version.sh: use standard sed syntax
[libav.git] / version.sh
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1#!/bin/sh
2
123103ca 3# check for SVN revision number
2b229186 4revision=$(cat snapshot_version 2> /dev/null)
10671cf5 5test $revision || revision=$(cd "$1" && LC_ALL=C svn info 2> /dev/null | grep Revision | cut -d' ' -f2)
d33a14e4 6test $revision || revision=$(cd "$1" && grep revision .svn/entries 2>/dev/null | cut -d '"' -f2)
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7test $revision || revision=$(cd "$1" && sed -n -e '/^dir$/{n
8p
9q
10}' .svn/entries 2>/dev/null)
123103ca 11test $revision && revision=SVN-r$revision
a66d63a9 12
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13# check for git short hash
14if ! test $revision; then
d33a14e4 15 revision=$(cd "$1" && git log -1 --pretty=format:%h)
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16 test $revision && revision=git-$revision
17fi
18
de2c2b5a 19# no revision number found
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20test $revision || revision=UNKNOWN
21
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22# releases extract the version number from the VERSION file
23version=$(cat VERSION 2> /dev/null)
24test $version || version=$revision
ac63af34 25
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26test -n "$3" && version=$version-$3
27
28NEW_REVISION="#define FFMPEG_VERSION \"$version\""
d33a14e4 29OLD_REVISION=$(cat version.h 2> /dev/null)
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30
31# Update version.h only on revision changes to avoid spurious rebuilds
32if test "$NEW_REVISION" != "$OLD_REVISION"; then
9e6165b5 33 echo "$NEW_REVISION" > "$2"
f1cc88a5 34fi