pjsip-pjproject/third_party/webrtc/PJSIP_NOTES

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Local changes:
1. ARM64 support build for Visual Studio.
diff --git a/third_party/webrtc/src/webrtc/typedefs.h b/third_party/webrtc/src/webrtc/typedefs.h
index 3034c7e74..9385befc9 100644
--- a/third_party/webrtc/src/webrtc/typedefs.h
+++ b/third_party/webrtc/src/webrtc/typedefs.h
@@ -23,7 +23,7 @@
#define WEBRTC_ARCH_X86_64
#define WEBRTC_ARCH_64_BITS
#define WEBRTC_ARCH_LITTLE_ENDIAN
-#elif defined(__aarch64__)
+#elif defined(__aarch64__) || defined(_M_ARM64)
#define WEBRTC_ARCH_64_BITS
#define WEBRTC_ARCH_LITTLE_ENDIAN
#elif defined(_M_IX86) || defined(__i386__)
2. Add include pj_config.h for PJSIP specific settings.
diff --git a/third_party/webrtc/src/webrtc/typedefs.h b/third_party/webrtc/src/webrtc/typedefs.h
index 9385befc9..3460ec880 100644
--- a/third_party/webrtc/src/webrtc/typedefs.h
+++ b/third_party/webrtc/src/webrtc/typedefs.h
@@ -14,6 +14,8 @@
#ifndef WEBRTC_TYPEDEFS_H_
#define WEBRTC_TYPEDEFS_H_
+#include "pj_config.h"
+
// Processor architecture detection. For more info on what's defined, see:
// http://msdn.microsoft.com/en-us/library/b0084kay.aspx
// http://www.agner.org/optimize/calling_conventions.pdf
3. Add support for RISC-V
diff --git a/third_party/webrtc/src/webrtc/typedefs.h b/third_party/webrtc/src/webrtc/typedefs.h
index 9385befc96..308f5fe982 100644
--- a/third_party/webrtc/src/webrtc/typedefs.h
+++ b/third_party/webrtc/src/webrtc/typedefs.h
@@ -47,6 +47,13 @@
#elif defined(__pnacl__)
#define WEBRTC_ARCH_32_BITS
#define WEBRTC_ARCH_LITTLE_ENDIAN
+#elif defined(__riscv) || defined(__riscv__)
+#define WEBRTC_ARCH_LITTLE_ENDIAN
+#if __riscv_xlen == 64
+#define WEBRTC_ARCH_64_BITS
+#else
+#define WEBRTC_ARCH_32_BITS
+#endif
#else
#error Please add support for your architecture in typedefs.h
#endif