Performing C SOURCE FILE Test CMAKE_HAVE_LIBC_PTHREAD failed with the following output: Change Dir: /home/buildroot/autobuild/run/instance-0/output-1/build/host-doxygen-1.8.17/CMakeFiles/CMakeTmp Run Build Command(s):/usr/bin/make cmTC_db021/fast && make[1]: Entering directory `/home/buildroot/autobuild/run/instance-0/output-1/build/host-doxygen-1.8.17/CMakeFiles/CMakeTmp' /usr/bin/make -f CMakeFiles/cmTC_db021.dir/build.make CMakeFiles/cmTC_db021.dir/build make[2]: Entering directory `/home/buildroot/autobuild/run/instance-0/output-1/build/host-doxygen-1.8.17/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_db021.dir/src.c.o /usr/bin/gcc -O2 -I/home/buildroot/autobuild/run/instance-0/output-1/host/include -DCMAKE_HAVE_LIBC_PTHREAD -o CMakeFiles/cmTC_db021.dir/src.c.o -c /home/buildroot/autobuild/run/instance-0/output-1/build/host-doxygen-1.8.17/CMakeFiles/CMakeTmp/src.c Linking C executable cmTC_db021 /home/buildroot/autobuild/run/instance-0/output-1/host/bin/cmake -E cmake_link_script CMakeFiles/cmTC_db021.dir/link.txt --verbose=1 /usr/bin/gcc -O2 -I/home/buildroot/autobuild/run/instance-0/output-1/host/include -DCMAKE_HAVE_LIBC_PTHREAD -L/home/buildroot/autobuild/run/instance-0/output-1/host/lib -Wl,-rpath,/home/buildroot/autobuild/run/instance-0/output-1/host/lib -rdynamic CMakeFiles/cmTC_db021.dir/src.c.o -o cmTC_db021 CMakeFiles/cmTC_db021.dir/src.c.o: In function `main': src.c:(.text.startup+0x13): undefined reference to `pthread_create' src.c:(.text.startup+0x1d): undefined reference to `pthread_detach' src.c:(.text.startup+0x29): undefined reference to `pthread_join' src.c:(.text.startup+0x34): undefined reference to `pthread_atfork' collect2: error: ld returned 1 exit status make[2]: *** [cmTC_db021] Error 1 make[2]: Leaving directory `/home/buildroot/autobuild/run/instance-0/output-1/build/host-doxygen-1.8.17/CMakeFiles/CMakeTmp' make[1]: *** [cmTC_db021/fast] Error 2 make[1]: Leaving directory `/home/buildroot/autobuild/run/instance-0/output-1/build/host-doxygen-1.8.17/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-0/output-1/build/host-doxygen-1.8.17/CMakeFiles/CMakeTmp Run Build Command(s):/usr/bin/make cmTC_eade6/fast && make[1]: Entering directory `/home/buildroot/autobuild/run/instance-0/output-1/build/host-doxygen-1.8.17/CMakeFiles/CMakeTmp' /usr/bin/make -f CMakeFiles/cmTC_eade6.dir/build.make CMakeFiles/cmTC_eade6.dir/build make[2]: Entering directory `/home/buildroot/autobuild/run/instance-0/output-1/build/host-doxygen-1.8.17/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_eade6.dir/CheckFunctionExists.c.o /usr/bin/gcc -O2 -I/home/buildroot/autobuild/run/instance-0/output-1/host/include -DCHECK_FUNCTION_EXISTS=pthread_create -o CMakeFiles/cmTC_eade6.dir/CheckFunctionExists.c.o -c /home/buildroot/autobuild/run/instance-0/output-1/host/share/cmake-3.15/Modules/CheckFunctionExists.c Linking C executable cmTC_eade6 /home/buildroot/autobuild/run/instance-0/output-1/host/bin/cmake -E cmake_link_script CMakeFiles/cmTC_eade6.dir/link.txt --verbose=1 /usr/bin/gcc -O2 -I/home/buildroot/autobuild/run/instance-0/output-1/host/include -DCHECK_FUNCTION_EXISTS=pthread_create -L/home/buildroot/autobuild/run/instance-0/output-1/host/lib -Wl,-rpath,/home/buildroot/autobuild/run/instance-0/output-1/host/lib -rdynamic CMakeFiles/cmTC_eade6.dir/CheckFunctionExists.c.o -o cmTC_eade6 -lpthreads /usr/bin/ld: cannot find -lpthreads collect2: error: ld returned 1 exit status make[2]: *** [cmTC_eade6] Error 1 make[2]: Leaving directory `/home/buildroot/autobuild/run/instance-0/output-1/build/host-doxygen-1.8.17/CMakeFiles/CMakeTmp' make[1]: *** [cmTC_eade6/fast] Error 2 make[1]: Leaving directory `/home/buildroot/autobuild/run/instance-0/output-1/build/host-doxygen-1.8.17/CMakeFiles/CMakeTmp' Performing C++ SOURCE FILE Test ICONV_ACCEPTS_CONST_INPUT failed with the following output: Change Dir: /home/buildroot/autobuild/run/instance-0/output-1/build/host-doxygen-1.8.17/CMakeFiles/CMakeTmp Run Build Command(s):/usr/bin/make cmTC_21ebe/fast && make[1]: Entering directory `/home/buildroot/autobuild/run/instance-0/output-1/build/host-doxygen-1.8.17/CMakeFiles/CMakeTmp' /usr/bin/make -f CMakeFiles/cmTC_21ebe.dir/build.make CMakeFiles/cmTC_21ebe.dir/build make[2]: Entering directory `/home/buildroot/autobuild/run/instance-0/output-1/build/host-doxygen-1.8.17/CMakeFiles/CMakeTmp' Building CXX object CMakeFiles/cmTC_21ebe.dir/src.cxx.o /usr/bin/g++ -O2 -I/home/buildroot/autobuild/run/instance-0/output-1/host/include -DICONV_ACCEPTS_CONST_INPUT -o CMakeFiles/cmTC_21ebe.dir/src.cxx.o -c /home/buildroot/autobuild/run/instance-0/output-1/build/host-doxygen-1.8.17/CMakeFiles/CMakeTmp/src.cxx /home/buildroot/autobuild/run/instance-0/output-1/build/host-doxygen-1.8.17/CMakeFiles/CMakeTmp/src.cxx: In function 'int main()': /home/buildroot/autobuild/run/instance-0/output-1/build/host-doxygen-1.8.17/CMakeFiles/CMakeTmp/src.cxx:4:43: error: invalid conversion from 'const char**' to 'char**' [-fpermissive] iconv(iconv_t(-1), &p, 0, 0, 0); ^ In file included from /home/buildroot/autobuild/run/instance-0/output-1/build/host-doxygen-1.8.17/CMakeFiles/CMakeTmp/src.cxx:1:0: /usr/include/iconv.h:42:15: error: initializing argument 2 of 'size_t iconv(iconv_t, char**, size_t*, char**, size_t*)' [-fpermissive] extern size_t iconv (iconv_t __cd, char **__restrict __inbuf, ^ make[2]: *** [CMakeFiles/cmTC_21ebe.dir/src.cxx.o] Error 1 make[2]: Leaving directory `/home/buildroot/autobuild/run/instance-0/output-1/build/host-doxygen-1.8.17/CMakeFiles/CMakeTmp' make[1]: *** [cmTC_21ebe/fast] Error 2 make[1]: Leaving directory `/home/buildroot/autobuild/run/instance-0/output-1/build/host-doxygen-1.8.17/CMakeFiles/CMakeTmp' Source file was: #include int main() { char const *p = 0; iconv(iconv_t(-1), &p, 0, 0, 0); }