Nlohmann not installing to /usr/local/include - azure

Question

My vmImage is 'ubuntu-latest'.
When my build comes to nlohmann I get the following error:
-- Up-to-date: /usr/local/include
CMake Error at libraries/nlohmann_json/cmake_install.cmake:41 (file):
file INSTALL cannot set permissions on "/usr/local/include": Operation not
permitted.
Call Stack (most recent call first):
libraries/cmake_install.cmake:42 (include)
cmake_install.cmake:42 (include)
It works fine locally and also on the Windows and MacOS vmImage pipelines, so I am assuming this is some type of permissions issue/setting with DevOps?
The yaml file is as follows:
# Starter pipeline
trigger:
- master
pool:
vmImage: 'ubuntu-latest'
steps:
- task: UsePythonVersion#0
displayName: 'install python 3.x'
inputs:
versionSpec: '3.x'
addToPath: true
architecture: 'x64'
- task: CmdLine#2
displayName: 'install opengl'
inputs:
script: 'sudo apt-get -y install freeglut3 freeglut3-dev libglew1.5 libglew1.5-dev libglu1-mesa libglu1-mesa-dev libgl1-mesa-glx libgl1-mesa-dev'
failOnStderr: true
- task: CmdLine#2
displayName: 'install sdl'
inputs:
script: 'sudo apt-get install -y libsdl2-dev libsdl2-image-dev libsdl2-ttf-dev libsdl2-net-dev'
failOnStderr: true
- task: CmdLine#2
displayName: 'update google gpg key'
inputs:
script: 'wget -q -O - curl https://bazel.build/bazel-release.pub.gpg | sudo apt-key add -'
failOnStderr: false
- task: CmdLine#2
displayName: 'install gcc 10'
inputs:
script: 'sudo apt-get update && sudo add-apt-repository ppa:ubuntu-toolchain-r/test && sudo apt-get update && sudo apt-get -y install gcc-10 g++-10'
failOnStderr: true
- task: PythonScript#0
displayName: 'run build.py'
inputs:
scriptSource: 'filePath'
scriptPath: '$(Build.SourcesDirectory)/build.py'
failOnStderr: false

Answer 1

In the end, I disabled the install step of nlohmann json by doing the following before I added the subdirectory:
set(JSON_Install OFF CACHE INTERNAL "")