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conan install opencl-icd-loader/2021.04.29@ --build=opencl-icd-loader --profile=C:\J\w\BuildSingleReference/20231/5651db58-0b27-400b-8933-275f6e198b27/profile.txt
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Configuration:
[settings]
arch=x86_64
arch_build=x86_64
build_type=Release
compiler=Visual Studio
compiler.runtime=MD
compiler.version=16
os=Windows
os_build=Windows
[options]
opencl-icd-loader:shared=False
[build_requires]
[env]

opencl-icd-loader/2021.04.29: Forced build from source
Installing package: opencl-icd-loader/2021.04.29
Requirements
    opencl-headers/2021.04.29 from 'conan-center' - Cache
    opencl-icd-loader/2021.04.29 from local cache - Cache
Packages
    opencl-headers/2021.04.29:5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9 - Cache
    opencl-icd-loader/2021.04.29:beffe2c720cd9783d4fe336c968f497fedb9a65f - Build

Installing (downloading, building) binaries...
opencl-headers/2021.04.29: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
opencl-icd-loader/2021.04.29: Copying sources to build folder
opencl-icd-loader/2021.04.29: Building your package in C:\J\w\BuildSingleReference\.conan\data\opencl-icd-loader\2021.04.29\_\_\build\beffe2c720cd9783d4fe336c968f497fedb9a65f
opencl-icd-loader/2021.04.29: Generator cmake created conanbuildinfo.cmake
[HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] 'fPIC' option not found
[HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] OK
opencl-icd-loader/2021.04.29: Calling build()
opencl-icd-loader/2021.04.29: 
opencl-headers/2021.04.29: WARN: Lib folder doesn't exist, can't collect libraries: C:\J\w\BuildSingleReference\.conan\data\opencl-headers\2021.04.29\_\_\package\5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9\lib
opencl-headers/2021.04.29: WARN: Lib folder doesn't exist, can't collect libraries: C:\J\w\BuildSingleReference\.conan\data\opencl-headers\2021.04.29\_\_\package\5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9\lib
opencl-icd-loader/2021.04.29: WARN: Build folder is dirty, removing it: C:\J\w\BuildSingleReference\.conan\data\opencl-icd-loader\2021.04.29\_\_\build\beffe2c720cd9783d4fe336c968f497fedb9a65f
opencl-icd-loader/2021.04.29: ERROR: Package 'beffe2c720cd9783d4fe336c968f497fedb9a65f' build failed
opencl-icd-loader/2021.04.29: WARN: Build folder C:\J\w\BuildSingleReference\.conan\data\opencl-icd-loader\2021.04.29\_\_\build\beffe2c720cd9783d4fe336c968f497fedb9a65f
ERROR: opencl-icd-loader/2021.04.29: Error in build() method, line 59
	self._patch_sources()
while calling '_patch_sources', line 55
	for patch in self.conan_data["patches"].get(self.version, []):
	KeyError: 'patches'