******************************************************************************** conan install dlib/19.21@#ef83c719bdc7ff089aa2b5a7e1242954 --build=dlib -pr /home/conan/w/prod/BuildSingleReference/269022/52582ac4-31b8-4555-a50a-6b0642fb4a15/profile_linux_11_libstdcpp11_gcc_release_64.dlib-shared-False.txt -c tools.system.package_manager:mode=install -c tools.system.package_manager:sudo=True ******************************************************************************** Auto detecting your dev setup to initialize the default profile (/home/conan/w/prod/BuildSingleReference/.conan/profiles/default) Found gcc 11.1 gcc>=5, using the major as version ************************* WARNING: GCC OLD ABI COMPATIBILITY *********************** Conan detected a GCC version > 5 but has adjusted the 'compiler.libcxx' setting to 'libstdc++' for backwards compatibility. Your compiler is likely using the new CXX11 ABI by default (libstdc++11). If you want Conan to use the new ABI for the default profile, run: $ conan profile update settings.compiler.libcxx=libstdc++11 default Or edit '/home/conan/w/prod/BuildSingleReference/.conan/profiles/default' and set compiler.libcxx=libstdc++11 ************************************************************************************ Default settings os=Linux os_build=Linux arch=x86_64 arch_build=x86_64 compiler=gcc compiler.version=11 compiler.libcxx=libstdc++ build_type=Release *** You can change them in /home/conan/w/prod/BuildSingleReference/.conan/profiles/default *** *** Or override with -s compiler='other' -s ...s*** Configuration: [settings] arch=x86_64 build_type=Release compiler=gcc compiler.libcxx=libstdc++11 compiler.version=11 os=Linux [options] dlib:shared=False [build_requires] [env] [conf] tools.system.package_manager:mode=install tools.system.package_manager:sudo=True giflib/5.2.1: Not found in local cache, looking in remotes... giflib/5.2.1: Trying with 'conan-center'... Downloading conanmanifest.txt Downloading conanfile.py Downloading conan_export.tgz giflib/5.2.1: Downloaded recipe revision 15033c544d771fa992cda180c0a1f8e0 libjpeg/9e: Not found in local cache, looking in remotes... libjpeg/9e: Trying with 'conan-center'... Downloading conanmanifest.txt Downloading conanfile.py Downloading conan_export.tgz libjpeg/9e: Downloaded recipe revision 68269859e4325ddc3f995d1fd3fc9187 libpng/1.6.40: Not found in local cache, looking in remotes... libpng/1.6.40: Trying with 'conan-center'... Downloading conanmanifest.txt Downloading conanfile.py Downloading conan_export.tgz libpng/1.6.40: Downloaded recipe revision 3b63a2aa000933a57a53322207790714 zlib/1.2.13: Not found in local cache, looking in remotes... zlib/1.2.13: Trying with 'conan-center'... Downloading conanmanifest.txt Downloading conanfile.py Downloading conan_export.tgz zlib/1.2.13: Downloaded recipe revision e377bee636333ae348d51ca90874e353 sqlite3/3.42.0: Not found in local cache, looking in remotes... sqlite3/3.42.0: Trying with 'conan-center'... Downloading conanmanifest.txt Downloading conanfile.py Downloading conan_export.tgz sqlite3/3.42.0: Downloaded recipe revision a731fc3f0c93706bb5ced39cdee508d5 openblas/0.3.20: Not found in local cache, looking in remotes... openblas/0.3.20: Trying with 'conan-center'... Downloading conanmanifest.txt Downloading conanfile.py Downloading conan_export.tgz openblas/0.3.20: Downloaded recipe revision bc54895c0f1f0a58c8ea414a3be55950 dlib/19.21: Forced build from source Installing package: dlib/19.21 Requirements dlib/19.21 from local cache - Cache giflib/5.2.1 from 'conan-center' - Downloaded libjpeg/9e from 'conan-center' - Downloaded libpng/1.6.40 from 'conan-center' - Downloaded openblas/0.3.20 from 'conan-center' - Downloaded sqlite3/3.42.0 from 'conan-center' - Downloaded zlib/1.2.13 from 'conan-center' - Downloaded Packages dlib/19.21:e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa - Build giflib/5.2.1:2d55cd91348dc40b923ee4b2ea4affa4404efa6d - Download libjpeg/9e:dfbe50feef7f3c6223a476cd5aeadb687084a646 - Download libpng/1.6.40:025ffc7158b5e62f5f3ed9af91d48958d216f972 - Download openblas/0.3.20:1611de3a5677d1d94d77e7279247aa09f53735bb - Download