Support dynamic loading of SDL libraries

This is mainly to address old issue when one need to have SDL library installed
in order to use our official builds. Some hip distros already installs SDL,
but it's not quite the same across all the variety of the distros.

We also now switching to SDL-2.0, most of the distros have it in repositories
already, so it shouldn't be huge deal to install it if needed.

Reviewers: campbellbarton

Reviewed By: campbellbarton

Differential Revision: https://developer.blender.org/D878

1 files changed, 43 insertions, 0 deletions

diff --git a/extern/sdlew/include/SDL2/SDL_error.h b/extern/sdlew/include/SDL2/SDL_error.h
new file mode 100644
index 00000000000..8bef6c109be
--- /dev/null
+++ b/extern/sdlew/include/SDL2/SDL_error.h
@@ -0,0 +1,43 @@
+
+#ifndef _SDL_error_h
+#define _SDL_error_h
+
+#include "SDL_stdinc.h"
+
+#include "begin_code.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef int SDLCALL tSDL_SetError(const char *fmt, ...);
+typedef const char * SDLCALL tSDL_GetError(void);
+typedef void SDLCALL tSDL_ClearError(void);
+
+#define SDL_OutOfMemory()   SDL_Error(SDL_ENOMEM)
+#define SDL_Unsupported()   SDL_Error(SDL_UNSUPPORTED)
+#define SDL_InvalidParamError(param)    SDL_SetError("Parameter '%s' is invalid", (param))
+typedef enum
+{
+    SDL_ENOMEM,
+    SDL_EFREAD,
+    SDL_EFWRITE,
+    SDL_EFSEEK,
+    SDL_UNSUPPORTED,
+    SDL_LASTERROR
+} SDL_errorcode;
+
+typedef int SDLCALL tSDL_Error(SDL_errorcode code);
+
+extern tSDL_SetError *SDL_SetError;
+extern tSDL_GetError *SDL_GetError;
+extern tSDL_ClearError *SDL_ClearError;
+extern tSDL_Error *SDL_Error;
+
+#ifdef __cplusplus
+}
+#endif
+#include "close_code.h"
+
+#endif
+