_xgetbv() can be defined as a macro, so try an actual compilation
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@ -455,6 +455,13 @@ AC_SUBST(CFLAGS_PCLMUL)
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AC_CHECK_HEADERS([sys/mman.h intrin.h])
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AC_MSG_CHECKING([if _xgetbv() is available])
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AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM([[ #include <intrin.h> ]], [[ (void) _xgetbv(0) ]])],
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[AC_MSG_RESULT(yes)
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AC_DEFINE([HAVE__XGETBV], [1], [_xgetbv() is available])],
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[AC_MSG_RESULT(no)])
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dnl Checks for typedefs, structures, and compiler characteristics.
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AC_C_INLINE
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@ -675,7 +682,7 @@ AS_IF([test "x$EMSCRIPTEN" = "x"],[
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AC_CHECK_FUNCS([arc4random arc4random_buf])
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AC_CHECK_FUNCS([mmap mlock madvise mprotect explicit_bzero nanosleep])
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])
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AC_CHECK_FUNCS([posix_memalign getpid _xgetbv])
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AC_CHECK_FUNCS([posix_memalign getpid])
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AC_SUBST([LIBTOOL_EXTRA_FLAGS])
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