Handle BINARY=32 option on X86_64

cmake/system_check.cmake

@@ -39,10 +39,18 @@ elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "ppc.*|power.*|Power.*")
 elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "mips64.*")
   set(MIPS64 1)
 elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "amd64.*|x86_64.*|AMD64.*")
-  if("${CMAKE_SIZEOF_VOID_P}" EQUAL "8")
-    set(X86_64 1)
+  if (NOT BINARY)
+    if("${CMAKE_SIZEOF_VOID_P}" EQUAL "8")
+      set(X86_64 1)
+    else()
+      set(X86 1)
+    endif()
   else()
-    set(X86 1)
+    if (${BINARY} EQUAL "64")
+       set(X86_64 1)
+    else ()
+       set(X86 1)
+    endif()
   endif()
 elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "i686.*|i386.*|x86.*|amd64.*|AMD64.*")
   set(X86 1)
@@ -54,6 +62,22 @@ elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(aarch64.*|AARCH64.*)")
   else()
     set(ARM 1)
   endif()
+elseif (${CMAKE_CROSSCOMPILING})
+   if (${TARGET} STREQUAL "CORE2")
+    if (NOT BINARY)
+       set(X86 1)
+    elseif (${BINARY} EQUAL "64")
+       set(X86_64 1)
+    else ()
+       set(X86 1)
+    endif()
+   elseif (${TARGET} STREQUAL "ARMV7")
+       set(ARM 1)
+   else()
+       set(ARM64 1)
+   endif ()
+else ()
+   message(WARNING "Target ARCH could not be determined, got \"${CMAKE_SYSTEM_PROCESSOR}\"")
 endif()
 
 if (X86_64)
@@ -92,4 +116,3 @@ set (CCOMMON_OPT "${CCOMMON_OPT} -DNO_AVX512")
 endif()
   file(REMOVE "avx512.tmp" "avx512.o")
 endif()
-