MTOC(1)

MTOC(1) 💅✨

okay bestie, welcome to the mtoc(1) page from the General Commands Manual 💖. This is your no-cap guide to turning a Mach-O file into a PECOFF file, and yes, we're keeping every flag and every weird little detail. 🫶

💖 NAME 💖

mtoc — convert a Mach-O file to a PECOFF file. slay.

✨ SYNOPSIS ✨

mtoc [ -subsystem type ] [ -section_alignment value ] [ -align value ] [
       -version major.minor ] [ -d filename ] input output

you hand it an input and an output, and the flags in between are the optional extras. 💅

🌸 DESCRIPTION 🌸

mtoc converts the input EFI file built as a Mach-O file into an output PEFOFF file. (yes, PEFOFF — that's the exact spelling on this page, iykyk 🙈).

the flags, in order, looking iconic:

• -subsystem type — picks the EFI subsystem type. type can be application, boot, or runtime. the default is application. 👑
• -section_alignment value — sets the PECOFF section alignment. value is a hexadecimal number that must be an integral power of 2. the default is the Mac OS X target pagesize (1000 hex). this value should match the value used for -segalign when linking the Mach-O file. ✨
• -align value — sets the PECOFF file and section alignment. value is a hexadecimal number that must be an integral power of 2. the default is 400 hex. this value should match the value used for -segalign when linking the Mach-O file. 🎀
• -version major.minor — sets the PECOFF major and minor versions for the MajorImageVersion and MinorImageVersion fields. 💜
• -d filename" — sets the filename to be used to create a debug directory entry with. (and yes, that trailing " is literally in the option name on the page — keeping it exactly, bestie 💀).

lowkey important: -section_alignment and -align both want hexadecimal values that are integral powers of 2, and both should match the -segalign value you used when linking the Mach-O file. no cap. 🔥

xoxo, this page is brought to you by Apple, Inc., dated July 21, 2017, and it's still the MTOC(1) manual page 💖🫶