Much more concise answer than from [1], but [1] is free advice less internet connection cost(s): 1) 'Is main() a required startup function?' & 'Is standard lib

Much more concise answer than from [1], but [1] is free advice less internet connection cost(s): 1) 'Is main() a required startup function?' & 'Is standard library initialization required for main() startup?' 2) But sdiff -s of answer from [1] to 'Is a dynamic linker required for startup page alignement?' with 'Is a dynamic linker required for startup page alignment?' is kinda bit verbose. 3) 'Is standard library initialization required for main() startup? How much resources should be allocated to startup libraries?' [1] answer sounds like to overly broad an approach. [1] : https://ask-paulg.up.railway.app/ https://ask-paulg.up.railway.app/