#!/bin/sh # Usage: version.sh <ffmpeg-root-dir> <output-version.h> <extra-version> # check for git short hash if ! test "$revision"; then if (cd "$1" && grep git RELEASE 2> /dev/null >/dev/null) ; then revision=$(cd "$1" && git describe --tags --match N 2> /dev/null) else revision=$(cd "$1" && git describe --tags --always 2> /dev/null) fi fi # Shallow Git clones (--depth) do not have the N tag: # use 'git-YYYY-MM-DD-hhhhhhh'. test "$revision" || revision=$(cd "$1" && git log -1 --pretty=format:"git-%cd-%h" --date=short 2> /dev/null) # Snapshots from gitweb are in a directory called ffmpeg-hhhhhhh or # ffmpeg-HEAD-hhhhhhh. if [ -z "$revision" ]; then srcdir=$(cd "$1" && pwd) case "$srcdir" in */ffmpeg-[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]) git_hash="${srcdir##*-}";; */ffmpeg-HEAD-[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]) git_hash="${srcdir##*-}";; esac fi # no revision number found test "$revision" || revision=$(cd "$1" && cat RELEASE 2> /dev/null) # Append the Git hash if we have one test "$revision" && test "$git_hash" && revision="$revision-$git_hash" # releases extract the version number from the VERSION file version=$(cd "$1" && cat VERSION 2> /dev/null) test "$version" || version=$revision test -n "$3" && version=$version-$3 if [ -z "$2" ]; then echo "$version" exit fi NEW_REVISION="#define FFMPEG_VERSION \"$version\"" OLD_REVISION=$(cat "$2" 2> /dev/null | head -3 | tail -1) # String used for preprocessor guard GUARD=$(echo "$2" | sed 's/\//_/' | sed 's/\./_/' | tr '[:lower:]' '[:upper:]' | sed 's/LIB//') # Update version header only on revision changes to avoid spurious rebuilds if test "$NEW_REVISION" != "$OLD_REVISION"; then cat << EOF > "$2" /* Automatically generated by version.sh, do not manually edit! */ #ifndef $GUARD #define $GUARD $NEW_REVISION #endif /* $GUARD */ EOF fi