cannot buid the dependent project

[VanyaBelyaev]

• Checked for duplicates

I have my own project that uses ROOT (and Python)
my CMakeList file contains following ilnes

find_package(ROOT 6 CONFIG REQUIRED )
...
find_package(Python3 ${PY3VERSION_ROOT} COMPONENTS Interpreter Development NumPy)

And it build, works, and everything is fine

To follow up development in ROOT, I regularly rebuild my project using ROOT version from LCG nighlies dev3 build. And starting from Tuesday, August 31 I have a build error - numpy i snot found

-- Could NOT find Python3 (missing: Python3_NumPy_INCLUDE_DIRS NumPy) (found suitable version "3.9.6", minimum required is "3.9.6")

As a result all binaries/libraries in my project are invalid and result in segfaults.

It is not clear if this is ROOT,CMAKE or LCG-nighlies problem

Describe the bug

for ROOT-based project
cmake does not find NumPy for dev3 LCG nighlies built Staring form August 31, 2021

Expected behavior

cmake should find NumPy

To Reproduce

1. lxplus.cern.ch
2. source /cvmfs/sft.cern.ch/lcg/views/dev3/Tue/x86_64-centos7-gcc9-opt/setup.sh
3. any CMAKe project with these two ilnes included

find_package(ROOT 6 CONFIG REQUIRED )
...
find_package(Python3 3.6.9  COMPONENTS Interpreter Development NumPy)

Setup

Additional context

[etejedor]

I don't see any change around that date in ROOT's CMake files which could be the cause of this problem. I will have a look and let you know.

[etejedor]

@VanyaBelyaev I can't reproduce with latest dev3, does it still fail for you?

I use this CMakeLists.txt on lxplus, after sourcing latest dev3:

cmake_minimum_required(VERSION 3.16)

project(TestProject)

find_package(ROOT 6 CONFIG REQUIRED )
find_package(Python3 3.6.9  COMPONENTS Interpreter Development NumPy)

and the output I get for Python3 is:

-- Found Python3: /cvmfs/sft-nightlies.cern.ch/lcg/views/dev3/Tue/x86_64-centos7-gcc9-opt/bin/python3.9 (found suitable version "3.9.6", minimum required is "3.6.9") found components: Interpreter Development NumPy Development.Module Development.Embed 

There was maybe some temporary problem with the NumPy installation in dev3?

[dpiparo]

I am closing the issue since @etejedor himself could not reproduce. Please do not hesitate to re-open if more information becomes available.