clang version 14.0.1 Target: x86_64-pc-linux-gnu Thread model: posix InstalledDir: /usr/lib/llvm/14/bin clang version 14.0.1 Target: x86_64-pc-linux-gnu Thread model: posix InstalledDir: /usr/lib/llvm/14/bin Selected GCC installation: /usr/lib/gcc/x86_64-pc-linux-gnu/11.3.0 Candidate multilib: .;@m64 Candidate multilib: 32;@m32 Selected multilib: .;@m64 clang-14: error: unsupported option '-V -o' clang-14: error: no such file or directory: 'garbage2' clang-14: error: no input files ignoreme: error: unknown type name 'choke' choke me ^ ignoreme: error: expected ';' after top level declarator choke me ^ ; 2 errors generated. ignoreme: error: call to undeclared library function 'exit' with type 'void (int) __attribute__((noreturn))'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] exit(0); ^ ignoreme: note: include the header or explicitly provide a declaration for 'exit' configure:3594:10: fatal error: 'ac_nonexistent.h' file not found #include ^~~~~~~~~~~~~~~~~~ configure:3685:10: fatal error: 'ac_nonexistent.h' file not found #include ^~~~~~~~~~~~~~~~~~ configure:3833:7: error: call to undeclared library function 'exit' with type 'void (int) __attribute__((noreturn))'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] exit(2); ^ configure:3833:7: note: include the header or explicitly provide a declaration for 'exit' configure:4064:14: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype] static char *e (p, i) ^