Use absolute paths of ragel generated headers (#467)
https://github.com/behdad/harfbuzz/issues/455
diff --git a/src/Makefile.am b/src/Makefile.am
index 145033a..0c077d9 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -253,8 +253,8 @@
.PHONY: unicode-tables arabic-table indic-table use-table built-sources
RAGEL_GENERATED = \
- $(HB_BASE_RAGEL_GENERATED_sources) \
- $(HB_OT_RAGEL_GENERATED_sources) \
+ $(patsubst %,$(srcdir)/%,$(HB_BASE_RAGEL_GENERATED_sources)) \
+ $(patsubst %,$(srcdir)/%,$(HB_OT_RAGEL_GENERATED_sources)) \
$(NULL)
BUILT_SOURCES += $(RAGEL_GENERATED)
EXTRA_DIST += \
