coz: migrate to Conan v2

recipes/coz/all/conanfile.py

@@ -1,61 +1,76 @@
 import os
-from conans import ConanFile, CMake, tools
-from conans.errors import ConanInvalidConfiguration
 
-required_conan_version = ">=1.33.0"
+from conan import ConanFile
+from conan.errors import ConanInvalidConfiguration
+from conan.tools.apple import is_apple_os
+from conan.tools.build import check_min_cppstd
+from conan.tools.cmake import CMake, CMakeDeps, CMakeToolchain, cmake_layout
+from conan.tools.files import get, rmdir
+from conan.tools.microsoft import is_msvc
+from conan.tools.scm import Version
+
+required_conan_version = ">=1.53.0"
 
 
 class CozConan(ConanFile):
     name = "coz"
-    description = """Causal profiler, uses performance experiments
-                     to predict the effect of optimizations"""
+    description = "Causal profiler, uses performance experiments to predict the effect of optimizations"
+    license = "BSD-2-Clause"
     url = "https://github.com/conan-io/conan-center-index"
     homepage = "http://coz-profiler.org"
-    license = "BSD-2-Clause"
-    topics = ("conan", "coz", "profiler", "causal")
+    topics = ("profiler", "causal")
 
+    package_type = "shared-library"
     settings = "os", "arch", "compiler", "build_type"
 
-    requires = "libelfin/0.3"
-    exports_sources = "CMakeLists.txt"
-    generators = "cmake", "cmake_find_package"
+    def layout(self):
+        cmake_layout(self, src_folder="src")
+
+    def package_id(self):
+        del self.info.settings.compiler
+        del self.info.settings.build_type
 
-    _source_subfolder = "source_subfolder"
+    def requirements(self):
+        self.requires("libelfin/0.3")
 
     def validate(self):
-        compiler = self.settings.compiler
-        compiler_version = tools.Version(self.settings.compiler.version)
-        if self.settings.os == "Macos" or compiler == "Visual Studio" or (
-                compiler == "gcc" and compiler_version < "5.0"):
-            raise ConanInvalidConfiguration(
-                "coz doesn't support compiler: {} on OS: {}.".format(
-                    self.settings.compiler, self.settings.os))
         if self.settings.compiler.cppstd:
-            tools.check_min_cppstd(self, "11")
+            check_min_cppstd(self, 11)
+        compiler_version = Version(self.settings.compiler.version)
+        if self.settings.compiler == "gcc" and compiler_version < "5.0":
+            raise ConanInvalidConfiguration("coz requires GCC >= 5.0")
+        if is_apple_os(self) or is_msvc(self):
+            raise ConanInvalidConfiguration(f"coz doesn't support {self.settings.os}.")
 
     def source(self):
-        tools.get(**self.conan_data["sources"][self.version],
-                  destination=self._source_subfolder, strip_root=True)
+        get(self, **self.conan_data["sources"][self.version], strip_root=True)
 
-    _cmake = None
-
-    def _configure_cmake(self):
-        if self._cmake:
-            return self._cmake
-        self._cmake = CMake(self)
-        self._cmake.configure()
-        return self._cmake
+    def generate(self):
+        tc = CMakeToolchain(self)
+        tc.generate()
+        deps = CMakeDeps(self)
+        deps.generate()
 
     def build(self):
-        cmake = self._configure_cmake()
+        cmake = CMake(self)
+        cmake.configure()
         cmake.build()
 
     def package(self):
-        cmake = self._configure_cmake()
+        cmake = CMake(self)
         cmake.install()
-        tools.rmdir(os.path.join(self.package_folder, "lib", "cmake"))
+        rmdir(self, os.path.join(self.package_folder, "lib", "cmake"))
 
     def package_info(self):
+        # https://github.com/plasma-umass/coz/#cmake
+        self.cpp_info.set_property("cmake_file_name", "coz-profiler")
+        self.cpp_info.set_property("cmake_target_name", "coz::coz")
+
+        self.cpp_info.libs = ["coz"]
+        if self.settings.os in ["Linux", "FreeBSD"]:
+            self.cpp_info.system_libs = ["m", "dl", "pthread", "rt"]
+
+        # TODO: to remove in conan v2 once cmake_find_package_* generators removed
         self.cpp_info.filenames["cmake_find_package"] = "coz-profiler"
         self.cpp_info.filenames["cmake_find_package_multi"] = "coz-profiler"
         self.cpp_info.names["cmake_find_package"] = "coz"

recipes/coz/all/test_package/CMakeLists.txt

@@ -1,8 +1,7 @@
-cmake_minimum_required(VERSION 3.1)
+cmake_minimum_required(VERSION 3.15)
 project(test_package C)
 
-include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
-conan_basic_setup()
+find_package(coz-profiler REQUIRED CONFIG)
 
 add_executable(${PROJECT_NAME} test_package.c)
-target_link_libraries(${PROJECT_NAME} ${CONAN_LIBS})
+target_link_libraries(${PROJECT_NAME} PRIVATE coz::coz)

recipes/coz/all/test_package/conanfile.py

@@ -1,19 +1,40 @@
-from conans import ConanFile, CMake, tools
 import os
 
+from conan import ConanFile
+from conan.tools.build import can_run
+from conan.tools.cmake import cmake_layout, CMake
+from conan.tools.files import chdir
+
 
 class TestPackageConan(ConanFile):
-    settings = "os", "compiler", "build_type", "arch"
-    generators = "cmake"
+    settings = "os", "arch", "compiler", "build_type"
+    generators = "CMakeDeps", "CMakeToolchain", "VirtualRunEnv"
+    test_type = "explicit"
+
+    def requirements(self):
+        self.requires(self.tested_reference_str)
+
+    def layout(self):
+        cmake_layout(self)
 
     def build(self):
-        cmake = CMake(self, build_type="RelWithDebInfo") # To work properly Coz tool requires debug information https://github.com/plasma-umass/coz
+        cmake = CMake(self)
         cmake.configure()
         cmake.build()
 
     def test(self):
-        if tools.cross_building(self.settings):
+        if self.settings.build_type not in ["Debug", "RelWithDebInfo"]:
+            self.output.info(f"Skipping coz test because {self.settings.build_type} "
+                             "build type does not contain debug information")
             return
-        bin_path = os.path.join("bin", "test_package")
-        self.run("coz run --- " + bin_path, run_environment=True)
-        print(open("profile.coz").read())
+        if self.settings.os == "Linux":
+            perf_even_paranoid = int(open("/proc/sys/kernel/perf_event_paranoid").read())
+            is_root = os.geteuid() == 0
+            if perf_even_paranoid > 2 and not is_root:
+                self.output.info("Skipping coz test because /proc/sys/kernel/perf_event_paranoid value "
+                                 f"must be <= 2 (currently {perf_even_paranoid}) and not running as root")
+                return
+        if can_run(self):
+            with chdir(self, self.cpp.build.bindir):
+                self.run("coz run --- ./test_package", env="conanrun")
+                print(open("profile.coz").read())