Initial support for wasmtime package

recipes/wasmtime/all/conandata.yml

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+sources:
+  "0.29.0":
+    Windows:
+      "x86_64":
+        url: "https://github.com/bytecodealliance/wasmtime/releases/download/v0.29.0/wasmtime-v0.29.0-x86_64-windows-c-api.zip"
+        sha256: "83d42ab6b78804f6dcd58f4bfc1bebb3a56a21309fce28e07a5bfbecc07dc8fa"
+    MinGW:
+      "x86_64":
+        url: "https://github.com/bytecodealliance/wasmtime/releases/download/v0.29.0/wasmtime-v0.29.0-x86_64-mingw-c-api.zip"
+        sha256: "d44b1345a7e3f86c71af6cc225b83bdb3aef874fb1eaac7a8f06ad3b3a6a5c3e"
+    Linux:
+      "x86_64":
+        url: "https://github.com/bytecodealliance/wasmtime/releases/download/v0.29.0/wasmtime-v0.29.0-x86_64-linux-c-api.tar.xz"
+        sha256: "b8ee53ddebfc60a0cf981ce225837b998b984ee94326e03cac135d9d78af57e5"
+      "armv8":
+        url: "https://github.com/bytecodealliance/wasmtime/releases/download/v0.29.0/wasmtime-v0.29.0-aarch64-linux-c-api.tar.xz"
+        sha256: "c13f906ca84c3321644cb9cd93fef4db431572e554a7527dc30a795994cbcc05"
+    Macos:
+      "x86_64":
+        url: "https://github.com/bytecodealliance/wasmtime/releases/download/v0.29.0/wasmtime-v0.29.0-x86_64-macos-c-api.tar.xz"
+        sha256: "e6e38b1837509af3ce5ca490d90c59d6082f54eb71dcbb49414ee5f295137bcb"
+    Android:
+      "armv8":
+        url: "https://github.com/bytecodealliance/wasmtime/releases/download/v0.29.0/wasmtime-v0.29.0-aarch64-linux-c-api.tar.xz"
+        sha256: "c9036f82c2fb2c3ed8291c6d37068dce6b08dff83f6292938edc0c8907284549"

