librsvg: add legacy C version

recipes/librsvg/config.yml

@@ -0,0 +1,3 @@
+versions:
+  "2.40.21":
+    folder: pre-2.41

recipes/librsvg/pre-2.41/conandata.yml

@@ -0,0 +1,9 @@
+sources:
+  "2.40.21":
+    url: "https://download.gnome.org/sources/librsvg/2.40/librsvg-2.40.21.tar.xz"
+    sha256: "f7628905f1cada84e87e2b14883ed57d8094dca3281d5bcb24ece4279e9a92ba"
+patches:
+  "2.40.21":
+    - patch_file: "patches/fix-libxml-compatibility.patch"
+      patch_description: "Fix a minor incompatibility with newer libxml2 versions"
+      patch_type: "portability"

recipes/librsvg/pre-2.41/conanfile.py

@@ -0,0 +1,158 @@
+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.env import Environment, VirtualBuildEnv, VirtualRunEnv
+from conan.tools.files import apply_conandata_patches, copy, export_conandata_patches, get, rm, replace_in_file, save, rmdir
+from conan.tools.gnu import Autotools, AutotoolsDeps, AutotoolsToolchain, PkgConfigDeps
+from conan.tools.layout import basic_layout
+from conan.tools.microsoft import is_msvc, unix_path
+
+required_conan_version = ">=1.54.0"
+
+
+class LibrsvgConan(ConanFile):
+    name = "librsvg"
+    description = "A library to render SVG images to Cairo surfaces."
+    license = "LGPL-2.0-or-later"
+    homepage = "https://gitlab.gnome.org/GNOME/librsvg"
+    url = "https://github.com/conan-io/conan-center-index"
+    topics = ("svg", "vector-graphics", "cairo", "gnome")
+    package_type = "library"
+    settings = "os", "arch", "compiler", "build_type"
+    options = {
+        "shared": [True, False],
+        "fPIC": [True, False],
+        "tools": [True, False],
+    }
+    default_options = {
+        "shared": False,
+        "fPIC": True,
+        "tools": True,
+    }
+
+    @property
+    def _settings_build(self):
+        return getattr(self, "settings_build", self.settings)
+
+    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):
+        basic_layout(self, src_folder="src")
+
+    def requirements(self):
+        self.requires("glib/2.78.3", transitive_headers=True, transitive_libs=True)
+        self.requires("fontconfig/2.15.0")
+        self.requires("cairo/1.18.0", transitive_headers=True, transitive_libs=True)
+        self.requires("pango/1.54.0")
+        self.requires("libxml2/[>=2.12.5 <3]")
+        self.requires("gdk-pixbuf/2.42.10", transitive_headers=True, transitive_libs=True)
+        self.requires("libcroco/0.6.13")
+
+    def validate(self):
+        if not self.dependencies["pango"].options.with_cairo:
+            raise ConanInvalidConfiguration("librsvg requires -o pango/*:with_cairo=True")
+        if not self.dependencies["pango"].options.with_freetype:
+            raise ConanInvalidConfiguration("librsvg requires -o pango/*:with_freetype=True")
+
+    def build_requirements(self):
+        self.tool_requires("libtool/2.4.7")
+        if not self.conf.get("tools.gnu:pkg_config", check_type=str):
+            self.tool_requires("pkgconf/[>=2.2 <3]")
+        if self._settings_build.os == "Windows":
+            self.win_bash = True
+            if not self.conf.get("tools.microsoft.bash:path", check_type=str):
+                self.tool_requires("msys2/cci.latest")
+        if is_msvc(self):
+            self.tool_requires("automake/1.16.5")
+
+    def source(self):
+        get(self, **self.conan_data["sources"][self.version], strip_root=True)
+
+    def generate(self):
+        VirtualBuildEnv(self).generate()
+        if not cross_building(self):
+            VirtualRunEnv(self).generate(scope="build")
+
+        tc = AutotoolsToolchain(self)
+        def yes_no(v): return "yes" if v else "no"
+        tc.configure_args.extend([
+            "--disable-gtk-doc",
+            "--disable-introspection",  # fails to find Glib-2.0.gir without patching
+            "--disable-pixbuf-loader",  # installed in a wrong location
+            f"--enable-debug={yes_no(self.settings.build_type == 'Debug')}",
+            f"--enable-tools={yes_no(self.options.tools)}",
+        ])
+        tc.generate()
+
+        deps = PkgConfigDeps(self)
+        deps.generate()
+
+        if is_msvc(self):
+            env = Environment()
+            automake_conf = self.dependencies.build["automake"].conf_info
+            compile_wrapper = unix_path(self, automake_conf.get("user.automake:compile-wrapper", check_type=str))
+            ar_wrapper = unix_path(self, automake_conf.get("user.automake:lib-wrapper", check_type=str))
+            env.define("CC", f"{compile_wrapper} cl -nologo")
+            env.define("CXX", f"{compile_wrapper} cl -nologo")
+            env.define("LD", "link -nologo")
+            env.define("AR", f"{ar_wrapper} lib")
+            env.define("NM", "dumpbin -symbols")
+            env.define("OBJDUMP", ":")
+            env.define("RANLIB", ":")
+            env.define("STRIP", ":")
+            env.vars(self).save_script("conanbuild_msvc")
+
+    def _patch_sources(self):
+        apply_conandata_patches(self)
+        # Force disable docs
+        replace_in_file(self, os.path.join(self.source_folder, "configure.ac"),
+                        "GTK_DOC_CHECK(", "# GTK_DOC_CHECK(")
+        save(self, os.path.join(self.source_folder, "doc", "Makefile.am"), "")
+
+    def build(self):
+        self._patch_sources()
+        autotools = Autotools(self)
+        autotools.autoreconf()
+        autotools.configure()
+        autotools.make()
+
+    def package(self):
+        copy(self, "LICENSE", self.source_folder, os.path.join(self.package_folder, "licenses"))
+        autotools = Autotools(self)
+        autotools.install()
+        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"))
+        fix_apple_shared_install_name(self)
+
+    def package_info(self):
+        self.cpp_info.set_property("pkg_config_name", "librsvg-2.0")
+        self.cpp_info.set_property("pkg_config_custom_content", "svgz_supported=true\ncss_supported=true\n")
+        self.cpp_info.includedirs.append(os.path.join("include", "librsvg-2.0"))
+        self.cpp_info.libs = ["librsvg-2"]
+        self.cpp_info.requires = [
+            "cairo::cairo_",
+            "cairo::cairo-png",
+            "fontconfig::fontconfig",
+            "gdk-pixbuf::gdk-pixbuf",
+            "glib::gio-2.0",
+            "glib::glib-2.0",
+            "libxml2::libxml2",
+            "pango::pangocairo",
+            "pango::pangoft2",
+            "libcroco::libcroco",
+        ]

