[BUG] perf cross-compile error dual to fixdep not host-exe

[He Kuang]

Hi,

perf cross-compile error dual to fixdep is not a host executable, first bad commit
is 7c422f557266("tools build: Build fixdep helper from perf and basic libs")

Cross-compiling an aarch64 target on x86_64 host, error like this:

  $ make ARCH=aarch64 O=xx/aarch64 CROSS_COMPILE=aarch64-linux-gnu
  ...
  make[3]: *** [xx/aarch64/parse-utils.o] Error 126
  make[3]: *** Waiting for unfinished jobs....
  /bin/sh: xx/aarch64//fixdep: cannot execute binary file

  $ uname -a
  x86_64 x86_64 x86_64 GNU/Linux

  $ file xx/aarch64//fixdep
  xx/aarch64//fixdep : ELF 64-bit LSB executable, ARM aarch64, version 1
  (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for
  GNU/Linux 3.7.0, not stripped

Thank you

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