[CMake] How URL_MD5 is computed in ExternalProject_Add?

[CHEVRIER, Marc]

You can use FILE (MD5 <file> <variable>) command to compute MD5 value.

From: CMake on behalf of Cedric Doucet
Date: Tuesday 19 May 2015 13:14
To: "cmake at cmake.org<mailto:cmake at cmake.org>"
Subject: Re: [CMake] How URL_MD5 is computed in ExternalProject_Add?


I managed to obtain the same MD5 code by running the md5sum command on the downloaded file.
However, I would like to write an automatic way of downloading third-party libraries.
Is it possible to let CMake compute the MD5 of the downloaded file?

Cédric



________________________________
De: "Cedric Doucet" <cedric.doucet at inria.fr<mailto:cedric.doucet at inria.fr>>
À: cmake at cmake.org<mailto:cmake at cmake.org>
Envoyé: Mardi 19 Mai 2015 12:37:03
Objet: [CMake] How URL_MD5 is computed in ExternalProject_Add?

Hello,

I use the URL_MD5 variable to avoid downloading more than once a library with the ExternalProject_Add command.
However, I don't manage to get the same MD5 code as CMake when I try to get one with generators available on the internet.

How could I get the same one for an URL written in the form http://www.mywebsite.myext/mypath/myfile?
I have already tried the MD5 of the URL and of myfile but I don't get the same MD5 as CMake.

Thanks!

Cédric

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