Hello folks , I have 200+ legacy c code which were compiled using c89/c99 compilers, i am planning to move/migrate using latest compilers and migrate to 64 bit env , doing so i could able to fix compiler errors/warnings for 32bit-ILP bit to 64bit-LP bit env . Some warnings i found is as mentioned below : 1 ) almost all programs are having return type as void for main , and current compiler throws warning that main should return int , i need to change each and every file converting return type of main from void to int and end of main i need to add one more statement return 0; for OS . Now i would like to know is there anyway i can do that in command line of compiler where i can make all my c programs return (0) at the end of the main and return int for main . 2) Also is there any way i can get only one kind of warnings using option in command line of compiler so that i can list which files are impacted for a particular warning rather than all warnings , as i am compiling all the c programs at one go . i could not get any help from searching the web , just i want avoid the manual work as there are lot of c programs and It can save a lot of time Thanks for your inputs in advance Thanks Naren
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