Fix MinGW build by exporting all the symbols, like on MSVC

CMakeLists.txt

@@ -525,6 +525,9 @@ add_library(gmssl ${src})
 
 if (WIN32)
 	target_link_libraries(gmssl -lws2_32)
+	if (MINGW)		
+		target_link_options(gmssl PRIVATE -Wl,--export-all-symbols)
+	endif()
 elseif (APPLE)
 	if (ENABLE_SDF)
 		target_link_libraries(gmssl dl)
@@ -534,9 +537,7 @@ elseif (APPLE)
 		# FIXME: different rules for cl and OpenCL framework
 		target_link_libraries(gmssl "-framework OpenCL")
 	endif()
-	#target_link_libraries(gmssl "-framework CoreFoundation") # rand_apple.c CFRelease()
-elseif (MINGW)
-	target_link_libraries(gmssl PRIVATE wsock32)
+	#target_link_libraries(gmssl "-framework CoreFoundation") # rand_apple.c CFRelease()	
 else()
 	if (ENABLE_SDF)
 		target_link_libraries(gmssl dl)
@@ -598,7 +599,7 @@ if (NOT ${CMAKE_SYSTEM_NAME} STREQUAL "iOS")
 	add_executable(gmssl-bin ${tools})
 	target_link_libraries(gmssl-bin LINK_PUBLIC gmssl)
 	set_target_properties(gmssl-bin PROPERTIES RUNTIME_OUTPUT_NAME gmssl)
-	if (MINGW)
+	if (MINGW)	
 		target_link_libraries(gmssl-bin PRIVATE Ws2_32)
 	endif()