make -j was failing sometimesa like this
| ccache i586-poky-linux-gcc -march=i586 --sysroot=/home/nitin/build/build0/tmp/sysroots/i586-poky-linux -I. -fexpensive-optimizations -fomit-frame-pointer -frename-registers -O2 -ggdb -feliminate-unused-debug-types -o atd atd.o daemon.o  -lfl  -lpam -Wl,-O1 -Wl,--as-needed
| parsetime.l:5:19: fatal error: y.tab.h: No such file or directory
| compilation terminated.
| make: *** [lex.yy.o] Error 1
| make: *** Waiting for unfinished jobs....

Fixed the issue by adding a dependency in the makefile.
Nitin <nitin.a.kamble@intel.com>
2010/09/02

Upstream-Status: Pending

Signed-off-by: Scott Garman <scott.a.garman@intel.com>

---
 Makefile.in | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Makefile.in b/Makefile.in
index dd3c2f8..7897e45 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -82,6 +82,8 @@ y.tab.c y.tab.h: parsetime.y
 lex.yy.c: parsetime.l
 	$(LEX) -i parsetime.l
 
+parsetime.l: y.tab.h
+
 atd.service: atd.service.in
 	sed -e 's![@]sbindir[@]!$(sbindir)!g' < $< > $@
 
-- 
1.9.1