matplotlib-cpp: new recipe

recipes/matplotlib-cpp/all/conandata.yml

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+sources:
+  "cci.20210423":
+    url: "https://codeload.github.com/lava/matplotlib-cpp/zip/ef0383f1315d32e0156335e10b82e90b334f6d9f"
+    sha256: "d061c56d53cc2355e1543198a3899a361495f5c8a72b938204a5307614ca883f"

recipes/matplotlib-cpp/all/conanfile.py

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+import os
+
+from conan import ConanFile
+from conan.tools.build import check_min_cppstd
+from conan.tools.files import copy, get
+from conan.tools.layout import basic_layout
+
+required_conan_version = ">=1.53.0"
+
+
+class MatplotlibCppConan(ConanFile):
+    name = "matplotlib-cpp"
+    description = "Extremely simple yet powerful header-only C++ plotting library built on the popular matplotlib"
+    license = "MIT"
+    url = "https://github.com/conan-io/conan-center-index"
+    homepage = "https://github.com/lava/matplotlib-cpp"
+
+    topics = ("plotting", "matplotlib", "visualization")
+    package_type = "header-library"
+    settings = "os", "arch", "compiler", "build_type"
+
+    @property
+    def _min_cppstd(self):
+        return 11
+
+    def layout(self):
+        basic_layout(self, src_folder="src")
+
+    def package_id(self):
+        self.info.clear()
+
+    def validate(self):
+        if self.settings.compiler.cppstd:
+            check_min_cppstd(self, self._min_cppstd)
+
+    def source(self):
+        get(self, **self.conan_data["sources"][self.version], strip_root=True)
+
+    def package(self):
+        copy(self, "LICENSE", self.source_folder, os.path.join(self.package_folder, "licenses"))
+        copy(self, "matplotlibcpp.h", self.source_folder, os.path.join(self.package_folder, "include"))
+
+    def package_info(self):
+        # https://github.com/lava/matplotlib-cpp/blob/master/cmake/matplotlib_cppConfig.cmake.in
+        self.cpp_info.set_property("cmake_file_name", "matplotlib_cpp")
+        self.cpp_info.set_property("cmake_target_name", "matplotlib_cpp::matplotlib_cpp")
+
+        self.cpp_info.bindirs = []
+        self.cpp_info.libdirs = []

recipes/matplotlib-cpp/all/test_package/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.15)
+project(test_package LANGUAGES CXX)
+
+find_package(matplotlib_cpp REQUIRED CONFIG)
+find_package(Python3 COMPONENTS Interpreter Development REQUIRED)
+find_package(Python3 COMPONENTS NumPy)
+
+add_executable(${PROJECT_NAME} test_package.cpp)
+target_link_libraries(${PROJECT_NAME} PRIVATE matplotlib_cpp::matplotlib_cpp)
+target_compile_features(${PROJECT_NAME} PRIVATE cxx_std_11)
+
+target_link_libraries(${PROJECT_NAME} PRIVATE
+  Python3::Python
+  Python3::Module
+)
+if(Python3_NumPy_FOUND)
+  target_link_libraries(${PROJECT_NAME} PRIVATE
+    Python3::NumPy
+  )
+else()
+  target_compile_definitions(${PROJECT_NAME} PRIVATE WITHOUT_NUMPY)
+endif()

recipes/matplotlib-cpp/all/test_package/conanfile.py

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+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)
+
+    def layout(self):
+        cmake_layout(self)
+
+    def build(self):
+        cmake = CMake(self)
+        cmake.configure()
+        cmake.build()
+
+    def test(self):
+        if can_run(self):
+            try:
+                import matplotlib
+                bin_path = os.path.join(self.cpp.build.bindir, "test_package")
+                self.run(bin_path, env="conanrun")
+            except ImportError:
+                self.output.warning("matplotlib not found, skipping test")

recipes/matplotlib-cpp/all/test_package/test_package.cpp

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+#include <matplotlibcpp.h>
+
+#include <cmath>
+#include <vector>
+
+namespace plt = matplotlibcpp;
+
+int main()
+{
+    // u and v are respectively the x and y components of the arrows we're plotting
+    std::vector<int> x, y, u, v;
+    for (int i = -5; i <= 5; i++) {
+        for (int j = -5; j <= 5; j++) {
+            x.push_back(i);
+            u.push_back(-i);
+            y.push_back(j);
+            v.push_back(-j);
+        }
+    }
+    plt::quiver(x, y, u, v);
+    plt::save("test.png");
+
+    // The interpreter segfaults if it is not shut down explicitly
+    // https://github.com/lava/matplotlib-cpp/issues/248
+    plt::detail::_interpreter::kill();
+}

recipes/matplotlib-cpp/config.yml

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+versions:
+  "cci.20210423":
+    folder: all