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50 lines
1.4 KiB
Plaintext
50 lines
1.4 KiB
Plaintext
dnl ######################################################################
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dnl ensure that linux kernel headers match running kernel
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AC_DEFUN([AMU_LINUX_HEADERS],
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[
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# test sanity of running kernel vs. kernel headers
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AC_MSG_CHECKING("host headers version")
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case ${host_os} in
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linux )
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host_header_version="bad"
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AMU_EXPAND_RUN_STRING(
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[
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#include <stdio.h>
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#include <linux/version.h>
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],
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[
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if (argc > 1)
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#ifdef UTS_RELEASE
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printf("%s", UTS_RELEASE);
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#else
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# define AMU_MA(a) ((a) >> 16)
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# define AMU_MI(a) (((a) & 0xffff) >> 8)
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# define AMU_PL(a) ((a) & 0xff)
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printf("%d.%d.%d", AMU_MA(LINUX_VERSION_CODE), AMU_MI(LINUX_VERSION_CODE), AMU_PL(LINUX_VERSION_CODE));
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#endif
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],
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[ host_header_version=$value ],
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[ echo
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AC_MSG_ERROR([cannot find UTS_RELEASE in <linux/version.h>.
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This Linux system may be misconfigured or unconfigured!])
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])
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;;
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* ) host_header_version=$host_os_version ;;
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esac
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AC_DEFINE_UNQUOTED(HOST_HEADER_VERSION, "$host_header_version")
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AC_MSG_RESULT($host_header_version)
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case ${host_os} in
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linux )
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if test "$host_os_version" != $host_header_version
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then
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AC_MSG_WARN([Linux kernel $host_os_version mismatch with $host_header_version headers!])
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fi
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;;
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esac
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dnl cache these two for debugging purposes
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ac_cv_os_version=$host_os_version
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ac_cv_header_version=$host_header_version
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])
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dnl ======================================================================
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