8708fd888f
kstrtoul() exists only after torvalds/linux@33ee3b2e2e in 2.6.39. Use strict_strtoul() if kstrtoul() doesn't exist. Note that strict_strtoul() has existed as an alias for kstrtoul() for a while, but removed in torvalds/linux@3db2e9cdc0. It looks like RHEL6 (2.6.32 based) has backported kstrtoul(), and this caused build CI to pass compilation test. It should fail on vanilla < 2.6.39 kernels or distro kernels without backport as reported in #8760. -- # grep "kstrtoul(" /lib/modules/2.6.32-754.12.1.el6.x86_64/build/ \ include/linux/kernel.h >/dev/null # echo $? 0 Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: loli10K <ezomori.nozomu@gmail.com> Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@gmail.com> Closes #8760 Closes #8761
22 lines
549 B
Plaintext
22 lines
549 B
Plaintext
dnl #
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dnl # 2.6.39 API change
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dnl #
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dnl # 33ee3b2e2eb9 kstrto*: converting strings to integers done (hopefully) right
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dnl #
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dnl # If kstrtoul() doesn't exist, fallback to use strict_strtoul() which has
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dnl # existed since 2.6.25.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_KSTRTOUL], [
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AC_MSG_CHECKING([whether kstrtoul() exists])
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/kernel.h>
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],[
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int ret __attribute__ ((unused)) = kstrtoul(NULL, 10, NULL);
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_KSTRTOUL, 1, [kstrtoul() exists])
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],[
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AC_MSG_RESULT(no)
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])
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])
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