-- Detected available Ceres threading models: [CXX_THREADS, NO_THREADS] -- Building with C++14 -- Found Eigen version : -- Enabling use of Eigen as a sparse linear algebra library. -- Building without LAPACK. -- Building without SuiteSparse. -- Building without CXSparse. -- Building without Apple's Accelerate sparse support. -- Use of gflags disabled - no tests or tools will be built! -- Compiling minimal glog substitute into Ceres. -- Using minimal glog substitute (include): internal/ceres/miniglog -- Max log level for minimal glog substitute: 2 -- Using Ceres threading model: CXX_THREADS -- Failed to find Google benchmark library, disabling build of benchmarks. -- Building Ceres as a static library. ================================================================================= -- Build type: Debug. Performance will be terrible! -- Add -DCMAKE_BUILD_TYPE=Release to the CMake command line to get an optimized build. ================================================================================= -- Do not build any example. CMake Warning: Manually-specified variables were not used by the project: CMAKE_DISABLE_FIND_PACKAGE_TBB CMAKE_EXPORT_NO_PACKAGE_REGISTRY CMAKE_INSTALL_BINDIR CMAKE_INSTALL_DATAROOTDIR CMAKE_INSTALL_INCLUDEDIR CMAKE_INSTALL_LIBDIR CMAKE_INSTALL_LIBEXECDIR CMAKE_INSTALL_OLDINCLUDEDIR CMAKE_INSTALL_SBINDIR GLOG_PREFER_EXPORTED_GLOG_CMAKE_CONFIGURATION CMake Warning: Manually-specified variables were not used by the project: CMAKE_EXPORT_NO_PACKAGE_REGISTRY /usr/bin/ld: cannot find -lceres clang: error: linker command failed with exit code 1 (use -v to see invocation) make[2]: *** [CMakeFiles/test_package.dir/build.make:84: bin/test_package] Error 1 make[1]: *** [CMakeFiles/Makefile2:76: CMakeFiles/test_package.dir/all] Error 2 make: *** [Makefile:84: all] Error 2 ERROR: ceres-solver/2.0.0 (test package): Error in build() method, line 11 cmake.build() ConanException: Error 2 while executing cmake --build '/home/conan/w/cci_PR-3697/2/ecd81b3a-9dad-417a-830a-e761474ee8db/recipes/ceres-solver/all/test_package/build/c23f5fa5b71fd06c63e44d2f118f87e5353a30dd' '--' '-j3'