Performing C SOURCE FILE Test CMAKE_HAVE_LIBC_PTHREAD failed with the following output: Change Dir: /tmp/instance-0/output-1/build/libcpprestsdk-2.10.16/Release/CMakeFiles/CMakeTmp Run Build Command(s):/usr/bin/make cmTC_0bcdd/fast && make[1]: Entering directory '/tmp/instance-0/output-1/build/libcpprestsdk-2.10.16/Release/CMakeFiles/CMakeTmp' /usr/bin/make -f CMakeFiles/cmTC_0bcdd.dir/build.make CMakeFiles/cmTC_0bcdd.dir/build make[2]: Entering directory '/tmp/instance-0/output-1/build/libcpprestsdk-2.10.16/Release/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_0bcdd.dir/src.c.o /tmp/instance-0/output-1/host/bin/aarch64-linux-gnu-gcc --sysroot=/tmp/instance-0/output-1/host/aarch64-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -D_FORTIFY_SOURCE=2 -DCMAKE_HAVE_LIBC_PTHREAD -DNDEBUG -o CMakeFiles/cmTC_0bcdd.dir/src.c.o -c /tmp/instance-0/output-1/build/libcpprestsdk-2.10.16/Release/CMakeFiles/CMakeTmp/src.c Linking C executable cmTC_0bcdd /usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_0bcdd.dir/link.txt --verbose=1 /tmp/instance-0/output-1/host/bin/aarch64-linux-gnu-gcc --sysroot=/tmp/instance-0/output-1/host/aarch64-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -D_FORTIFY_SOURCE=2 -DCMAKE_HAVE_LIBC_PTHREAD -DNDEBUG CMakeFiles/cmTC_0bcdd.dir/src.c.o -o cmTC_0bcdd CMakeFiles/cmTC_0bcdd.dir/src.c.o: In function `main': src.c:(.text.startup+0x1c): undefined reference to `pthread_create' src.c:(.text.startup+0x24): undefined reference to `pthread_detach' src.c:(.text.startup+0x30): undefined reference to `pthread_join' src.c:(.text.startup+0x40): undefined reference to `pthread_atfork' collect2: error: ld returned 1 exit status make[2]: *** [CMakeFiles/cmTC_0bcdd.dir/build.make:87: cmTC_0bcdd] Error 1 make[2]: Leaving directory '/tmp/instance-0/output-1/build/libcpprestsdk-2.10.16/Release/CMakeFiles/CMakeTmp' make[1]: *** [Makefile:121: cmTC_0bcdd/fast] Error 2 make[1]: Leaving directory '/tmp/instance-0/output-1/build/libcpprestsdk-2.10.16/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: /tmp/instance-0/output-1/build/libcpprestsdk-2.10.16/Release/CMakeFiles/CMakeTmp Run Build Command(s):/usr/bin/make cmTC_92c53/fast && make[1]: Entering directory '/tmp/instance-0/output-1/build/libcpprestsdk-2.10.16/Release/CMakeFiles/CMakeTmp' /usr/bin/make -f CMakeFiles/cmTC_92c53.dir/build.make CMakeFiles/cmTC_92c53.dir/build make[2]: Entering directory '/tmp/instance-0/output-1/build/libcpprestsdk-2.10.16/Release/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_92c53.dir/CheckFunctionExists.c.o /tmp/instance-0/output-1/host/bin/aarch64-linux-gnu-gcc --sysroot=/tmp/instance-0/output-1/host/aarch64-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -D_FORTIFY_SOURCE=2 -DCHECK_FUNCTION_EXISTS=pthread_create -DNDEBUG -o CMakeFiles/cmTC_92c53.dir/CheckFunctionExists.c.o -c /usr/share/cmake-3.16/Modules/CheckFunctionExists.c Linking C executable cmTC_92c53 /usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_92c53.dir/link.txt --verbose=1 /tmp/instance-0/output-1/host/bin/aarch64-linux-gnu-gcc --sysroot=/tmp/instance-0/output-1/host/aarch64-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -D_FORTIFY_SOURCE=2 -DCHECK_FUNCTION_EXISTS=pthread_create -DNDEBUG CMakeFiles/cmTC_92c53.dir/CheckFunctionExists.c.o -o cmTC_92c53 -lpthreads /tmp/instance-0/output-1/host/opt/ext-toolchain/bin/../lib/gcc/aarch64-linux-gnu/7.3.1/../../../../aarch64-linux-gnu/bin/ld: cannot find -lpthreads collect2: error: ld returned 1 exit status make[2]: *** [CMakeFiles/cmTC_92c53.dir/build.make:87: cmTC_92c53] Error 1 make[2]: Leaving directory '/tmp/instance-0/output-1/build/libcpprestsdk-2.10.16/Release/CMakeFiles/CMakeTmp' make[1]: *** [Makefile:121: cmTC_92c53/fast] Error 2 make[1]: Leaving directory '/tmp/instance-0/output-1/build/libcpprestsdk-2.10.16/Release/CMakeFiles/CMakeTmp' Performing C++ SOURCE FILE Test _SSL_LEAK_SUPPRESS_AVAILABLE failed with the following output: Change Dir: /tmp/instance-0/output-1/build/libcpprestsdk-2.10.16/Release/CMakeFiles/CMakeTmp Run Build Command(s):/usr/bin/make cmTC_003d9/fast && make[1]: Entering directory '/tmp/instance-0/output-1/build/libcpprestsdk-2.10.16/Release/CMakeFiles/CMakeTmp' /usr/bin/make -f CMakeFiles/cmTC_003d9.dir/build.make CMakeFiles/cmTC_003d9.dir/build make[2]: Entering directory '/tmp/instance-0/output-1/build/libcpprestsdk-2.10.16/Release/CMakeFiles/CMakeTmp' Building CXX object CMakeFiles/cmTC_003d9.dir/src.cxx.o /tmp/instance-0/output-1/host/bin/aarch64-linux-gnu-g++ --sysroot=/tmp/instance-0/output-1/host/aarch64-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -D_FORTIFY_SOURCE=2 -latomic -std=c++11 -fno-strict-aliasing -D_SSL_LEAK_SUPPRESS_AVAILABLE -DNDEBUG -o CMakeFiles/cmTC_003d9.dir/src.cxx.o -c /tmp/instance-0/output-1/build/libcpprestsdk-2.10.16/Release/CMakeFiles/CMakeTmp/src.cxx In file included from /tmp/instance-0/output-1/build/libcpprestsdk-2.10.16/Release/CMakeFiles/CMakeTmp/src.cxx:2:0: /tmp/instance-0/output-1/build/libcpprestsdk-2.10.16/Release/CMakeFiles/CMakeTmp/src.cxx: In function 'int main()': /tmp/instance-0/output-1/build/libcpprestsdk-2.10.16/Release/CMakeFiles/CMakeTmp/src.cxx:5:9: error: expected id-expression before 'while' ::SSL_COMP_free_compression_methods(); ^ make[2]: *** [CMakeFiles/cmTC_003d9.dir/build.make:66: CMakeFiles/cmTC_003d9.dir/src.cxx.o] Error 1 make[2]: Leaving directory '/tmp/instance-0/output-1/build/libcpprestsdk-2.10.16/Release/CMakeFiles/CMakeTmp' make[1]: *** [Makefile:121: cmTC_003d9/fast] Error 2 make[1]: Leaving directory '/tmp/instance-0/output-1/build/libcpprestsdk-2.10.16/Release/CMakeFiles/CMakeTmp' Source file was: #include int main() { ::SSL_COMP_free_compression_methods(); }