Add xrpld build option and Conan package test (#5052)

* Make xrpld target optional

* Add job to test Conan recipe

* [fold] address review comments

* [fold] Enable tests in workflows

* [fold] Rename with_xrpld option

* [fold] Fix grep expression

examples/example/CMakeLists.txt

@@ -0,0 +1,16 @@
+cmake_minimum_required(VERSION 3.21)
+
+set(name example)
+set(version 0.1.0)
+
+project(
+  ${name}
+  VERSION ${version}
+  LANGUAGES CXX
+)
+
+find_package(xrpl REQUIRED)
+
+add_executable(example)
+target_sources(example PRIVATE src/example.cpp)
+target_link_libraries(example PRIVATE xrpl::libxrpl)

examples/example/conanfile.py

@@ -0,0 +1,59 @@
+from conan import ConanFile, conan_version
+from conan.tools.cmake import CMake, cmake_layout
+
+class Example(ConanFile):
+
+    def set_name(self):
+        if self.name is None:
+            self.name = 'example'
+
+    def set_version(self):
+        if self.version is None:
+            self.version = '0.1.0'
+
+    license = 'ISC'
+    author = 'John Freeman <jfreeman08@gmail.com>'
+
+    settings = 'os', 'compiler', 'build_type', 'arch'
+    options = {'shared': [True, False], 'fPIC': [True, False]}
+    default_options = {
+        'shared': False,
+        'fPIC': True,
+        'xrpl:xrpld': False,
+    }
+
+    requires = ['xrpl/2.2.0-rc1@jfreeman/nodestore']
+    generators = ['CMakeDeps', 'CMakeToolchain']
+
+    exports_sources = [
+        'CMakeLists.txt',
+        'cmake/*',
+        'external/*',
+        'include/*',
+        'src/*',
+    ]
+
+    # For out-of-source build.
+    # https://docs.conan.io/en/latest/reference/build_helpers/cmake.html#configure
+    no_copy_source = True
+
+    def layout(self):
+        cmake_layout(self)
+
+    def config_options(self):
+        if self.settings.os == 'Windows':
+            del self.options.fPIC
+
+    def build(self):
+        cmake = CMake(self)
+        cmake.configure(variables={'BUILD_TESTING': 'NO'})
+        cmake.build()
+
+    def package(self):
+        cmake = CMake(self)
+        cmake.install()
+
+    def package_info(self):
+        path = f'{self.package_folder}/share/{self.name}/cpp_info.py'
+        with open(path, 'r') as file:
+            exec(file.read(), {}, {'self': self.cpp_info})

examples/example/src/example.cpp

@@ -0,0 +1,8 @@
+#include <cstdio>
+
+#include <xrpl/protocol/BuildInfo.h>
+
+int main(int argc, char const** argv) {
+    std::printf("%s\n", ripple::BuildInfo::getVersionString().c_str());
+    return 0;
+}