autotools: add --disable-enosys, check for linux/audit.h

Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/configure.ac b/configure.ac
index 33e5e4a68fd497dadfa079dbe9eb071d3f7be975..c302732e73489962532d31c5e851d3ed8b903f72 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -328,6 +328,7 @@ AC_CHECK_HEADERS([ \
        inttypes.h \
        lastlog.h \
        libutil.h \
+       linux/audit.h \
        linux/bpf.h \
        linux/blkzoned.h \
        linux/btrfs.h \
@@ -497,6 +498,7 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 
 dnl Convert some ac_cv_header_* variables to have_*
 dnl
+have_linux_audit_h=$ac_cv_header_linux_audit_h
 have_linux_blkzoned_h=$ac_cv_header_linux_blkzoned_h
 have_linux_btrfs_h=$ac_cv_header_linux_btrfs_h
 have_linux_capability_h=$ac_cv_header_linux_capability_h
@@ -1952,8 +1954,13 @@ UL_REQUIRES_LINUX([waitpid])
 UL_REQUIRES_SYSCALL_CHECK([waitpid], [UL_CHECK_SYSCALL([pidfd_open])], [pidfd_open])
 AM_CONDITIONAL([BUILD_WAITPID], [test "x$build_waitpid" = xyes])
 
-UL_BUILD_INIT([enosys], [check])
+AC_ARG_ENABLE([enosys],
+  AS_HELP_STRING([--disable-enosys], [do not build enosys]),
+  [], [UL_DEFAULT_ENABLE([enosys], [check])]
+)
+UL_BUILD_INIT([enosys])
 UL_REQUIRES_LINUX([enosys])
+UL_REQUIRES_HAVE([enosys], [linux_audit_h], [linux/audit.h header file])
 AS_IF([test "x$build_enosys" = xyes], [
   AC_MSG_CHECKING([for valid audit arch])
   AC_COMPILE_IFELSE(