In parallel out-of-tree builds it's possible that tools/*.rules are generated before the target directory has been implicitly created. Solve this by creating the directory before writing into it. --- Makefile.am | 1 + 1 file changed, 1 insertion(+) diff --git a/Makefile.am b/Makefile.am index 2ac28b23d..e7bcd2366 100644 --- a/Makefile.am +++ b/Makefile.am @@ -589,6 +589,7 @@ src/builtin.h: src/genbuiltin $(builtin_sources) $(AM_V_GEN)$(srcdir)/src/genbuiltin $(builtin_modules) > $@ tools/%.rules: + $(AM_V_at)$(MKDIR_P) tools $(AM_V_GEN)cp $(srcdir)/$(subst 97-,,$@) $@ $(lib_libbluetooth_la_OBJECTS): $(local_headers) -- 2.20.1