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-rw-r--r--src/config.in22
1 files changed, 22 insertions, 0 deletions
diff --git a/src/config.in b/src/config.in
index c2dc3f8be5f..94e9a44b3b7 100644
--- a/src/config.in
+++ b/src/config.in
@@ -324,3 +324,25 @@ extern char *getenv ();
#endif
#endif /* EMACS_CONFIG_H */
+
+/* These default definitions are good for almost all machines.
+ The exceptions override them in m/*.h. */
+
+#ifndef BITS_PER_CHAR
+#define BITS_PER_CHAR 8
+#endif
+
+#ifndef BITS_PER_SHORT
+#define BITS_PER_SHORT 16
+#endif
+
+/* Note that lisp.h uses this in a preprocessor conditional, so it
+ would not work to use sizeof. That being so, we do all of them
+ without sizeof, for uniformity's sake. */
+#ifndef BITS_PER_INT
+#define BITS_PER_INT 32
+#endif
+
+#ifndef BITS_PER_LONG
+#define BITS_PER_LONG 32
+#endif