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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
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.
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24 24 # Use is subject to license terms.
25 25 # Copyright 2015 Igor Kozhukhov <ikozhukhov@gmail.com>
26 26 #
27 27
28 28 include $(SRC)/Makefile.master
29 29
30 30
31 31 $(__GNUC)FILES= $(MACH)_gcc_map.noexeglobs
32 32 $(__SUNC)FILES= $(MACH)_cc_map.noexeglobs
33 33
34 -$(__GNU)$(BUILD64)FILES += $(MACH64)_gcc_map.noexeglobs
34 +$(__GNUC)$(BUILD64)FILES += $(MACH64)_gcc_map.noexeglobs
35 35 $(__SUNC)$(BUILD64)FILES += $(MACH64)_cc_map.noexeglobs
36 36
37 37 SYMS1= syms.1
38 38 SYMS2= syms.2
39 39 MAIN1= main.1
40 40 MAIN2= main.2
41 41
42 42 TEMPLATE1= map.noexeglobs.1.template
43 43 TEMPLATE2= map.noexeglobs.2.template
44 44
45 45 all install: $(FILES)
46 46
47 47 lint:
48 48
49 49 clean:
50 50 $(RM) $(SYMS1) $(SYMS2) $(MAIN1) $(MAIN2)
51 51
52 52 clobber: clean
53 53 $(RM) $(FILES)
54 54
55 55 # A number of dynamic executables have their own definitions of interfaces that
56 56 # exist in system libraries. To prevent name-space pollution it is desirable
57 57 # to demote the interfaces within these executable to locals. However, various
58 58 # symbols defined by the compiler drivers crt/values files need to remain
59 59 # global in any dynamic object that includes these files. These symbols
60 60 # interpose on symbols in libc, or provide call backs for other system
61 61 # libraries. The various compiler drivers (cc and gcc), and the crt/values
62 62 # files that these drivers are configured to include, differ between the
63 63 # various compilations environments (platform, 32/64-bit). Therefore, the
64 64 # only means of creating a mapfile to demote symbols is to dynamically generate
65 65 # the mapfile for a specific compilation environment.
66 66 #
67 67 # Here, template mapfiles are used to generate a number of compilation specific
68 68 # mapfiles. These mapfiles are referenced by components of the build through
69 69 # the MAPFILE.NGB macro defined in Makefile.master. These dynamically created
70 70 # mapfiles are not delivered into the $ROOT area, and therefore are not
71 71 # delivered as packaged components of the OSNet.
72 72
73 73 $(MACH)_cc_map.noexeglobs := LINK = $(LINK.c)
74 74 $(MACH64)_cc_map.noexeglobs := LINK = $(LINK64.c)
75 75 $(MACH)_gcc_map.noexeglobs := LINK = $(LINK.c)
76 76 $(MACH64)_gcc_map.noexeglobs := LINK = $(LINK64.c)
77 77
78 78 # This generic target creates two dynamic executables from an empty "main"
79 79 # program. These objects are not executed, but are analyzed to determine the
80 80 # global symbols each provides.
81 81 #
82 82 # The first executable demotes a family of known interfaces to local and allows
83 83 # all other symbol definitions to remain global. This executables provides the
84 84 # base for discovering all symbol definitions provided by the various
85 85 # compilation environments. The second executable demotes all symbols to
86 86 # locals. Within both executables, some symbols remain globals (_end, _etext,
87 87 # etc.) as the link-editor has special knowledge of these symbols and their
88 88 # expected visibility requirements. By inspecting the deferences between the
89 89 # global symbols within the two executables, a mapfile can be generated to
90 90 # ensure the symbols defined by the compilation environments files remain
91 91 # global.
92 92
93 93 %map.noexeglobs:main.c $(TEMPLATE1) $(TEMPLATE2)
94 94 $(LINK) -o $(MAIN1) -M$(TEMPLATE1) main.c
95 95 $(ELFDUMP) -s -N.dynsym $(MAIN1) | $(EGREP) "WEAK|GLOB" | \
96 96 $(GREP) -v UNDEF | $(AWK) '{print $$9 }' | $(SORT) > $(SYMS1)
97 97 $(LINK) -o $(MAIN2) -M$(TEMPLATE2) main.c
98 98 $(ELFDUMP) -s -N.dynsym $(MAIN2) | $(EGREP) "WEAK|GLOB" | \
99 99 $(GREP) -v UNDEF | $(AWK) '{print $$9 }' | $(SORT) > $(SYMS2)
100 100 $(ECHO) "# GENERATED FILE - DO NOT EDIT" > $@
101 101 $(GREP) MAP-HEAD $(TEMPLATE2) | \
102 102 $(SED) -e "s/ *# MAP-HEAD//" >> $@
103 103 $(DIFF) $(SYMS1) $(SYMS2) | $(GREP) "^<" | \
104 104 $(SED) -e "s/^< \(.*\)/ \1;/" >> $@
105 105 $(GREP) MAP-TAIL $(TEMPLATE2) | \
106 106 $(SED) -e "s/ *# MAP-TAIL//" >> $@
107 107 $(RM) $(SYMS1) $(SYMS2) $(MAIN1) $(MAIN2)
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