[TD-3148] <feature>: make build system detect host arch. detect amd64 and x86

cmake/platform.inc

@@ -78,36 +78,46 @@ ELSE()
   EXIT ()
 ENDIF ()
 
-# if generate ARM version:
-#   cmake -DCPUTYPE=aarch32 .. or cmake -DCPUTYPE=aarch64
-IF (${CPUTYPE} MATCHES "aarch32")
+IF ("${CPUTYPE}" STREQUAL "")
+  MESSAGE(STATUS "The current platform is detected as " ${CMAKE_SYSTEM_PROCESSOR})
+
+  IF (CMAKE_SYSTEM_PROCESSOR MATCHES "(amd64)|(AMD64)")
+    MESSAGE(STATUS "The current platform is amd64")
+    MESSAGE(STATUS "Set CPUTYPE to x64")
+    SET(CPUTYPE "x64")
+  ELSEIF (CMAKE_SYSTEM_PROCESSOR MATCHES "(x86)|(X86)")
+    MESSAGE(STATUS "The current platform is x86")
+    MESSAGE(STATUS "Set CPUTYPE to x86")
+    SET(CPUTYPE "x32")
+  ELSEIF (CMAKE_SYSTEM_PROCESSOR MATCHES "armv7l")
+    MESSAGE(STATUS "Set CPUTYPE to aarch32")
+    SET(CPUTYPE "aarch32")
+  ENDIF ()
+
+ELSE ()
+  # if generate ARM version:
+  #   cmake -DCPUTYPE=aarch32 .. or cmake -DCPUTYPE=aarch64
+  IF (${CPUTYPE} MATCHES "aarch32")
     SET(TD_LINUX TRUE)
     SET(TD_LINUX_32 FALSE)
     SET(TD_ARM_32 TRUE)
     MESSAGE(STATUS "input cpuType: aarch32")
-ELSEIF (${CPUTYPE} MATCHES "aarch64")
+  ELSEIF (${CPUTYPE} MATCHES "aarch64")
     SET(TD_LINUX TRUE)
     SET(TD_LINUX_64 FALSE)
     SET(TD_ARM_64 TRUE)
     MESSAGE(STATUS "input cpuType: aarch64")
-ELSEIF (${CPUTYPE} MATCHES "mips64")
+  ELSEIF (${CPUTYPE} MATCHES "mips64")
     SET(TD_LINUX TRUE)
     SET(TD_LINUX_64 FALSE)
     SET(TD_MIPS_64 TRUE)
     MESSAGE(STATUS "input cpuType: mips64")
-ELSEIF (${CPUTYPE} MATCHES "x64")
+  ELSEIF (${CPUTYPE} MATCHES "x64")
     MESSAGE(STATUS "input cpuType: x64")
-ELSEIF (${CPUTYPE} MATCHES "x86")
+  ELSEIF (${CPUTYPE} MATCHES "x86")
     MESSAGE(STATUS "input cpuType: x86")
-ELSE ()
+  ELSE ()
     MESSAGE(STATUS "input cpuType unknown " ${CPUTYPE})
-
-  MESSAGE(STATUS "The current platform is detected as " ${CMAKE_SYSTEM_PROCESSOR})
-  IF (CMAKE_SYSTEM_PROCESSOR MATCHES "(x86)|(X86)|(amd64)|(AMD64)")
-    MESSAGE(STATUS "The current platform is x86")
-  ELSEIF (CMAKE_SYSTEM_PROCESSOR MATCHES "armv7l")
-    MESSAGE(STATUS "Set CPUTYPE to aarch32")
-    SET(CPUTYPE "aarch32")
   ENDIF ()
   
 ENDIF ()