Determining if the include file pthread.h exists failed with the following output: Change Dir: /tmp/instance-0/output-1/build/minizip-2.10.0/CMakeFiles/CMakeTmp Run Build Command(s):/usr/bin/make cmTC_30a18/fast && make[1]: Entering directory '/tmp/instance-0/output-1/build/minizip-2.10.0/CMakeFiles/CMakeTmp' /usr/bin/make -f CMakeFiles/cmTC_30a18.dir/build.make CMakeFiles/cmTC_30a18.dir/build make[2]: Entering directory '/tmp/instance-0/output-1/build/minizip-2.10.0/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_30a18.dir/CheckIncludeFile.c.o /tmp/instance-0/output-1/host/bin/arm-linux-gcc --sysroot=/tmp/instance-0/output-1/host/arm-buildroot-linux-uclibcgnueabihf/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -std=c99 -Wall -Wextra -Wundef -Wshadow -Wcast-align -Wcast-qual -Wstrict-prototypes -DNDEBUG -o CMakeFiles/cmTC_30a18.dir/CheckIncludeFile.c.o -c /tmp/instance-0/output-1/build/minizip-2.10.0/CMakeFiles/CMakeTmp/CheckIncludeFile.c /tmp/instance-0/output-1/build/minizip-2.10.0/CMakeFiles/CMakeTmp/CheckIncludeFile.c:1:10: fatal error: pthread.h: No such file or directory #include ^~~~~~~~~~~ compilation terminated. make[2]: *** [CMakeFiles/cmTC_30a18.dir/build.make:66: CMakeFiles/cmTC_30a18.dir/CheckIncludeFile.c.o] Error 1 make[2]: Leaving directory '/tmp/instance-0/output-1/build/minizip-2.10.0/CMakeFiles/CMakeTmp' make[1]: *** [Makefile:121: cmTC_30a18/fast] Error 2 make[1]: Leaving directory '/tmp/instance-0/output-1/build/minizip-2.10.0/CMakeFiles/CMakeTmp'