[CMake] Prevent ExternalProject from updating git submodules

[Tim Gallagher]

Hi Nicholas, 

I tried that and no luck. I've done both: 

ExternalProject_Add(... GIT_SUBMODULES "") 

and 

set(empty_list "") 
ExternalProject_Add(... GIT_SUBMODULES "${empty_list}") 

and it still tries to update the submodules. I know it's seeing the option -- if I pass in a name of a submodule that doesn't exist, it will crash when it tries to check out that made up one. But I can't seem to get it to not update any of them. 

Tim 

----- Original Message -----

From: "Nicholas Yue" <yue.nicholas at gmail.com> 
To: "tim gallagher" <tim.gallagher at gatech.edu> 
Sent: Friday, March 13, 2015 12:52:41 PM 
Subject: Re: [CMake] Prevent ExternalProject from updating git submodules 


Hi Tim, 


I use external project but not the GIT_SUBMODULES but maybe the following might work 


(1) Create an empty list 
(2) set GIT_SUBMODULES to that empty list 


Cheers 


On 13 March 2015 at 09:43, Tim Gallagher < tim.gallagher at gatech.edu > wrote: 


Hi everybody, 

I'm plugging away at using the ExternalProject features to package up our code. Looking at the documentation for ExternalProject_Add, it says: 

... 
[GIT_SUBMODULES modules...] # Git submodules that shall be updated, all if empty 
... 

which is cool, but what do I do if I don't want any submodules updated at all? It seems my only choices are: 

1. Update them all (leaving GIT_SUBMODULES empty) 
2. Update some of them (set GIT_SUBMODULES to a list to update) 

but there's no 3rd option of not updating them at all. 

Any advice on how to keep it from updating any submodules? 

Thanks, 

Tim 
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-- 


Nicholas Yue 
Graphics - Arnold, Alembic, RenderMan, OpenGL, HDF5 
Custom Dev - C++ porting, OSX, Linux, Windows 
http://au.linkedin.com/in/nicholasyue 
https://vimeo.com/channels/naiadtools 

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