Add xeus-octave (emscripten-forge#2910)

* Add xeus-octave

* Add pkg-config

Author: IsabelParedes

recipes/recipes_emscripten/xeus-octave/build.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+set -eux
+
+mkdir -p build
+cd build
+
+emcmake cmake ${CMAKE_ARGS} -S .. -B .                     \
+    -DCMAKE_BUILD_TYPE=Release                             \
+    -DCMAKE_PREFIX_PATH=$PREFIX                            \
+    -DCMAKE_SYSTEM_PREFIX_PATH=$PREFIX                     \
+    -DCMAKE_INSTALL_PREFIX=$PREFIX                         \
+    -DCMAKE_FIND_ROOT_PATH="$PREFIX"
+
+emmake make install

recipes/recipes_emscripten/xeus-octave/recipe.yaml

@@ -0,0 +1,53 @@
+context:
+  version: 0.4.0
+  name: xeus-octave
+
+package:
+  name: ${{ name }}
+  version: ${{ version }}
+
+source:
+  url: https://github.com/jupyter-xeus/${{ name }}/archive/refs/tags/v${{ version }}.tar.gz
+  sha256: c0a5ddf85280bfcdce1bb3e77403f4546071f9f8aaa4c58a3f70df045c0e60e9
+
+build:
+  number: 0
+
+requirements:
+  build:
+  - ${{ compiler("cxx") }}
+  - cmake
+  - make
+  - pkg-config
+  host:
+  - xeus
+  - xeus-lite
+  - nlohmann_json
+  - octave
+  - libpng
+  - zlib
+  - libflang
+  - pcre2 >=10.46
+  - libblas >=3.12
+  - liblapack >=3.12
+  - freetype
+  run:
+  - octave
+
+tests:
+- package_contents:
+    files:
+    - bin/xoctave.js
+    - bin/xoctave.wasm
+
+about:
+  homepage: https://github.com/jupyter-xeus/xeus-octave
+  documentation: https://xeus-octave.readthedocs.io
+  license: GPL-3.0-only
+  license_family: GPL
+  license_file: LICENSE
+  summary: Jupyter kernel for GNU Octave
+
+extra:
+  recipe-maintainers:
+  - IsabelParedes