Hey,

I'd like to suggest that the build is updated to include all possible mcs51 targets.

At the minute, medium-stack-auto and huge-stack-auto are not built by default. This is inconvenient for e.g. developers intending to use Contiki (https://github.com/contiki-os/contiki/wiki/8051-Requirements includes instructions for recompiling sdcc).

The reason given by the SDCC devs for not bundling these by default was given 18 years ago [https://sdcc-user.narkive.com/tRiYWp8k/compiling-sdcc-with-libary-xstack-mmcs51-model-mcs51-xstack-auto] as "to keep the load on the compile farm small".

I've made the following patch to pkgbuild locally, which is equivalent to the change suggested by the Contiki wiki for version 4.3.0:

```
diff --git a/PKGBUILD b/PKGBUILD
index b487d9b..33a301c 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -22,6 +22,8 @@ sha256sums=('2a6fc0f021080103daf393ac0efea8ce0f5e9fe2140dce30b999282c81c893cd')
prepare() {
cd "$srcdir/$pkgname-$pkgver"
sed -i 's|CC -E|CC -O2 -E|g' support/sdbinutils/libiberty/configure
+ # Build all models for mcs51 by default
+ sed -i 's|models small-mcs51-stack-auto large-mcs51-stack-auto|models model-mcs51-stack-auto|g' device/lib/Makefile.in
}

build() {
```

This builds the extra models. The package size is 9.2MB with or without the patch; the installed size goes from 352M to 353M with the patch. So I think the additional overhead is worth the improved convenience.

Cheers,

Mark