feat: add libmbus (#1172)

* feat: add libmbus

* Apply suggestions from code review

Co-Authored-By: Anonymous Maarten <madebr@users.noreply.github.com>

* chore: bump libmbus

* chore: remove pkgconfig

* Apply suggestions from code review

Co-Authored-By: Anonymous Maarten <madebr@users.noreply.github.com>

Co-authored-by: Anonymous Maarten <madebr@users.noreply.github.com>

recipes/libmbus/all/CMakeLists.txt

@@ -0,0 +1,7 @@
+cmake_minimum_required(VERSION 2.8.11)
+project(cmake_wrapper)
+
+include(conanbuildinfo.cmake)
+conan_basic_setup()
+
+add_subdirectory(source_subfolder)

recipes/libmbus/all/conandata.yml

@@ -0,0 +1,4 @@
+sources:
+  "20200424":
+    sha256: 0357e8795b1685a493399414a676827f4084fcee7806648af65e753ef5734b34
+    url: https://github.com/rscada/libmbus/archive/baf03e2a47500e088161471829a05a3f42f45a0b.zip

recipes/libmbus/all/conanfile.py

@@ -0,0 +1,80 @@
+import os
+from conans import CMake, ConanFile, tools
+from conans.errors import ConanInvalidConfiguration
+
+
+class LibMbusConan(ConanFile):
+    name = "libmbus"
+    license = "BSD-3-Clause"
+    homepage = "https://github.com/rscada/libmbus"
+    url = "https://github.com/conan-io/conan-center-index"
+    description = """Meter-bus library and utility programs"""
+    topics = "conan", "mbus", "metering", "iot", "meter", "bus", "protocol"
+    exports_sources = "CMakeLists.txt"
+    settings = "os", "compiler", "build_type", "arch"
+    options = {
+        "shared": [True, False],
+        "fPIC": [True, False]
+    }
+    default_options = {
+        "shared": False,
+        "fPIC": True
+    }
+    generators = "cmake", "cmake_find_package"
+
+    _cmake = None
+
+    @property
+    def _source_subfolder(self):
+        return "source_subfolder"
+
+    @property
+    def _build_subfolder(self):
+        return "build_subfolder"
+
+    def config_options(self):
+        if self.settings.os == "Windows":
+            del self.options.fPIC
+
+    def configure(self):
+        if self.options.shared:
+            del self.options.fPIC
+        if self.settings.os not in ["Linux"]:
+            raise ConanInvalidConfiguration("Only Linux supported")
+        del self.settings.compiler.libcxx
+        del self.settings.compiler.cppstd
+
+    def source(self):
+        tools.get(**self.conan_data["sources"][self.version])
+        extracted_dir = self.name + "-" + \
+            os.path.basename(
+                self.conan_data["sources"][self.version]["url"]).split(".")[0]
+        os.rename(extracted_dir, self._source_subfolder)
+
+    def _configure_cmake(self):
+        if self._cmake:
+            return self._cmake
+        self._cmake = CMake(self)
+        self._cmake.definitions['LIBMBUS_ENABLE_COVERAGE'] = False
+        self._cmake.definitions['LIBMBUS_BUILD_TESTS'] = False
+        self._cmake.definitions['LIBMBUS_BUILD_EXAMPLES'] = False
+        self._cmake.configure(build_folder=self._build_subfolder)
+        return self._cmake
+
+    def build(self):
+        cmake = self._configure_cmake()
+        cmake.build()
+
+    def package(self):
+        self.copy("LICENSE", src=self._source_subfolder, dst="licenses")
+        cmake = self._configure_cmake()
+        cmake.install()
+        tools.rmdir(os.path.join(self.package_folder, "share"))
+        tools.rmdir(os.path.join(self.package_folder, "lib", "cmake"))
+        tools.rmdir(os.path.join(self.package_folder,
+                                 "lib", "libmbus", "cmake"))
+
+    def package_info(self):
+        self.cpp_info.libs = tools.collect_libs(self)
+        if self.settings.os == "Linux":
+            self.cpp_info.system_libs = ["pthread", "m"]

recipes/libmbus/all/test_package/CMakeLists.txt

@@ -0,0 +1,8 @@
+cmake_minimum_required(VERSION 2.8.11)
+project(test_package)
+
+include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
+conan_basic_setup()
+
+add_executable(${PROJECT_NAME} test_package.c)
+target_link_libraries(${PROJECT_NAME} ${CONAN_LIBS})

recipes/libmbus/all/test_package/conanfile.py

@@ -0,0 +1,18 @@
+import os
+
+from conans import ConanFile, CMake, tools
+
+
+class TestConan(ConanFile):
+    settings = "os", "compiler", "build_type", "arch"
+    generators = "cmake"
+
+    def build(self):
+        cmake = CMake(self)
+        cmake.configure()
+        cmake.build()
+
+    def test(self):
+        if not tools.cross_building(self.settings):
+            bin_path = os.path.join("bin", "test_package")
+            bin_path = self.run(bin_path, run_environment=True)

recipes/libmbus/all/test_package/test_package.c

@@ -0,0 +1,19 @@
+#include <mbus/mbus.h>
+#include <stdio.h>
+#include <string.h>
+
+int main() {
+  mbus_handle *handle;
+  char *host = "localhost";
+  long port = 8000;
+
+  if ((handle = mbus_context_tcp(host, port)) == NULL) {
+    fprintf(stderr, "Scan failed: Could not initialize M-Bus context: %s\n",
+            mbus_error_str());
+    return 0;
+  }
+
+  mbus_context_free(handle);
+
+  return 0;
+}

recipes/libmbus/config.yml

@@ -0,0 +1,4 @@
+---
+versions:
+  "20200424":
+    folder: "all"