diff options
Diffstat (limited to 'clang/docs')
| -rw-r--r-- | clang/docs/ReleaseNotes.rst | 5 | ||||
| -rw-r--r-- | clang/docs/UsersManual.rst | 7 |
2 files changed, 11 insertions, 1 deletions
diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst index 8e9d298c959..7f823e38262 100644 --- a/clang/docs/ReleaseNotes.rst +++ b/clang/docs/ReleaseNotes.rst @@ -80,7 +80,10 @@ Non-comprehensive list of changes in this release New Compiler Flags ------------------ -- ... +- The -fgnuc-version= flag now controls the value of ``__GNUC__`` and related + macros. This flag does not enable or disable any GCC extensions implemented in + Clang. Setting the version to zero causes Clang to leave ``__GNUC__`` and + other GNU-namespaced macros, such as ``__GXX_WEAK__``, undefined. Deprecated Compiler Flags ------------------------- diff --git a/clang/docs/UsersManual.rst b/clang/docs/UsersManual.rst index 419714d38cd..de28d776715 100644 --- a/clang/docs/UsersManual.rst +++ b/clang/docs/UsersManual.rst @@ -701,6 +701,13 @@ Other Options ------------- Clang options that don't fit neatly into other categories. +.. option:: -fgnuc-version= + + This flag controls the value of ``__GNUC__`` and related macros. This flag + does not enable or disable any GCC extensions implemented in Clang. Setting + the version to zero causes Clang to leave ``__GNUC__`` and other + GNU-namespaced macros, such as ``__GXX_WEAK__``, undefined. + .. option:: -MV When emitting a dependency file, use formatting conventions appropriate |
