Help: Document ObjC/ObjC++ flag variables

Signed-off-by: Alexander Borsuk <me@alex.bio>

Help/envvar/OBJCFLAGS.rst

@@ -0,0 +1,14 @@
+OBJCFLAGS
+---------
+
+.. versionadded:: 3.16
+
+.. include:: ENV_VAR.txt
+
+Add default compilation flags to be used when compiling ``Objective C`` files.
+
+.. |CMAKE_LANG_FLAGS| replace:: :variable:`CMAKE_OBJC_FLAGS <CMAKE_<LANG>_FLAGS>`
+.. |LANG| replace:: ``OBJC``
+.. include:: LANG_FLAGS.txt
+
+See also :variable:`CMAKE_OBJC_FLAGS_INIT <CMAKE_<LANG>_FLAGS_INIT>`.

Help/envvar/OBJCXXFLAGS.rst

@@ -0,0 +1,14 @@
+OBJCXXFLAGS
+-----------
+
+.. versionadded:: 3.16
+
+.. include:: ENV_VAR.txt
+
+Add default compilation flags to be used when compiling ``Objective C++`` (.mm) files.
+
+.. |CMAKE_LANG_FLAGS| replace:: :variable:`CMAKE_OBJCXX_FLAGS <CMAKE_<LANG>_FLAGS>`
+.. |LANG| replace:: ``OBJCXX``
+.. include:: LANG_FLAGS.txt
+
+See also :variable:`CMAKE_OBJCXX_FLAGS_INIT <CMAKE_<LANG>_FLAGS_INIT>`.

Help/manual/cmake-env-variables.7.rst

@@ -92,7 +92,9 @@ Environment Variables for Languages
    /envvar/ISPC
    /envvar/ISPCFLAGS
    /envvar/OBJC
+   /envvar/OBJCFLAGS
    /envvar/OBJCXX
+   /envvar/OBJCXXFLAGS
    /envvar/RC
    /envvar/RCFLAGS
    /envvar/SWIFTC

Help/variable/CMAKE_LANG_FLAGS.rst

@@ -24,6 +24,10 @@ combination with CMake's builtin defaults for the toolchain:
   Initialized by the :envvar:`HIPFLAGS` environment variable.
 * ``CMAKE_ISPC_FLAGS``:
   Initialized by the :envvar:`ISPCFLAGS` environment variable.
+* ``CMAKE_OBJC_FLAGS``:
+  Initialized by the :envvar:`OBJCFLAGS` environment variable.
+* ``CMAKE_OBJCXX_FLAGS``:
+  Initialized by the :envvar:`OBJCXXFLAGS` environment variable.
 
 This value is a command-line string fragment. Therefore, multiple options
 should be separated by spaces, and options with spaces should be quoted.