1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
Add symbol versioning to the public LDAP libraries. This is required for
library transitions, such as the current transition from 2.1 to 2.4,
since programs will sometimes have both libraries loaded by different
dependency chains during the transition.
Not yet contributed upstream.
Upstream ITS #5365 filed requesting symbol versioning for libldap and
libber.
--- a/libraries/libldap_r/Makefile.in
+++ b/libraries/libldap_r/Makefile.in
@@ -61,6 +61,9 @@ XXLIBS = $(SECURITY_LIBS) $(LUTIL_LIBS)
XXXLIBS = $(LTHREAD_LIBS)
NT_LINK_LIBS = $(LDAP_LIBLBER_LA) $(AC_LIBS) $(SECURITY_LIBS)
UNIX_LINK_LIBS = $(LDAP_LIBLBER_LA) $(AC_LIBS) $(SECURITY_LIBS) $(LTHREAD_LIBS)
+ifneq (,$(VERSION_OPTION))
+ VERSION_FLAGS = "$(VERSION_OPTION)$(XXDIR)/libldap.map"
+endif
.links : Makefile
@for i in $(XXSRCS); do \
--- a/build/top.mk
+++ b/build/top.mk
@@ -104,6 +104,9 @@ LTFLAGS_MOD = $(@PLAT@_LTFLAGS_MOD)
# LINK_LIBS referenced in library and module link commands.
LINK_LIBS = $(MOD_LIBS) $(@PLAT@_LINK_LIBS)
+# option to pass to $(CC) to support library symbol versioning, if any
+VERSION_OPTION = @VERSION_OPTION@
+
LTSTATIC = @LTSTATIC@
LTLINK = $(LIBTOOL) --mode=link \
@@ -113,7 +116,7 @@ LTCOMPILE_LIB = $(LIBTOOL) $(LTONLY_LIB)
$(CC) $(LT_CFLAGS) $(LT_CPPFLAGS) $(LIB_DEFS) -c
LTLINK_LIB = $(LIBTOOL) $(LTONLY_LIB) --mode=link \
- $(CC) $(LT_CFLAGS) $(LDFLAGS) $(LTFLAGS_LIB)
+ $(CC) $(LT_CFLAGS) $(LDFLAGS) $(LTFLAGS_LIB) $(VERSION_FLAGS)
LTCOMPILE_MOD = $(LIBTOOL) $(LTONLY_MOD) --mode=compile \
$(CC) $(LT_CFLAGS) $(LT_CPPFLAGS) $(MOD_DEFS) -c
--- a/build/openldap.m4
+++ b/build/openldap.m4
@@ -1136,3 +1136,54 @@ AC_DEFUN([OL_SSL_COMPAT],
#endif
], [ol_cv_ssl_crl_compat=yes], [ol_cv_ssl_crl_compat=no])])
])
+
+dnl ====================================================================
+dnl check for symbol versioning support
+AC_DEFUN([OL_SYMBOL_VERSIONING],
+[AC_CACHE_CHECK([for .symver assembler directive],
+ [ol_cv_asm_symver_directive],[
+cat > conftest.s <<EOF
+${libc_cv_dot_text}
+_sym:
+.symver _sym,sym@VERS
+EOF
+if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then
+ ol_cv_asm_symver_directive=yes
+else
+ ol_cv_asm_symver_directive=no
+fi
+rm -f conftest*])
+AC_CACHE_CHECK([for ld --version-script],
+ [ol_cv_ld_version_script_option],[
+if test $ol_cv_asm_symver_directive = yes; then
+ cat > conftest.s <<EOF
+${libc_cv_dot_text}
+_sym:
+.symver _sym,sym@VERS
+EOF
+ cat > conftest.map <<EOF
+VERS_1 {
+ global: sym;
+};
+
+VERS_2 {
+ global: sym;
+} VERS_1;
+EOF
+ if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then
+ if AC_TRY_COMMAND([${CC-cc} $CFLAGS $LDFLAGS -shared
+ -o conftest.so conftest.o
+ -Wl,--version-script,conftest.map
+ 1>&AS_MESSAGE_LOG_FD]);
+ then
+ ol_cv_ld_version_script_option=yes
+ else
+ ol_cv_ld_version_script_option=no
+ fi
+ else
+ ol_cv_ld_version_script_option=no
+ fi
+else
+ ol_cv_ld_version_script_option=no
+fi
+rm -f conftest*])])
--- a/configure.in
+++ b/configure.in
@@ -1909,6 +1909,13 @@ else
fi
AC_SUBST(LTSTATIC)dnl
+VERSION_OPTION=""
+OL_SYMBOL_VERSIONING
+if test $ol_cv_ld_version_script_option = yes ; then
+ VERSION_OPTION="-Wl,--version-script="
+fi
+AC_SUBST(VERSION_OPTION)
+
dnl ----------------------------------------------------------------
if test $ol_enable_wrappers != no ; then
AC_CHECK_HEADERS(tcpd.h,[
--- /dev/null
+++ b/libraries/libldap/libldap.map
@@ -0,0 +1,7 @@
+OPENLDAP_2.4_2 {
+ global:
+ ldap_*;
+ ldif_*;
+ local:
+ *;
+};
--- a/libraries/libldap/Makefile.in
+++ b/libraries/libldap/Makefile.in
@@ -52,6 +52,9 @@ XLIBS = $(LIBRARY) $(LDAP_LIBLBER_LA) $(
XXLIBS = $(SECURITY_LIBS) $(LUTIL_LIBS)
NT_LINK_LIBS = $(LDAP_LIBLBER_LA) $(AC_LIBS) $(SECURITY_LIBS)
UNIX_LINK_LIBS = $(LDAP_LIBLBER_LA) $(AC_LIBS) $(SECURITY_LIBS)
+ifneq (,$(VERSION_OPTION))
+ VERSION_FLAGS = $(VERSION_OPTION)$(srcdir)/libldap.map
+endif
apitest: $(XLIBS) apitest.o
$(LTLINK) -o $@ apitest.o $(LIBS)
--- a/libraries/liblber/Makefile.in
+++ b/libraries/liblber/Makefile.in
@@ -38,6 +38,9 @@ XLIBS = $(LIBRARY) $(LDAP_LIBLUTIL_A)
XXLIBS =
NT_LINK_LIBS = $(AC_LIBS)
UNIX_LINK_LIBS = $(AC_LIBS)
+ifneq (,$(VERSION_OPTION))
+ VERSION_FLAGS = "$(VERSION_OPTION)$(srcdir)/liblber.map"
+endif
dtest: $(XLIBS) dtest.o
$(LTLINK) -o $@ dtest.o $(LIBS)
--- /dev/null
+++ b/libraries/liblber/liblber.map
@@ -0,0 +1,8 @@
+OPENLDAP_2.4_2 {
+ global:
+ ber_*;
+ der_alloc;
+ lutil_*;
+ local:
+ *;
+};
|
