From 1e971e11610ab787e265827a15b572aba9a1ef7c Mon Sep 17 00:00:00 2001
From: Chris Marsh <chris@discordapp.com>
Date: Mon, 31 Jul 2017 15:58:39 -0700
Subject: [PATCH] Start on dllification

---
 include/discord-rpc.h | 44 ++++++++++++++++++++++++++++++-------------
 src/CMakeLists.txt    | 16 ++++++++++++++--
 2 files changed, 45 insertions(+), 15 deletions(-)

diff --git a/include/discord-rpc.h b/include/discord-rpc.h
index 519835a..2eba2f7 100644
--- a/include/discord-rpc.h
+++ b/include/discord-rpc.h
@@ -1,24 +1,42 @@
 #pragma once
 #include <stdint.h>
 
+// clang-format off
+
+#if defined(DISCORD_DYNAMIC_LIB)
+#  if defined(_WIN32)
+#    if defined(DISCORD_BUILDING_SDK)
+#      define DISCORD_EXPORT __declspec(dllexport)
+#    else
+#      define DISCORD_EXPORT __declspec(dllimport)
+#    endif
+#  else
+#    define DISCORD_EXPORT __attribute__((visibility("default")))
+#  endif
+#else
+#  define DISCORD_EXPORT 
+#endif
+
+// clang-format on
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 typedef struct DiscordRichPresence {
-    const char* state; /* max 128 bytes */
+    const char* state;   /* max 128 bytes */
     const char* details; /* max 128 bytes */
     int64_t startTimestamp;
     int64_t endTimestamp;
-    const char* largeImageKey; /* max 32 bytes */
+    const char* largeImageKey;  /* max 32 bytes */
     const char* largeImageText; /* max 128 bytes */
-    const char* smallImageKey; /* max 32 bytes */
+    const char* smallImageKey;  /* max 32 bytes */
     const char* smallImageText; /* max 128 bytes */
-    const char* partyId; /* max 128 bytes */
+    const char* partyId;        /* max 128 bytes */
     int partySize;
     int partyMax;
-    const char* matchSecret; /* max 128 bytes */
-    const char* joinSecret; /* max 128 bytes */
+    const char* matchSecret;    /* max 128 bytes */
+    const char* joinSecret;     /* max 128 bytes */
     const char* spectateSecret; /* max 128 bytes */
     int8_t instance;
 } DiscordRichPresence;
@@ -31,20 +49,20 @@ typedef struct DiscordEventHandlers {
     void (*spectateGame)(const char* spectateSecret);
 } DiscordEventHandlers;
 
-void Discord_Initialize(const char* applicationId,
-                        DiscordEventHandlers* handlers,
-                        int autoRegister);
-void Discord_Shutdown();
+DISCORD_EXPORT void Discord_Initialize(const char* applicationId,
+                                       DiscordEventHandlers* handlers,
+                                       int autoRegister);
+DISCORD_EXPORT void Discord_Shutdown();
 
 /* checks for incoming messages, dispatches callbacks */
-void Discord_RunCallbacks();
+DISCORD_EXPORT void Discord_RunCallbacks();
 
 /* If you disable the lib starting its own io thread, you'll need to call this from your own */
 #ifdef DISCORD_DISABLE_IO_THREAD
-void Discord_UpdateConnection();
+DISCORD_EXPORT void Discord_UpdateConnection();
 #endif
 
-void Discord_UpdatePresence(const DiscordRichPresence* presence);
+DISCORD_EXPORT void Discord_UpdatePresence(const DiscordRichPresence* presence);
 
 #ifdef __cplusplus
 } /* extern "C" */
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 621a655..2145fab 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,26 +1,38 @@
 include_directories(${PROJECT_SOURCE_DIR}/include)
 
 option(ENABLE_IO_THREAD "Start up a separate I/O thread, otherwise I'd need to call an update function" ON)
+option(BUILD_DYNAMIC_LIB "Build library as a DLL" OFF)
 
 if (${ENABLE_IO_THREAD} EQUAL OFF)
     add_definitions(-DDISCORD_DISABLE_IO_THREAD)
 endif (${ENABLE_IO_THREAD} EQUAL OFF)
 
+if (${BUILD_DYNAMIC_LIB} EQUAL ON)
+    set(RPC_LIBRARY_TYPE DYNAMIC)
+else(${BUILD_DYNAMIC_LIB} EQUAL ON)
+    set(RPC_LIBRARY_TYPE STATIC)
+endif(${BUILD_DYNAMIC_LIB} EQUAL ON)
+
 set(BASE_RPC_SRC ${PROJECT_SOURCE_DIR}/include/discord-rpc.h discord-rpc.cpp discord-register.cpp rpc_connection.h rpc_connection.cpp serialization.h serialization.cpp connection.h backoff.h)
 
 if(WIN32)
-    add_library(discord-rpc STATIC ${BASE_RPC_SRC} connection_win.cpp)
+    add_library(discord-rpc ${RPC_LIBRARY_TYPE} ${BASE_RPC_SRC} connection_win.cpp)
     target_compile_options(discord-rpc PRIVATE /W4)
 endif(WIN32)
 
 if(UNIX)
-    add_library(discord-rpc STATIC ${BASE_RPC_SRC} connection_unix.cpp)
+    add_library(discord-rpc ${RPC_LIBRARY_TYPE} ${BASE_RPC_SRC} connection_unix.cpp)
     target_link_libraries(discord-rpc PUBLIC pthread)
     target_compile_options(discord-rpc PRIVATE -g -Wall)
 endif(UNIX)
 
 target_include_directories(discord-rpc PRIVATE ${RAPIDJSON}/include)
 
+if (${BUILD_DYNAMIC_LIB} EQUAL ON)
+    target_compile_definitions(discord-rpc PUBLIC -DDISCORD_DYNAMIC_LIB)
+    target_compile_definitions(discord-rpc PRIVATE -DDISCORD_BUILDING_SDK)
+endif(${BUILD_DYNAMIC_LIB} EQUAL ON)
+
 add_dependencies(discord-rpc clangformat)
 
 # install