CODEWITHSUNDEEP
gcclinker
Hossam Alzomor
Hossam Alzomor

Reputation: 181

arm-none-eabi-gcc: error: unrecognized command line option '--cref'; did you mean '--xref'?

I am using arm-none-eabi-gcc for STM32 I am trying to generate cross-reference table by passing option '--cref' to the linker, but I get this error 

arm-none-eabi-gcc: error: unrecognized command line option '--cref'; did you mean '--xref'?

is '--xref' a replacement for '--cref' ?

Upvotes: 3

Views: 6839

Answers (1)

Mike Kinghan
Mike Kinghan

Reputation: 61147

--cref is an option for the GNU binutils linker, ld, but it is not an option of gcc

You can direct gcc to pass such options through to ld when it invokes the linker by using the the gcc option -Wl, which has the usage:

-Wl,<ld-option>[,<ld-option>...]

So, instead of --cref, pass -Wl,--cref in your gcc commandline.

By itself, this will make the linker print the cross-reference table on the standard output. If you would prefer to have it in a mapfile, then request a mapfile from the linker as well and the cross-reference table will be appended to it: -Wl,--cref,-Map=mapfile

(--xref was an option for gcc long ago. It is not longer one, but the commandline parser will still suggest it as one that you might have meant when it parses an unknown option.)

Upvotes: 3

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