From e0a6a5fe8fc502a5a27a7053e90ad85077118669 Mon Sep 17 00:00:00 2001
From: steve <steve@FreeBSD.org>
Date: Sun, 3 Nov 1996 03:25:50 +0000
Subject: Add in POSIX 1003.2 mandated rules.  NOTE: these will only be enabled
 when the first non-comment line of the Makefile contains the .POSIX
 directive.

Submitted by: Joerg Wunsch <joerg@freebsd.org>
---
 share/mk/sys.mk | 94 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 93 insertions(+), 1 deletion(-)

(limited to 'share/mk')

diff --git a/share/mk/sys.mk b/share/mk/sys.mk
index 4493de0..e8b75a8 100644
--- a/share/mk/sys.mk
+++ b/share/mk/sys.mk
@@ -1,22 +1,43 @@
 #	from: @(#)sys.mk	8.2 (Berkeley) 3/21/94
-#	$Id: sys.mk,v 1.14 1996/05/28 16:20:13 phk Exp $
+#	$Id: sys.mk,v 1.16 1996/06/02 17:04:08 phk Exp $
 
 unix		?=	We run FreeBSD, not UNIX.
 
+# If the special target .POSIX appears (without prerequisites or
+# commands) before the first noncomment line in the makefile, make shall
+# process the makefile as specified by the Posix 1003.2 specification.
+# make(1) sets the special macro %POSIX in this case (to the actual
+# value "1003.2", for what it's worth).
+#
+# The rules below use this macro to distinguish between Posix-compliant
+# and default behaviour.
+
+.if defined(%POSIX)
+.SUFFIXES:	.o .c .y .l .a .sh .f
+.else
 .SUFFIXES:	.out .a .ln .o .c .cc .cxx .C .F .f .e .r .y .l .S .s .cl .p .h .sh
+.endif
 
 .LIBS:		.a
 
 X11BASE		?=	/usr/X11R6
 
 AR		?=	ar
+.if defined(%POSIX)
+ARFLAGS		?=	-rv
+.else
 ARFLAGS		?=	rl
+.endif
 RANLIB		?=	ranlib
 
 AS		?=	as
 AFLAGS		?=
 
+.if defined(%POSIX)
+CC		?=	c89
+.else
 CC		?=	cc
+.endif
 CFLAGS		?=	-O
 
 CXX		?=	c++
@@ -36,8 +57,13 @@ ECHODIR		?=	true
 .endif
 .endif
 
+.if defined(%POSIX)
+FC		?=	fort77
+FFLAGS		?=	-O 1
+.else
 FC		?=	f77
 FFLAGS		?=	-O
+.endif
 EFLAGS		?=
 
 INSTALL		?=	install
@@ -62,7 +88,71 @@ RFLAGS		?=
 SHELL		?=	sh
 
 YACC		?=	yacc
+.if defined(%POSIX)
+YFLAGS		?=
+.else
 YFLAGS		?=	-d
+.endif
+
+.if defined(%POSIX)
+# Posix 1003.2 mandated rules
+#
+# Quoted directly from the Posix 1003.2 draft, only the macros
+# $@, $< and $* have been replaced by ${.TARGET}, ${.IMPSRC}, and
+# ${.PREFIX}, resp.
+
+# SINGLE SUFFIX RULES
+.c:
+	$(CC) $(CFLAGS) $(LDFLAGS) -o ${.TARGET} ${.IMPSRC}
+
+.f:
+	$(FC) $(FFLAGS) $(LDFLAGS) -o ${.TARGET} ${.IMPSRC}
+
+.sh:
+	cp ${.IMPSRC} ${.TARGET}
+	chmod a+x ${.TARGET}
+
+# DOUBLE SUFFIX RULES
+
+.c.o:
+	$(CC) $(CFLAGS) -c ${.IMPSRC}
+
+.f.o:
+	$(FC) $(FFLAGS) -c ${.IMPSRC}
+
+.y.o:
+	$(YACC) $(YFLAGS) ${.IMPSRC}
+	$(CC) $(CFLAGS) -c y.tab.c
+	rm -f y.tab.c
+	mv y.tab.o ${.TARGET}
+
+.l.o:
+	$(LEX) $(LFLAGS) ${.IMPSRC}
+	$(CC) $(CFLAGS) -c lex.yy.c
+	rm -f lex.yy.c
+	mv lex.yy.o ${.TARGET}
+
+.y.c:
+	$(YACC) $(YFLAGS) ${.IMPSRC}
+	mv y.tab.c ${.TARGET}
+
+.l.c:
+	$(LEX) $(LFLAGS) ${.IMPSRC}
+	mv lex.yy.c ${.TARGET}
+
+.c.a:
+	$(CC) -c $(CFLAGS) ${.IMPSRC}
+	$(AR) $(ARFLAGS) ${.TARGET} ${.PREFIX}.o
+	rm -f ${.PREFIX}.o
+
+.f.a:
+	$(FC) -c $(FFLAGS) ${.IMPSRC}
+	$(AR) $(ARFLAGS) ${.TARGET} ${.PREFIX}.o
+	rm -f ${.PREFIX}.o
+
+.else
+
+# non-Posix rule set
 
 .c:
 	${CC} ${CFLAGS} ${LDFLAGS} ${.IMPSRC} ${LDLIBS} -o ${.TARGET}
@@ -127,6 +217,8 @@ YFLAGS		?=	-d
 	${CC} ${CFLAGS} ${LDFLAGS} ${.PREFIX}.tmp.c ${LDLIBS} -ll -o ${.TARGET}
 	rm -f ${.PREFIX}.tmp.c
 
+.endif
+
 .include <bsd.own.mk>
 
 .if exists(/etc/make.conf)
-- 
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