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conan install libpqxx/7.3.0@ --profile=/home/conan/w/BuildSingleReference/1602/6c0a8859-1144-425a-99ac-ce24bead147e/profile.txt --build=libpqxx
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Configuration:
[settings]
arch=x86_64
arch_build=x86_64
build_type=Debug
compiler=gcc
compiler.libcxx=libstdc++11
compiler.version=10
os=Linux
os_build=Linux
[options]
libpqxx:shared=True
[build_requires]
[env]

libpqxx/7.3.0: Forced build from source
Installing package: libpqxx/7.3.0
Requirements
    libpq/12.2 from 'conan-center' - Cache
    libpqxx/7.3.0 from 'conan-upstream' - Cache
    zlib/1.2.11 from 'conan-center' - Cache
Packages
    libpq/12.2:07cea8fe023461f1e7001eee6e4a994d12a1049a - Missing
    libpqxx/7.3.0:ba9b648e7fbba647305de4dde8ce9f57dcd0251f - Build
    zlib/1.2.11:75e99b627c196b65c439728670655ec3c366b334 - Download

Installing (downloading, building) binaries...

ERROR: Missing binary: libpq/12.2:07cea8fe023461f1e7001eee6e4a994d12a1049a
libpq/12.2: WARN: Can't find a 'libpq/12.2' package for the specified settings, options and dependencies:
- Settings: arch=x86_64, build_type=Debug, compiler=gcc, compiler.version=10, os=Linux
- Options: disable_rpath=False, fPIC=True, shared=False, with_openssl=False, with_zlib=True, zlib:fPIC=True, zlib:minizip=False, zlib:shared=False
- Dependencies: zlib/1.2.11
- Requirements: zlib/1.Y.Z
- Package ID: 07cea8fe023461f1e7001eee6e4a994d12a1049a

ERROR: Missing prebuilt package for 'libpq/12.2'
Try to build from sources with '--build=libpq'
Use 'conan search <reference> --table table.html'
Or read 'http://docs.conan.io/en/latest/faq/troubleshooting.html#error-missing-prebuilt-package'