Fix MinGW build issue on example #2638

CMakeLists.txt

@@ -176,11 +176,10 @@ if(SPDLOG_SYSTEM_INCLUDES)
     set(SPDLOG_INCLUDES_LEVEL "SYSTEM")
 endif()
 
-
 target_compile_definitions(spdlog PUBLIC SPDLOG_COMPILED_LIB)
 target_include_directories(spdlog ${SPDLOG_INCLUDES_LEVEL} PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}/include>"
                                          "$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>")
-target_link_libraries(spdlog PUBLIC Threads::Threads)
+target_link_libraries(spdlog PUBLIC Threads::Threads $<$<BOOL:${MINGW}>: ws2_32>)
 spdlog_enable_warnings(spdlog)
 
 set_target_properties(spdlog PROPERTIES VERSION ${SPDLOG_VERSION} SOVERSION ${SPDLOG_VERSION_MAJOR}.${SPDLOG_VERSION_MINOR})
@@ -199,7 +198,7 @@ add_library(spdlog::spdlog_header_only ALIAS spdlog_header_only)
 
 target_include_directories(spdlog_header_only ${SPDLOG_INCLUDES_LEVEL} INTERFACE "$<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}/include>"
                                                         "$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>")
-target_link_libraries(spdlog_header_only INTERFACE Threads::Threads)
+target_link_libraries(spdlog_header_only INTERFACE Threads::Threads $<$<BOOL:${MINGW}>: ws2_32>)
 
 # ---------------------------------------------------------------------------------------
 # Use fmt package if using external fmt

include/spdlog/details/udp_client-windows.h

@@ -15,9 +15,11 @@
 #include <stdio.h>
 #include <string>
 
-#pragma comment(lib, "Ws2_32.lib")
-#pragma comment(lib, "Mswsock.lib")
-#pragma comment(lib, "AdvApi32.lib")
+#if defined(_MSC_VER)
+#	pragma comment(lib, "Ws2_32.lib")
+#	pragma comment(lib, "Mswsock.lib")
+#	pragma comment(lib, "AdvApi32.lib")
+#endif
 
 namespace spdlog {
 namespace details {
@@ -25,7 +27,7 @@ class udp_client
 {
     static constexpr int TX_BUFFER_SIZE = 1024 * 10;
     SOCKET socket_ = INVALID_SOCKET;
-    sockaddr_in addr_ = {0};
+    sockaddr_in addr_ = {};
 
     static void init_winsock_()
     {