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conan install libssh2/1.8.0@ --build=libssh2 --profile=/home/conan/w/BuildSingleReference/68529/6db39760-fc70-450e-9b14-ed656c0f09bf/profile.txt
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Configuration:
[settings]
arch=x86_64
build_type=Debug
compiler=gcc
compiler.libcxx=libstdc++11
compiler.version=11
os=Linux
[options]
libssh2:shared=False
[build_requires]
[env]

libssh2/1.8.0: Forced build from source
Installing package: libssh2/1.8.0
Requirements
    libssh2/1.8.0 from local cache - Cache
    openssl/1.1.1l from 'conan-center' - Cache
    zlib/1.2.11 from 'conan-center' - Cache
Packages
    libssh2/1.8.0:676da74f698ac71d9dfb6fe9f2f7688ca5645d66 - Build
    openssl/1.1.1l:be27726f9885116da1158027505be62e913cd585 - Missing
    zlib/1.2.11:be27726f9885116da1158027505be62e913cd585 - Download

Installing (downloading, building) binaries...

ERROR: Missing binary: openssl/1.1.1l:be27726f9885116da1158027505be62e913cd585
openssl/1.1.1l: WARN: Can't find a 'openssl/1.1.1l' package for the specified settings, options and dependencies:
- Settings: arch=x86_64, build_type=Debug, compiler=gcc, compiler.version=11, os=Linux
- Options: 386=False, enable_weak_ssl_ciphers=False, fPIC=True, no_aria=False, no_asm=False, no_async=False, no_bf=False, no_blake2=False, no_camellia=False, no_cast=False, no_chacha=False, no_cms=False, no_comp=False, no_ct=False, no_deprecated=False, no_des=False, no_dgram=False, no_dh=False, no_dsa=False, no_dso=False, no_ec=False, no_ecdh=False, no_ecdsa=False, no_engine=False, no_filenames=False, no_gost=False, no_hmac=False, no_idea=False, no_md4=False, no_md5=False, no_mdc2=False, no_ocsp=False, no_pinshared=False, no_rc2=False, no_rfc3779=False, no_rmd160=False, no_rsa=False, no_seed=False, no_sha=False, no_sm2=False, no_sm3=False, no_sm4=False, no_sock=False, no_srp=False, no_srtp=False, no_sse2=False, no_ssl=False, no_ssl3=False, no_stdio=False, no_tests=False, no_threads=False, no_tls1=False, no_ts=False, no_whirlpool=False, openssldir=None, shared=False
- Dependencies: 
- Requirements: 
- Package ID: be27726f9885116da1158027505be62e913cd585

ERROR: Missing prebuilt package for 'openssl/1.1.1l'
Use 'conan search openssl/1.1.1l --table=table.html -r=remote' and open the table.html file to see available packages
Or try to build locally from sources with '--build=openssl'

More Info at 'https://docs.conan.io/en/latest/faq/troubleshooting.html#error-missing-prebuilt-package'