@@ -19,14 +19,14 @@
 INSTDIR="$(pwd)/inst"
 PATCHSCRIPTDIR="$(pwd)/patchscripts"
 export SRC SRCURL BUILDDIR PATCHDIR OUTDIR INSTDIR PATCHSCRIPTDIR
 
 # Set configure options for this sub-project
-LDFLAGS="${KC_TK_LDFLAGS}"
-CFLAGS="${KC_TK_CFLAGS}"
-CPPFLAGS="${KC_TK_CPPFLAGS}"
-LIBS="${KC_TK_LIBS}"
+LDFLAGS="${LDFLAGS} ${KC_TK_LDFLAGS}"
+CFLAGS="${CFLAGS} ${KC_TK_CFLAGS}"
+CPPFLAGS="${CPPFLAGS} ${KC_TK_CPPFLAGS}"
+LIBS="${LIBS} ${KC_TK_LIBS}"
 export LDFLAGS CFLAGS CPPFLAGS LIBS
 
 # Must be kept in-sync with "../tcl/build.sh"
 TCLFOSSILDATE="../tcl/src/tcl${TCLVERS}.tar.gz.date"
 export TCLFOSSILDATE