make/common/CancelImplicits.gmk

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1 #
2 # Copyright 1998-1999 Sun Microsystems, Inc. All Rights Reserved.
3 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 #
5 # This code is free software; you can redistribute it and/or modify it
6 # under the terms of the GNU General Public License version 2 only, as
7 # published by the Free Software Foundation. Sun designates this
8 # particular file as subject to the "Classpath" exception as provided
9 # by Sun in the LICENSE file that accompanied this code.
10 #
11 # This code is distributed in the hope that it will be useful, but WITHOUT
12 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 # version 2 for more details (a copy is included in the LICENSE file that
15 # accompanied this code).
16 #
17 # You should have received a copy of the GNU General Public License version
18 # 2 along with this work; if not, write to the Free Software Foundation,
19 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 #
21 # Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 # CA 95054 USA or visit www.sun.com if you need additional information or
23 # have any questions.
24 #
25
26 #
27 # Cancel some GNU make implicit rules. This causes far fewer stats
28 # (crucial in incremental builds, when all that is being done is stats -- I
29 # notice upto 20% speedup on local disk). See sections "10.2 Catalogue of
30 # Implicit Rules" and "10.5.6 Canceling Implicit Rules" in make.dvi; see
31 # also the output of gnumake -p.
32 #
33 # CAUTION! This is the first thing included in our makefiles, so you must
34 # not add any targets here. Canceling %.f: %.F doesn't make any sense
35 # because we don't have any targets ending with .f.
36 #
37
38 #
39 # We don't make binaries directly from .{source} files with implicit
40 # rules, so disable all of them.
41 #
42 ifndef USE_IMPLICITS
43 %: %.o
44 %: %.obj
45 %: %.dll
46 %: %.c
47 %: %.cc
48 %: %.C
49 %: %.p
50 %: %.f
51 %: %.s
52 %: %.F
53 %: %.r
54 %: %.S
55 %: %.mod
56 %: %.sh
57 endif
58
59 #
60 # If you are using RCS, you must set the variable USE_RCS at the make
61 # command line. Otherwise we disable RCS.
62 #
63 ifndef USE_RCS
64 %:: %,v
65 %:: RCS/%,v
66 endif

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