[DO-971] ffmpeg recipe with requirements (!9)

Co-authored-by: aleksandr.vodyanov <aleksandr.vodyanov@avroid.tech>
Reviewed-on: https://git.avroid.tech/Conan/conan_build/pulls/9

recipes/vorbis/all/conanfile.py

@@ -0,0 +1,114 @@
+from conan import ConanFile
+from conan.tools.cmake import CMake, CMakeDeps, CMakeToolchain, cmake_layout
+from conan.tools.files import apply_conandata_patches, copy, export_conandata_patches, get, rmdir
+import os
+
+required_conan_version = ">=1.54.0"
+
+
+class VorbisConan(ConanFile):
+    name = "vorbis"
+    description = "The VORBIS audio codec library"
+    topics = ("audio", "codec")
+    url = "https://github.com/conan-io/conan-center-index"
+    homepage = "https://xiph.org/vorbis/"
+    license = "BSD-3-Clause"
+    package_type = "library"
+    settings = "os", "arch", "build_type", "compiler"
+    options = {
+        "shared": [True, False],
+        "fPIC": [True, False],
+    }
+    default_options = {
+        "shared": False,
+        "fPIC": True,
+    }
+
+    def export_sources(self):
+        export_conandata_patches(self)
+
+    def config_options(self):
+        if self.settings.os == "Windows":
+            del self.options.fPIC
+
+    def configure(self):
+        if self.options.shared:
+            self.options.rm_safe("fPIC")
+        self.settings.rm_safe("compiler.cppstd")
+        self.settings.rm_safe("compiler.libcxx")
+
+    def layout(self):
+        cmake_layout(self, src_folder="src")
+
+    def requirements(self):
+        self.requires("ogg/1.3.5", transitive_headers=True, transitive_libs=True)
+
+    def source(self):
+        get(self, **self.conan_data["sources"][self.version], strip_root=True)
+
+    def generate(self):
+        tc = CMakeToolchain(self)
+        # Relocatable shared lib on Macos
+        tc.cache_variables["CMAKE_POLICY_DEFAULT_CMP0042"] = "NEW"
+        tc.generate()
+        cd = CMakeDeps(self)
+        cd.generate()
+
+    def build(self):
+        apply_conandata_patches(self)
+        cmake = CMake(self)
+        cmake.configure()
+        cmake.build()
+
+    def package(self):
+        copy(self, "COPYING", src=self.source_folder, dst=os.path.join(self.package_folder, "licenses"))
+        cmake = CMake(self)
+        cmake.install()
+        rmdir(self, os.path.join(self.package_folder, "lib", "cmake"))
+        rmdir(self, os.path.join(self.package_folder, "lib", "pkgconfig"))
+
+    def package_info(self):
+        self.cpp_info.set_property("cmake_file_name", "Vorbis")
+        # see https://github.com/conan-io/conan-center-index/pull/4173
+        self.cpp_info.set_property("pkg_config_name", "vorbis-all-do-not-use")
+
+        # vorbis
+        self.cpp_info.components["vorbismain"].set_property("cmake_target_name", "Vorbis::vorbis")
+        self.cpp_info.components["vorbismain"].set_property("pkg_config_name", "vorbis")
+        self.cpp_info.components["vorbismain"].libs = ["vorbis"]
+        if self.settings.os in ["Linux", "FreeBSD"]:
+            self.cpp_info.components["vorbismain"].system_libs.append("m")
+        self.cpp_info.components["vorbismain"].requires = ["ogg::ogg"]
+
+        # TODO: Upstream VorbisConfig.cmake defines components 'Enc' and 'File',
+        # which are related to imported targets Vorbis::vorbisenc and Vorbis::vorbisfile
+        # Find a way to emulate this in CMakeDeps. See https://github.com/conan-io/conan/issues/10258
+
+        # vorbisenc
+        self.cpp_info.components["vorbisenc"].set_property("cmake_target_name", "Vorbis::vorbisenc")
+        self.cpp_info.components["vorbisenc"].set_property("pkg_config_name", "vorbisenc")
+        self.cpp_info.components["vorbisenc"].libs = ["vorbisenc"]
+        self.cpp_info.components["vorbisenc"].requires = ["vorbismain"]
+
+        # vorbisfile
+        self.cpp_info.components["vorbisfile"].set_property("cmake_target_name", "Vorbis::vorbisfile")
+        self.cpp_info.components["vorbisfile"].set_property("pkg_config_name", "vorbisfile")
+        self.cpp_info.components["vorbisfile"].libs = ["vorbisfile"]
+        self.cpp_info.components["vorbisfile"].requires = ["vorbismain"]
+
+        # TODO: to remove in conan v2 once cmake_find_package_* generators removed
+        self.cpp_info.names["cmake_find_package"] = "Vorbis"
+        self.cpp_info.names["cmake_find_package_multi"] = "Vorbis"
+        self.cpp_info.names["pkg_config"] = "vorbis-all-do-not-use"
+        self.cpp_info.components["vorbismain"].names["cmake_find_package"] = "vorbis"
+        self.cpp_info.components["vorbismain"].names["cmake_find_package_multi"] = "vorbis"
+        self.cpp_info.components["vorbisenc"].names["cmake_find_package"] = "vorbisenc"
+        self.cpp_info.components["vorbisenc"].names["cmake_find_package_multi"] = "vorbisenc"
+        self.cpp_info.components["vorbisfile"].names["cmake_find_package"] = "vorbisfile"
+        self.cpp_info.components["vorbisfile"].names["cmake_find_package_multi"] = "vorbisfile"
+        self.cpp_info.components["vorbisenc-alias"].names["cmake_find_package"] = "Enc"
+        self.cpp_info.components["vorbisenc-alias"].names["cmake_find_package_multi"] = "Enc"
+        self.cpp_info.components["vorbisenc-alias"].requires.append("vorbisenc")
+        self.cpp_info.components["vorbisfile-alias"].names["cmake_find_package"] = "File"
+        self.cpp_info.components["vorbisfile-alias"].names["cmake_find_package_multi"] = "File"
+        self.cpp_info.components["vorbisfile-alias"].requires.append("vorbisfile")