# This patch applies C++ name mangling to all of OpenAL Soft's functions so that they don't conflict with the functions in Emscripten's OpenAL implementation.
# Otherwise, the Emscripten build crashes on startup because the Emscripten version of RetroArch also depends on OpenAL, and it will incorrectly try to use our OpenAL implementation instead of Emscripten's.
# Also stops OpenAL Soft's build system from unconditionally enabling the `-pthread` compiler flag when targeting Emscripten because it causes problems if the rest of mkxp-z isn't also building with pthread support.

diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -491,7 +491,10 @@ if(NOT WIN32)
         message(FATAL_ERROR "PThreads is required for non-Windows builds!")
     endif()
 
-    check_c_compiler_flag(-pthread HAVE_PTHREAD)
+    string(TOLOWER ${CMAKE_SYSTEM_NAME} SYSTEM_LOWER)
+    if(NOT SYSTEM_LOWER STREQUAL "emscripten")
+        check_c_compiler_flag(-pthread HAVE_PTHREAD)
+    endif()
     if(HAVE_PTHREAD)
         set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -pthread")
         set(C_FLAGS ${C_FLAGS} -pthread)
diff --git a/include/AL/al.h b/include/AL/al.h
--- a/include/AL/al.h
+++ b/include/AL/al.h
@@ -1,9 +1,9 @@
 #ifndef AL_AL_H
 #define AL_AL_H
 
-#if defined(__cplusplus)
-extern "C" {
-#endif
+
+
+
 
 #ifndef AL_API
  #if defined(AL_LIBTYPE_STATIC)
@@ -648,8 +648,8 @@ typedef void          (AL_APIENTRY *LPALDOPPLERVELOCITY)(ALfloat value);
 typedef void          (AL_APIENTRY *LPALSPEEDOFSOUND)(ALfloat value);
 typedef void          (AL_APIENTRY *LPALDISTANCEMODEL)(ALenum distanceModel);
 
-#if defined(__cplusplus)
-}  /* extern "C" */
-#endif
+
+
+
 
 #endif /* AL_AL_H */
diff --git a/include/AL/alc.h b/include/AL/alc.h
--- a/include/AL/alc.h
+++ b/include/AL/alc.h
@@ -1,9 +1,9 @@
 #ifndef AL_ALC_H
 #define AL_ALC_H
 
-#if defined(__cplusplus)
-extern "C" {
-#endif
+
+
+
 
 #ifndef ALC_API
  #if defined(AL_LIBTYPE_STATIC)
@@ -263,8 +263,8 @@ typedef void           (ALC_APIENTRY *LPALCCAPTURESTART)(ALCdevice *device);
 typedef void           (ALC_APIENTRY *LPALCCAPTURESTOP)(ALCdevice *device);
 typedef void           (ALC_APIENTRY *LPALCCAPTURESAMPLES)(ALCdevice *device, ALCvoid *buffer, ALCsizei samples);
 
-#if defined(__cplusplus)
-}
-#endif
+
+
+
 
 #endif /* AL_ALC_H */
diff --git a/include/AL/alext.h b/include/AL/alext.h
--- a/include/AL/alext.h
+++ b/include/AL/alext.h
@@ -40,9 +40,9 @@ typedef unsigned __int64 uint64_t;
 #include "alc.h"
 #include "al.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+
+
+
 
 #ifndef AL_LOKI_IMA_ADPCM_format
 #define AL_LOKI_IMA_ADPCM_format 1
@@ -578,8 +578,8 @@ AL_API void AL_APIENTRY alGetPointervSOFT(ALenum pname, void **values);
 #endif
 #endif
 
-#ifdef __cplusplus
-}
-#endif
+
+
+
 
 #endif
diff --git a/include/AL/efx.h b/include/AL/efx.h
--- a/include/AL/efx.h
+++ b/include/AL/efx.h
@@ -6,9 +6,9 @@
 #include "alc.h"
 #include "al.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+
+
+
 
 #define ALC_EXT_EFX_NAME                         "ALC_EXT_EFX"
 
@@ -755,8 +755,8 @@ AL_API void AL_APIENTRY alGetAuxiliaryEffectSlotfv(ALuint effectslot, ALenum par
 #define AL_DEFAULT_METERS_PER_UNIT               (1.0f)
 
 
-#ifdef __cplusplus
-}  /* extern "C" */
-#endif
+
+
+
 
 #endif /* AL_EFX_H */