Patch glslang to avoid build errors on certain platforms

thirdparty/README.md

@@ -195,6 +195,7 @@ Files extracted from upstream source:
   to `glslang/build_info.h`
 - `LICENSE.txt`
 - Unnecessary files like `CMakeLists.txt`, `*.m4` and `updateGrammar` removed.
+- Patch in `patches/unused_cleanup.diff` must be applied.
 
 
 ## graphite

thirdparty/glslang/glslang/OSDependent/Unix/ossource.cpp

@@ -65,43 +65,6 @@ static void DetachThreadLinux(void *)
     DetachThread();
 }
 
-//
-// Registers cleanup handler, sets cancel type and state, and executes the thread specific
-// cleanup handler.  This function will be called in the Standalone.cpp for regression
-// testing.  When OpenGL applications are run with the driver code, Linux OS does the
-// thread cleanup.
-//
-void OS_CleanupThreadData(void)
-{
-#if defined(__ANDROID__) || defined(__Fuchsia__)
-    DetachThreadLinux(NULL);
-#else
-    int old_cancel_state, old_cancel_type;
-    void *cleanupArg = NULL;
-
-    //
-    // Set thread cancel state and push cleanup handler.
-    //
-    pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &old_cancel_state);
-    pthread_cleanup_push(DetachThreadLinux, (void *) cleanupArg);
-
-    //
-    // Put the thread in deferred cancellation mode.
-    //
-    pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, &old_cancel_type);
-
-    //
-    // Pop cleanup handler and execute it prior to unregistering the cleanup handler.
-    //
-    pthread_cleanup_pop(1);
-
-    //
-    // Restore the thread's previous cancellation mode.
-    //
-    pthread_setcanceltype(old_cancel_state, NULL);
-#endif
-}
-
 //
 // Thread Local Storage Operations
 //

thirdparty/glslang/glslang/OSDependent/osinclude.h

@@ -54,8 +54,6 @@ void ReleaseGlobalLock();
 
 typedef unsigned int (*TThreadEntrypoint)(void*);
 
-void OS_CleanupThreadData(void);
-
 void OS_DumpMemoryCounters();
 
 } // end namespace glslang

thirdparty/glslang/patches/unused_cleanup.diff

@@ -0,0 +1,61 @@
+diff --git a/thirdparty/glslang/glslang/OSDependent/Unix/ossource.cpp b/thirdparty/glslang/glslang/OSDependent/Unix/ossource.cpp
+index 81da99c2c4..1cbd616e98 100644
+--- a/thirdparty/glslang/glslang/OSDependent/Unix/ossource.cpp
++++ b/thirdparty/glslang/glslang/OSDependent/Unix/ossource.cpp
+@@ -65,43 +65,6 @@ static void DetachThreadLinux(void *)
+     DetachThread();
+ }
+ 
+-//
+-// Registers cleanup handler, sets cancel type and state, and executes the thread specific
+-// cleanup handler.  This function will be called in the Standalone.cpp for regression
+-// testing.  When OpenGL applications are run with the driver code, Linux OS does the
+-// thread cleanup.
+-//
+-void OS_CleanupThreadData(void)
+-{
+-#if defined(__ANDROID__) || defined(__Fuchsia__)
+-    DetachThreadLinux(NULL);
+-#else
+-    int old_cancel_state, old_cancel_type;
+-    void *cleanupArg = NULL;
+-
+-    //
+-    // Set thread cancel state and push cleanup handler.
+-    //
+-    pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &old_cancel_state);
+-    pthread_cleanup_push(DetachThreadLinux, (void *) cleanupArg);
+-
+-    //
+-    // Put the thread in deferred cancellation mode.
+-    //
+-    pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, &old_cancel_type);
+-
+-    //
+-    // Pop cleanup handler and execute it prior to unregistering the cleanup handler.
+-    //
+-    pthread_cleanup_pop(1);
+-
+-    //
+-    // Restore the thread's previous cancellation mode.
+-    //
+-    pthread_setcanceltype(old_cancel_state, NULL);
+-#endif
+-}
+-
+ //
+ // Thread Local Storage Operations
+ //
+diff --git a/thirdparty/glslang/glslang/OSDependent/osinclude.h b/thirdparty/glslang/glslang/OSDependent/osinclude.h
+index 218abe4f23..fcfeff2cc4 100644
+--- a/thirdparty/glslang/glslang/OSDependent/osinclude.h
++++ b/thirdparty/glslang/glslang/OSDependent/osinclude.h
+@@ -54,8 +54,6 @@ void ReleaseGlobalLock();
+ 
+ typedef unsigned int (*TThreadEntrypoint)(void*);
+ 
+-void OS_CleanupThreadData(void);
+-
+ void OS_DumpMemoryCounters();
+ 
+ } // end namespace glslang