-grep '^[ ]*AC_CONFIG_AUX_DIR('$build_aux')' configure.ac >/dev/null ||
- {
- echo "$0: expected line not found in configure.ac. Add the following:" >&2
- echo " AC_CONFIG_AUX_DIR($build_aux)" >&2.
- }
+found_aux_dir=no
+grep '^[ ]*AC_CONFIG_AUX_DIR(\['"$build_aux"'\])' configure.ac \
+ >/dev/null && found_aux_dir=yes
+grep '^[ ]*AC_CONFIG_AUX_DIR('"$build_aux"')' configure.ac \
+ >/dev/null && found_aux_dir=yes
+if test $found_aux_dir = no; then
+ echo "$0: expected line not found in configure.ac. Add the following:" >&2
+ echo " AC_CONFIG_AUX_DIR([$build_aux])" >&2.
+fi