******************************************************************************** conan install libnl/3.2.25@ --profile=/home/conan/w/BuildSingleReference/1356/d6df4d92-4d4f-40f9-8256-d9ada334d583/profile.txt --build=libnl ******************************************************************************** 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] libnl:shared=True [build_requires] [env] libnl/3.2.25: Forced build from source Installing package: libnl/3.2.25 Requirements libnl/3.2.25 from 'conan-upstream' - Cache Packages libnl/3.2.25:e684bf6c51b647654d0dfc0d274c355fb83e3909 - Build Build requirements bison/3.5.3 from 'conan-center' - Cache flex/2.6.4 from 'conan-center' - Cache m4/1.4.18 from 'conan-center' - Cache Build requirements packages bison/3.5.3:49ecb7f57f8ea691ac471d1f6484fd3b4cc27ec6 - Missing flex/2.6.4:49ecb7f57f8ea691ac471d1f6484fd3b4cc27ec6 - Missing m4/1.4.18:64291af03c6fd75556706e361af2bd0adcb477a9 - Download Installing (downloading, building) binaries... ERROR: Missing binary: bison/3.5.3:49ecb7f57f8ea691ac471d1f6484fd3b4cc27ec6 ERROR: Missing binary: flex/2.6.4:49ecb7f57f8ea691ac471d1f6484fd3b4cc27ec6 bison/3.5.3: WARN: Can't find a 'bison/3.5.3' package for the specified settings, options and dependencies: - Settings: arch=x86_64, build_type=Debug, compiler=clang, compiler.version=11, os=Linux - Options: fPIC=True - Dependencies: m4/1.4.18 - Requirements: m4/1.Y.Z - Package ID: 49ecb7f57f8ea691ac471d1f6484fd3b4cc27ec6 ERROR: Missing prebuilt package for 'bison/3.5.3', 'flex/2.6.4' Try to build from sources with '--build=bison --build=flex' Use 'conan search --table table.html' Or read 'http://docs.conan.io/en/latest/faq/troubleshooting.html#error-missing-prebuilt-package'