cancelimplicits.gmk

来自「用于移动设备上的java虚拟机源代码」· GMK 代码 · 共 54 行

#
# @(#)CancelImplicits.gmk	1.4 02/07/25 @(#)
#
# Copyright (c) 1999-2001 Sun Microsystems, Inc.  All rights reserved.
# PROPRIETARY/CONFIDENTIAL
# Use is subject to license terms.
#
#########
#
# Cancel some GNU make implicit rules.  This causes far fewer stats
# (crucial in incremental builds, when all that is being done is stats -- I
# notice upto 20% speedup on local disk). See sections "10.2 Catalogue of
# Implicit Rules" and "10.5.6 Canceling Implicit Rules" in make.dvi; see
# also the output of gnumake -p.
#
# CAUTION! This is the first thing included in our makefiles, so you must
# not add any targets here.  Canceling %.f: %.F doesn't make any sense
# because we don't have any targets ending with .f.
#

#
# We don't make binaries directly from .{source} files with implicit
# rules, so disable all of them.
#
ifndef USE_IMPLICITS
%: %.o
%: %.c
%: %.cc
%: %.C
%: %.p
%: %.f
%: %.s
%: %.F
%: %.r
%: %.S
%: %.mod
%: %.sh
endif

# If you are using RCS, you must set the variable USE_RCS at the make
# command line. Otherwise we disable RCS.
#
ifndef USE_RCS
%:: %,v
%:: RCS/%,v
endif

# If you are using SCCS, you must set the variable USE_SCCS at the make
# command line. Otherwise we disable SCCS.
#
ifndef USE_SCCS
%:: SCCS/s.%
endif