Performing C SOURCE FILE Test CMAKE_HAVE_LIBC_PTHREAD failed with the following output: Change Dir: /home/buildroot/autobuild/run/instance-1/output-1/build/libcpprestsdk-2.10.14/Release/CMakeFiles/CMakeTmp Run Build Command(s):/usr/bin/make cmTC_cb774/fast && make[1]: Entering directory `/home/buildroot/autobuild/run/instance-1/output-1/build/libcpprestsdk-2.10.14/Release/CMakeFiles/CMakeTmp' /usr/bin/make -f CMakeFiles/cmTC_cb774.dir/build.make CMakeFiles/cmTC_cb774.dir/build make[2]: Entering directory `/home/buildroot/autobuild/run/instance-1/output-1/build/libcpprestsdk-2.10.14/Release/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_cb774.dir/src.c.o /home/buildroot/autobuild/run/instance-1/output-1/host/bin/aarch64_be-linux-gnu-gcc --sysroot=/home/buildroot/autobuild/run/instance-1/output-1/host/aarch64_be-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -g2 -DCMAKE_HAVE_LIBC_PTHREAD -o CMakeFiles/cmTC_cb774.dir/src.c.o -c /home/buildroot/autobuild/run/instance-1/output-1/build/libcpprestsdk-2.10.14/Release/CMakeFiles/CMakeTmp/src.c Linking C executable cmTC_cb774 /home/buildroot/autobuild/run/instance-1/output-1/host/bin/cmake -E cmake_link_script CMakeFiles/cmTC_cb774.dir/link.txt --verbose=1 /home/buildroot/autobuild/run/instance-1/output-1/host/bin/aarch64_be-linux-gnu-gcc --sysroot=/home/buildroot/autobuild/run/instance-1/output-1/host/aarch64_be-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -g2 -DCMAKE_HAVE_LIBC_PTHREAD CMakeFiles/cmTC_cb774.dir/src.c.o -o cmTC_cb774 CMakeFiles/cmTC_cb774.dir/src.c.o: In function `main': /home/buildroot/autobuild/run/instance-1/output-1/build/libcpprestsdk-2.10.14/Release/CMakeFiles/CMakeTmp/src.c:11: undefined reference to `pthread_create' /home/buildroot/autobuild/run/instance-1/output-1/build/libcpprestsdk-2.10.14/Release/CMakeFiles/CMakeTmp/src.c:12: undefined reference to `pthread_detach' /home/buildroot/autobuild/run/instance-1/output-1/build/libcpprestsdk-2.10.14/Release/CMakeFiles/CMakeTmp/src.c:13: undefined reference to `pthread_join' /home/buildroot/autobuild/run/instance-1/output-1/build/libcpprestsdk-2.10.14/Release/CMakeFiles/CMakeTmp/src.c:14: undefined reference to `pthread_atfork' collect2: error: ld returned 1 exit status make[2]: *** [cmTC_cb774] Error 1 make[2]: Leaving directory `/home/buildroot/autobuild/run/instance-1/output-1/build/libcpprestsdk-2.10.14/Release/CMakeFiles/CMakeTmp' make[1]: *** [cmTC_cb774/fast] Error 2 make[1]: Leaving directory `/home/buildroot/autobuild/run/instance-1/output-1/build/libcpprestsdk-2.10.14/Release/CMakeFiles/CMakeTmp' Source file was: #include void* test_func(void* data) { return data; } int main(void) { pthread_t thread; pthread_create(&thread, NULL, test_func, NULL); pthread_detach(thread); pthread_join(thread, NULL); pthread_atfork(NULL, NULL, NULL); pthread_exit(NULL); return 0; } Determining if the function pthread_create exists in the pthreads failed with the following output: Change Dir: /home/buildroot/autobuild/run/instance-1/output-1/build/libcpprestsdk-2.10.14/Release/CMakeFiles/CMakeTmp Run Build Command(s):/usr/bin/make cmTC_6186e/fast && make[1]: Entering directory `/home/buildroot/autobuild/run/instance-1/output-1/build/libcpprestsdk-2.10.14/Release/CMakeFiles/CMakeTmp' /usr/bin/make -f CMakeFiles/cmTC_6186e.dir/build.make CMakeFiles/cmTC_6186e.dir/build make[2]: Entering directory `/home/buildroot/autobuild/run/instance-1/output-1/build/libcpprestsdk-2.10.14/Release/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_6186e.dir/CheckFunctionExists.c.o /home/buildroot/autobuild/run/instance-1/output-1/host/bin/aarch64_be-linux-gnu-gcc --sysroot=/home/buildroot/autobuild/run/instance-1/output-1/host/aarch64_be-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -g2 -DCHECK_FUNCTION_EXISTS=pthread_create -o CMakeFiles/cmTC_6186e.dir/CheckFunctionExists.c.o -c /home/buildroot/autobuild/run/instance-1/output-1/host/share/cmake-3.15/Modules/CheckFunctionExists.c Linking C executable cmTC_6186e /home/buildroot/autobuild/run/instance-1/output-1/host/bin/cmake -E cmake_link_script CMakeFiles/cmTC_6186e.dir/link.txt --verbose=1 /home/buildroot/autobuild/run/instance-1/output-1/host/bin/aarch64_be-linux-gnu-gcc --sysroot=/home/buildroot/autobuild/run/instance-1/output-1/host/aarch64_be-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -g2 -DCHECK_FUNCTION_EXISTS=pthread_create CMakeFiles/cmTC_6186e.dir/CheckFunctionExists.c.o -o cmTC_6186e -lpthreads /home/buildroot/autobuild/run/instance-1/output-1/host/opt/ext-toolchain/bin/../lib/gcc/aarch64_be-linux-gnu/7.3.1/../../../../aarch64_be-linux-gnu/bin/ld: cannot find -lpthreads collect2: error: ld returned 1 exit status make[2]: *** [cmTC_6186e] Error 1 make[2]: Leaving directory `/home/buildroot/autobuild/run/instance-1/output-1/build/libcpprestsdk-2.10.14/Release/CMakeFiles/CMakeTmp' make[1]: *** [cmTC_6186e/fast] Error 2 make[1]: Leaving directory `/home/buildroot/autobuild/run/instance-1/output-1/build/libcpprestsdk-2.10.14/Release/CMakeFiles/CMakeTmp' Performing C++ SOURCE FILE Test _SSL_LEAK_SUPPRESS_AVAILABLE failed with the following output: Change Dir: /home/buildroot/autobuild/run/instance-1/output-1/build/libcpprestsdk-2.10.14/Release/CMakeFiles/CMakeTmp Run Build Command(s):/usr/bin/make cmTC_25e5f/fast && make[1]: Entering directory `/home/buildroot/autobuild/run/instance-1/output-1/build/libcpprestsdk-2.10.14/Release/CMakeFiles/CMakeTmp' /usr/bin/make -f CMakeFiles/cmTC_25e5f.dir/build.make CMakeFiles/cmTC_25e5f.dir/build make[2]: Entering directory `/home/buildroot/autobuild/run/instance-1/output-1/build/libcpprestsdk-2.10.14/Release/CMakeFiles/CMakeTmp' Building CXX object CMakeFiles/cmTC_25e5f.dir/src.cxx.o /home/buildroot/autobuild/run/instance-1/output-1/host/bin/aarch64_be-linux-gnu-g++ --sysroot=/home/buildroot/autobuild/run/instance-1/output-1/host/aarch64_be-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -g2 -latomic -std=c++11 -fno-strict-aliasing -D_SSL_LEAK_SUPPRESS_AVAILABLE -o CMakeFiles/cmTC_25e5f.dir/src.cxx.o -c /home/buildroot/autobuild/run/instance-1/output-1/build/libcpprestsdk-2.10.14/Release/CMakeFiles/CMakeTmp/src.cxx In file included from /home/buildroot/autobuild/run/instance-1/output-1/build/libcpprestsdk-2.10.14/Release/CMakeFiles/CMakeTmp/src.cxx:2:0: /home/buildroot/autobuild/run/instance-1/output-1/build/libcpprestsdk-2.10.14/Release/CMakeFiles/CMakeTmp/src.cxx: In function 'int main()': /home/buildroot/autobuild/run/instance-1/output-1/build/libcpprestsdk-2.10.14/Release/CMakeFiles/CMakeTmp/src.cxx:5:9: error: expected id-expression before 'while' ::SSL_COMP_free_compression_methods(); ^ make[2]: *** [CMakeFiles/cmTC_25e5f.dir/src.cxx.o] Error 1 make[2]: Leaving directory `/home/buildroot/autobuild/run/instance-1/output-1/build/libcpprestsdk-2.10.14/Release/CMakeFiles/CMakeTmp' make[1]: *** [cmTC_25e5f/fast] Error 2 make[1]: Leaving directory `/home/buildroot/autobuild/run/instance-1/output-1/build/libcpprestsdk-2.10.14/Release/CMakeFiles/CMakeTmp' Source file was: #include int main() { ::SSL_COMP_free_compression_methods(); }