From 5da7ac885738c88aa98cddd8bf4d256e1c3d36c2 Mon Sep 17 00:00:00 2001
From: Troy Schrapel <code@visualrealmsoftware.com>
Date: Sun, 3 Sep 2023 17:53:15 +0930
Subject: [PATCH] Fixed wasm build

---
 src/vrEmuTms9918.c     |  6 ++++++
 src/vrEmuTms9918.h     | 12 +++++++++++-
 src/vrEmuTms9918Util.c | 12 ++++++++++--
 src/vrEmuTms9918Util.h |  3 +--
 4 files changed, 28 insertions(+), 5 deletions(-)

diff --git a/src/vrEmuTms9918.c b/src/vrEmuTms9918.c
index 13e1a9a..70f37d7 100644
--- a/src/vrEmuTms9918.c
+++ b/src/vrEmuTms9918.c
@@ -22,6 +22,12 @@
 #define __time_critical_func(fn) fn
 #endif
 
+#ifndef WIN32
+#undef VR_EMU_TMS9918_DLLEXPORT
+#define VR_EMU_TMS9918_DLLEXPORT
+#endif
+
+
 #define VRAM_SIZE           (1 << 14) /* 16KB */
 #define VRAM_MASK     (VRAM_SIZE - 1) /* 0x3fff */
 
diff --git a/src/vrEmuTms9918.h b/src/vrEmuTms9918.h
index d42baf0..822da07 100644
--- a/src/vrEmuTms9918.h
+++ b/src/vrEmuTms9918.h
@@ -22,7 +22,13 @@
 
 #if __EMSCRIPTEN__
 #include <emscripten.h>
-#define VR_EMU_TMS9918_DLLEXPORT EMSCRIPTEN_KEEPALIVE
+  #ifdef __cplusplus
+  #define VR_EMU_TMS9918_DLLEXPORT EMSCRIPTEN_KEEPALIVE extern "C"
+  #define VR_EMU_TMS9918_DLLEXPORT_CONST extern "C"
+#else
+  #define VR_EMU_TMS9918_DLLEXPORT EMSCRIPTEN_KEEPALIVE extern
+  #define VR_EMU_TMS9918_DLLEXPORT_CONST extern
+#endif
 #elif VR_TMS9918_EMU_COMPILING_DLL
 #define VR_EMU_TMS9918_DLLEXPORT __declspec(dllexport)
 #elif defined WIN32 && !defined VR_EMU_TMS9918_STATIC
@@ -35,6 +41,10 @@
 #endif
 #endif
 
+#ifndef VR_EMU_TMS9918_DLLEXPORT_CONST
+#define VR_EMU_TMS9918_DLLEXPORT_CONST VR_EMU_TMS9918_DLLEXPORT
+#endif
+
 #include <stdint.h>
 #include <stdbool.h>
 
diff --git a/src/vrEmuTms9918Util.c b/src/vrEmuTms9918Util.c
index 55b81eb..9c3c393 100644
--- a/src/vrEmuTms9918Util.c
+++ b/src/vrEmuTms9918Util.c
@@ -11,11 +11,19 @@
 
 #include "vrEmuTms9918Util.h"
 
+#ifndef WIN32
+#undef VR_EMU_TMS9918_DLLEXPORT
+#define VR_EMU_TMS9918_DLLEXPORT
+#endif
+
+#undef VR_EMU_TMS9918_DLLEXPORT_CONST
+#define VR_EMU_TMS9918_DLLEXPORT_CONST
+
+
 #define LAST_SPRITE_YPOS        0xD0
 
  /* tms9918 palette */
-VR_EMU_TMS9918_DLLEXPORT
-uint32_t vrEmuTms9918Palette[] = {
+VR_EMU_TMS9918_DLLEXPORT_CONST uint32_t vrEmuTms9918Palette[] = {
   0x00000000, /* transparent */
   0x000000ff, /* black */
   0x21c942ff, /* medium green */
diff --git a/src/vrEmuTms9918Util.h b/src/vrEmuTms9918Util.h
index f00b390..ec2d591 100644
--- a/src/vrEmuTms9918Util.h
+++ b/src/vrEmuTms9918Util.h
@@ -48,8 +48,7 @@
  /*
   * TMS9918 palette (RGBA)
   */
-VR_EMU_TMS9918_DLLEXPORT
-uint32_t vrEmuTms9918Palette[];
+VR_EMU_TMS9918_DLLEXPORT_CONST uint32_t vrEmuTms9918Palette[];
 
 /*
  * Write a register value