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configure: Expose MOUNT_ATTR_IDMAP detection result to C code

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This is to allow compiling composefs on machines having somewhat old
Linux kernel headers.

Signed-off-by: Rogerio Guerra Borin <rogerio.borin@toradex.com>
This commit is contained in:
Rogerio Guerra Borin 2024-02-07 00:19:45 -03:00
parent 9350006011
commit cdfdfed27d
1 changed files with 2 additions and 1 deletions
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configure.ac
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@ -295,6 +295,7 @@ AC_COMPILE_IFELSE(
],[int foo = MOUNT_ATTR_IDMAP;]
)],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_MOUNT_ATTR_IDMAP], 1, [Define if MOUNT_ATTR_IDMAP is available in linux/mount.h])
have_mount_attr_idmap=yes],
[AC_MSG_RESULT(no)])
dnl These are needed by libcomposefs to use the new mount API optionally