Performing C SOURCE FILE Test CMAKE_HAVE_LIBC_PTHREAD failed with the following output: Change Dir: /home/buildroot/autobuild/instance-2/output-1/build/exiv2-0.27.3/CMakeFiles/CMakeTmp Run Build Command(s):/usr/bin/make cmTC_bf13e/fast && make[1]: Entering directory '/home/buildroot/autobuild/instance-2/output-1/build/exiv2-0.27.3/CMakeFiles/CMakeTmp' /usr/bin/make -f CMakeFiles/cmTC_bf13e.dir/build.make CMakeFiles/cmTC_bf13e.dir/build make[2]: Entering directory '/home/buildroot/autobuild/instance-2/output-1/build/exiv2-0.27.3/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_bf13e.dir/src.c.o /home/buildroot/autobuild/instance-2/output-1/host/bin/aarch64-none-linux-gnu-gcc --sysroot=/home/buildroot/autobuild/instance-2/output-1/host/aarch64-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -DCMAKE_HAVE_LIBC_PTHREAD -DNDEBUG -o CMakeFiles/cmTC_bf13e.dir/src.c.o -c /home/buildroot/autobuild/instance-2/output-1/build/exiv2-0.27.3/CMakeFiles/CMakeTmp/src.c Linking C executable cmTC_bf13e /home/buildroot/autobuild/instance-2/output-1/host/bin/cmake -E cmake_link_script CMakeFiles/cmTC_bf13e.dir/link.txt --verbose=1 /home/buildroot/autobuild/instance-2/output-1/host/bin/aarch64-none-linux-gnu-gcc --sysroot=/home/buildroot/autobuild/instance-2/output-1/host/aarch64-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -DCMAKE_HAVE_LIBC_PTHREAD -DNDEBUG CMakeFiles/cmTC_bf13e.dir/src.c.o -o cmTC_bf13e /home/buildroot/autobuild/instance-2/output-1/host/opt/ext-toolchain/bin/../lib/gcc/aarch64-none-linux-gnu/9.2.1/../../../../aarch64-none-linux-gnu/bin/ld: CMakeFiles/cmTC_bf13e.dir/src.c.o: in function `main': src.c:(.text.startup+0x1c): undefined reference to `pthread_create' /home/buildroot/autobuild/instance-2/output-1/host/opt/ext-toolchain/bin/../lib/gcc/aarch64-none-linux-gnu/9.2.1/../../../../aarch64-none-linux-gnu/bin/ld: src.c:(.text.startup+0x24): undefined reference to `pthread_detach' /home/buildroot/autobuild/instance-2/output-1/host/opt/ext-toolchain/bin/../lib/gcc/aarch64-none-linux-gnu/9.2.1/../../../../aarch64-none-linux-gnu/bin/ld: src.c:(.text.startup+0x30): undefined reference to `pthread_join' collect2: error: ld returned 1 exit status CMakeFiles/cmTC_bf13e.dir/build.make:86: recipe for target 'cmTC_bf13e' failed make[2]: *** [cmTC_bf13e] Error 1 make[2]: Leaving directory '/home/buildroot/autobuild/instance-2/output-1/build/exiv2-0.27.3/CMakeFiles/CMakeTmp' Makefile:121: recipe for target 'cmTC_bf13e/fast' failed make[1]: *** [cmTC_bf13e/fast] Error 2 make[1]: Leaving directory '/home/buildroot/autobuild/instance-2/output-1/build/exiv2-0.27.3/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/instance-2/output-1/build/exiv2-0.27.3/CMakeFiles/CMakeTmp Run Build Command(s):/usr/bin/make cmTC_267b9/fast && make[1]: Entering directory '/home/buildroot/autobuild/instance-2/output-1/build/exiv2-0.27.3/CMakeFiles/CMakeTmp' /usr/bin/make -f CMakeFiles/cmTC_267b9.dir/build.make CMakeFiles/cmTC_267b9.dir/build make[2]: Entering directory '/home/buildroot/autobuild/instance-2/output-1/build/exiv2-0.27.3/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_267b9.dir/CheckFunctionExists.c.o /home/buildroot/autobuild/instance-2/output-1/host/bin/aarch64-none-linux-gnu-gcc --sysroot=/home/buildroot/autobuild/instance-2/output-1/host/aarch64-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -DCHECK_FUNCTION_EXISTS=pthread_create -DNDEBUG -o CMakeFiles/cmTC_267b9.dir/CheckFunctionExists.c.o -c /home/buildroot/autobuild/instance-2/output-1/host/share/cmake-3.15/Modules/CheckFunctionExists.c Linking C executable cmTC_267b9 /home/buildroot/autobuild/instance-2/output-1/host/bin/cmake -E cmake_link_script CMakeFiles/cmTC_267b9.dir/link.txt --verbose=1 /home/buildroot/autobuild/instance-2/output-1/host/bin/aarch64-none-linux-gnu-gcc --sysroot=/home/buildroot/autobuild/instance-2/output-1/host/aarch64-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -DCHECK_FUNCTION_EXISTS=pthread_create -DNDEBUG CMakeFiles/cmTC_267b9.dir/CheckFunctionExists.c.o -o cmTC_267b9 -lpthreads /home/buildroot/autobuild/instance-2/output-1/host/opt/ext-toolchain/bin/../lib/gcc/aarch64-none-linux-gnu/9.2.1/../../../../aarch64-none-linux-gnu/bin/ld: cannot find -lpthreads collect2: error: ld returned 1 exit status CMakeFiles/cmTC_267b9.dir/build.make:86: recipe for target 'cmTC_267b9' failed make[2]: *** [cmTC_267b9] Error 1 make[2]: Leaving directory '/home/buildroot/autobuild/instance-2/output-1/build/exiv2-0.27.3/CMakeFiles/CMakeTmp' Makefile:121: recipe for target 'cmTC_267b9/fast' failed make[1]: *** [cmTC_267b9/fast] Error 2 make[1]: Leaving directory '/home/buildroot/autobuild/instance-2/output-1/build/exiv2-0.27.3/CMakeFiles/CMakeTmp' Determining if the include file process.h exists failed with the following output: Change Dir: /home/buildroot/autobuild/instance-2/output-1/build/exiv2-0.27.3/CMakeFiles/CMakeTmp Run Build Command(s):/usr/bin/make cmTC_451e0/fast && make[1]: Entering directory '/home/buildroot/autobuild/instance-2/output-1/build/exiv2-0.27.3/CMakeFiles/CMakeTmp' /usr/bin/make -f CMakeFiles/cmTC_451e0.dir/build.make CMakeFiles/cmTC_451e0.dir/build make[2]: Entering directory '/home/buildroot/autobuild/instance-2/output-1/build/exiv2-0.27.3/CMakeFiles/CMakeTmp' Building CXX object CMakeFiles/cmTC_451e0.dir/CheckIncludeFile.cxx.o /home/buildroot/autobuild/instance-2/output-1/host/bin/aarch64-none-linux-gnu-g++ --sysroot=/home/buildroot/autobuild/instance-2/output-1/host/aarch64-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -DNDEBUG -o CMakeFiles/cmTC_451e0.dir/CheckIncludeFile.cxx.o -c /home/buildroot/autobuild/instance-2/output-1/build/exiv2-0.27.3/CMakeFiles/CMakeTmp/CheckIncludeFile.cxx /home/buildroot/autobuild/instance-2/output-1/build/exiv2-0.27.3/CMakeFiles/CMakeTmp/CheckIncludeFile.cxx:1:10: fatal error: process.h: No such file or directory 1 | #include | ^~~~~~~~~~~ compilation terminated. CMakeFiles/cmTC_451e0.dir/build.make:65: recipe for target 'CMakeFiles/cmTC_451e0.dir/CheckIncludeFile.cxx.o' failed make[2]: *** [CMakeFiles/cmTC_451e0.dir/CheckIncludeFile.cxx.o] Error 1 make[2]: Leaving directory '/home/buildroot/autobuild/instance-2/output-1/build/exiv2-0.27.3/CMakeFiles/CMakeTmp' Makefile:121: recipe for target 'cmTC_451e0/fast' failed make[1]: *** [cmTC_451e0/fast] Error 2 make[1]: Leaving directory '/home/buildroot/autobuild/instance-2/output-1/build/exiv2-0.27.3/CMakeFiles/CMakeTmp'