make vstart failed with ./do_cmake.sh -DWITH_JAEGER=ON CMake Error at /usr/share/cmake-3.10/Modules/FindPackageHandleStandardArgs.cmake:137 (message): 7266 <https://git.cafebazaar.ir/clwluvw/ceph/-/jobs/1164757#L7266> Could NOT find FLEX (missing: FLEX_EXECUTABLE) 7267 <https://git.cafebazaar.ir/clwluvw/ceph/-/jobs/1164757#L7267> Call Stack (most recent call first): 7268 <https://git.cafebazaar.ir/clwluvw/ceph/-/jobs/1164757#L7268> /usr/share/cmake-3.10/Modules/FindPackageHandleStandardArgs.cmake:378 (_FPHSA_FAILURE_MESSAGE) 7269 <https://git.cafebazaar.ir/clwluvw/ceph/-/jobs/1164757#L7269> /usr/share/cmake-3.10/Modules/FindFLEX.cmake:217 (FIND_PACKAGE_HANDLE_STANDARD_ARGS) 7270 <https://git.cafebazaar.ir/clwluvw/ceph/-/jobs/1164757#L7270> compiler/cpp/CMakeLists.txt:25 (find_package) 7271 <https://git.cafebazaar.ir/clwluvw/ceph/-/jobs/1164757#L7271> -- Configuring incomplete, errors occurred! 7272 <https://git.cafebazaar.ir/clwluvw/ceph/-/jobs/1164757#L7272> See also "/ceph/build/external/thrift/CMakeFiles/CMakeOutput.log". 7273 <https://git.cafebazaar.ir/clwluvw/ceph/-/jobs/1164757#L7273> See also "/ceph/build/external/thrift/CMakeFiles/CMakeError.log". 7274 <https://git.cafebazaar.ir/clwluvw/ceph/-/jobs/1164757#L7274> make[3]: *** [external/thrift/src/thrift-stamp/thrift-configure] Error 1 7275 <https://git.cafebazaar.ir/clwluvw/ceph/-/jobs/1164757#L7275> src/CMakeFiles/thrift.dir/build.make:106: recipe for target 'external/thrift/src/thrift-stamp/thrift-configure' failed 7276 <https://git.cafebazaar.ir/clwluvw/ceph/-/jobs/1164757#L7276> CMakeFiles/Makefile2:1384: recipe for target 'src/CMakeFiles/thrift.dir/all' failed 7277 <https://git.cafebazaar.ir/clwluvw/ceph/-/jobs/1164757#L7277> make[2]: *** [src/CMakeFiles/thrift.dir/all] Error 2 7278 <https://git.cafebazaar.ir/clwluvw/ceph/-/jobs/1164757#L7278> make[2]: *** Waiting for unfinished jobs....