[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/libalsa/all/conanfile.py

@@ -0,0 +1,109 @@
+from conan import ConanFile
+from conan.errors import ConanInvalidConfiguration
+from conan.tools.env import VirtualBuildEnv
+from conan.tools.files import apply_conandata_patches, chdir, copy, export_conandata_patches, get, rm, rmdir
+from conan.tools.gnu import Autotools, AutotoolsToolchain
+from conan.tools.layout import basic_layout
+from conan.tools.scm import Version
+import os
+
+required_conan_version = ">=1.53.0"
+
+
+class LibalsaConan(ConanFile):
+    name = "libalsa"
+    description = "Library of ALSA: The Advanced Linux Sound Architecture, that provides audio " \
+                  "and MIDI functionality to the Linux operating system"
+    license = "LGPL-2.1-or-later"
+    url = "https://github.com/conan-io/conan-center-index"
+    homepage = "https://github.com/alsa-project/alsa-lib"
+    topics = ("alsa", "sound", "audio", "midi")
+    package_type = "library"
+    settings = "os", "arch", "compiler", "build_type"
+    options = {
+        "shared": [True, False],
+        "fPIC": [True, False],
+        "disable_python": [True, False],
+    }
+    default_options = {
+        "shared": False,
+        "fPIC": True,
+        "disable_python": True,
+    }
+
+    def export_sources(self):
+        export_conandata_patches(self)
+
+    def configure(self):
+        if self.options.shared:
+            self.options.rm_safe("fPIC")
+        self.settings.rm_safe("compiler.libcxx")
+        self.settings.rm_safe("compiler.cppstd")
+
+    def layout(self):
+        basic_layout(self, src_folder="src")
+
+    def validate(self):
+        if self.settings.os != "Linux":
+            raise ConanInvalidConfiguration(f"{self.ref} only supports Linux")
+
+#    def build_requirements(self):
+#        self.tool_requires("libtool/2.4.7")
+
+    def source(self):
+        get(self, **self.conan_data["sources"][self.version], strip_root=True)
+
+    def generate(self):
+        virtual_build_env = VirtualBuildEnv(self)
+        virtual_build_env.generate()
+
+        tc = AutotoolsToolchain(self)
+        yes_no = lambda v: "yes" if v else "no"
+        tc.configure_args.extend([
+            f"--enable-python={yes_no(not self.options.disable_python)}",
+            "--datarootdir=${prefix}/res",
+            "--datadir=${prefix}/res",
+        ])
+        tc.generate()
+
+    def build(self):
+        apply_conandata_patches(self)
+        autotools = Autotools(self)
+        if Version(self.version) > "1.2.4":
+            autotools.autoreconf()
+            autotools.configure()
+            autotools.make()
+        else:
+            with chdir(self, self.source_folder):
+                autotools.autoreconf()
+                autotools.configure()
+                autotools.make()
+
+    def package(self):
+        copy(self, "COPYING", src=self.source_folder, dst=os.path.join(self.package_folder, "licenses"))
+        if Version(self.version) > "1.2.4":
+            autotools = Autotools(self)
+            autotools.install()
+        else:
+            with chdir(self, self.source_folder):
+                autotools = Autotools(self)
+                autotools.install()
+        rmdir(self, os.path.join(self.package_folder, "lib", "pkgconfig"))
+        rm(self, "*.la", os.path.join(self.package_folder, "lib"))
+
+    def package_info(self):
+        self.cpp_info.set_property("cmake_find_mode", "both")
+        self.cpp_info.set_property("cmake_file_name", "ALSA")
+        self.cpp_info.set_property("cmake_target_name", "ALSA::ALSA")
+        self.cpp_info.set_property("pkg_config_name", "alsa")
+        self.cpp_info.libs = ["asound"]
+        self.cpp_info.resdirs = ["res"]
+        self.cpp_info.system_libs = ["dl", "m", "rt", "pthread"]
+        alsa_config_dir = os.path.join(self.package_folder, "res", "alsa")
+        self.runenv_info.define_path("ALSA_CONFIG_DIR", alsa_config_dir)
+
+        # TODO: to remove in conan v2?
+        self.cpp_info.names["cmake_find_package"] = "ALSA"
+        self.cpp_info.names["cmake_find_package_multi"] = "ALSA"
+        self.cpp_info.names["pkg_config"] = "alsa"
+        self.env_info.ALSA_CONFIG_DIR = alsa_config_dir