Replace nslexer.l->nslexer.c custom rule with a -D CFLAG.

This avoids reproducing the lex logic which had dependencies set wrong
and used an intermediate file for modifying the YY_BUF_SIZE.

This has only been possible since flex 2.5.37 was imported in r250873,
which uses #ifndef YY_BUF_SIZE.

MFC after:	2 weeks
Sponsored by:	EMC / Isilon Storage Division

1 files changed, 3 insertions, 8 deletions

diff --git a/lib/libc/net/Makefile.inc b/lib/libc/net/Makefile.inc
index ed1d75f29ce4..6f51f08f236b 100644
--- a/lib/libc/net/Makefile.inc
+++ b/lib/libc/net/Makefile.inc
@@ -12,7 +12,7 @@ SRCS+=	base64.c ether_addr.c eui64.c \
 	getproto.c getprotoent.c getprotoname.c getservent.c \
 	if_indextoname.c if_nameindex.c if_nametoindex.c \
 	ip6opt.c linkaddr.c map_v4v6.c name6.c ntoh.c \
-	nsdispatch.c nslexer.c nsparser.y nss_compat.c \
+	nsdispatch.c nslexer.l nsparser.y nss_compat.c \
 	rcmd.c rcmdsh.c recv.c rthdr.c sctp_sys_calls.c send.c \
         sockatmark.c sourcefilter.c vars.c
 
@@ -34,13 +34,8 @@ CFLAGS+=-I${LIBC_SRCTOP}/resolv
 YFLAGS+=-p_nsyy
 LFLAGS+=-P_nsyy
 
-CLEANFILES+=nslexer.c nslexer.c.*
-
-nslexer.c: nslexer.l
-	${LEX} ${LFLAGS} -o${.TARGET}.tmp1 ${.IMPSRC}
-	sed -e '/YY_BUF_SIZE/s/16384/1024/' ${.TARGET}.tmp1 >${.TARGET}.tmp2
-	rm -f ${.TARGET}.tmp1
-	mv -f ${.TARGET}.tmp2 ${.TARGET}
+CFLAGS.nslexer.c= -DYY_BUF_SIZE=1024
+CFLAGS+=	${CFLAGS.${.IMPSRC:T}}
 
 MAN+=	byteorder.3 ethers.3 eui64.3 \
 	getaddrinfo.3 gai_strerror.3 gethostbyname.3 \