fuzztest: new recipe

recipes/fuzztest/all/conandata.yml

@@ -0,0 +1,4 @@
+sources:
+  "cci.20240305":
+    url: "https://github.com/google/fuzztest/archive/e317d5277e34948ae7048cb5e48309e0288e8df3.tar.gz"
+    sha256: "cd13071a90258e9017122903ef1cd61228d8beb3b99d15bd5c60f74379d2681e"

recipes/fuzztest/all/conanfile.py

@@ -0,0 +1,125 @@
+from conan import ConanFile
+from conan.errors import ConanInvalidConfiguration
+from conan.tools.build import check_min_cppstd
+from conan.tools.cmake import CMake, CMakeDeps, CMakeToolchain, cmake_layout
+from conan.tools.files import copy, get, save
+import os
+import yaml
+
+required_conan_version = ">=1.53.0"
+
+
+class FuzztestConan(ConanFile):
+    name = "fuzztest"
+    description = "A C++ testing framework for writing and executing fuzz tests"
+    license = "Apache-2.0"
+    url = "https://github.com/conan-io/conan-center-index"
+    homepage = "https://github.com/google/fuzztest"
+    topics = ("fuzzing", "testing")
+    package_type = "library"
+    settings = "os", "arch", "compiler", "build_type"
+    options = {
+        "shared": [True, False],
+        "fPIC": [True, False],
+    }
+    default_options = {
+        "shared": False,
+        "fPIC": True,
+    }
+
+    @property
+    def _min_cppstd(self):
+        return 17
+
+    def export(self):
+        copy(self, f"_package_info-{self.version}.yml",
+             os.path.join(self.recipe_folder, "package_info"),
+             os.path.join(self.export_folder))
+
+    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")
+
+    def layout(self):
+        cmake_layout(self, src_folder="src")
+
+    def requirements(self):
+        self.requires("abseil/20240116.1@local/beta", transitive_headers=True, force=True) # Waiting on PR
+        self.requires("antlr4-cppruntime/4.13.1")
+        # TODO: Maybe an option to disable GTest? In case user wants to use another testing framework
+        self.requires("gtest/1.14.0", transitive_headers=True)
+        self.requires("re2/20240301@local/beta", transitive_headers=True, force=True) # Waiting on PR, uses internal headers
+
+    def validate(self):
+        if self.settings.compiler.cppstd:
+            check_min_cppstd(self, self._min_cppstd)
+
+        # https://github.com/google/fuzztest/blob/main/doc/quickstart-cmake.md#prerequisites
+        # Clang (with libc++) verifed working as far back as clang 12.
+        if self.settings.os != "Linux":
+            raise ConanInvalidConfiguration(f"{self.ref} only supports Linux")
+        if self.settings.compiler != "clang":
+            raise ConanInvalidConfiguration(f"{self.ref} only supports Clang")
+
+    def source(self):
+        get(self, **self.conan_data["sources"][self.version], strip_root=True)
+
+    def generate(self):
+        tc = CMakeToolchain(self)
+        tc.generate()
+        tc = CMakeDeps(self)
+        tc.generate()
+
+    def _fetchcontent_to_findpackage(self):
+        # Replace the entirety of the FetchContent-based dependency fetching with find_packages
+        save(self, os.path.join(self.source_folder, "cmake", "BuildDependencies.cmake"), """
+find_package(re2 REQUIRED CONFIG)
+find_package(absl REQUIRED CONFIG)
+find_package(GTest REQUIRED CONFIG)
+find_package(antlr4-runtime REQUIRED CONFIG)
+""")
+
+    def build(self):
+        self._fetchcontent_to_findpackage()
+        cmake = CMake(self)
+        cmake.configure()
+        cmake.build()
+
+    def package(self):
+        copy(self, "LICENSE", self.source_folder, os.path.join(self.package_folder, "licenses"))
+        copy(self, "*.h", os.path.join(self.source_folder, "fuzztest"),
+             os.path.join(self.package_folder, "include", "fuzztest"))
+        for ext in (".so", ".lib", ".a", ".dylib", ".bc"):
+            copy(self, f"*{ext}", self.build_folder, os.path.join(self.package_folder, "lib"), keep_path=False)
+
+        copy(self, "AddFuzzTest.cmake", os.path.join(self.source_folder, "cmake"), os.path.join(self.package_folder, "lib", "cmake"))
+        copy(self, "FuzzTestFlagSetup.cmake", os.path.join(self.source_folder, "cmake"), os.path.join(self.package_folder, "lib", "cmake"))
+
+    def package_info(self):
+        info_path = os.path.join(self.recipe_folder, f"_package_info-{self.version}.yml")
+        info = yaml.safe_load(open(info_path, "r"))
+
+        # Fuzztest does not document a way to consume with find_package, so stick with the default name.
+
+        # For functions like fuzztest_setup_fuzzing_flags()
+        self.cpp_info.set_property("cmake_build_modules", [
+            os.path.join("lib", "cmake", "AddFuzzTest.cmake"),
+            os.path.join("lib", "cmake", "FuzzTestFlagSetup.cmake"),
+        ])
+
+        # TODO: Used, but not linked to anything?
+        self.cpp_info.components["_hidden"].requires = ["antlr4-cppruntime::antlr4-cppruntime"]
+        self.cpp_info.components["_hidden"].libdirs = []
+        self.cpp_info.components["_hidden"].includedirs = []
+
+        for name, data in info.items():
+            component = self.cpp_info.components[name]
+            if not data["header_only"]:
+                component.libs = [f"fuzztest_{name}"]
+                component.requires = data["deps"]
+            else:
+                component.libdirs = []