recipes/librsvg/pre-2.41/patches/fix-libxml-compatibility.patch

@@ -0,0 +1,14 @@
+Fixes
+error: incompatible function pointer types assigning to 'xmlStructuredErrorFunc' (aka 'void (*)(void *, const struct _xmlError *)') from 'void (void *, xmlErrorPtr)' (aka 'void (void *, struct _xmlError *)') [-Wincompatible-function-pointer-types]
+  866 |     handler.serror = rsvg_xml_noerror;
+--- a/rsvg-css.c
++++ b/rsvg-css.c
+@@ -839,7 +839,7 @@
+ }
+
+ static void
+-rsvg_xml_noerror (void *data, xmlErrorPtr error)
++rsvg_xml_noerror (void *data, const struct _xmlError *error)
+ {
+ }
+

recipes/librsvg/pre-2.41/test_package/conanfile.py

@@ -0,0 +1,32 @@
+from conan import ConanFile
+from conan.tools.build import can_run
+from conan.tools.layout import basic_layout
+from conan.tools.meson import Meson
+import os
+
+
+class TestPackageConan(ConanFile):
+    settings = "os", "arch", "compiler", "build_type"
+    generators = "PkgConfigDeps", "MesonToolchain", "VirtualRunEnv", "VirtualBuildEnv"
+    test_type = "explicit"
+
+    def layout(self):
+        basic_layout(self)
+
+    def requirements(self):
+        self.requires(self.tested_reference_str)
+
+    def build_requirements(self):
+        self.tool_requires("meson/[>=1.2.3 <2]")
+        if not self.conf.get("tools.gnu:pkg_config", default=False, check_type=str):
+            self.tool_requires("pkgconf/[>=2.2 <3]")
+
+    def build(self):
+        meson = Meson(self)
+        meson.configure()
+        meson.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/librsvg/pre-2.41/test_package/meson.build

@@ -0,0 +1,5 @@
+project('test_package', 'c')
+package_dep = dependency('librsvg-2.0')
+executable('test_package',
+            sources : ['test_package.c'],
+            dependencies : [package_dep])

recipes/librsvg/pre-2.41/test_package/test_package.c

@@ -0,0 +1,6 @@
+#include <librsvg/rsvg.h>
+
+int main() {
+    GError *error = NULL;
+    rsvg_handle_new_from_file("", &error);
+}