Rearrange the -I flags for compiling _tkinter.c so that
/usr/local/include comes before /usr/X11R1/include. On some Linux
distributions the latter apparently contains (standard!) a bad tcl.h
or tk.h.
diff --git a/Modules/Setup.in b/Modules/Setup.in
index 8a05270..d6a9359 100644
--- a/Modules/Setup.in
+++ b/Modules/Setup.in
@@ -274,12 +274,12 @@
# *** Always uncomment this (leave the leading underscore in!):
# _tkinter _tkinter.c tkappinit.c -DWITH_APPINIT \
+# *** Uncomment and edit to reflect where your Tcl/Tk headers are:
+# -I/usr/local/include \
# *** Uncomment and edit to reflect where your X11 header files are:
# -I/usr/X11R6/include \
# *** Or uncomment this for Solaris:
# -I/usr/openwin/include \
-# *** Uncomment and edit to reflect where your Tcl/Tk headers are:
-# -I/usr/local/include \
# *** Uncomment and edit for Tix extension only:
# -DWITH_TIX -ltix4.1.8.0 \
# *** Uncomment and edit for BLT extension only: