libobjc2: Add new recipe for 2.2.1

Adds a new recipe for libobjc2.  This package can only be built with clang.

Author: qmfrederik

recipes/libobjc2/all/conandata.yml

@@ -0,0 +1,4 @@
+sources:
+  "2.2.1":
+    url: "https://github.com/gnustep/libobjc2/archive/v2.2.1.zip"
+    sha256: "b0afc1d98a6f7208fb5ce1fc8b5848b5ba6dba1f4fcd755fbe3fc78b5e4b3308"

recipes/libobjc2/all/conanfile.py

@@ -0,0 +1,78 @@
+from conan import ConanFile
+from conan.errors import ConanInvalidConfiguration
+from conan.tools.build import check_min_cppstd
+from conan.tools.cmake import CMake, CMakeDeps, CMakeToolchain, cmake_layout
+from conan.tools.files import apply_conandata_patches, copy, export_conandata_patches, get, rm, rmdir
+from conan.tools.microsoft import is_msvc, is_msvc_static_runtime
+import os
+
+required_conan_version = ">=2.0.9"
+
+class PackageConan(ConanFile):
+    name = "libobjc2"
+    description = "Objective-C runtime library intended for use with Clang."
+    license = "MIT"
+    url = "https://github.com/conan-io/conan-center-index"
+    homepage = "https://github.com/gnustep/libobjc2"
+    topics = ("objective-c", "objective-c-plus-plus", "clang", "gnustep", "objective-c-runtime", "runtime-library")
+    package_type = "library"
+    settings = "os", "arch", "compiler", "build_type"
+    options = {
+        "shared": [True, False],
+        "fPIC": [True, False],
+    }
+    default_options = {
+        "shared": False,
+        "fPIC": True,
+    }
+
+    def export_sources(self):
+        export_conandata_patches(self)
+
+    def configure(self):
+        if self.options.shared:
+            self.options.rm_safe("fPIC")
+
+    def layout(self):
+        cmake_layout(self, src_folder="src")
+
+    def requirements(self):
+        self.requires("tsl-robin-map/[^1.3.0]")
+
+    def validate(self):
+        if self.settings.compiler != "apple-clang" and self.settings.compiler != "clang":
+            raise ConanInvalidConfiguration("libobjc2 supports clang only.")
+
+    def build_requirements(self):
+        self.tool_requires("cmake/[>=3.16 <4]")
+
+    def source(self):
+        get(self, **self.conan_data["sources"][self.version], strip_root=True)
+        apply_conandata_patches(self)
+
+    def generate(self):
+        tc = CMakeToolchain(self)
+        # Prevent picking up a default install location through gnustep-config
+        tc.variables["GNUSTEP_INSTALL_TYPE"] = "NONE"
+        tc.variables["TESTS"] = not self.conf.get("tools.build:skip_test", default=False)
+        tc.generate()
+
+        deps = CMakeDeps(self)
+        deps.generate()
+
+    def build(self):
+        cmake = CMake(self)
+        cmake.configure()
+        cmake.build()
+        cmake.test()
+
+    def package(self):
+        copy(self, "LICENSE", self.source_folder, os.path.join(self.package_folder, "licenses"))
+        cmake = CMake(self)
+        cmake.install()
+
+        rmdir(self, os.path.join(self.package_folder, "lib", "pkgconfig"))
+        rm(self, "*.pdb", self.package_folder, recursive=True)
+
+    def package_info(self):
+        self.cpp_info.libs = ["objc"]

recipes/libobjc2/all/test_package/CMakeLists.txt

@@ -0,0 +1,7 @@
+cmake_minimum_required(VERSION 3.16)
+project(test_package LANGUAGES C)
+
+find_package(libobjc2 REQUIRED CONFIG)
+
+add_executable(${PROJECT_NAME} test_package.c)
+target_link_libraries(${PROJECT_NAME} PRIVATE libobjc2::libobjc2)

recipes/libobjc2/all/test_package/conanfile.py

@@ -0,0 +1,25 @@
+from conan import ConanFile
+from conan.tools.build import can_run
+from conan.tools.cmake import cmake_layout, CMake
+import os
+
+
+class TestPackageConan(ConanFile):
+    settings = "os", "arch", "compiler", "build_type"
+    generators = "CMakeDeps", "CMakeToolchain"
+
+    def layout(self):
+        cmake_layout(self)
+
+    def requirements(self):
+        self.requires(self.tested_reference_str)
+
+    def build(self):
+        cmake = CMake(self)
+        cmake.configure()
+        cmake.build()
+
+    def test(self):
+        if can_run(self):
+            bin_path = os.path.join(self.cpp.build.bindir, "test_package")
+            self.run(bin_path, env="conanrun")

recipes/libobjc2/all/test_package/test_package.c

@@ -0,0 +1,9 @@
+#include <stdlib.h>
+#include "objc/objc.h"
+#include "objc/encoding.h"
+
+int main(void) {
+    char type = _C_CLASS;
+    objc_sizeof_type(&type);
+    return EXIT_SUCCESS;
+}

recipes/libobjc2/config.yml

@@ -0,0 +1,3 @@
+versions:
+  "2.2.1":
+    folder: all