Determining if the getpassphrase exist failed with the following output: Change Dir: /home/buildroot/autobuild/run/instance-1/output-1/build/znc-1.8.2/CMakeFiles/CMakeTmp Run Build Command(s):/usr/bin/make -f Makefile cmTC_47b6e/fast && make[1]: Entering directory '/home/buildroot/autobuild/run/instance-1/output-1/build/znc-1.8.2/CMakeFiles/CMakeTmp' /usr/bin/make -f CMakeFiles/cmTC_47b6e.dir/build.make CMakeFiles/cmTC_47b6e.dir/build make[2]: Entering directory '/home/buildroot/autobuild/run/instance-1/output-1/build/znc-1.8.2/CMakeFiles/CMakeTmp' Building CXX object CMakeFiles/cmTC_47b6e.dir/CheckSymbolExists.cxx.o /home/buildroot/autobuild/run/instance-1/output-1/host/bin/m68k-linux-g++ --sysroot=/home/buildroot/autobuild/run/instance-1/output-1/host/m68k-buildroot-linux-uclibc/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -g0 -DNDEBUG -o CMakeFiles/cmTC_47b6e.dir/CheckSymbolExists.cxx.o -c /home/buildroot/autobuild/run/instance-1/output-1/build/znc-1.8.2/CMakeFiles/CMakeTmp/CheckSymbolExists.cxx /home/buildroot/autobuild/run/instance-1/output-1/build/znc-1.8.2/CMakeFiles/CMakeTmp/CheckSymbolExists.cxx: In function 'int main(int, char**)': /home/buildroot/autobuild/run/instance-1/output-1/build/znc-1.8.2/CMakeFiles/CMakeTmp/CheckSymbolExists.cxx:8:19: error: 'getpassphrase' was not declared in this scope 8 | return ((int*)(&getpassphrase))[argc]; | ^~~~~~~~~~~~~ CMakeFiles/cmTC_47b6e.dir/build.make:77: recipe for target 'CMakeFiles/cmTC_47b6e.dir/CheckSymbolExists.cxx.o' failed make[2]: *** [CMakeFiles/cmTC_47b6e.dir/CheckSymbolExists.cxx.o] Error 1 make[2]: Leaving directory '/home/buildroot/autobuild/run/instance-1/output-1/build/znc-1.8.2/CMakeFiles/CMakeTmp' Makefile:127: recipe for target 'cmTC_47b6e/fast' failed make[1]: *** [cmTC_47b6e/fast] Error 2 make[1]: Leaving directory '/home/buildroot/autobuild/run/instance-1/output-1/build/znc-1.8.2/CMakeFiles/CMakeTmp' File /home/buildroot/autobuild/run/instance-1/output-1/build/znc-1.8.2/CMakeFiles/CMakeTmp/CheckSymbolExists.cxx: /* */ #include int main(int argc, char** argv) { (void)argv; #ifndef getpassphrase return ((int*)(&getpassphrase))[argc]; #else (void)argc; return 0; #endif }