Compiling the CXX compiler identification source file "CMakeCXXCompilerId.cpp" failed. Compiler: /home/buildroot/autobuild/instance-3/output-1/host/bin/clang++ Build flags: Id flags: The output was: 1 clang-9: warning: unknown platform, assuming -mfloat-abi=soft clang-9: warning: unknown platform, assuming -mfloat-abi=soft clang-9: warning: unknown platform, assuming -mfloat-abi=soft /home/buildroot/autobuild/instance-3/output-1/host/bin/arm-linux-ld: warning: library search path "/lib/../lib" is unsafe for cross-compilation /home/buildroot/autobuild/instance-3/output-1/host/bin/arm-linux-ld: warning: library search path "/usr/lib/../lib" is unsafe for cross-compilation /home/buildroot/autobuild/instance-3/output-1/host/bin/arm-linux-ld: warning: library search path "/lib" is unsafe for cross-compilation /home/buildroot/autobuild/instance-3/output-1/host/bin/arm-linux-ld: warning: library search path "/usr/lib" is unsafe for cross-compilation /home/buildroot/autobuild/instance-3/output-1/host/bin/arm-linux-ld: cannot find crt1.o: No such file or directory /home/buildroot/autobuild/instance-3/output-1/host/bin/arm-linux-ld: cannot find crti.o: No such file or directory /home/buildroot/autobuild/instance-3/output-1/host/bin/arm-linux-ld: cannot find crtbegin.o: No such file or directory /home/buildroot/autobuild/instance-3/output-1/host/bin/arm-linux-ld: cannot find -lstdc++ /home/buildroot/autobuild/instance-3/output-1/host/bin/arm-linux-ld: cannot find -lgcc clang-9: error: linker command failed with exit code 1 (use -v to see invocation) Detecting CXX compiler ABI info failed to compile with the following output: Change Dir: /home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeTmp Run Build Command(s):/usr/bin/make cmTC_b0339/fast && make[1]: Entering directory '/home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeTmp' /usr/bin/make -f CMakeFiles/cmTC_b0339.dir/build.make CMakeFiles/cmTC_b0339.dir/build make[2]: Entering directory '/home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeTmp' Building CXX object CMakeFiles/cmTC_b0339.dir/CMakeCXXCompilerABI.cpp.o /home/buildroot/autobuild/instance-3/output-1/host/bin/clang++ --sysroot=/home/buildroot/autobuild/instance-3/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot -O3 -DNDEBUG -v -o CMakeFiles/cmTC_b0339.dir/CMakeCXXCompilerABI.cpp.o -c /home/buildroot/autobuild/instance-3/output-1/host/share/cmake-3.18/Modules/CMakeCXXCompilerABI.cpp clang version 9.0.1 Target: arm-buildroot-linux-uclibcgnueabi Thread model: posix InstalledDir: /home/buildroot/autobuild/instance-3/output-1/host/bin clang-9: warning: unknown platform, assuming -mfloat-abi=soft clang-9: warning: unknown platform, assuming -mfloat-abi=soft "/home/buildroot/autobuild/instance-3/output-1/host/bin/clang-9" -cc1 -triple armv4t-buildroot-linux-uclibcgnueabi -emit-obj -disable-free -disable-llvm-verifier -discard-value-names -main-file-name CMakeCXXCompilerABI.cpp -mrelocation-model static -mthread-model posix -mdisable-fp-elim -fmath-errno -masm-verbose -mconstructor-aliases -fuse-init-array -target-cpu arm7tdmi -target-feature +soft-float -target-feature +soft-float-abi -target-feature -fp16 -target-feature -vfp2 -target-feature -vfp2sp -target-feature -vfp2d16 -target-feature -vfp2d16sp -target-feature -vfp3 -target-feature -vfp3sp -target-feature -vfp3d16 -target-feature -vfp3d16sp -target-feature -vfp4 -target-feature -vfp4sp -target-feature -vfp4d16 -target-feature -vfp4d16sp -target-feature -fp-armv8 -target-feature -fp-armv8sp -target-feature -fp-armv8d16 -target-feature -fp-armv8d16sp -target-feature -fullfp16 -target-feature -neon -target-feature -crypto -target-feature -dotprod -target-feature -fp16fml -target-feature -fp64 -target-feature -d32 -target-feature -fpregs -target-feature +strict-align -target-abi aapcs -msoft-float -mfloat-abi soft -fallow-half-arguments-and-returns -dwarf-column-info -debugger-tuning=gdb -v -coverage-notes-file /home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeTmp/CMakeFiles/cmTC_b0339.dir/CMakeCXXCompilerABI.cpp.gcno -resource-dir /home/buildroot/autobuild/instance-3/output-1/host/lib/clang/9.0.1 -D NDEBUG -isysroot /home/buildroot/autobuild/instance-3/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot -internal-isystem /home/buildroot/autobuild/instance-3/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/local/include -internal-isystem /home/buildroot/autobuild/instance-3/output-1/host/lib/clang/9.0.1/include -internal-externc-isystem /home/buildroot/autobuild/instance-3/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/include -internal-externc-isystem /home/buildroot/autobuild/instance-3/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/include -O3 -fdeprecated-macro -fdebug-compilation-dir /home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeTmp -ferror-limit 19 -fmessage-length 0 -fno-signed-char -fobjc-runtime=gcc -fcxx-exceptions -fexceptions -fdiagnostics-show-option -vectorize-loops -vectorize-slp -faddrsig -o CMakeFiles/cmTC_b0339.dir/CMakeCXXCompilerABI.cpp.o -x c++ /home/buildroot/autobuild/instance-3/output-1/host/share/cmake-3.18/Modules/CMakeCXXCompilerABI.cpp clang -cc1 version 9.0.1 based upon LLVM 9.0.1 default target arm-buildroot-linux-uclibcgnueabi ignoring nonexistent directory "/home/buildroot/autobuild/instance-3/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/local/include" #include "..." search starts here: #include <...