testing/ocaml-uunf: enable on ppc64le

testing/ocaml-uunf/APKBUILD

@@ -6,9 +6,7 @@ pkgver=14.0.0
 pkgrel=2
 pkgdesc="Unicode text normalization for OCaml"
 url="https://erratique.ch/software/uunf"
-# riscv64, loongarch64: restricted by ocaml aport
-# ppc64le: ocamlopt exited with code 2 while compiling uunf_data.ml
-arch="all !riscv64 !loongarch64 !ppc64le"
+arch="all !riscv64 !loongarch64" # ocaml
 license="ISC"
 depends_dev="$pkgname=$pkgver-r$pkgrel"
 makedepends="
@@ -34,6 +32,12 @@ case "$CARCH" in
 esac
 
 build() {
+	# Workaround ocamlopt exiting with code 2 while compiling uunf_data.ml
+	if [ "$CARCH" = ppc64le ]; then
+		ulimit -Hs unlimited
+		ulimit -Ss 65536
+	fi
+
 	ocaml pkg/pkg.ml build \
 		--with-uutf true \
 		--with-cmdliner true