recipes/wasmtime/all/conanfile.py

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+from conans import ConanFile, CMake, tools
+from conans.errors import ConanInvalidConfiguration, ConanException
+import os
+import shutil
+
+required_conan_version = ">=1.33.0"
+
+class WasmtimeConan(ConanFile):
+    name = 'wasmtime'
+    homepage = 'https://github.com/bytecodealliance/wasmtime'
+    license = 'Apache-2.0'
+    url = 'https://github.com/conan-io/conan-center-index'
+    description = "Standalone JIT-style runtime for WebAssembly, using Cranelift"
+    topics = ("webassembly", "wasm", "wasi")
+    settings = "os", "compiler", "arch"
+    options = { "shared": [True, False] }
+    default_options = { 'shared': False }
+    no_copy_source = True
+
+    @property
+    def _minimum_cpp_standard(self):
+        return 11
+
+    @property
+    def _minimum_compilers_version(self):
+        return {
+            "Visual Studio": "15",
+            "apple-clang": "9.4",
+            "clang": "3.3",
+            "gcc": "5.1"
+        }
+
+    @property
+    def _sources_key(self):
+        if self.settings.compiler == "Visual Studio":
+            return "Windows"
+        elif self.settings.os == "Windows" and self.settings.compiler == "gcc":
+            return "MinGW"
+        return str(self.settings.os)
+
+    def configure(self):
+        del self.settings.compiler.libcxx
+        del self.settings.compiler.cppstd
+        del self.settings.compiler.runtime
+
+    def validate(self):
+        compiler = self.settings.compiler
+        min_version = self._minimum_compilers_version[str(compiler)]
+        try:
+            if tools.Version(compiler.version) < min_version:
+                msg = (
+                    "{} requires C{} features which are not supported by compiler {} {} !!"
+                ).format(self.name, self._minimum_cpp_standard, compiler, compiler.version)
+                raise ConanInvalidConfiguration(msg)
+        except KeyError:
+            msg = (
+                "{} recipe lacks information about the {} compiler, "
+                "support for the required C{} features is assumed"
+            ).format(self.name, compiler, self._minimum_cpp_standard)
+            self.output.warn(msg)
+
+        try:
+            self.conan_data["sources"][self.version][self._sources_key][str(self.settings.arch)]
+        except KeyError:
+            raise ConanInvalidConfiguration("Binaries for this combination of architecture/version/os not available")
+
+        if (self.settings.compiler, self.settings.os) == ("gcc", "Windows") and self.options.shared:
+            # FIXME: https://github.com/bytecodealliance/wasmtime/issues/3168
+            raise ConanInvalidConfiguration("Shared mingw is currently not possible")
+
+    def source(self):
+        tools.get(**self.conan_data["sources"][self.version][self._sources_key][str(self.settings.arch)], destination=self.source_folder, strip_root=True)
+
+    def package(self):
+        shutil.copytree(os.path.join(self.source_folder, "include"),
+                        os.path.join(self.package_folder, "include"))
+
+        srclibdir = os.path.join(self.source_folder, "lib")
+        if self.options.shared:
+            self.copy("wasmtime.dll.lib", src=srclibdir, dst="lib", keep_path=False)
+            self.copy("wasmtime.dll", src=srclibdir, dst="bin", keep_path=False)
+            self.copy("libwasmtime.dll.a", src=srclibdir, dst="lib", keep_path=False)
+            self.copy("libwasmtime.so*", src=srclibdir, dst="lib", keep_path=False)
+            self.copy("libwasmtime.dylib", src=srclibdir,  dst="lib", keep_path=False)
+        else:
+            self.copy("wasmtime.lib", src=srclibdir, dst="lib", keep_path=False)
+            self.copy("libwasmtime.a", src=srclibdir, dst="lib", keep_path=False)
+
+        self.copy('LICENSE', dst='licenses', src=self.source_folder)
+
+    def package_info(self):
+        if self.options.shared:
+            if self.settings.os == "Windows":
+                self.cpp_info.libs = ["wasmtime.dll"]
+            else:
+                self.cpp_info.libs = ["wasmtime"]
+        else:
+            if self.settings.os == "Windows":
+                self.cpp_info.defines= ["/DWASM_API_EXTERN=", "/DWASI_API_EXTERN="]
+            self.cpp_info.libs = ["wasmtime"]
+
+        if self.settings.os == 'Windows':
+            self.cpp_info.system_libs = ['ws2_32', 'bcrypt', 'advapi32', 'userenv', 'ntdll', 'shell32', 'ole32']
+        elif self.settings.os == 'Linux':
+            self.cpp_info.system_libs = ['pthread', 'dl', 'm']

recipes/wasmtime/all/test_package/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.1)
+project(PackageTest C)
+
+set(CMAKE_C_STANDARD 11)
+
+include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
+conan_basic_setup()
+
+find_package(wasmtime REQUIRED)
+
+add_executable(example example.c)
+target_link_libraries(example PRIVATE wasmtime::wasmtime)
+target_compile_options(example PRIVATE ${CONAN_COMPILE_DEFINITIONS_WASMTIME})

recipes/wasmtime/all/test_package/conanfile.py

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+from conans import ConanFile, CMake, tools
+import os
+
+
+class WasmtimeTestConan(ConanFile):
+    settings = 'os', 'compiler', 'build_type', 'arch'
+    generators = 'cmake', 'cmake_find_package'
+
+    def build(self):
+        cmake = CMake(self)
+        cmake.configure()
+        cmake.build()
+
+    def test(self):
+        if not tools.cross_building(self):
+            bin_path = os.path.join('bin', 'example')
+            self.run(bin_path, run_environment=True)

recipes/wasmtime/all/test_package/example.c

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+#include <wasmtime.h>
+
+int main() {
+  char* wat = "";
+  wasm_byte_vec_t ret;
+  wasmtime_error_t *error = wasmtime_wat2wasm(wat, sizeof(wat), &ret);
+  return 0;
+}

recipes/wasmtime/config.yml

@@ -0,0 +1,3 @@
+versions:
+  "0.29.0":
+    folder: all