Simplify relibc test recipe replay

recipes/tests/relibc-tests/recipe.toml

@@ -5,9 +5,29 @@ same_as = "../../core/relibc"
 
 [build]
 template = "custom"
+dependencies = ["relibc"]
 script = """
+git -C "${COOKBOOK_SOURCE}" archive --format=tar HEAD | tar -xf -
+rsync -av "${COOKBOOK_SOURCE}/openlibm/" ./openlibm/
+
+patch -N -p1 < "${COOKBOOK_ROOT}/local/patches/relibc/redox.patch"
+
+make headers TARGET="${TARGET}"
+
+RELIBC_STAGE="${COOKBOOK_ROOT}/recipes/core/relibc/target/${TARGET}/stage"
+if [ ! -d "${RELIBC_STAGE}/usr" ]; then
+    RELIBC_STAGE="${COOKBOOK_ROOT}/recipes/core/relibc/target/${TARGET}/stage.tmp"
+fi
+
+mkdir -p "${COOKBOOK_SYSROOT}"
+rsync -av "${RELIBC_STAGE}/usr/" "${COOKBOOK_SYSROOT}/"
+rsync -av "./target/${TARGET}/include/" "${COOKBOOK_SYSROOT}/include/"
+
+mkdir -p ./sysroot
+ln -sfn "${COOKBOOK_SYSROOT}" "./sysroot/${TARGET}"
+
 mkdir -pv "${COOKBOOK_STAGE}/home/user/relibc-tests"
-cp -rv "${COOKBOOK_SOURCE}/tests" "${COOKBOOK_STAGE}/home/user/relibc-tests"
+cp -rv ./tests "${COOKBOOK_STAGE}/home/user/relibc-tests"
 """
 
 [package]