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update of README.md

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Sylvain PILLOT 2023-03-23 21:07:15 +01:00
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@ -105,6 +105,22 @@ The available options are:
% fxsdk build-cg install
```
**"Cross-Building" a fx-9860G II project for fx-CG 50**
fx-9860G II sources can be automatically converted to run on fx-CG 50, provided no
low level function/specific hardware manipulation/or syscall is used by the program.
The command is very similar to fx-9860G II one, except it is `fxsdk build-fx-as-cg`
instead of `fxsdk build-fx`.
The available options are:
```
% fxsdk build-fx-as-cg
% fxsdk build-fx-as-cg install
```
## Using in CMake-based add-ins
Find the `Gint` module and link against `Gint::Gint`. gint declares the include
@ -125,6 +141,10 @@ using the fxSDK, you will need to:
* Link with `-T fx9860g.ld -lgint-fx -lopenlibm -lc` on fx-9860G;
* Link with `-T fxcg50.ld -lgint-cg -lopenlibm -lc` on fx-CG 50.
Manually building a fx-9860G project to run on a fx-CG50 can be done :
* Build with `-m4-nofpu -mb -DFXCG50 -DFX9860G_AS_CG`;
* Link with `-T fxcg50.ld -lgint-fxascg -lopenlibm -lc`.
If you don't have a standard library such as
[Memallox's port of newlib](/PlaneteCasio/libc), you also need `-nostdlib`. I
typically use `-m3 -mb` or `-m4-nofpu -mb` to specify the platform, but that