131 lines
4.2 KiB
Plaintext
131 lines
4.2 KiB
Plaintext
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#!/bin/sh
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set -eu
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SOURCE_DIR=$1
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MAJOR=$2
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MINOR=$3
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PATCH=$4
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VER="$MAJOR.$MINOR.$PATCH"
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update() {
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file="$SOURCE_DIR/$1"
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expr="$2"
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sed -e "$expr" "$file" > "$file.updated-version"
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if diff "$file" "$file.updated-version"; then
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rm "$file.updated-version"
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else
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# use cat > and rm instead of move to keep file permissions
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cat "$file.updated-version" > "$file"
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rm "$file.updated-version"
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fi
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}
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update 'configure.ac' 's/AC_INIT(\[tox\], \[.*\])/AC_INIT([tox], ['$VER'])/'
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update 'toxcore/tox.api.h' 's/\(const VERSION_MAJOR *= \).*;/\1'$MAJOR';/'
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update 'toxcore/tox.api.h' 's/\(const VERSION_MINOR *= \).*;/\1'$MINOR';/'
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update 'toxcore/tox.api.h' 's/\(const VERSION_PATCH *= \).*;/\1'$PATCH';/'
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update 'CMakeLists.txt' 's/\(PROJECT_VERSION_MAJOR "\).*"/\1'$MAJOR'"/'
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update 'CMakeLists.txt' 's/\(PROJECT_VERSION_MINOR "\).*"/\1'$MINOR'"/'
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update 'CMakeLists.txt' 's/\(PROJECT_VERSION_PATCH "\).*"/\1'$PATCH'"/'
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#
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# calculating the SO version
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#
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# The SO version reflects changes in the ABI compatibility of the library [1].
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# The general convention on this is that the SO version is a monotonically
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# increasing number. The major version reflects breaking changes and the minor
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# number reflect non-breaking updates [2].
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#
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# The SO version for tox libraries consists of two parts: `A.B`.
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# - incrementing A reflects an ABI breaking change.
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# - incrementing B reflects a non-ABI-breaking update. B is set to 0 when A is incremented.
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#
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# As the tox versioning scheme directly reflects ABI compatibility, we can use it
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# to construct the SO version.
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#
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# In the `0.y.z` release cycle, breaking changes are allowed in every increment of `y`,
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# so we can build the SO version just by taking `y.z`.
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# In the `x.y.z` release cycle with `x > 0` the SO version must be calculated by taking
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# the major of the tox version and add a hardcoded number that is the last A of the 0.y.z
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# release cycle.
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#
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# References:
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#
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# [1]: https://autotools.io/libtool/version.html
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# [2]: http://www.ibm.com/developerworks/linux/library/l-shlibs/index.html#N1006E
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#
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# the last major version number from the 0.x release cycle
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# this must be constant starting from the 1.0 release
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LAST_SOMAJOR=2
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if [ $MAJOR -eq 0 ]; then
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SOMAJOR=$MINOR
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SOMINOR=$PATCH
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# update lastmajor above
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update 'other/version-sync' 's/^\(LAST_SOMAJOR=\).*/\1'$SOMAJOR'/'
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else
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SOMAJOR=$(expr $MAJOR + $LAST_SOMAJOR)
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SOMINOR=$MINOR
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fi
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#
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# libtool has a quite cryptic implementation of the versioning system, which also
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# changes between systems, see https://github.com/lxde/lxqt/issues/488#issuecomment-238084222
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#
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# .so library version, following the libtool scheme:
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#
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# current:revision:age
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#
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# current: increment if interfaces have been added, removed or changed
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# revision: increment if source code has changed, set to zero if current is
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# incremented
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# age: increment if interfaces have been added, set to zero if
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# interfaces have been removed or changed
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#
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# For a full reference see:
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# https://www.gnu.org/software/libtool/manual/libtool.html#Updating-version-info
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#
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# Passing such a version string to libtool will generate the following version number
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# on the library binary file on GNU/Linux:
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#
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# (current - age).(age).(revision)
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#
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# We do not want to use a separate version numbering for the library because the package versioning is equally good:
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#
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# Semver non-breaking: 0.y.(z+1) or x.(y+1).0:
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#
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# This would mean to increment current and age, which leave the major of SOVERSION the same.
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# Revision is incremented.
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#
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# Semver breaking: 0.(y+1).0 or (x+1).0.0:
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#
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# This would mean to increment current, set age and revision to zero.
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#
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# Thus to make libtool use our version, we have to pass (major + minor):patch:minor as current:revision:age to get:
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#
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# (current - age).(age).(revision)
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# <=> (major + minor - minor).minor.patch
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# <=> major.minor.patch
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#
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if [ $MAJOR -eq 0 ]; then
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LIBTOOL_CURRENT=$(expr $SOMAJOR + $SOMINOR)
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LIBTOOL_AGE=$SOMINOR
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LIBTOOL_REVISION=0
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else
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LIBTOOL_CURRENT=$(expr $SOMAJOR + $SOMINOR)
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LIBTOOL_AGE=$SOMINOR
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LIBTOOL_REVISION=$PATCH
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fi
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update 'so.version' 's/^\(CURRENT=\).*/\1'$LIBTOOL_CURRENT'/'
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update 'so.version' 's/^\(AGE=\).*/\1'$LIBTOOL_AGE'/'
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update 'so.version' 's/^\(REVISION=\).*/\1'$LIBTOOL_REVISION'/'
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