ld: unknown option: -Ttext on Mac OS X maverick

Question

I am trying to run this command

ld -Ttext 0x1000 -o kernel.bin loader.o main.o video.o

but it returns ld: unknown option: -Ttext

Is there any alternatives to this action or a way to make ld work?

Here is written, that option -Ttext exists, but in my case it shows that no http://linux.about.com/library/cmd/blcmdl1_ld.htm

@constantius I am following this tutorial. If I understand correctly, this command linked three *.o files into one kernel.bin https://code.google.com/p/onyxkernel/wiki/FirstStep — Roman Bugaian, Nov 28 '13 at 15:40

score 3 · Accepted Answer · answered Jan 18 '17 at 21:08

"-Ttext" is where in memory the text(code) segment will be. The macintosh ld does not support that option. It does support "-segaddr text"(it might not be text, though, it might be _text or __text). If you are writing an operating system, you probably want a separate toolchain because the macintosh toolchain is only designed for mach-o objects for use on the macintosh.

score -2 · Answer 2 · answered Nov 28 '13 at 14:59

-2

ld's man page says:

   -T scriptfile
   --script=scriptfile
       Use scriptfile as the linker script.  This script replaces ld's
       default linker script (rather than adding to it), so commandfile
       must specify everything necessary to describe the output file.
       If scriptfile does not exist in the current directory, "ld" looks
       for it in the directories specified by any preceding -L options.
       Multiple -T options accumulate.

So you should

Use the correct format: ld -T text 0x1000 -o kernel.bin loader.o main.o video.o
Make sure text exists in the current directory and is indeed a linker script.

answered Nov 28 '13 at 14:59

Michael Pankov

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here is written that option -Ttext exists, and my command is correct http://linux.about.com/library/cmd/blcmdl1_ld.htm – Roman Bugaian Nov 28 '13 at 15:36
@RomaBugaian there's a space between `-T` and `scriptfile` in the example. – Michael Pankov Nov 28 '13 at 16:03

ld: unknown option: -Ttext on Mac OS X maverick

2 Answers2