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build-sys: Disable composefs on too-old Linux headers

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This should fix the build with Google OSS-fuzz which currently
uses an old Ubuntu.
This commit is contained in:
Colin Walters 2023-08-22 11:36:04 -04:00
parent 16b97d8a40
commit 90e54619df
1 changed files with 16 additions and 2 deletions
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18
configure.ac
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@ -274,7 +274,17 @@ AS_IF([test x$have_gpgme = xyes],
)
AM_CONDITIONAL(USE_GPGME, test "x$have_gpgme" = xyes)
# These are needed by libcomposefs
dnl composefs won't work at all without this
AC_MSG_CHECKING([for MOUNT_ATTR_IDMAP])
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([[
#include <sys/mount.h>
int foo = MOUNT_ATTR_IDMAP;
]])],
[AC_MSG_RESULT(yes)
have_mount_attr_idmap=yes],
[AC_MSG_RESULT(no)])
dnl These are needed by libcomposefs to use the new mount API optionally
AC_MSG_CHECKING([for new mount API (fsconfig)])
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([[
@ -295,9 +305,13 @@ AC_COMPILE_IFELSE(
AC_DEFINE([HAVE_FSCONFIG_CMD_CREATE_LINUX_MOUNT_H], 1, [Define if FSCONFIG_CMD_CREATE is available in linux/mount.h])],
[AC_MSG_RESULT(no)])
composefs_default=yes
if test x"$have_mount_attr_idmap" != xyes; then
composefs_default=no
fi
AC_ARG_WITH(composefs,
AS_HELP_STRING([--with-composefs], [Support composefs]),
:, with_composefs=yes)
:, with_composefs=$composefs_default)
if test x$with_composefs != xno; then OSTREE_FEATURES="$OSTREE_FEATURES composefs";
AC_DEFINE([HAVE_COMPOSEFS], 1, [Define if we have libcomposefs])