(conan-io#16469) osqp: add recipe

recipes/osqp/all/conandata.yml

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+sources:
+  "0.6.2":
+    url: "https://github.com/osqp/osqp/releases/download/v0.6.2/complete_sources.tar.gz"
+    sha256: "0a7ade2fa19f13e13bc12f6ea0046ef764049023efb4997a4e72a76534f623ec"

recipes/osqp/all/conanfile.py

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+from conan import ConanFile
+from conan.tools.files import get, copy, rm, rmdir
+from conan.tools.cmake import CMake, CMakeToolchain, cmake_layout
+import os
+
+required_conan_version = ">=1.53.0"
+
+class OsqpConan(ConanFile):
+    name = "osqp"
+    package_type = "library"
+    description = "The OSQP (Operator Splitting Quadratic Program) solver is a numerical optimization package."
+    license = "Apache-2.0"
+    url = "https://github.com/conan-io/conan-center-index"
+    homepage = "https://osqp.org/"
+    topics = ("machine-learning", "control", "optimization", "svm", "solver", "lasso", "portfolio-optimization",
+              "numerical-optimization", "quadratic-programming", "convex-optimization", "model-predictive-control")
+    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):
+        cmake_layout(self, src_folder="src")
+
+    def source(self):
+        get(self, **self.conan_data["sources"][self.version], strip_root=True)
+
+    def generate(self):
+        tc = CMakeToolchain(self)
+        tc.variables['UNITTESTS'] = not self.conf.get("tools.build:skip_test", default=True, check_type=bool)
+        tc.variables["PRINTING"] = True
+        tc.variables["PROFILING"] = True
+        tc.variables["CTRLC"] = True
+        tc.variables["DFLOAT"] = False
+        tc.variables["DLONG"] = True
+        tc.variables["COVERAGE"] = False
+        tc.variables["ENABLE_MKL_PARDISO"] = True
+        tc.generate()
+
+    def build(self):
+        cmake = CMake(self)
+        cmake.configure()
+        cmake.build()
+
+    def package(self):
+        copy(self, pattern="LICENSE", dst=os.path.join(self.package_folder, "licenses"), src=self.source_folder)
+        cmake = CMake(self)
+        cmake.install()
+
+        if self.settings.os == "Windows":
+            if self.options.shared:
+                rm(self, "qdldl.dll", os.path.join(self.package_folder, "bin"))
+            else:
+                rmdir(self, os.path.join(self.package_folder, "bin"))
+        else:
+            if self.options.shared:
+                rm(self, "*.a", os.path.join(self.package_folder, "lib"))
+            else:
+                rm(self, "*.so", os.path.join(self.package_folder, "lib"))
+                rm(self, "*.dylib", os.path.join(self.package_folder, "lib"))
+
+        rmdir(self, os.path.join(self.package_folder, "lib", "cmake"))
+        rmdir(self, os.path.join(self.package_folder, "include", "qdldl"))
+        rm(self, "*qdldl.*", os.path.join(self.package_folder, "lib"))
+
+    def package_info(self):
+        self.cpp_info.set_property("cmake_file_name", "osqp")
+        self.cpp_info.set_property("cmake_target_name", "osqp::osqp")
+        self.cpp_info.libs = ["osqp"]
+
+        if self.settings.os in ["Linux", "FreeBSD"]:
+            self.cpp_info.system_libs.append("m")
+            self.cpp_info.system_libs.append("rt")
+            self.cpp_info.system_libs.append("dl")
+
+        # TODO: to remove in conan v2 once cmake_find_package_* generators removed
+        self.cpp_info.filenames["cmake_find_package"] = "osqp"
+        self.cpp_info.filenames["cmake_find_package_multi"] = "osqp"
+        self.cpp_info.names["cmake_find_package"] = "osqp"
+        self.cpp_info.names["cmake_find_package_multi"] = "osqp"

