file DOWNLOAD HASH mismatch error

[liesrock]

In the robotology-superbuild we are having a problem related with file DOWNLOAD HASH mismatch, here the details:

• Downloading CMakeParseArguments.cmake - Attempt 1 of 3
  CMake Error at cmake/IncludeUrl.cmake:281 (file):
  file DOWNLOAD HASH mismatch

  for file: [/home/lucamuratore/test-superbuild/build/CMakeFiles/CMakeParseArguments.cmake]
  expected hash: [0c4d3f7ed248145cbeb67cbd6fd7190baf2e4517]
  actual hash: [da39a3ee5e6b4b0d3255bfef95601890afd80709]
  status: [22;"HTTP response code said error"]

It did not appear in the past: what do you think @drdanz, @traversaro ?

[traversaro]

Mhh.. there is a way to reproduce the issue? I guess with Ubuntu 14.04 + CMake 3.5 built from source?

[liesrock]

It is both 16.04 + default CMake 3.5 and 14.04 + CMake 3.5 binaries.
if you just

git clone https://github.com/robotology-playground/robotology-superbuild.git test-superbuild
cd test-superbuild && mkdir build && cd build
cmake ..

You can see the error.

[traversaro]

I get it, it happens in all newly create build directories.
I added some info to the error:

-- Downloading CMakeParseArguments.cmake from https://raw.githubusercontent.com/robotology/ycm/master/cmake-next/Modules/CMakeParseArguments.cmake  - Attempt 2 of 3

[traversaro]

The problem is this recent commit: 8275d2e that changed the location of cmake-next/Modules/CMakeParseArguments.cmake to various version-specific location. I thin that for CMake 3.5 the easiest fix is to avoid download that file, given that is not necessary, but I have to understand where this information is encoded.

[traversaro]

_ycm_include https://github.com/robotology/ycm/blob/19fd29340a08e03757947cf59c111cf68aaf44d9/modules/YCMEPHelper.cmake#L94 is the macro to fix.