sqlite3/3.42.0:8fc930bdbf940331d9f322f454eac3dd06fd27e8 - Download zlib/1.2.13:dfbe50feef7f3c6223a476cd5aeadb687084a646 - Download Installing (downloading, building) binaries... giflib/5.2.1: Retrieving package 2d55cd91348dc40b923ee4b2ea4affa4404efa6d from remote 'conan-center' Downloading conanmanifest.txt Downloading conaninfo.txt Downloading conan_package.tgz giflib/5.2.1: Package installed 2d55cd91348dc40b923ee4b2ea4affa4404efa6d giflib/5.2.1: Downloaded package revision b4f517d6925c6c41871d51535ba7db8c libjpeg/9e: Retrieving package dfbe50feef7f3c6223a476cd5aeadb687084a646 from remote 'conan-center' Downloading conanmanifest.txt Downloading conaninfo.txt Downloading conan_package.tgz libjpeg/9e: Package installed dfbe50feef7f3c6223a476cd5aeadb687084a646 libjpeg/9e: Downloaded package revision 89c9dc698a7f4cc2daf75f967bc4bed9 openblas/0.3.20: Retrieving package 1611de3a5677d1d94d77e7279247aa09f53735bb from remote 'conan-center' Downloading conanmanifest.txt Downloading conaninfo.txt Downloading conan_package.tgz openblas/0.3.20: Package installed 1611de3a5677d1d94d77e7279247aa09f53735bb openblas/0.3.20: Downloaded package revision 53366f6652d5651c8920e6575df22ead sqlite3/3.42.0: Retrieving package 8fc930bdbf940331d9f322f454eac3dd06fd27e8 from remote 'conan-center' Downloading conanmanifest.txt Downloading conaninfo.txt Downloading conan_package.tgz sqlite3/3.42.0: Package installed 8fc930bdbf940331d9f322f454eac3dd06fd27e8 sqlite3/3.42.0: Downloaded package revision aba5671007cfd39e3e58235d058c36ea zlib/1.2.13: Retrieving package dfbe50feef7f3c6223a476cd5aeadb687084a646 from remote 'conan-center' Downloading conanmanifest.txt Downloading conaninfo.txt Downloading conan_package.tgz zlib/1.2.13: Package installed dfbe50feef7f3c6223a476cd5aeadb687084a646 zlib/1.2.13: Downloaded package revision 3296a45a5461236ca44cc002dfb53b82 libpng/1.6.40: Retrieving package 025ffc7158b5e62f5f3ed9af91d48958d216f972 from remote 'conan-center' Downloading conanmanifest.txt Downloading conaninfo.txt Downloading conan_package.tgz libpng/1.6.40: Package installed 025ffc7158b5e62f5f3ed9af91d48958d216f972 libpng/1.6.40: Downloaded package revision f670cfbbb2c8a43b040f42831f9aa83b openblas/0.3.20: Setting OpenBLAS_HOME environment variable: /home/conan/w/prod/BuildSingleReference/.conan/data/openblas/0.3.20/_/_/package/1611de3a5677d1d94d77e7279247aa09f53735bb [HOOK - conan-center.py] pre_source(): [IMMUTABLE SOURCES (KB-H010)] OK dlib/19.21: Configuring sources in /home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/source dlib/19.21: [HOOK - conan-center.py] post_source(): [LIBCXX MANAGEMENT (KB-H011)] OK [HOOK - conan-center.py] post_source(): [CPPSTD MANAGEMENT (KB-H022)] OK [HOOK - conan-center.py] post_source(): [SHORT_PATHS USAGE (KB-H066)] OK dlib/19.21: Copying sources to build folder dlib/19.21: Building your package in /home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/build/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa dlib/19.21: Generator txt created conanbuildinfo.txt dlib/19.21: Calling generate() dlib/19.21: Preset 'release' added to CMakePresets.json. Invoke it manually using 'cmake --preset release' dlib/19.21: If your CMake version is not compatible with CMakePresets (<3.19) call cmake like: 'cmake -G "Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE=/home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/build/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa/conan_toolchain.cmake -DCMAKE_POLICY_DEFAULT_CMP0091=NEW -DCMAKE_BUILD_TYPE=Release' dlib/19.21: Aggregating env generators [HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] OK. 