pg_regress_clean_files = results/ regression.diffs regression.out tmp_check/ log/
-pg_isolation_regress_check = $(top_builddir)/src/test/isolation/pg_isolation_regress --inputdir=$(srcdir) --temp-install=./tmp_check --top-builddir=$(top_builddir) $(pg_regress_locale_flags)
-pg_isolation_regress_installcheck = $(top_builddir)/src/test/isolation/pg_isolation_regress --inputdir=$(srcdir) --top-builddir=$(top_builddir) $(pg_regress_locale_flags)
+pg_isolation_regress_check = $(top_builddir)/src/test/isolation/pg_isolation_regress --inputdir=$(srcdir) --temp-install=./tmp_check --top-builddir=$(top_builddir) $(pg_regress_locale_flags) $(EXTRA_REGRESS_OPTS)
+pg_isolation_regress_installcheck = $(top_builddir)/src/test/isolation/pg_isolation_regress --inputdir=$(srcdir) --top-builddir=$(top_builddir) $(pg_regress_locale_flags) $(EXTRA_REGRESS_OPTS)
##########################################################################
#