recipes/osqp/all/test_package/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.8)
+
+project(test_package CXX)
+
+find_package(osqp REQUIRED CONFIG)
+
+add_executable(${PROJECT_NAME} test_package.cpp)
+target_link_libraries(${PROJECT_NAME} PRIVATE osqp::osqp)

recipes/osqp/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
+
+
+# It will become the standard on Conan 2.x
+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):
+            bin_path = os.path.join(self.cpp.build.bindirs[0], "test_package")
+            self.run(bin_path, env="conanrun")

recipes/osqp/all/test_package/test_package.cpp

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+/**
+ * Below is a demo copied from an upstream example code,
+ * It shows how to setup and solve an optimization problem.
+ * Source code: https://github.com/osqp/osqp/blob/master/examples/osqp_demo.c
+ * Problem definition: https://osqp.org/docs/examples/setup-and-solve.html
+*/
+#include "osqp/osqp.h"
+
+
+int main(void) {
+    // Load problem data
+    c_float P_x[3] = {4.0, 1.0, 2.0, };
+    c_int P_nnz = 3;
+    c_int P_i[3] = {0, 0, 1, };
+    c_int P_p[3] = {0, 1, 3, };
+    c_float q[2] = {1.0, 1.0, };
+    c_float A_x[4] = {1.0, 1.0, 1.0, 1.0, };
+    c_int A_nnz = 4;
+    c_int A_i[4] = {0, 1, 0, 2, };
+    c_int A_p[3] = {0, 2, 4, };
+    c_float l[3] = {1.0, 0.0, 0.0, };
+    c_float u[3] = {1.0, 0.7, 0.7, };
+    c_int n = 2;
+    c_int m = 3;
+
+    // Exitflag
+    c_int exitflag = 0;
+
+    // Workspace structures
+    OSQPWorkspace *work;
+    OSQPSettings  *settings = (OSQPSettings *)c_malloc(sizeof(OSQPSettings));
+    OSQPData      *data     = (OSQPData *)c_malloc(sizeof(OSQPData));
+
+    // Populate data
+    if (data) {
+        data->n = n;
+        data->m = m;
+        data->P = csc_matrix(data->n, data->n, P_nnz, P_x, P_i, P_p);
+        data->q = q;
+        data->A = csc_matrix(data->m, data->n, A_nnz, A_x, A_i, A_p);
+        data->l = l;
+        data->u = u;
+    }
+
+    // Define solver settings as default
+    if (settings) {
+        osqp_set_default_settings(settings);
+        settings->alpha = 1.0; // Change alpha parameter
+    }
+
+    // Setup workspace
+    exitflag = osqp_setup(&work, data, settings);
+
+    // Solve Problem
+    osqp_solve(work);
+
+    // Cleanup
+    osqp_cleanup(work);
+    if (data) {
+        if (data->A) c_free(data->A);
+        if (data->P) c_free(data->P);
+        c_free(data);
+    }
+    if (settings) c_free(settings);
+
+    return exitflag;
+
+    return EXIT_SUCCESS;
+}

recipes/osqp/all/test_v1_package/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.1)
+project(test_package)
+
+include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
+conan_basic_setup(TARGETS)
+
+add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/../test_package/
+                 ${CMAKE_CURRENT_BINARY_DIR}/test_package/)

recipes/osqp/all/test_v1_package/conanfile.py

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+from conans import ConanFile, CMake
+from conan.tools.build import cross_building
+import os
+
+
+# legacy validation with Conan 1.x
+class TestPackageV1Conan(ConanFile):
+    settings = "os", "arch", "compiler", "build_type"
+    generators = "cmake", "cmake_find_package_multi"
+
+    def build(self):
+        cmake = CMake(self)
+        cmake.configure()
+        cmake.build()
+
+    def test(self):
+        if not cross_building(self):
+            bin_path = os.path.join("bin", "test_package")
+            self.run(bin_path, run_environment=True)

recipes/osqp/config.yml

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+versions:
+  "0.6.2":
+    folder: all