$OpenBSD: patch-Modules_FindTclsh_cmake,v 1.6 2019/08/21 05:47:40 rsadowski Exp $
Index: Modules/FindTclsh.cmake
--- Modules/FindTclsh.cmake.orig
+++ Modules/FindTclsh.cmake
@@ -20,14 +20,21 @@ In cygwin, look for the cygwin version first.  Don't l
 to avoid finding the cygwin version on a Win32 build.
 #]=======================================================================]
 
+set(MODTCL_VERSION $ENV{MODTCL_VERSION})
+set(MODTK_VERSION $ENV{MODTK_VERSION})
+
 if(CYGWIN)
   find_program(TCL_TCLSH NAMES cygtclsh83 cygtclsh80)
 endif()
 
 get_filename_component(TK_WISH_PATH "${TK_WISH}" PATH)
 get_filename_component(TK_WISH_PATH_PARENT "${TK_WISH_PATH}" PATH)
-string(REGEX REPLACE
-  "^.*wish([0-9]\\.*[0-9]).*$" "\\1" TK_WISH_VERSION "${TK_WISH}")
+if(MODTK_VERSION)
+  set(TK_WISH_VERSION "${MODTK_VERSION}")
+else(MODTK_VERSION)
+  string(REGEX REPLACE
+    "^.*wish([0-9]\\.*[0-9]).*$" "\\1" TK_WISH_VERSION "${TK_WISH}")
+endif(MODTK_VERSION)
 
 get_filename_component(TCL_INCLUDE_PATH_PARENT "${TCL_INCLUDE_PATH}" PATH)
 get_filename_component(TK_INCLUDE_PATH_PARENT "${TK_INCLUDE_PATH}" PATH)
