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Linux compat: fix DECLARE_EVENT_CLASS() test when ZFS is built-in 

ZFS_LINUX_TRY_COMPILE_HEADER macro doesn't take CONFIG_ZFS=y into
account. As a result, on several latest Linux versions, configure
script marks DECLARE_EVENT_CLASS() available for non-GPL when ZFS
is being built as a module, but marks it unavailable when ZFS is
built-in.
Follow the logic of the neighbor macros and adjust
ZFS_LINUX_TRY_COMPILE_HEADER accordingly, so that it doesn't try
to look for a .ko when ZFS is built-in.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Closes #14006
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Alexander 2022-10-17 20:08:36 +02:00 committed by GitHub
parent 0aae8a449b
commit ab49df487b
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1 changed files with 11 additions and 4 deletions
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15
config/kernel.m4
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@ -940,8 +940,15 @@ dnl # like ZFS_LINUX_TRY_COMPILE, except the contents conftest.h are
dnl # provided via the fifth parameter
dnl #
AC_DEFUN([ZFS_LINUX_TRY_COMPILE_HEADER], [
ZFS_LINUX_COMPILE_IFELSE(
[ZFS_LINUX_TEST_PROGRAM([[$1]], [[$2]], [[ZFS_META_LICENSE]])],
[test -f build/conftest/conftest.ko],
[$3], [$4], [$5])
AS_IF([test "x$enable_linux_builtin" = "xyes"], [
ZFS_LINUX_COMPILE_IFELSE(
[ZFS_LINUX_TEST_PROGRAM([[$1]], [[$2]],
[[ZFS_META_LICENSE]])],
[test -f build/conftest/conftest.o], [$3], [$4], [$5])
], [
ZFS_LINUX_COMPILE_IFELSE(
[ZFS_LINUX_TEST_PROGRAM([[$1]], [[$2]],
[[ZFS_META_LICENSE]])],
[test -f build/conftest/conftest.ko], [$3], [$4], [$5])
])
])