On 6/3/2026 2:14 AM, Kito Cheng wrote:
The syntax of multilib-generator was defined as below:
```
<primary arch>-<abi>-<additional arches>-<extensions>
```
And now extend with one more optional argument:
```
<primary arch>-<abi>-<additional arches>-<extensions>[-<extra-options>]
```
Detail syntax of `<extra-option>`:
```
<extra-options> := <extra-option> ',' <extra-options>
| <extra-option>
<extra-option> := <option> '/' <multi-lib-folder>
```
NOTE: Dash ('-') in the option name must replace with underline ('_'),
and leading dash should skip, e.g. `-fcf-protection=full` become
`fcf_protection=full`.
e.g.
rv64imafdc_zicfiss_zicfilp-lp64d---fcf_protection=full/cfi
It will build a multilib with
`-march=rv64imafdc_zicfiss_zicfilp -mabi=lp64d -fcf-protection=full`
And will use `rv64imafdc_zicfiss_zicfilp/lp64d/cfi` as multilib folder.
gcc/ChangeLog:
* config/riscv/multilib-generator: Support extra options in the
multilib config string.
* doc/install.texi (--with-multilib-generator): Document the extra
options syntax.
Given you know this code better than anyone, happy to step aside and let
you self-approve :-)
jeff
