libmagic: add new recipe

recipes/libmagic/all/conandata.yml

@@ -0,0 +1,4 @@
+sources:
+  "5.45":
+    url: "https://github.com/file/file/archive/FILE5_45.tar.gz"
+    sha256: "28c01a5ef1a127ef71758222ca019ba6c6bfa4a8fe20c2b525ce75943ee9da3c"

recipes/libmagic/all/conanfile.py

@@ -0,0 +1,103 @@
+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.env import VirtualBuildEnv, VirtualRunEnv
+from conan.tools.files import copy, get, rm, rmdir, rename
+from conan.tools.gnu import Autotools, AutotoolsToolchain
+from conan.tools.layout import basic_layout
+import os
+
+required_conan_version = ">=1.52.0"
+
+class LibmagicConan(ConanFile):
+    name = "libmagic"
+    description = "Magic number recognition library - detect files with data in particular fixed formats."
+    license = "DocumentRef-COPYING:LicenseRef-BSD-2-Clause-File"  # Modified BSD 2-Clause that states no restrictions on US export
+    homepage = "https://github.com/file/file"
+    url = "https://github.com/conan-io/conan-center-index"
+    topics = "magic", "file format"
+
+    package_type = "library"
+    settings = "os", "arch", "compiler", "build_type"
+    options = {
+        "shared": [True, False],
+        "fPIC": [True, False],
+    }
+    default_options = {
+        "shared": False,
+        "fPIC": True,
+    }
+
+    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.libcxx")
+        self.settings.rm_safe("compiler.cppstd")
+
+    def layout(self):
+        basic_layout(self, src_folder="src")
+
+    def requirements(self):
+        self.requires("bzip2/1.0.8")
+        self.requires("lzip/1.23")
+        self.requires("xz_utils/5.4.4")
+        self.requires("zlib/[>=1.2.11 <2]")
+        self.requires("zstd/1.5.5")
+
+    def validate(self):
+        if self.settings.os == "Windows":
+            raise ConanInvalidConfiguration("Windows is not supported yet")
+        if cross_building(self):
+            # TODO: Cross-compilation requires a build-context version of 'file' executable to be available.
+            # It might be possible to build the project for the 'build' platform first to make it work.
+            raise ConanInvalidConfiguration("Cross-compilation is not supported yet")
+
+    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):
+        env = VirtualBuildEnv(self)
+        env.generate()
+        if not cross_building(self):
+            env = VirtualRunEnv(self)
+            env.generate(scope="build")
+        tc = AutotoolsToolchain(self)
+        # Set from 'auto' to explicitly enabled
+        tc.configure_args.append(f"--enable-bzlib={self.dependencies['bzip2'].package_folder}")
+        tc.configure_args.append(f"--enable-lzlib={self.dependencies['lzip'].package_folder}")
+        tc.configure_args.append(f"--enable-xzlib={self.dependencies['xz_utils'].package_folder}")
+        tc.configure_args.append(f"--enable-zlib={self.dependencies['zlib'].package_folder}")
+        tc.configure_args.append(f"--enable-zstdlib={self.dependencies['zstd'].package_folder}")
+        tc.generate()
+
+    def build(self):
+        autotools = Autotools(self)
+        autotools.autoreconf()
+        autotools.configure()
+        autotools.make()
+
+    def package(self):
+        copy(self, "COPYING", dst=os.path.join(self.package_folder, "licenses"), src=self.source_folder)
+        autotools = Autotools(self)
+        autotools.install()
+        fix_apple_shared_install_name(self)
+        rename(self, os.path.join(self.package_folder, "share", "misc"),
+               os.path.join(self.package_folder, "res"))
+        rm(self, "*.la", os.path.join(self.package_folder, "lib"))
+        rmdir(self, os.path.join(self.package_folder, "lib", "pkgconfig"))
+        rmdir(self, os.path.join(self.package_folder, "share"))
+
+    def package_info(self):
+        self.cpp_info.set_property("pkg_config_name",  "libmagic")
+        self.cpp_info.libs = ["magic"]
+        self.runenv_info.define_path("MAGIC", os.path.join(self.package_folder, "res", "magic.mgc"))
+        if self.settings.os in ["Linux", "FreeBSD"]:
+            self.cpp_info.system_libs.append("m")

recipes/libmagic/all/test_package/CMakeLists.txt

@@ -0,0 +1,7 @@
+cmake_minimum_required(VERSION 3.15)
+project(test_package C)
+
+find_package(libmagic REQUIRED CONFIG)
+
+add_executable(${PROJECT_NAME} test_package.c)
+target_link_libraries(${PROJECT_NAME} PRIVATE libmagic::libmagic)

recipes/libmagic/all/test_package/conanfile.py

@@ -0,0 +1,27 @@
+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", "VirtualRunEnv"
+    test_type = "explicit"
+
+    def requirements(self):
+        self.requires(self.tested_reference_str, run=True)
+
+    def layout(self):
+        cmake_layout(self)
+
+    def build(self):
+        cmake = CMake(self)
+        cmake.configure()
+        cmake.build()
+
+    def test(self):
+        if can_run(self):
+            self.run("file --version", env="conanrun")
+            bin_path = os.path.join(self.cpp.build.bindir, "test_package")
+            self.run(bin_path, env="conanrun")

recipes/libmagic/all/test_package/test_package.c

@@ -0,0 +1,31 @@
+#include <magic.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(int argc, char **argv)
+{
+    const char *magic_full;
+    magic_t magic_cookie;
+
+    magic_cookie = magic_open(MAGIC_MIME);
+
+    if (magic_cookie == NULL) {
+        printf("unable to initialize magic library\n");
+        return 1;
+    }
+
+    char *mgc_path = getenv("MAGIC");
+    printf("Loading default magic database from %s\n", mgc_path);
+
+    if (magic_load(magic_cookie, NULL) != 0) {
+        printf("cannot load magic database - %s\n", magic_error(magic_cookie));
+        magic_close(magic_cookie);
+        return 1;
+    }
+
+    magic_full = magic_file(magic_cookie, argv[0]);
+    printf("%s\n", magic_full);
+    magic_close(magic_cookie);
+    return 0;
+}

recipes/libmagic/config.yml

@@ -0,0 +1,3 @@
+versions:
+  "5.45":
+    folder: all