arm64 compat

Author: FlUxIuS

CMakeLists.txt

@@ -64,6 +64,11 @@ if(ENABLE_LIBUNWIND AND UNIX AND NOT ANDROID)
         if(LIBUNWIND_ARCH_LIB)
           list(APPEND LIBUNWIND_LIBRARIES ${LIBUNWIND_ARCH_LIB})
         endif()
+      elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64|ARM64")
+        find_library(LIBUNWIND_ARCH_LIB unwind-aarch64)
+        if(LIBUNWIND_ARCH_LIB)
+          list(APPEND LIBUNWIND_LIBRARIES ${LIBUNWIND_ARCH_LIB})
+        endif()
       endif()
       set(LIBUNWIND_FOUND TRUE)
     endif()
@@ -83,6 +88,16 @@ if(ENABLE_LIBUNWIND AND UNIX AND NOT ANDROID)
           message(WARNING "libunwind-x86_64 not found; stack traces may fail to link on x86_64.")
         endif()
       endif()
+    elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64|ARM64")
+      list(JOIN LIBUNWIND_LIBRARIES ";" _libunwind_libs_joined)
+      if(NOT _libunwind_libs_joined MATCHES "unwind-aarch64")
+        find_library(LIBUNWIND_ARCH_LIB unwind-aarch64)
+        if(LIBUNWIND_ARCH_LIB)
+          list(APPEND LIBUNWIND_LIBRARIES ${LIBUNWIND_ARCH_LIB})
+        else()
+          message(WARNING "libunwind-aarch64 not found; stack traces may fail to link on aarch64.")
+        endif()
+      endif()
     endif()
     set(HAVE_LIBUNWIND ON)
     message(STATUS "libunwind found - LIBUNWIND_LIBRARIES=${LIBUNWIND_LIBRARIES}")