Fix pyyaml cross compilation

recipes/libs/libyaml.yaml

@@ -0,0 +1,22 @@
+inherit: [autotools]
+
+metaEnvironment:
+    PKG_VERSION: "0.2.5"
+    PKG_LICENSE: "MIT"
+
+checkoutSCM:
+    scm: url
+    url: http://pyyaml.org/download/libyaml/yaml-${PKG_VERSION}.tar.gz
+    digestSHA256: c642ae9b75fee120b2d96c712538bd2cf283228d2337df2cf2988e3c02678ef4
+    stripComponents: 1
+
+buildScript: |
+    autotoolsBuild "$1"
+
+multiPackage:
+    dev:
+        packageScript: |
+            autotoolsPackageDev
+    tgt:
+        packageScript: |
+            autotoolsPackageTgt

recipes/python/cython.yaml

@@ -0,0 +1,20 @@
+inherit: ["python3-pkg", "strip"]
+
+metaEnvironment:
+    PKG_VERSION: "3.0.12"
+    PKG_LICENSE: "Apache-2.0"
+
+checkoutSCM:
+    scm: url
+    url: "https://files.pythonhosted.org/packages/\
+        5a/25/886e197c97a4b8e254173002cdc141441e878ff29aaa7d9ba560cd6e4866/cython-${PKG_VERSION}.tar.gz"
+    digestSHA256: b988bb297ce76c671e28c97d017b95411010f7c77fa6623dd0bb47eed1aee1bc
+    stripComponents: 1
+
+buildTools: [target-toolchain]
+buildScript: |
+    python3BuildSetuptools "$1"
+
+packageScript: |
+    python3PackageTgt
+    stripAll .

recipes/python/pyyaml.yaml

@@ -1,9 +1,34 @@
 inherit: [ python3-cext-pkg ]
 
-buildNetAccess: True
+depends:
+    # The Cython compiler is needed for the host environment during pyyaml
+    # builds. Not needed on target after build.
+    - name: python::cython
+      tools:
+          target-toolchain: host-compat-toolchain
+
+    - libs::libyaml-dev
+
+    - use: []
+      depends:
+          - libs::libyaml-tgt
+
+metaEnvironment:
+    PKG_VERSION: "6.0.2"
+    PKG_LICENSE: "MIT"
+
+checkoutSCM:
+    - scm: url
+      url: "https://files.pythonhosted.org/packages/54/ed/\
+          79a089b6be93607fa5cdaedf301d7dfb23af5f25c398d5ead2525b063e17/pyyaml-${PKG_VERSION}.tar.gz"
+      digestSHA256: d584d9ec91ad65861cc08d42e834324ef890a082e591037abe114850ff7bbc3e
+      stripComponents: 1
+
 buildScript: |
-    python3InstallPip \
-        pyyaml==6.0.2
+    export PYYAML_FORCE_CYTHON=1
+    python3CExtBuildSetuptools "$1"
 
 packageScript: |
-    python3PackageTgt
+    python3CExtPackageTgt
+
+provideDeps: [ "*-tgt" ]