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conan install nss/3.71@ --build=nss --profile=/home/conan/w/BuildSingleReference/49053/f1ac8cc4-5471-4b2a-8263-c5568b795e16/profile.txt
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Configuration:
[settings]
arch=x86_64
build_type=Release
compiler=gcc
compiler.libcxx=libstdc++11
compiler.version=9
os=Linux
[options]
nss:shared=True
[build_requires]
[env]

nss/3.71: Forced build from source
Installing package: nss/3.71
Requirements
    nspr/4.29 from 'conan-center' - Cache
    nss/3.71 from local cache - Cache
Packages
    nspr/4.29:8fcfffafcf8b8b08d7682609dd0fc95b5d2bc08d - Cache
    nss/3.71:13019ac104cc647c0c18cdac3ca57ffd30bc0c9d - Build

Installing (downloading, building) binaries...
nspr/4.29: 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
nss/3.71: Copying sources to build folder
nss/3.71: Building your package in /home/conan/w/BuildSingleReference/.conan/data/nss/3.71/_/_/build/13019ac104cc647c0c18cdac3ca57ffd30bc0c9d
nss/3.71: Generator txt created conanbuildinfo.txt
nss/3.71: Aggregating env generators
nss/3.71: 
nss/3.71: WARN: Build folder is dirty, removing it: /home/conan/w/BuildSingleReference/.conan/data/nss/3.71/_/_/build/13019ac104cc647c0c18cdac3ca57ffd30bc0c9d
[HOOK - conan-center.py] pre_build(): ERROR: [FPIC MANAGEMENT (KB-H007)] 'fPIC' option not managed correctly. Please remove it for shared option: del self.options.fpic (https://github.com/conan-io/conan-center-index/blob/master/docs/error_knowledge_base.md#KB-H007) 
nss/3.71: ERROR: Package '13019ac104cc647c0c18cdac3ca57ffd30bc0c9d' build failed
nss/3.71: WARN: Build folder /home/conan/w/BuildSingleReference/.conan/data/nss/3.71/_/_/build/13019ac104cc647c0c18cdac3ca57ffd30bc0c9d
ERROR: [HOOK - conan-center.py] pre_build(): Some checks failed running the hook, check the output