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-rw-r--r--third-party/cmake/TargetArch.cmake23
1 files changed, 23 insertions, 0 deletions
diff --git a/third-party/cmake/TargetArch.cmake b/third-party/cmake/TargetArch.cmake
new file mode 100644
index 0000000000..71ea44ec59
--- /dev/null
+++ b/third-party/cmake/TargetArch.cmake
@@ -0,0 +1,23 @@
+# Sets TARGET_ARCH to a normalized name (X86 or X86_64).
+# See https://github.com/axr/solar-cmake/blob/master/TargetArch.cmake
+include(CheckSymbolExists)
+
+# X86
+check_symbol_exists("_M_IX86" "" T_M_IX86)
+check_symbol_exists("__i386__" "" T_I386)
+if(T_M_IX86 OR T_I386)
+set(TARGET_ARCH "X86")
+ return()
+endif()
+
+# X86_64
+check_symbol_exists("_M_AMD64" "" T_M_AMD64)
+check_symbol_exists("__x86_64__" "" T_X86_64)
+check_symbol_exists("__amd64__" "" T_AMD64)
+
+if(T_M_AMD64 OR T_X86_64 OR T_AMD64)
+set(TARGET_ARCH "X86_64")
+ return()
+endif()
+
+message(FATAL_ERROR "Unknown target architecture")