Add Windows support (#426) (#429)

(cherry picked from commit 913becd)

Co-authored-by: Silvio Traversaro <[email protected]>

Author: ct2034

diagnostic_aggregator/CMakeLists.txt

@@ -9,6 +9,7 @@ endif()
 if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID MATCHES "Clang")
   add_compile_options(-Wall -Wextra -Wpedantic)
 endif()
+set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
 
 find_package(ament_cmake REQUIRED)
 find_package(diagnostic_msgs REQUIRED)

diagnostic_updater/CMakeLists.txt

@@ -9,6 +9,7 @@ endif()
 if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID MATCHES "Clang")
   add_compile_options(-Wall -Wextra -Wpedantic)
 endif()
+set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
 
 find_package(ament_cmake REQUIRED)
 find_package(ament_cmake_python REQUIRED)