standalone example that shows multiple declaration issue

.github/workflows/ci.yml

@@ -48,6 +48,13 @@ jobs:
           cmake ../examples -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=~/local -DZENOHCXX_SOURCE=PACKAGE
           cmake --build . --config Release
 
+      - name: make standalone example with zenoh-cpp as installed package
+        shell: bash
+        run: |
+          mkdir -p build_examples_standalone_findproj && cd build_examples_standalone_findproj
+          cmake ../examples/standalone -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=~/local -DZENOHCXX_SOURCE=PACKAGE
+          cmake --build . --config Release
+
       - name: make tests
         shell: bash
         run: |

examples/standalone/CMakeLists.txt

@@ -0,0 +1,9 @@
+cmake_minimum_required(VERSION 3.16)
+project(zenoh_foo)
+
+find_package(zenohc REQUIRED)
+find_package(zenohcxx REQUIRED)
+
+add_executable(foo main.cpp foo.cpp)
+target_link_libraries(foo zenohcxx::zenohc::lib)
+set_property(TARGET foo PROPERTY CXX_STANDARD 17)

examples/standalone/foo.cpp

@@ -0,0 +1,4 @@
+#include <iostream>
+#include <zenohc.hxx>
+
+#include "foo.hpp"

examples/standalone/foo.hpp

@@ -0,0 +1,6 @@
+#ifndef FOO_HXX
+#define FOO_HXX
+
+#include "zenohc.hxx"
+
+#endif  // FOO_HXX

examples/standalone/main.cpp

@@ -0,0 +1,10 @@
+#include <iostream>
+
+#include <zenohc.hxx>
+
+#include "foo.hpp"
+
+int main()
+{
+  return 0;
+}