Menu
I have a Mac OS X command-line tool that would benefit from having some data embedded in the binary file itself.
I know mach-o files support multiple segments, some of which can be used for storing arbitrary data. But I can't find a command-line tool to do that.
While I know there are other, probably simpler ways (e.g. convert the data file into C source code and have it get linked in by gcc) to get the data into my binary this problem has piqued my interest. Anyone know the magic?
247
MacBinary is a file format that combines the two forks of a classic Mac OS file into a single file, along with HFS's extended metadata. The resulting file is suitable for transmission over FTP, the World Wide Web, and electronic mail.
The file is probably an archive, application, or other binary file encoded to protect the Mac's forked file structure. To decode a MacBinary document in Mac OS, Mac OS X, or Windows, use StuffIt Expander. Simply drag and drop the file onto the StuffIt Expander icon and it will decode the file.
By putting /usr/local/bin after /usr/bin and /bin , Mac upends the usual system. Normally, you can put something into /usr/local/bin (say a second Perl interpreter, compiled in some non-standard way), and then a regular user will hit the custom one rather than the system-wide one first. This is good.
The linker, ld, takes an argument -sectcreate.
From the man page,
-sectcreate segname sectname file The section sectname in the segment segname is created from the contents of file file. The combination of segname and sectname must be unique there cannot already be a section (segname,sectname) from any other input.
GCC also has a section attribute that can be applied to a variable to say that it belongs in a non-standard section.
69
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
