X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvppapigen.am;h=fe9ff03ecabbf00422f1983704b7a3b8aa26733f;hb=b592ad758a10ad9a9cf8d4223b62eae2cf0515a1;hp=3207c83a3250b8b7c595be819cd8b9e9a08b8a83;hpb=0be5ec304d2d4cfc6faecbb519ef165d9ab5d34e;p=vpp.git

diff --git a/src/vppapigen.am b/src/vppapigen.am
index 3207c83a325..fe9ff03ecab 100644
--- a/src/vppapigen.am
+++ b/src/vppapigen.am
@@ -13,18 +13,17 @@
 
 bin_PROGRAMS += vppapigen
 
-# We cannot rely on BUILT_SOURCES here as other built sources are relying
-# on vppapigen, so make can start compiling lex.c before gram.h is created.
-# This way we introduce new dependency by running C preprocessor.
-
-tools/vppapigen/lex_e.c: tools/vppapigen/lex.c tools/vppapigen/gram.y
+tools/vppapigen/gram.h: tools/vppapigen/gram.y
 	@$(YACC) -d @srcdir@/tools/vppapigen/gram.y
 	@mv y.tab.h tools/vppapigen/gram.h
 	@rm y.tab.c
-	@$(CC) -I. -E -o $@ $<
 
-vppapigen_SOURCES = tools/vppapigen/gram.y tools/vppapigen/lex_e.c tools/vppapigen/node.c
+tools/vppapigen/lex.o: tools/vppapigen/gram.h
+tools/vppapigen/node.o: tools/vppapigen/gram.h
+
+vppapigen_SOURCES = tools/vppapigen/gram.y tools/vppapigen/lex.c tools/vppapigen/node.c
 vppapigen_LDADD = libvppinfra.la
 vppapigen_LDFLAGS = -static
 
+CLEANFILES += tools/vppapigen/gram.c tools/vppapigen/gram.h
 # vi:syntax=automake