1 files changed, 49 insertions, 0 deletions

diff --git a/scripts/genksyms/Makefile b/scripts/genksyms/Makefile
new file mode 100644
index 000000000000..5875f29a8602
--- /dev/null
+++ b/scripts/genksyms/Makefile
@@ -0,0 +1,49 @@
+
+hostprogs-y     := genksyms
+always          := $(hostprogs-y)
+
+genksyms-objs   := genksyms.o parse.o lex.o
+
+# -I needed for generated C source (shipped source)
+HOSTCFLAGS_parse.o := -Wno-uninitialized -I$(src)
+
+# dependencies on generated files need to be listed explicitly
+$(obj)/lex.o: $(obj)/parse.h $(obj)/keywords.c
+
+# -I needed for generated C source (shipped source)
+HOSTCFLAGS_lex.o := -I$(src)
+
+ifdef GENERATE_PARSER
+
+# gperf
+
+quiet_cmd_keywords.c = GPERF   $@
+      cmd_keywords.c = gperf -L ANSI-C -a -C -E -g -H is_reserved_hash  \
+                       -k 1,3,$$ -N is_reserved_word -p -t $< > $@
+
+$(obj)/keywords.c: $(obj)/keywords.gperf FORCE
+        $(call if_changed,keywords.c)
+
+# flex
+
+quiet_cmd_lex.c = FLEX    $@
+      cmd_lex.c = flex -o$@ -d $(filter-out FORCE,$^)
+
+$(obj)/lex.c: $(obj)/lex.l $(obj)/parse.h FORCE
+        $(call if_changed,lex.c)
+
+# bison
+
+quiet_cmd_parse.c = BISON   $@
+      cmd_parse.c = bison -o$@ -dtv $(filter-out FORCE,$^)
+
+$(obj)/parse.c: $(obj)/parse.y FORCE
+        $(call if_changed,parse.c)
+
+$(obj)/parse.h: $(obj)/parse.c ;
+
+clean-files     += parse.output
+
+endif
+
+targets += keywords.c lex.c parse.c parse.h