ld linux command

ld

ld [options] objfiles

Combine several objfiles, in the specified order, into a single executable object module (a.out by default). ld is the link editor and is often invoked automatically by compiler commands.

Options

-c file

Consult file for commands.

-d, -dc, -dp

Force the assignment of space to common symbols.

-defsym symbol=expression

Create the global symbol with the value expression.

-e symbol

Set symbol as the address of the output file's entry point.

-i

Produce a linkable output file; attempt to set its magic number to OMAGIC.

-larch

Include the archive file arch in the list of files to link.

-m linker

Emulate linker.

-n

Make text read-only; attempt to set NMAGIC.

-noinhibit-exec

Produce output file even if errors are encountered.

-o output

Place output in output, instead of a.out.

-oformat format

Specify output format.

-r

Produce a linkable output file; attempt to set its magic number to OMAGIC.

-s

Do not include any symbol information in output.

-shared

Create a shared library.

-sort-common

Do not sort global common symbols by size.

-t

Announce each input file's name as it is processed.

-u symbol

Force symbol to be undefined.

-v, --version

Show version number.

--verbose

Print information about ld; print the names of input files while attempting to open them.

-warn-common

Warn when encountering common symbols combined with other constructs.

-warn-once

Provide only one warning per undefined symbol.

-x

With -s or -S, delete all local symbols that begin with L.

-L dir

Search directory dir before standard search directories (this option must precede the -l option that searches that directory).

-M

Display a link map on standard out.

-Map file

Print a link map to file.

-N

Allow reading of and writing to both data and text; mark ouput if it supports Unix magic numbers; do not page-align data.

-R file

Obtain symbol names and addresses from file, but suppress relocation of file and its inclusion in output.

-S

Do not include debugger symbol information in output.

-Tbss address

Begin bss segment of output at address.

-Tdata address

Begin data segment of output at address.

-Ttext address

Begin text segment of output at address.

-Ur

Synonymous with -r except when linking C++ programs, where it resolves constructor references.

-X

With -s or -S, delete local symbols beginning with L.

-V

Show version number and emulation linkers for -m option.