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btrfs-progs: configure: check if xmlto exists at configure time

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AC_PATH_PROG won't fail even if it fails to find command path.
xmlto is required for document build and we should report error
if it doesn't exist at configure time.

Signed-off-by: Tomohiro Misono <misono.tomohiro@jp.fujitsu.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Misono Tomohiro 2018-04-11 17:29:00 +09:00 committed by David Sterba
parent 944974b485
commit 3491d62778
1 changed files with 5 additions and 1 deletions
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6
configure.ac
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@ -93,7 +93,11 @@ AC_SUBST([DISABLE_DOCUMENTATION])
dnl detect tools to build documentation
ASCIIDOC_TOOL="none"
if test "x$enable_documentation" = xyes; then
AC_PATH_PROG([XMLTO], [xmlto], [xmlto])
AC_PATH_PROG([XMLTO], [xmlto])
if test -z "$XMLTO"; then
AC_MSG_ERROR([cannot find xmlto, cannot build documentation])
fi
AC_PATH_PROG([GZIP], [gzip], [gzip])
AC_PATH_PROG([MV], [mv], [mv])
AC_PROG_SED