'fPIC' option found and apparently well managed [HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] OK dlib/19.21: Calling build() dlib/19.21: CMake command: cmake -G "Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE="/home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/build/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa/conan_toolchain.cmake" -DCMAKE_INSTALL_PREFIX="/home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/package/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa" -DCMAKE_POLICY_DEFAULT_CMP0091="NEW" -DCMAKE_BUILD_TYPE="Release" "/home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/build/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa/dlib" ----Running------ > cmake -G "Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE="/home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/build/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa/conan_toolchain.cmake" -DCMAKE_INSTALL_PREFIX="/home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/package/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa" -DCMAKE_POLICY_DEFAULT_CMP0091="NEW" -DCMAKE_BUILD_TYPE="Release" "/home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/build/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa/dlib" ----------------- -- Using Conan toolchain: /home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/build/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa/conan_toolchain.cmake -- Conan toolchain: Setting CMAKE_POSITION_INDEPENDENT_CODE=ON (options.fPIC) -- Conan toolchain: Setting BUILD_SHARED_LIBS = OFF -- The C compiler identification is GNU 11.1.0 -- The CXX compiler identification is GNU 11.1.0 -- Check for working C compiler: /usr/local/bin/cc -- Check for working C compiler: /usr/local/bin/cc -- works -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Detecting C compile features -- Detecting C compile features - done -- Check for working CXX compiler: /usr/local/bin/c++ -- Check for working CXX compiler: /usr/local/bin/c++ -- works -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Detecting CXX compile features -- Detecting CXX compile features - done -- Using CMake version: 3.15.7 -- Compiling dlib version: 19.21.0 -- Looking for pthread.h -- Looking for pthread.h - found -- Performing Test CMAKE_HAVE_LIBC_PTHREAD -- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Failed -- Looking for pthread_create in pthreads -- Looking for pthread_create in pthreads - not found -- Looking for pthread_create in pthread -- Looking for pthread_create in pthread - found -- Found Threads: TRUE -- Found system copy of libpng: PNG::PNG -- Found system copy of libjpeg: JPEG::JPEG -- Searching for BLAS and LAPACK -- Searching for BLAS and LAPACK -- Found PkgConfig: /usr/bin/pkg-config (found version "0.29.1") -- Checking for module 'cblas' -- No package 'cblas' found -- Checking for module 'lapack' -- No package 'lapack' found -- Looking for sys/types.h -- Looking for sys/types.h - found -- Looking for stdint.h -- Looking for stdint.h - found -- Looking for stddef.h -- Looking for stddef.h - found -- Check size of void* -- Check size of void* - done -- Found OpenBLAS library -- Looking for sgetrf_single -- Looking for sgetrf_single - not found -- Looking for cblas_ddot -- Looking for cblas_ddot - not found -- BLAS library does not have cblas symbols, so dlib will not use BLAS or LAPACK -- Found BLAS: /home/conan/w/prod/BuildSingleReference/.conan/data/openblas/0.3.20/_/_/package/1611de3a5677d1d94d77e7279247aa09f53735bb/lib/libopenblas.a;-lpthread -- Conan: Component target declared 'SQLite::SQLite3' -- C++11 activated. -- Configuring done -- Generating done -- Build files have been written to: /home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/build/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa dlib/19.21: CMake command: cmake --build "/home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/build/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa" '--' '-j3' ----Running------ > cmake --build "/home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/build/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa" '--' '-j3' ----------------- Scanning dependencies of target dlib [ 3%] Building CXX object CMakeFiles/dlib.dir/bigint/bigint_kernel_2.cpp.o [ 3%] Building CXX object CMakeFiles/dlib.dir/bigint/bigint_kernel_1.cpp.o [ 5%] Building CXX object CMakeFiles/dlib.dir/base64/base64_kernel_1.cpp.o [ 7%] Building CXX object CMakeFiles/dlib.dir/bit_stream/bit_stream_kernel_1.cpp.o [ 9%] Building CXX object CMakeFiles/dlib.dir/entropy_decoder/entropy_decoder_kernel_1.cpp.o [ 11%] Building CXX object CMakeFiles/dlib.dir/entropy_decoder/entropy_decoder_kernel_2.cpp.o [ 13%] Building CXX object