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conan install libxml2/2.9.10@ --profile=/home/conan/w/BuildSingleReference/6459/0a8f72d0-a58b-40a8-b86a-e57dc221ab3f/profile.txt --build=libxml2
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Configuration:
[settings]
arch=x86_64
arch_build=x86_64
build_type=Release
compiler=clang
compiler.libcxx=libstdc++
compiler.version=10
os=Linux
os_build=Linux
[options]
libxml2:shared=False
[build_requires]
[env]

libxml2/2.9.10: Forced build from source
Installing package: libxml2/2.9.10
Requirements
    libiconv/1.16 from 'conan-center' - Cache
    libxml2/2.9.10 from local cache - Cache
    zlib/1.2.11 from 'conan-center' - Cache
Packages
    libiconv/1.16:2b1e5ff9df96aaf5924c273e1368c632fcb32dd2 - Download
    libxml2/2.9.10:7e55ee9ca785482f82f0ce459f3a46395cbb636f - Build
    zlib/1.2.11:2b1e5ff9df96aaf5924c273e1368c632fcb32dd2 - Download
Build requirements
    pkgconf/1.7.3 from 'conan-center' - Cache
Build requirements packages
    pkgconf/1.7.3:2b1e5ff9df96aaf5924c273e1368c632fcb32dd2 - Missing

Installing (downloading, building) binaries...

ERROR: Missing binary: pkgconf/1.7.3:2b1e5ff9df96aaf5924c273e1368c632fcb32dd2
pkgconf/1.7.3: WARN: Can't find a 'pkgconf/1.7.3' package for the specified settings, options and dependencies:
- Settings: arch=x86_64, build_type=Release, compiler=clang, compiler.version=10, os=Linux
- Options: fPIC=True, shared=False
- Dependencies: 
- Requirements: 
- Package ID: 2b1e5ff9df96aaf5924c273e1368c632fcb32dd2

ERROR: Missing prebuilt package for 'pkgconf/1.7.3'
Try to build from sources with '--build=pkgconf'
Use 'conan search <reference> --table table.html'
Or read 'http://docs.conan.io/en/latest/faq/troubleshooting.html#error-missing-prebuilt-package'