--- a/tclconfig/tcl.m4	2024-11-05 20:59:09.219230897 +0100
+++ b/tclconfig/tcl.m4	2024-11-05 21:01:32.642430617 +0100
@@ -423,7 +423,6 @@
     AC_SUBST(TCL_STUB_LIB_SPEC)
 
     AC_MSG_CHECKING([platform])
-    hold_cc=$CC; CC="$TCL_CC"
     AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[
 	    #ifdef _WIN32
 		#error win32
@@ -436,7 +435,6 @@
 	    TEA_PLATFORM="windows"
 	    AC_CHECK_PROG(CYGPATH, cygpath, cygpath -m, echo)
     ])
-    CC=$hold_cc
     AC_MSG_RESULT($TEA_PLATFORM)
 
     # The BUILD_$pkg is to define the correct extern storage class
--- a/configure.ac	2024-11-05 21:02:53.670413146 +0100
+++ b/configure.ac	2024-11-05 21:03:19.630087072 +0100
@@ -30,6 +30,7 @@
 TEA_INIT()
 
 AC_CONFIG_AUX_DIR(tclconfig)
+AC_CONFIG_SUBDIRS([extensions/tnc extensions/example])
 
 #--------------------------------------------------------------------
 # Load the tclConfig.sh file