> search starts here: /home/buildroot/autobuild/instance-3/output-1/host/lib/clang/9.0.1/include /home/buildroot/autobuild/instance-3/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/include /home/buildroot/autobuild/instance-3/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/include End of search list. Linking CXX executable cmTC_b0339 /home/buildroot/autobuild/instance-3/output-1/host/bin/cmake -E cmake_link_script CMakeFiles/cmTC_b0339.dir/link.txt --verbose=1 /home/buildroot/autobuild/instance-3/output-1/host/bin/clang++ --sysroot=/home/buildroot/autobuild/instance-3/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot -O3 -DNDEBUG -v CMakeFiles/cmTC_b0339.dir/CMakeCXXCompilerABI.cpp.o -o cmTC_b0339 clang version 9.0.1 Target: arm-buildroot-linux-uclibcgnueabi Thread model: posix InstalledDir: /home/buildroot/autobuild/instance-3/output-1/host/bin clang-9: warning: unknown platform, assuming -mfloat-abi=soft "/home/buildroot/autobuild/instance-3/output-1/host/bin/arm-linux-ld" --sysroot=/home/buildroot/autobuild/instance-3/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot -EL -X --hash-style=both --eh-frame-hdr -m armelf_linux_eabi -dynamic-linker /lib/ld-linux.so.3 -o cmTC_b0339 /home/buildroot/autobuild/instance-3/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/lib/../lib/crt1.o /home/buildroot/autobuild/instance-3/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/lib/../lib/crti.o crtbegin.o -L/home/buildroot/autobuild/instance-3/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/lib/../lib -L/home/buildroot/autobuild/instance-3/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/lib/../lib -L/home/buildroot/autobuild/instance-3/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/lib -L/home/buildroot/autobuild/instance-3/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/lib CMakeFiles/cmTC_b0339.dir/CMakeCXXCompilerABI.cpp.o -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc crtend.o /home/buildroot/autobuild/instance-3/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/lib/../lib/crtn.o /home/buildroot/autobuild/instance-3/output-1/host/bin/arm-linux-ld: cannot find crtbegin.o: No such file or directory /home/buildroot/autobuild/instance-3/output-1/host/bin/arm-linux-ld: cannot find -lstdc++ /home/buildroot/autobuild/instance-3/output-1/host/bin/arm-linux-ld: cannot find -lgcc clang-9: error: linker command failed with exit code 1 (use -v to see invocation) CMakeFiles/cmTC_b0339.dir/build.make:105: recipe for target 'cmTC_b0339' failed make[2]: *** [cmTC_b0339] Error 1 make[2]: Leaving directory '/home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeTmp' Makefile:140: recipe for target 'cmTC_b0339/fast' failed make[1]: *** [cmTC_b0339/fast] Error 2 make[1]: Leaving directory '/home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeTmp' Determining if the CXX compiler works failed with the following output: Change Dir: /home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeTmp Run Build Command(s):/usr/bin/make cmTC_bea21/fast && make[1]: Entering directory '/home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeTmp' /usr/bin/make -f CMakeFiles/cmTC_bea21.dir/build.make CMakeFiles/cmTC_bea21.dir/build make[2]: Entering directory '/home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeTmp' Building CXX object CMakeFiles/cmTC_bea21.dir/testCXXCompiler.cxx.o /home/buildroot/autobuild/instance-3/output-1/host/bin/clang++ --sysroot=/home/buildroot/autobuild/instance-3/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot -O3 -DNDEBUG -o CMakeFiles/cmTC_bea21.dir/testCXXCompiler.cxx.o -c /home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeTmp/testCXXCompiler.cxx clang-9: warning: unknown platform, assuming -mfloat-abi=soft clang-9: warning: unknown platform, assuming -mfloat-abi=soft Linking CXX executable cmTC_bea21 /home/buildroot/autobuild/instance-3/output-1/host/bin/cmake -E cmake_link_script CMakeFiles/cmTC_bea21.dir/link.txt --verbose=1 /home/buildroot/autobuild/instance-3/output-1/host/bin/clang++ --sysroot=/home/buildroot/autobuild/instance-3/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot -O3 -DNDEBUG CMakeFiles/cmTC_bea21.dir/testCXXCompiler.cxx.o -o cmTC_bea21 clang-9: warning: unknown platform, assuming -mfloat-abi=soft /home/buildroot/autobuild/instance-3/output-1/host/bin/arm-linux-ld: cannot find crtbegin.o: No such file or directory /home/buildroot/autobuild/instance-3/output-1/host/bin/arm-linux-ld: cannot find -lstdc++ /home/buildroot/autobuild/instance-3/output-1/host/bin/arm-linux-ld: cannot find -lgcc clang-9: error: linker command failed with exit code 1 (use -v to see invocation) CMakeFiles/cmTC_bea21.dir/build.make:105: recipe for target 'cmTC_bea21' failed make[2]: *** [cmTC_bea21] Error 1 make[2]: Leaving directory '/home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeTmp' Makefile:140: recipe for target 'cmTC_bea21/fast' failed make[1]: *** [cmTC_bea21/fast] Error 2 make[1]: Leaving directory '/home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeTmp'