* doc/options.texi (NoDriverArg): Document.

	* gcc.c (cpp_unique_options): Generate -MD and -MMD instead of
	-MDX and -MMDX.
	* opt-functions.awk (switch_flags): Handle NoDriverArg.
	* opts-common.c (decode_cmdline_option): Ignore CL_SEPARATE
	marking for CL_NO_DRIVER_ARG options when in the driver.
	* opts.h (CL_NO_DRIVER_ARG): Define.
	(CL_PARAMS, CL_WARNING, CL_OPTIMIZATION, CL_DRIVER, CL_TARGET,
	CL_COMMON): Update values.

c-family:
	* c.opt (MDX): Change back to MD.  Mark NoDriverArg instead of
	RejectDriver.
	(MMDX): Change back to MMD.  Mark NoDriverArg instead of
	RejectDriver.
	* c-opts.c (c_common_handle_option): Use OPT_MD and OPT_MMD
	instead of OPT_MDX and OPT_MMDX.

fortran:
	* lang.opt (MDX): Change back to MD.  Mark NoDriverArg instead of
	RejectDriver.
	(MMDX): Change back to MMD.  Mark NoDriverArg instead of
	RejectDriver.
	* cpp.c (gfc_cpp_handle_option): Use OPT_MD and OPT_MMD instead of
	OPT_MDX and OPT_MMDX.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@163280 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 6 insertions, 0 deletions

diff --git a/gcc/doc/options.texi b/gcc/doc/options.texi
index fff148defad..aac638bd1fe 100644
--- a/gcc/doc/options.texi
+++ b/gcc/doc/options.texi
@@ -159,6 +159,12 @@ option handler.  @code{UInteger} should also be used on options like
 @code{-falign-loops}=@var{n} are supported to make sure the saved
 options are given a full integer.
 
+@item NoDriverArg
+For an option marked @code{Separate}, the option only takes an
+argument in the compiler proper, not in the driver.  This is for
+compatibility with existing options that are used both directly and
+via @option{-Wp,}; new options should not have this property.
+
 @item Var(@var{var})
 The state of this option should be stored in variable @var{var}.
 The way that the state is stored depends on the type of option: