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18 lines
497 B
Plaintext
18 lines
497 B
Plaintext
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#
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# Some Linux machines run a 64-bit kernel with a 32-bit userspace. 'uname -m'
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# shows these as x86_64. Ask the system 'gcc' what it thinks.
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#
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AC_DEFUN([AC_IS_LINUX_MIXED],
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[AC_CACHE_CHECK(for 32-bit userspace on 64-bit system,llvm_cv_linux_mixed,
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[ AC_LANG_PUSH([C])
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
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[[#ifndef __x86_64__
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error: Not x86-64 even if uname says so!
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#endif
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]])],
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[llvm_cv_linux_mixed=no],
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[llvm_cv_linux_mixed=yes])
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AC_LANG_POP([C])
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])
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])
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