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Add help text for -MMD, -MD, -MM, -M, -MF. 

Also regroup these flags so that alike flags are next to each other, while
keeping the list still mostly alphabetical.

The help text isn't ideal, but I feel it's less maze-like than
http://gcc.gnu.org/onlinedocs/gcc-4.1.2/gcc/Preprocessor-Options.html (look
at the entry for '-MMD' and count how many other entries you need to look up
until you know what it does).

And it looks like -M / -MM are mostly an historical accident and most people
use -MD or -MMD for deps tracking these days, so make -M / -MM refer to
-MD / -MMD instead of the other way round.

llvm-svn: 199067
This commit is contained in:
Nico Weber 2014-01-12 23:12:35 +00:00
parent 9c826c100a
commit 0e224700de
1 changed files with 14 additions and 8 deletions
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22
clang/include/clang/Driver/Options.td
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@ -218,20 +218,26 @@ def I_ : Flag<["-"], "I-">, Group<I_Group>;
def I : JoinedOrSeparate<["-"], "I">, Group<I_Group>, Flags<[CC1Option]>,
HelpText<"Add directory to include search path">;
def L : JoinedOrSeparate<["-"], "L">, Flags<[RenderJoined]>;
def MD : Flag<["-"], "MD">, Group<M_Group>;
def MF : JoinedOrSeparate<["-"], "MF">, Group<M_Group>;
def MD : Flag<["-"], "MD">, Group<M_Group>,
HelpText<"Write a depfile containing user and system headers">;
def MMD : Flag<["-"], "MMD">, Group<M_Group>,
HelpText<"Write a depfile containing user headers">;
def M : Flag<["-"], "M">, Group<M_Group>,
HelpText<"Like -MD, but also implies -E and writes to stdout by default">;
def MM : Flag<["-"], "MM">, Group<M_Group>,
HelpText<"Like -MMD, but also implies -E and writes to stdout by default">;
def MF : JoinedOrSeparate<["-"], "MF">, Group<M_Group>,
HelpText<"Write depfile output from -MMD, -MD, -MM, or -M to <file>">,
MetaVarName<"<file>">;
def MG : Flag<["-"], "MG">, Group<M_Group>, Flags<[CC1Option]>,
HelpText<"Add missing headers to dependency list">;
def MMD : Flag<["-"], "MMD">, Group<M_Group>;
def MM : Flag<["-"], "MM">, Group<M_Group>;
HelpText<"Add missing headers to depfile">;
def MP : Flag<["-"], "MP">, Group<M_Group>, Flags<[CC1Option]>,
HelpText<"Create phony target for each dependency (other than main file)">;
def MQ : JoinedOrSeparate<["-"], "MQ">, Group<M_Group>, Flags<[CC1Option]>,
HelpText<"Specify target to quote for dependency">;
HelpText<"Specify name of main file output to quote in depfile">;
def MT : JoinedOrSeparate<["-"], "MT">, Group<M_Group>, Flags<[CC1Option]>,
HelpText<"Specify target for dependency">;
HelpText<"Specify name of main file output in depfile">;
def Mach : Flag<["-"], "Mach">;
def M : Flag<["-"], "M">, Group<M_Group>;
def O0 : Flag<["-"], "O0">, Group<O_Group>, Flags<[CC1Option]>;
def O4 : Flag<["-"], "O4">, Group<O_Group>, Flags<[CC1Option]>;
def ObjCXX : Flag<["-"], "ObjC++">, Flags<[DriverOption]>,