[DO-973] harfbuzz package (!10)

Co-authored-by: aleksandr.vodyanov <aleksandr.vodyanov@avroid.tech>
Reviewed-on: https://git.avroid.tech/Conan/conan_build/pulls/10

recipes/flex/all/conanfile.py

@@ -0,0 +1,99 @@
+import os
+
+from conan import ConanFile
+from conan.errors import ConanInvalidConfiguration
+from conan.tools.apple import fix_apple_shared_install_name
+from conan.tools.build import cross_building
+from conan.tools.files import get, rmdir, copy, rm, export_conandata_patches, apply_conandata_patches
+from conan.tools.gnu import AutotoolsToolchain, Autotools
+
+required_conan_version = ">=1.53.0"
+
+
+class FlexConan(ConanFile):
+    name = "flex"
+    url = "https://github.com/conan-io/conan-center-index"
+    homepage = "https://github.com/westes/flex"
+    description = "Flex, the fast lexical analyzer generator"
+    topics = ("lex", "lexer", "lexical analyzer generator")
+    license = "BSD-2-Clause"
+
+    settings = "os", "arch", "compiler", "build_type"
+    options = {
+        "shared": [True, False],
+        "fPIC": [True, False],
+    }
+    default_options = {
+        "shared": False,
+        "fPIC": True,
+    }
+
+    def source(self):
+        get(self, **self.conan_data["sources"][self.version], strip_root=True)
+
+    def export_sources(self):
+        export_conandata_patches(self)
+
+    def requirements(self):
+        # Flex requires M4 to be compiled. If consumer does not have M4
+        # installed, Conan will need to know that Flex requires it.
+        self.requires("m4/1.4.19")
+
+    def build_requirements(self):
+        self.tool_requires("m4/1.4.19")
+        if hasattr(self, "settings_build") and cross_building(self):
+            self.tool_requires(f"{self.name}/{self.version}")
+
+    def validate(self):
+        if self.settings.os == "Windows":
+            raise ConanInvalidConfiguration("Flex package is not compatible with Windows. "
+                                            "Consider using winflexbison instead.")
+
+    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 generate(self):
+        at = AutotoolsToolchain(self)
+        at.configure_args.extend([
+            "--disable-nls",
+            "--disable-bootstrap",
+            "HELP2MAN=/bin/true",
+            "M4=m4",
+            # https://github.com/westes/flex/issues/247
+            "ac_cv_func_malloc_0_nonnull=yes", "ac_cv_func_realloc_0_nonnull=yes",
+            # https://github.com/easybuilders/easybuild-easyconfigs/pull/5792
+            "ac_cv_func_reallocarray=no",
+        ])
+        at.generate()
+
+    def build(self):
+        apply_conandata_patches(self)
+        autotools = Autotools(self)
+        autotools.configure()
+        autotools.make()
+
+    def package(self):
+        copy(self, "COPYING", src=self.source_folder, dst=os.path.join(self.package_folder, "licenses"))
+        autotools = Autotools(self)
+        autotools.install()
+        rmdir(self, os.path.join(self.package_folder, "share"))
+        rm(self, "*.la", os.path.join(self.package_folder, "lib"))
+        fix_apple_shared_install_name(self)
+
+    def package_info(self):
+        self.cpp_info.libs = ["fl"]
+        self.cpp_info.system_libs = ["m"]
+        # Avoid CMakeDeps messing with Conan targets
+        self.cpp_info.set_property("cmake_find_mode", "none")
+
+        bindir = os.path.join(self.package_folder, "bin")
+        self.output.info("Appending PATH environment variable: {}".format(bindir))
+        self.env_info.PATH.append(bindir)
+
+        lex_path = os.path.join(bindir, "flex").replace("\\", "/")
+        self.output.info("Setting LEX environment variable: {}".format(lex_path))
+        self.env_info.LEX = lex_path