b3de99255c546cc4eba650d32a9deab22efc2725
[libav.git] / compat / windows / makedef
1 #!/bin/sh
2
3 # Copyright (c) 2013, Derek Buitenhuis
4 #
5 # Permission to use, copy, modify, and/or distribute this software for any
6 # purpose with or without fee is hereby granted, provided that the above
7 # copyright notice and this permission notice appear in all copies.
8 #
9 # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16
17 # mktemp isn't POSIX, so supply an implementation
18 mktemp() {
19 echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
20 }
21
22 if [ $# -lt 2 ]; then
23 echo "Usage: makedef <version_script> <objects>" >&2
24 exit 0
25 fi
26
27 vscript=$1
28 shift
29
30 if [ ! -f "$vscript" ]; then
31 echo "Version script does not exist" >&2
32 exit 1
33 fi
34
35 for object in "$@"; do
36 if [ ! -f "$object" ]; then
37 echo "Object does not exist: ${object}" >&2
38 exit 1
39 fi
40 done
41
42 # Create a lib temporarily to dump symbols from.
43 # It's just much easier to do it this way
44 libname=$(mktemp -u "library").lib
45
46 trap 'rm -f -- $libname' EXIT
47
48 lib -out:${libname} $@ >/dev/null
49 if [ $? != 0 ]; then
50 echo "Could not create temporary library." >&2
51 exit 1
52 fi
53
54 IFS='
55 '
56
57 # Determine if we're building for x86 or x86_64 and
58 # set the symbol prefix accordingly.
59 prefix=""
60 arch=$(dumpbin -headers ${libname} |
61 tr '\t' ' ' |
62 grep '^ \+.\+machine \+(.\+)' |
63 head -1 |
64 sed -e 's/^ \{1,\}.\{1,\} \{1,\}machine \{1,\}(\(...\)).*/\1/')
65
66 if [ "${arch}" = "x86" ]; then
67 prefix="_"
68 else
69 if [ "${arch}" != "ARM" ] && [ "${arch}" != "x64" ]; then
70 echo "Unknown machine type." >&2
71 exit 1
72 fi
73 fi
74
75 started=0
76 regex="none"
77
78 for line in $(cat ${vscript} | tr '\t' ' '); do
79 # We only care about global symbols
80 echo "${line}" | grep -q '^ \+global:'
81 if [ $? = 0 ]; then
82 started=1
83 line=$(echo "${line}" | sed -e 's/^ \{1,\}global: *//')
84 else
85 echo "${line}" | grep -q '^ \+local:'
86 if [ $? = 0 ]; then
87 started=0
88 fi
89 fi
90
91 if [ ${started} = 0 ]; then
92 continue
93 fi
94
95 # Handle multiple symbols on one line
96 IFS=';'
97
98 # Work around stupid expansion to filenames
99 line=$(echo "${line}" | sed -e 's/\*/.\\+/g')
100 for exp in ${line}; do
101 # Remove leading and trailing whitespace
102 exp=$(echo "${exp}" | sed -e 's/^ *//' -e 's/ *$//')
103
104 if [ "${regex}" = "none" ]; then
105 regex="${exp}"
106 else
107 regex="${regex};${exp}"
108 fi
109 done
110
111 IFS='
112 '
113 done
114
115 dump=$(dumpbin -linkermember:1 ${libname} |
116 sed -e '/public symbols/,$!d' -e '/^ \{1,\}Summary/,$d' -e "s/ \{1,\}${prefix}/ /" -e 's/ \{1,\}/ /g' |
117 tail -n +2 |
118 cut -d' ' -f3)
119
120 rm ${libname}
121
122 IFS=';'
123 list=""
124 for exp in ${regex}; do
125 list="${list}"'
126 '$(echo "${dump}" |
127 grep "^${exp}" |
128 sed -e 's/^/ /')
129 done
130
131 echo "EXPORTS"
132 echo "${list}" | sort | uniq | tail -n +2