Index: tcl/build.sh
==================================================================
--- tcl/build.sh
+++ tcl/build.sh
@@ -69,10 +69,11 @@
 				tar -cf - "tcl${TCLVERS}" | gzip -c > "../${SRC}"
 			fi
 
 			rm -f "tmp-tcl.zip" "tmp-itcl.zip" "tmp-thread.zip" "tmp-tclconfig.zip"
 			rm -rf "tcl-${CVSTAG}" "itcl-${CVSTAG}" "thread-${CVSTAG}" "tclconfig-${CVSTAG}"
+			rm -rf "tcl${TCLVERS}"
 		)
 	else
 		rm -f "${SRC}.tmp"
 		wget -O "${SRC}.tmp" "${SRCURL}" || exit 1
 		mv "${SRC}.tmp" "${SRC}"
@@ -110,21 +111,10 @@
 				. "${patchscript}"
 			)
 		fi
 	done
 
-	# Patch Win32 builds to always provide DllMain if we are building KitDLL
-	if [ "${KITTARGET}" = "kitdll" ]; then
-		## DllMain is needed when building KitDLL
-		for filetopatch in win/tclWin32Dll.c win/tclWinInit.c; do
-			echo "Undefining STATIC_BUILD in \"${filetopatch}\""
-
-			sed 's@STATIC_BUILD@NEVER_STATIC_BUILD@g' "${filetopatch}" > "${filetopatch}.new" && cat "${filetopatch}.new" > "${filetopatch}"
-			rm -f "${filetopatch}.new"
-		done
-	fi
-
 	for dir in unix win macosx __fail__; do
 		if [ "${dir}" = "__fail__" ]; then
 			# If we haven't figured out how to build it, reject.
 
 			exit 1

ADDED   tcl/patchscripts/visibility-unhidden.sh
Index: tcl/patchscripts/visibility-unhidden.sh
==================================================================
--- /dev/null
+++ tcl/patchscripts/visibility-unhidden.sh
@@ -0,0 +1,11 @@
+#! /bin/bash
+
+if [ "${KITTARGET}" != "kitdll" ]; then
+	exit 0
+fi
+
+for file in unix/configure; do
+	sed 's@-fvisibility@-__disabled__fvisibility@' "${file}" > "${file}.new"
+	cat "${file}.new" > "${file}"
+	rm -f "${file}.new"
+done

ADDED   tcl/patchscripts/win32-dllmain.sh
Index: tcl/patchscripts/win32-dllmain.sh
==================================================================
--- /dev/null
+++ tcl/patchscripts/win32-dllmain.sh
@@ -0,0 +1,13 @@
+#! /bin/bash
+
+if [ "${KITTARGET}" != "kitdll" ]; then
+	exit 0
+fi
+
+## DllMain is needed when building KitDLL
+for filetopatch in win/tclWin32Dll.c win/tclWinInit.c; do
+	echo "Undefining STATIC_BUILD in \"${filetopatch}\""
+
+	sed 's@STATIC_BUILD@NEVER_STATIC_BUILD@g' "${filetopatch}" > "${filetopatch}.new" && cat "${filetopatch}.new" > "${filetopatch}"
+	rm -f "${filetopatch}.new"
+done

Index: tk/build.sh
==================================================================
--- tk/build.sh
+++ tk/build.sh
@@ -15,11 +15,12 @@
 SRCURL="http://prdownloads.sourceforge.net/tcl/tk${TCLVERS}-src.tar.gz"
 BUILDDIR="$(pwd)/build/tk${TCLVERS}"
 PATCHDIR="$(pwd)/patches"
 OUTDIR="$(pwd)/out"
 INSTDIR="$(pwd)/inst"
-export SRC SRCURL BUILDDIR PATCHDIR OUTDIR INSTDIR
+PATCHSCRIPTDIR="$(pwd)/patchscripts"
+export SRC SRCURL BUILDDIR PATCHDIR OUTDIR INSTDIR PATCHSCRIPTDIR
 
 rm -rf 'build' 'out' 'inst'
 mkdir 'build' 'out' 'inst' || exit 1
 
 # Determine Tcl version
@@ -56,10 +57,11 @@
                                 
 				tar -cf - "tk${TCLVERS}" | gzip -c > "../${SRC}"
 			fi
 
 			rm -f "tmp-tk.zip"
+			rm -rf "tk-${CVSTAG}"
 			rm -rf "tk${TCLVERS}"
 		)
 	else
 		rm -f "${SRC}.tmp"
 		wget -O "${SRC}.tmp" "${SRCURL}" || exit 1
@@ -98,10 +100,21 @@
 
 			echo "Applying: ${patch}"
 			${PATCH:-patch} -p1 < "${patch}"
 		done
 	)
+
+	# Apply patch scripts if needed
+	for patchscript in "${PATCHSCRIPTDIR}"/*.sh; do
+		if [ -f "${patchscript}" ]; then
+			echo "Running patch script: ${patchscript}"
+                                
+			(
+				. "${patchscript}"
+			)
+		fi
+	done
 
 	for dir in unix win macosx win64 __fail__; do
 		if [ "${dir}" = "__fail__" ]; then
 			exit 1
 		fi

ADDED   tk/patchscripts/visibility-unhidden.sh
Index: tk/patchscripts/visibility-unhidden.sh
==================================================================
--- /dev/null
+++ tk/patchscripts/visibility-unhidden.sh
@@ -0,0 +1,11 @@
+#! /bin/bash
+
+if [ "${KITTARGET}" != "kitdll" ]; then
+	exit 0
+fi
+
+for file in unix/configure; do
+	sed 's@-fvisibility@-__disabled__fvisibility@' "${file}" > "${file}.new"
+	cat "${file}.new" > "${file}"
+	rm -f "${file}.new"
+done