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, 91 insertions, 0 deletions

diff --git a/extern/sdlew/include/SDL2/SDL_mutex.h b/extern/sdlew/include/SDL2/SDL_mutex.h
new file mode 100644
index 00000000000..ddfc5730349
--- /dev/null
+++ b/extern/sdlew/include/SDL2/SDL_mutex.h
@@ -0,0 +1,91 @@
+
+#ifndef _SDL_mutex_h
+#define _SDL_mutex_h
+
+#include "SDL_stdinc.h"
+#include "SDL_error.h"
+
+#include "begin_code.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define SDL_MUTEX_TIMEDOUT  1
+
+#define SDL_MUTEX_MAXWAIT   (~(Uint32)0)
+
+struct SDL_mutex;
+typedef struct SDL_mutex SDL_mutex;
+
+typedef SDL_mutex * SDLCALL tSDL_CreateMutex(void);
+
+#define SDL_mutexP(m)   SDL_LockMutex(m)
+typedef int SDLCALL tSDL_LockMutex(SDL_mutex * mutex);
+
+typedef int SDLCALL tSDL_TryLockMutex(SDL_mutex * mutex);
+
+#define SDL_mutexV(m)   SDL_UnlockMutex(m)
+typedef int SDLCALL tSDL_UnlockMutex(SDL_mutex * mutex);
+
+typedef void SDLCALL tSDL_DestroyMutex(SDL_mutex * mutex);
+
+struct SDL_semaphore;
+typedef struct SDL_semaphore SDL_sem;
+
+typedef SDL_sem * SDLCALL tSDL_CreateSemaphore(Uint32 initial_value);
+
+typedef void SDLCALL tSDL_DestroySemaphore(SDL_sem * sem);
+
+typedef int SDLCALL tSDL_SemWait(SDL_sem * sem);
+
+typedef int SDLCALL tSDL_SemTryWait(SDL_sem * sem);
+
+typedef int SDLCALL tSDL_SemWaitTimeout(SDL_sem * sem, Uint32 ms);
+
+typedef int SDLCALL tSDL_SemPost(SDL_sem * sem);
+
+typedef Uint32 SDLCALL tSDL_SemValue(SDL_sem * sem);
+
+struct SDL_cond;
+typedef struct SDL_cond SDL_cond;
+
+typedef SDL_cond * SDLCALL tSDL_CreateCond(void);
+
+typedef void SDLCALL tSDL_DestroyCond(SDL_cond * cond);
+
+typedef int SDLCALL tSDL_CondSignal(SDL_cond * cond);
+
+typedef int SDLCALL tSDL_CondBroadcast(SDL_cond * cond);
+
+typedef int SDLCALL tSDL_CondWait(SDL_cond * cond, SDL_mutex * mutex);
+
+typedef int SDLCALL tSDL_CondWaitTimeout(SDL_cond * cond,
+                                                SDL_mutex * mutex, Uint32 ms);
+
+extern tSDL_CreateMutex *SDL_CreateMutex;
+extern tSDL_LockMutex *SDL_LockMutex;
+extern tSDL_TryLockMutex *SDL_TryLockMutex;
+extern tSDL_UnlockMutex *SDL_UnlockMutex;
+extern tSDL_DestroyMutex *SDL_DestroyMutex;
+extern tSDL_CreateSemaphore *SDL_CreateSemaphore;
+extern tSDL_DestroySemaphore *SDL_DestroySemaphore;
+extern tSDL_SemWait *SDL_SemWait;
+extern tSDL_SemTryWait *SDL_SemTryWait;
+extern tSDL_SemWaitTimeout *SDL_SemWaitTimeout;
+extern tSDL_SemPost *SDL_SemPost;
+extern tSDL_SemValue *SDL_SemValue;
+extern tSDL_CreateCond *SDL_CreateCond;
+extern tSDL_DestroyCond *SDL_DestroyCond;
+extern tSDL_CondSignal *SDL_CondSignal;
+extern tSDL_CondBroadcast *SDL_CondBroadcast;
+extern tSDL_CondWait *SDL_CondWait;
+extern tSDL_CondWaitTimeout *SDL_CondWaitTimeout;
+
+#ifdef __cplusplus
+}
+#endif
+#include "close_code.h"
+
+#endif
+