c++ - Linker errors when disabling defauly lib and CRT -


i trying build c++ program without using crt getting following linker errors , cannot find solution online. can fix them enabling crt default lib defeats goal.

error lnk2001: unresolved external symbol __imp____acrt_iob_func error lnk2001: unresolved external symbol __imp____stdio_common_vfprintf

disabling default lib totally new me , wondering if on here has came across these errors before , found solution?

you might find linkers , loaders interesting. answer question requires understanding difference between object file , executable program.

from simplest point of view, c++ doesn't define i/o in language. leaves library, typically default crt in case of windows. useful program has have input , create output. how without i/o?

programs run in context of operating system; these called hosted because os provides services , arranges them run on machine. specialized embedded programs -- maybe on microwave oven, example, or in car -- run directly on computer without aid of os. such embedded programs input , output hardware ports , interrupts, , don't have use functions in default runtime library.

if you're interested in developing embedded system or replacing crt else, want disable linking crt. better platform imo netbsd.


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