CMakeFiles/dlib.dir/entropy_encoder/entropy_encoder_kernel_1.cpp.o [ 15%] Building CXX object CMakeFiles/dlib.dir/entropy_encoder/entropy_encoder_kernel_2.cpp.o [ 17%] Building CXX object CMakeFiles/dlib.dir/md5/md5_kernel_1.cpp.o [ 19%] Building CXX object CMakeFiles/dlib.dir/tokenizer/tokenizer_kernel_1.cpp.o [ 21%] Building CXX object CMakeFiles/dlib.dir/unicode/unicode.cpp.o [ 23%] Building CXX object CMakeFiles/dlib.dir/test_for_odr_violations.cpp.o [ 25%] Building CXX object CMakeFiles/dlib.dir/sockets/sockets_kernel_1.cpp.o [ 27%] Building CXX object CMakeFiles/dlib.dir/bsp/bsp.cpp.o [ 29%] Building CXX object CMakeFiles/dlib.dir/dir_nav/dir_nav_kernel_1.cpp.o [ 31%] Building CXX object CMakeFiles/dlib.dir/dir_nav/dir_nav_kernel_2.cpp.o [ 33%] Building CXX object CMakeFiles/dlib.dir/dir_nav/dir_nav_extensions.cpp.o [ 35%] Building CXX object CMakeFiles/dlib.dir/linker/linker_kernel_1.cpp.o [ 37%] Building CXX object CMakeFiles/dlib.dir/logger/extra_logger_headers.cpp.o [ 39%] Building CXX object CMakeFiles/dlib.dir/logger/logger_kernel_1.cpp.o [ 41%] Building CXX object CMakeFiles/dlib.dir/logger/logger_config_file.cpp.o [ 43%] Building CXX object CMakeFiles/dlib.dir/misc_api/misc_api_kernel_1.cpp.o [ 45%] Building CXX object CMakeFiles/dlib.dir/misc_api/misc_api_kernel_2.cpp.o [ 47%] Building CXX object CMakeFiles/dlib.dir/sockets/sockets_extensions.cpp.o [ 49%] Building CXX object CMakeFiles/dlib.dir/sockets/sockets_kernel_2.cpp.o [ 50%] Building CXX object CMakeFiles/dlib.dir/sockstreambuf/sockstreambuf.cpp.o [ 52%] Building CXX object CMakeFiles/dlib.dir/sockstreambuf/sockstreambuf_unbuffered.cpp.o [ 54%] Building CXX object CMakeFiles/dlib.dir/server/server_kernel.cpp.o [ 56%] Building CXX object CMakeFiles/dlib.dir/server/server_iostream.cpp.o [ 58%] Building CXX object CMakeFiles/dlib.dir/server/server_http.cpp.o [ 60%] Building CXX object CMakeFiles/dlib.dir/threads/multithreaded_object_extension.cpp.o [ 62%] Building CXX object CMakeFiles/dlib.dir/threads/threaded_object_extension.cpp.o [ 64%] Building CXX object CMakeFiles/dlib.dir/threads/threads_kernel_1.cpp.o [ 66%] Building CXX object CMakeFiles/dlib.dir/threads/threads_kernel_2.cpp.o [ 68%] Building CXX object CMakeFiles/dlib.dir/threads/threads_kernel_shared.cpp.o [ 70%] Building CXX object CMakeFiles/dlib.dir/threads/thread_pool_extension.cpp.o [ 72%] Building CXX object CMakeFiles/dlib.dir/threads/async.cpp.o [ 74%] Building CXX object CMakeFiles/dlib.dir/timer/timer.cpp.o [ 76%] Building CXX object CMakeFiles/dlib.dir/stack_trace.cpp.o [ 78%] Building CXX object CMakeFiles/dlib.dir/cuda/cpu_dlib.cpp.o [ 80%] Building CXX object CMakeFiles/dlib.dir/cuda/tensor_tools.cpp.o [ 82%] Building CXX object CMakeFiles/dlib.dir/data_io/image_dataset_metadata.cpp.o [ 84%] Building CXX object CMakeFiles/dlib.dir/data_io/mnist.cpp.o [ 86%] Building CXX object CMakeFiles/dlib.dir/global_optimization/global_function_search.cpp.o [ 88%] Building CXX object CMakeFiles/dlib.dir/filtering/kalman_filter.cpp.o [ 90%] Building CXX object CMakeFiles/dlib.dir/svm/auto.cpp.o [ 92%] Building CXX object CMakeFiles/dlib.dir/image_loader/png_loader.cpp.o [ 94%] Building CXX object CMakeFiles/dlib.dir/image_saver/save_png.cpp.o [ 96%] Building CXX object CMakeFiles/dlib.dir/image_loader/jpeg_loader.cpp.o [ 98%] Building CXX object CMakeFiles/dlib.dir/image_saver/save_jpeg.cpp.o [100%] Linking CXX static library libdlib.a [100%] Built target dlib dlib/19.21: Package 'e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa' built dlib/19.21: Build folder /home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/build/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa dlib/19.21: Generated conaninfo.txt dlib/19.21: Generated conanbuildinfo.txt dlib/19.21: Generating the package dlib/19.21: Package folder /home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/package/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa dlib/19.21: Calling package() dlib/19.21: CMake command: cmake --install "/home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/build/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa" --prefix "/home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/package/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa" ----Running------ > cmake --install "/home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/build/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa" --prefix "/home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/package/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa" ----------------- -- Install configuration: "Release" -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/package/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa/lib/libdlib.a -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/package/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa/include/dlib/config.h -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/package/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa/include/dlib/revision.h -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/package/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa/lib/cmake/dlib/dlib.cmake -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/package/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa/lib/cmake/dlib/dlib-release.cmake -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/package/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa/lib/cmake/dlib/dlibConfig.cmake -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/package/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa/lib/cmake/dlib/dlibConfigVersion.cmake -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/package/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa/lib/pkgconfig/dlib-1.pc [HOOK - conan-center.py] post_package(): [DEFAULT PACKAGE LAYOUT (KB-H013)] OK [HOOK - conan-center.py] post_package(): [MATCHING CONFIGURATION (KB-H014)] OK [HOOK - conan-center.py] post_package(): [SHARED ARTIFACTS (KB-H015)] OK [HOOK - conan-center.py] post_package(): [STATIC ARTIFACTS (KB-H074)] OK [HOOK - conan-center.py] post_package(): [EITHER STATIC OR SHARED OF EACH LIB (KB-H076)] OK [HOOK - conan-center.py] post_package(): [PC-FILES (KB-H020)] OK [HOOK - conan-center.py] post_package(): [CMAKE-MODULES-CONFIG-FILES (KB-H016)] OK [HOOK - conan-center.py] post_package(): [PDB FILES NOT ALLOWED (KB-H017)] OK [HOOK - conan-center.py] post_package(): [LIBTOOL FILES PRESENCE (KB-H018)] OK [HOOK - conan-center.py] post_package(): [MS RUNTIME FILES (KB-H021)] OK [HOOK - conan-center.py] post_package(): [SHORT_PATHS USAGE (KB-H066)] OK [HOOK - conan-center.py] post_package(): [MISSING SYSTEM LIBS (KB-H043)] OK [HOOK - conan-center.py] post_package(): [APPLE RELOCATABLE SHARED LIBS (KB-H077)] OK In file included from /home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/build/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa/dlib/filtering/../matrix.h:11, from /home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/build/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa/dlib/filtering/kalman_filter.h:7, from /home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/build/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa/dlib/filtering/kalman_filter.cpp:6: /home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/build/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa/dlib/filtering/../matrix/matrix_la.h: In function 'long int dlib::svd4(dlib::svd_u_mode, bool, const dlib::matrix_exp&, dlib::matrix&, dlib::matrix&, dlib::matrix&) [with EXP = dlib::matrix_op, dlib::row_major_layout> > > > >; long int qN = 1; long int qX = 1; long int uM = 1; long int uN = 1; long int vM = 2; long int vN = 1; MM1 = dlib::memory_manager_stateless_kernel_1; MM2 = dlib::memory_manager_stateless_kernel_1; MM3 = dlib::memory_manager_stateless_kernel_1; L1 = dlib::row_major_layout]': /home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/build/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa/dlib/filtering/../matrix/matrix_la.h:225:32: warning: iteration 1 invokes undefined behavior [-Waggressive-loop-optimizations] 225 | y = abs(q(i)) + abs(e(i)); | ~~~^~~~~~ /home/conan/w/prod/BuildSingleReference/.conan/data/dlib/19.21/_/_/build/e5a610015b638d6bdd78c77cd4d8c4c1a44e6caa/dlib/filtering/../matrix/matrix_la.h:163:20: note: within this loop 163 | for (i=0; i