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
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
# export.at -- test symbol exports -*- Autotest -*-
# Copyright (C) 2007-2008, 2011-2015 Free Software Foundation, Inc.
# Written by Ralf Wildenhues, 2007
#
# This file is part of GNU Libtool.
#
# GNU Libtool is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of
# the License, or (at your option) any later version.
#
# GNU Libtool is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNU Libtool; see the file COPYING. If not, a copy
# can be downloaded from http://www.gnu.org/licenses/gpl.html,
# or obtained by writing to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
####
AT_SETUP([Export test])
AT_KEYWORDS([libtool])
AT_CHECK([$LIBTOOL --features | $GREP 'disable shared libraries' && (exit 77)],
[1], [ignore])
AT_CHECK([eval `$LIBTOOL --config | $SED -n '/^archive_expsym_cmds=/,/^$/p'`
test -n "$archive_expsym_cmds" || echo false >can-hide
case $archive_expsym_cmds in
*-retain-symbols-file*) echo false >can-hide ;;
esac])
can_hide=:
test -s can-hide && can_hide=false
LDFLAGS="$LDFLAGS -no-undefined"
libdir=`pwd`/inst/lib
mkdir inst inst/lib
AT_DATA(a.c,
[[/* all kinds of data items */
#ifdef __cplusplus
extern "C" {
#endif
int v1;
static int v2;
int v3 = 0;
int v4 = 1;
extern const int v5, v6;
extern const char *v7;
extern const char v8[];
extern int (*const v12) (void);
const int v5 = 0;
const int v6 = 1;
const char* v7 = "\01foo";
const char v8[] = "\01bar";
int v9(void) { return v2 + 1; }
int (*v10) (void);
int (*v11) (void) = v9;
int (*const v12) (void) = v9;
typedef struct { int arr[1000]; } large;
large v13;
large v14 = { { 0 } };
large v15 = { { 1 } };
int w1 (void) { return 0; }
#ifdef __cplusplus
}
#endif
]])
AT_DATA(asyms,
[[v1
v3
v4
v5
v6
v7
v8
v9
v10
v11
v12
v13
v14
v15
]])
AT_DATA(main.c,
[[
/* w32 fun. With GCC, you can have auto-import, which will work for
* functions and non-const variables. With MSVC, you have to explicitly
* import all variables. Depending on the amount of portability, you
* need these annotations: LIBA_SCOPE for GCC, and also LIBA_SCOPE_VAR
* for MSVC. Of course you can merge both to one, this test only avoids
* that in order to expose the auto-import feature on Cygwin.
*
* For users, it's best to realize that they should not provide any
* non-function API at all.
*/
#if defined LIBA_DLL_IMPORT
# if defined _WIN32 || defined WIN32 || defined __CYGWIN__
# define LIBA_SCOPE extern __declspec(dllimport)
# if defined _MSC_VER
# define LIBA_SCOPE_VAR LIBA_SCOPE
# endif
# endif
#endif
#if !defined LIBA_SCOPE
# define LIBA_SCOPE extern
#endif
#if !defined LIBA_SCOPE_VAR
# define LIBA_SCOPE_VAR extern
#endif
#ifdef __cplusplus
extern "C" {
#endif
LIBA_SCOPE_VAR int v1;
LIBA_SCOPE_VAR int v3, v4;
LIBA_SCOPE const int v5, v6;
LIBA_SCOPE_VAR const char* v7;
LIBA_SCOPE_VAR const char v8[];
extern int v9(void);
LIBA_SCOPE_VAR int (*v10) (void);
LIBA_SCOPE_VAR int (*v11) (void);
LIBA_SCOPE int (*const v12) (void);
#ifdef __cplusplus
}
#endif
typedef struct { int arr[1000]; } large;
LIBA_SCOPE_VAR large v13, v14, v15;
int main (void)
{
char s = v7[0] + v8[0];
return s + v1 + v3 + v4 + v5 + v6 + v9() + v11() + v12()
+ v13.arr[0] + v14.arr[0] + v15.arr[0]
- 8;
}
]])
AT_DATA([broken.c],
[[
/* these symbols should not be exported */
#ifdef __cplusplus
extern "C" {
#endif
extern int w1 (void);
#ifdef __cplusplus
}
#endif
int main (void)
{
return w1 ();
}
]])
AT_CHECK([$LIBTOOL --mode=compile $CC $CPPFLAGS $CFLAGS -c a.c],[0],[ignore],[ignore])
AT_CHECK([$CC $CPPFLAGS -DLIBA_DLL_IMPORT $CFLAGS -c main.c],[0],[ignore],[ignore])
AT_CHECK([$CC $CPPFLAGS $CFLAGS -c broken.c],[0],[ignore],[ignore])
for exportsyms in '' '-export-symbols-regex "v.*"' '-export-symbols asyms'
do
# case 1: shared library built from object.
LT_AT_CHECK([eval '$LIBTOOL --mode=link $CC $CFLAGS $LDFLAGS -o liba.la a.lo \
-rpath $libdir' $exportsyms], [], [ignore], [ignore])
AT_CHECK([$LIBTOOL --mode=link $CC $CFLAGS $LDFLAGS -o main$EXEEXT main.$OBJEXT liba.la],
[], [ignore], [ignore])
LT_AT_EXEC_CHECK([./main])
if test -n "$exportsyms" && $can_hide; then
AT_CHECK([if $LIBTOOL --mode=link $CC $CFLAGS $LDFLAGS -o broken$EXEEXT broken.$OBJEXT liba.la
then (exit 1); else :; fi], [], [ignore], [ignore])
fi
# case 2: shared library built from convenience archive.
AT_CHECK([$LIBTOOL --mode=link $CC $CFLAGS $LDFLAGS -o libconv.la a.lo],
[], [ignore], [ignore])
LT_AT_CHECK([eval '$LIBTOOL --mode=link $CC $CFLAGS $LDFLAGS -o liba.la libconv.la \
-rpath $libdir' $exportsyms], [], [ignore], [ignore])
AT_CHECK([$LIBTOOL --mode=link $CC $CFLAGS $LDFLAGS -o main$EXEEXT main.$OBJEXT liba.la],
[], [ignore], [ignore])
LT_AT_EXEC_CHECK([./main])
if test -n "$exportsyms" && $can_hide; then
AT_CHECK([if $LIBTOOL --mode=link $CC $CFLAGS $LDFLAGS -o broken$EXEEXT broken.$OBJEXT liba.la
then (exit 1); else :; fi], [], [ignore], [ignore])
fi
done
AT_CHECK([$can_hide || (exit 77)])
AT_CLEANUP
|
