binutils: Target Selection
17.1 Target Selection
=====================
A "target" is an object file format. A given target may be supported
for multiple architectures (
Architecture Selection). A target
selection may also have variations for different operating systems or
architectures.
The command to list valid target values is 'objdump -i' (the first
column of output contains the relevant information).
Some sample values are: 'a.out-hp300bsd', 'ecoff-littlemips',
'a.out-sunos-big'.
You can also specify a target using a configuration triplet. This is
the same sort of name that is passed to 'configure' to specify a target.
When you use a configuration triplet as an argument, it must be fully
canonicalized. You can see the canonical version of a triplet by
running the shell script 'config.sub' which is included with the
sources.
Some sample configuration triplets are: 'm68k-hp-bsd',
'mips-dec-ultrix', 'sparc-sun-sunos'.
'objdump' Target
----------------
Ways to specify:
1. command-line option: '-b' or '--target'
2. environment variable 'GNUTARGET'
3. deduced from the input file
'objcopy' and 'strip' Input Target
----------------------------------
Ways to specify:
1. command-line options: '-I' or '--input-target', or '-F' or
'--target'
2. environment variable 'GNUTARGET'
3. deduced from the input file
'objcopy' and 'strip' Output Target
-----------------------------------
Ways to specify:
1. command-line options: '-O' or '--output-target', or '-F' or
'--target'
2. the input target (see "'objcopy' and 'strip' Input Target" above)
3. environment variable 'GNUTARGET'
4. deduced from the input file
'nm', 'size', and 'strings' Target
----------------------------------
Ways to specify:
1. command-line option: '--target'
2. environment variable 'GNUTARGET'
3. deduced from the input file
Info Catalog
binutils: Selecting the Target System
binutils: Architecture Selection