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authorDan Nicolaescu <dann@ics.uci.edu>2010-07-02 01:11:24 -0700
committerDan Nicolaescu <dann@ics.uci.edu>2010-07-02 01:11:24 -0700
commitd9170db5208a86d94a6d8a89c8fa1e678bd094bd (patch)
treef15dc1b36d3807346f6f346b1c229e53a6a72ca4 /src/lisp.h
parent986011195e5c40b9644c21da166c12cb34176350 (diff)
downloademacs-d9170db5208a86d94a6d8a89c8fa1e678bd094bd.tar.gz
Define USE_LISP_UNION_TYPE using autoconf.
* configure.in (--enable-use-lisp-union-type): New flag. * src/lisp.h: Document that USE_LISP_UNION_TYPE is now enabled using autoconf.
Diffstat (limited to 'src/lisp.h')
-rw-r--r--src/lisp.h7
1 files changed, 3 insertions, 4 deletions
diff --git a/src/lisp.h b/src/lisp.h
index 1941a2471a4..0da668bb87f 100644
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -95,10 +95,9 @@ extern void die P_((const char *, const char *, int)) NO_RETURN;
#endif
#endif /* ENABLE_CHECKING */
-/* Define this to make Lisp_Object use a union type instead of the
- default int. FIXME: It might be better to add a flag to configure
- to do this. */
-/* #define USE_LISP_UNION_TYPE */
+/* Use the configure flag --enable-use-lisp-union-type to make
+ Lisp_Object use a union type instead of the default int. The flag
+ causes USE_LISP_UNION_TYPE to be defined. */
/***** Select the tagging scheme. *****/
/* There are basically two options that control the tagging scheme: