llvm dev - Jun 2009 - [LLVMdev] Programmatically setting command line options?

Hello,

Is there currently a way to set options, like -time-passes or -regalloc
from C++? I looked at the code in lib/Support/CommandLine.cpp, but the
stuff that comes closest to providing such functionality (mostly
GetOptionInfo()) is marked static.

Thanks,
Paul

On Sun, Jun 7, 2009 at 1:48 AM, Paul Melis<llvm at assumetheposition.nl>
wrote:
> Hello,
>
> Is there currently a way to set options, like -time-passes or -regalloc
> from C++? I looked at the code in lib/Support/CommandLine.cpp, but the
> stuff that comes closest to providing such functionality (mostly
> GetOptionInfo()) is marked static.
You can manipulate the command-line you pass to
llvm::cl::ParseCommandLineOptions; other than that, there isn't any
easy way to do it.  Patches to expose functionality using an option
into the C++ API are generally welcome if they are clean.

In an ideal world, I guess we wouldn't have any command-line options
in lib/, but adding options that way is really convenient :)

-Eli

Eli Friedman wrote:
> On Sun, Jun 7, 2009 at 1:48 AM, Paul Melis<llvm at
assumetheposition.nl> wrote:
>   
>> Hello,
>>
>> Is there currently a way to set options, like -time-passes or -regalloc
>> from C++? I looked at the code in lib/Support/CommandLine.cpp, but the
>> stuff that comes closest to providing such functionality (mostly
>> GetOptionInfo()) is marked static.
>>     
>
> You can manipulate the command-line you pass to
> llvm::cl::ParseCommandLineOptions; other than that, there isn't any
> easy way to do it.  Patches to expose functionality using an option
> into the C++ API are generally welcome if they are clean.
>   
Thanks! Using ParseCommandLineOptions will do for now, I
guess.
> In an ideal world, I guess we wouldn't have any command-line options
> in lib/, but adding options that way is really convenient :)
>   
Err,  yes, I can see from the sheer number of options defined there :)

Regards,
Paul