******************************************************************************** conan install libnl/3.2.25@ --profile=/home/conan/w/BuildSingleReference/1356/97d71959-1241-4b48-8a89-5890d7e7ad53/profile.txt --build=libnl ******************************************************************************** Configuration: [settings] arch=x86_64 arch_build=x86_64 build_type=Release compiler=gcc compiler.libcxx=libstdc++11 compiler.version=10 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:d0c219631d7c692d7a95436cf4e11fe2891dc312 - 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/3.5.3:21011818b664ba5f28bbba5f38f3117d33c4b91b - Missing flex/2.6.4:21011818b664ba5f28bbba5f38f3117d33c4b91b - Missing m4/1.4.18:73468d6cd433312abe58cd86e0da983f5d6f13ce - Download Installing (downloading, building) binaries... ERROR: Missing binary: bison/3.5.3:21011818b664ba5f28bbba5f38f3117d33c4b91b ERROR: Missing binary: flex/2.6.4:21011818b664ba5f28bbba5f38f3117d33c4b91b 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=Release, compiler=gcc, compiler.version=10, os=Linux - Options: fPIC=True - Dependencies: m4/1.4.18 - Requirements: m4/1.Y.Z - Package ID: 21011818b664ba5f28bbba5f38f3117d33c4b91b 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'