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--- old/usr/src/common/mapfiles/gen/Makefile
+++ new/usr/src/common/mapfiles/gen/Makefile
1 1 #
2 2 # CDDL HEADER START
3 3 #
4 4 # The contents of this file are subject to the terms of the
5 5 # Common Development and Distribution License (the "License").
6 6 # You may not use this file except in compliance with the License.
7 7 #
8 8 # You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 # or http://www.opensolaris.org/os/licensing.
10 10 # See the License for the specific language governing permissions
11 11 # and limitations under the License.
12 12 #
13 13 # When distributing Covered Code, include this CDDL HEADER in each
14 14 # file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 # If applicable, add the following below this CDDL HEADER, with the
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16 16 # fields enclosed by brackets "[]" replaced with your own identifying
17 17 # information: Portions Copyright [yyyy] [name of copyright owner]
18 18 #
19 19 # CDDL HEADER END
20 20 #
21 21
22 22 #
23 23 # Copyright 2007 Sun Microsystems, Inc. All rights reserved.
24 24 # Use is subject to license terms.
25 25 #
26 -# ident "%Z%%M% %I% %E% SMI"
27 -#
28 26
29 27 include $(SRC)/Makefile.master
30 28
31 29 FILES= \
32 30 $(MACH)_cc_map.noexeglobs \
33 31 $(MACH)_gcc_map.noexeglobs
34 32
35 33 $(BUILD64)FILES += \
36 34 $(MACH64)_cc_map.noexeglobs \
37 35 $(MACH64)_gcc_map.noexeglobs
38 36
39 37 SYMS1= syms.1
40 38 SYMS2= syms.2
41 39 MAIN1= main.1
42 40 MAIN2= main.2
43 41
44 42 TEMPLATE1= map.noexeglobs.1.template
45 43 TEMPLATE2= map.noexeglobs.2.template
46 44
47 45 all install: $(FILES)
48 46
49 47 lint:
50 48
51 49 clean:
52 50 $(RM) $(SYMS1) $(SYMS2) $(MAIN1) $(MAIN2)
53 51
54 52 clobber: clean
55 53 $(RM) $(FILES)
56 54
57 55 # A number of dynamic executables have their own definitions of interfaces that
58 56 # exist in system libraries. To prevent name-space pollution it is desirable
59 57 # to demote the interfaces within these executable to locals. However, various
60 58 # symbols defined by the compiler drivers crt/values files need to remain
61 59 # global in any dynamic object that includes these files. These symbols
62 60 # interpose on symbols in libc, or provide call backs for other system
63 61 # libraries. The various compiler drivers (cc and gcc), and the crt/values
64 62 # files that these drivers are configured to include, differ between the
65 63 # various compilations environments (platform, 32/64-bit). Therefore, the
66 64 # only means of creating a mapfile to demote symbols is to dynamically generate
67 65 # the mapfile for a specific compilation environment.
68 66 #
69 67 # Here, template mapfiles are used to generate a number of compilation specific
70 68 # mapfiles. These mapfiles are referenced by components of the build through
71 69 # the MAPFILE.NGB macro defined in Makefile.master. These dynamically created
72 70 # mapfiles are not delivered into the $ROOT area, and therefore are not
73 71 # delivered as packaged components of the OSNet.
74 72
75 73 $(MACH)_cc_map.noexeglobs := LINK = $(LINK.c)
76 74 $(MACH64)_cc_map.noexeglobs := LINK = $(LINK64.c)
77 75
78 76 $(MACH)_gcc_map.noexeglobs := CC = $(ONBLD_TOOLS)/bin/$(MACH)/cw -_gcc
79 77 $(MACH)_gcc_map.noexeglobs := LINK = $(LINK.c)
80 78 $(MACH64)_gcc_map.noexeglobs := CC = $(ONBLD_TOOLS)/bin/$(MACH)/cw -_gcc
81 79 $(MACH64)_gcc_map.noexeglobs := LINK = $(LINK64.c)
82 80
83 81 # This generic target creates two dynamic executables from an empty "main"
84 82 # program. These objects are not executed, but are analyzed to determine the
85 83 # global symbols each provides.
86 84 #
87 85 # The first executable demotes a family of known interfaces to local and allows
88 86 # all other symbol definitions to remain global. This executables provides the
89 87 # base for discovering all symbol definitions provided by the various
90 88 # compilation environments. The second executable demotes all symbols to
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91 89 # locals. Within both executables, some symbols remain globals (_end, _etext,
92 90 # etc.) as the link-editor has special knowledge of these symbols and their
93 91 # expected visibility requirements. By inspecting the deferences between the
94 92 # global symbols within the two executables, a mapfile can be generated to
95 93 # ensure the symbols defined by the compilation environments files remain
96 94 # global.
97 95
98 96 %map.noexeglobs:main.c $(TEMPLATE1) $(TEMPLATE2)
99 97 $(LINK) -o $(MAIN1) -M$(TEMPLATE1) main.c
100 98 $(ELFDUMP) -s -N.dynsym $(MAIN1) | $(EGREP) "WEAK|GLOB" | \
101 - $(GREP) -v UNDEF | $(NAWK) '{print $$9 }' | $(SORT) > $(SYMS1)
99 + $(GREP) -v UNDEF | $(AWK) '{print $$9 }' | $(SORT) > $(SYMS1)
102 100 $(LINK) -o $(MAIN2) -M$(TEMPLATE2) main.c
103 101 $(ELFDUMP) -s -N.dynsym $(MAIN2) | $(EGREP) "WEAK|GLOB" | \
104 - $(GREP) -v UNDEF | $(NAWK) '{print $$9 }' | $(SORT) > $(SYMS2)
102 + $(GREP) -v UNDEF | $(AWK) '{print $$9 }' | $(SORT) > $(SYMS2)
105 103 $(ECHO) "# GENERATED FILE - DO NOT EDIT" > $@
106 104 $(GREP) MAP-HEAD $(TEMPLATE2) | \
107 105 $(SED) -e "s/ *# MAP-HEAD//" >> $@
108 106 $(DIFF) $(SYMS1) $(SYMS2) | $(GREP) "^<" | \
109 107 $(SED) -e "s/^< \(.*\)/ \1;/" >> $@
110 108 $(GREP) MAP-TAIL $(TEMPLATE2) | \
111 109 $(SED) -e "s/ *# MAP-TAIL//" >> $@
112 110 $(RM) $(SYMS1) $(SYMS2) $(MAIN1) $(MAIN2)
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