From c17701929ced30a8fc99d3dcaac37c77b30e970a Mon Sep 17 00:00:00 2001
From: Nicola Pero <nicola@gcc.gnu.org>
Date: Thu, 10 Jan 2002 11:53:19 +0000
Subject: Document the __OBJC__ macro.

From-SVN: r48724
---
 gcc/doc/cpp.texi | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'gcc')

diff --git a/gcc/doc/cpp.texi b/gcc/doc/cpp.texi
index 39ff7fd..3572384 100644
--- a/gcc/doc/cpp.texi
+++ b/gcc/doc/cpp.texi
@@ -1893,6 +1893,11 @@ calculate a single number, then compare that against a threshold:
 @noindent
 Many people find this form easier to understand.
 
+@item __OBJC__
+This macro is defined, with value 1, when the Objective-C compiler is in
+use.  You can use @code{__OBJC__} to test whether a header is compiled
+by a C compiler or a Objective-C compiler.
+
 @item __GNUG__
 The GNU C++ compiler defines this.  Testing it is equivalent to
 testing @code{@w{(__GNUC__ && __cplusplus)}}.
-- 
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