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| author | Nicola Pero <nicola@gcc.gnu.org> | 2002-01-10 11:53:19 +0000 |
|---|---|---|
| committer | Nicola Pero <nicola@gcc.gnu.org> | 2002-01-10 11:53:19 +0000 |
| commit | c17701929ced30a8fc99d3dcaac37c77b30e970a (patch) | |
| tree | d223cd47339d8a485c3370aafd05ce0baf3586d0 /gcc/doc/cpp.texi | |
| parent | 3987b9db30f95cd055f68d302da8e9c474b6feea (diff) | |
| download | gcc-c17701929ced30a8fc99d3dcaac37c77b30e970a.zip gcc-c17701929ced30a8fc99d3dcaac37c77b30e970a.tar.gz gcc-c17701929ced30a8fc99d3dcaac37c77b30e970a.tar.bz2 | |
Document the __OBJC__ macro.
From-SVN: r48724
Diffstat (limited to 'gcc/doc/cpp.texi')
| -rw-r--r-- | gcc/doc/cpp.texi | 5 |
1 files changed, 5 insertions, 0 deletions
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)}}. |