[cmake-developers] cmake.exe parameters and system command line length limit

[Robert Goulet]

Hi David,

That option looks interesting. How do we populate it with the other CMake cache values that are originally set by CMake and not by our command line options?

Thanks.

-----Original Message-----
From: David Cole [mailto:DLRdave at aol.com] 
Sent: Monday, July 13, 2015 1:56 PM
To: Robert Goulet
Cc: cmake-developers at cmake.org
Subject: Re: [cmake-developers] cmake.exe parameters and system command line length limit

You could use the -C command line option to pass in the name of a file containing initial cache values. See the "-C <initial-cache>" section at the top of this documentation section:

    http://www.cmake.org/cmake/help/v3.3/manual/cmake.1.html#options

The format of the file is just a bunch of set(... CACHE ...) commands.
Read the doc paragraph carefully, and give it a try. Maybe somebody else can point to a valid example of a live -C file being used out there on the Internet.


HTH,
David C.



On Mon, Jul 13, 2015 at 1:44 PM, Robert Goulet <Robert.Goulet at autodesk.com> wrote:
> Hi all,
>
>
>
> We use a custom script to handle which parameters we set to cmake.exe 
> on Windows. It sets CMake values based on the options provided to this 
> script, using the -D cmake parameter. This works well, but recently 
> we’ve reached the limit on how many characters we can set to a single 
> system command line (cmd.exe), because our number of options is growing.
>
>
>
> Is there a work-around for this using CMake, or perhaps feed CMake 
> parameters from a file rather than from command-line parameters? i.e.
> “cmake.exe < params.txt” ?
>
>
>
> Thanks!
>
>
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