[arrow] branch master updated: ARROW-17440: [C++] Support RISC-V architecture (#13902)

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The following commit(s) were added to refs/heads/master by this push:
     new 050876c5b5 ARROW-17440: [C++] Support RISC-V architecture (#13902)
050876c5b5 is described below

commit 050876c5b502e73339de4d45e9bb2b54a3b3e095
Author: Felix Yan <fe...@archlinux.org>
AuthorDate: Wed Aug 17 11:47:34 2022 +0300

    ARROW-17440: [C++] Support RISC-V architecture (#13902)
    
    Signed-off-by: Felix Yan <fe...@archlinux.org>
    
    Lead-authored-by: Yibo Cai <yi...@arm.com>
    Co-authored-by: Felix Yan <fe...@archlinux.org>
    Signed-off-by: Antoine Pitrou <an...@python.org>
---
 cpp/cmake_modules/SetupCxxFlags.cmake | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/cpp/cmake_modules/SetupCxxFlags.cmake b/cpp/cmake_modules/SetupCxxFlags.cmake
index abd5635a35..a70ae5d1e2 100644
--- a/cpp/cmake_modules/SetupCxxFlags.cmake
+++ b/cpp/cmake_modules/SetupCxxFlags.cmake
@@ -24,7 +24,9 @@ include(CheckCXXSourceCompiles)
 message(STATUS "System processor: ${CMAKE_SYSTEM_PROCESSOR}")
 
 if(NOT DEFINED ARROW_CPU_FLAG)
-  if(CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64|ARM64|arm64")
+  if(CMAKE_SYSTEM_PROCESSOR MATCHES "AMD64|X86|x86|i[3456]86")
+    set(ARROW_CPU_FLAG "x86")
+  elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64|ARM64|arm64")
     set(ARROW_CPU_FLAG "armv8")
   elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "armv7")
     set(ARROW_CPU_FLAG "armv7")
@@ -32,8 +34,10 @@ if(NOT DEFINED ARROW_CPU_FLAG)
     set(ARROW_CPU_FLAG "ppc")
   elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "s390x")
     set(ARROW_CPU_FLAG "s390x")
+  elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "riscv64")
+    set(ARROW_CPU_FLAG "riscv64")
   else()
-    set(ARROW_CPU_FLAG "x86")
+    message(FATAL_ERROR "Unknown system processor")
   endif()
 endif()