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conan install easyhttpcpp/2.1.0@ --profile=/home/conan/w/BuildSingleReference/6663/0547e280-9462-4852-aa39-fb7dbaa13b63/profile.txt --build=easyhttpcpp
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Configuration:
[settings]
arch=x86_64
arch_build=x86_64
build_type=Debug
compiler=clang
compiler.libcxx=libstdc++
compiler.version=11
os=Linux
os_build=Linux
[options]
easyhttpcpp:shared=False
[build_requires]
[env]

easyhttpcpp/2.1.0: Forced build from source
Installing package: easyhttpcpp/2.1.0
Requirements
    apr/1.7.0 from 'conan-upstream' - Cache
    apr-util/1.6.1 from 'conan-upstream' - Cache
    bzip2/1.0.8 from 'conan-center' - Cache
    easyhttpcpp/2.1.0 from 'conan-upstream' - Cache
    expat/2.2.10 from 'conan-center' - Cache
    libmysqlclient/8.0.17 from 'conan-center' - Cache
    libpq/13.1 from 'conan-center' - Cache
    openssl/1.1.1g from 'conan-center' - Cache
    pcre/8.44 from 'conan-center' - Cache
    poco/1.10.1 from 'conan-upstream' - Cache
    sqlite3/3.34.0 from 'conan-center' - Cache
    zlib/1.2.11 from 'conan-center' - Cache
Packages
    apr/1.7.0:b750efe053a867200b76ea96639742f339f24362 - Download
    apr-util/1.6.1:13072cae04e99552ed1ebb997d5942906c6a3146 - Download
    bzip2/1.0.8:7c724e376772c2af7fcf54897249a8e186ca8ccd - Download
    easyhttpcpp/2.1.0:d0e6ce1f74cf83e8948b6fc2e19fc0dbd41cd3a0 - Build
    expat/2.2.10:05441c20e7e7a68951563eb6a1ae544f71dd7263 - Download
    libmysqlclient/8.0.17:d1c47f9ee5a90eed03ce9f0ea836c78fa64d05d1 - Download
    libpq/13.1:ceaca64350ceccf219cd79d7dba0d9c9300b64ff - Download
    openssl/1.1.1g:05441c20e7e7a68951563eb6a1ae544f71dd7263 - Download
    pcre/8.44:a5836c2112ce82326e47d08c7aff5095d03eac7e - Missing
    poco/1.10.1:64f9d883aae0c81cb0ebe196aa6cc88fafa2d7b2 - Missing
    sqlite3/3.34.0:657e03e6bcaff60c88175f54c4936c23199ab070 - Download
    zlib/1.2.11:05441c20e7e7a68951563eb6a1ae544f71dd7263 - Download

Installing (downloading, building) binaries...

WARN: poco/1.10.1: requirement openssl/1.1.1i overridden by easyhttpcpp/2.1.0 to openssl/1.1.1g 
WARN: apr-util/1.6.1: requirement expat/2.2.9 overridden by poco/1.10.1 to expat/2.2.10 
WARN: libmysqlclient/8.0.17: requirement openssl/1.1.1i overridden by poco/1.10.1 to openssl/1.1.1g 
ERROR: Missing binary: pcre/8.44:a5836c2112ce82326e47d08c7aff5095d03eac7e
ERROR: Missing binary: poco/1.10.1:64f9d883aae0c81cb0ebe196aa6cc88fafa2d7b2
pcre/8.44: WARN: Can't find a 'pcre/8.44' package for the specified settings, options and dependencies:
- Settings: arch=x86_64, build_type=Debug, compiler=clang, compiler.version=11, os=Linux
- Options: build_pcre_16=True, build_pcre_32=True, build_pcre_8=True, build_pcrecpp=False, build_pcregrep=True, fPIC=True, shared=False, with_bzip2=True, with_jit=False, with_stack_for_recursion=True, with_unicode_properties=False, with_utf=False, with_zlib=True, bzip2:build_executable=True, bzip2:fPIC=True, bzip2:shared=False, zlib:fPIC=True, zlib:minizip=False, zlib:shared=False
- Dependencies: bzip2/1.0.8, zlib/1.2.11
- Requirements: bzip2/1.Y.Z, zlib/1.Y.Z
- Package ID: a5836c2112ce82326e47d08c7aff5095d03eac7e

ERROR: Missing prebuilt package for 'pcre/8.44', 'poco/1.10.1'
Try to build from sources with '--build=pcre --build=poco'
Use 'conan search <reference> --table table.html'
Or read 'http://docs.conan.io/en/latest/faq/troubleshooting.html#error-missing-prebuilt-package'