Common.xcconfig (not patchlevel) 1 LOC
  * win/README		(not patchlevel)
  * unix/README		(not patchlevel)
  * unix/tk.spec		(1 LOC patch)

generic/tkColor.c

@@ -117,7 +117,6 @@ Tk_AllocColorFromObj(
 	     * This is a stale reference: it refers to a TkColor that's no
 	     * longer in use. Clear the reference.
 	     */
-
 	    FreeColorObj(objPtr);
 	    tkColPtr = NULL;
 	} else if ((Tk_Screen(tkwin) == tkColPtr->screen)
@@ -129,7 +128,7 @@ Tk_AllocColorFromObj(
 
     /*
      * The object didn't point to the TkColor that we wanted. Search the list
-     * of TkColors with the same name to see if one of the other TkColors is
+     * of TkColors with the same name to see if one of the saved TkColors is
      * the right one.
      */
 
@@ -156,6 +155,7 @@ Tk_AllocColorFromObj(
     tkColPtr = (TkColor *)Tk_GetColor(interp, tkwin, Tcl_GetString(objPtr));
     objPtr->internalRep.twoPtrValue.ptr1 = tkColPtr;
     if (tkColPtr != NULL) {
+	/* The resourceRefCount is incremented by Tk_GetColor. */
 	tkColPtr->objRefCount++;
     }
     return (XColor *) tkColPtr;

macosx/README

@@ -366,13 +366,6 @@ need to manually change the TCL_SRCROOT and TK_SRCROOT settings by editing your
 ${USER}.pbxuser file (located inside the Tk.xcodeproj bundle directory) with a
 text editor.
 
-- To enable weak-linking, set the MACOSX_DEPLOYMENT_TARGET environment variable
-to the minimal OS version the binaries should be able to run on, e.g:
-	export MACOSX_DEPLOYMENT_TARGET=10.6
-This requires at least gcc 3.1; with gcc 4 or later, set/add to CFLAGS instead:
-	export CFLAGS="-mmacosx-version-min=10.6"
-Support for weak-linking was added with 8.4.14/8.5a5.
-
 Detailed Instructions for building with macosx/GNUmakefile
 ----------------------------------------------------------
 
@@ -390,8 +383,8 @@ Tcl/Tk version number, e.g. '8.7').
 Setup this shell variable as follows:
 	ver="8.7"
 
-- Setup environment variables as desired, e.g. for a universal build on 10.5:
-	CFLAGS="-arch x86_64 -arch arm64 -mmacosx-version-min=10.5"
+- Setup environment variables as desired, e.g. for a universal build on 10.9:
+	CFLAGS="-arch x86_64 -arch arm64 -mmacosx-version-min=10.9"
 	export CFLAGS
 
 - Change to the directory containing the Tcl and Tk source trees and build: