share/genbuild.sh

   1 #!/bin/sh
   2
   3 if [ $# -gt 0 ]; then
   4     FILE="$1"
   5     shift
   6     if [ -f "$FILE" ]; then
   7         INFO="$(head -n 1 "$FILE")"
   8     fi
   9 else
  10     echo "Usage: $0 <filename>"
  11     exit 1
  12 fi
  13
  14 if [ -e "$(which git)" ]; then
  15     # clean 'dirty' status of touched files that haven't been modified
  16     git diff >/dev/null 2>/dev/null
  17
  18     # get a string like "v0.6.0-66-g59887e8-dirty"
  19     DESC="$(git describe --dirty 2>/dev/null)"
  20
  21     # get a string like "2012-04-10 16:27:19 +0200"
  22     TIME="$(git log -n 1 --format="%ci")"
  23 fi
  24
  25 if [ -n "$DESC" ]; then
  26     NEWINFO="#define BUILD_DESC \"$DESC\""
  27 else
  28     NEWINFO="// No build information available"
  29 fi
  30
  31 # only update build.h if necessary
  32 if [ "$INFO" != "$NEWINFO" ]; then
  33     echo "$NEWINFO" >"$FILE"
  34     echo "#define BUILD_DATE \"$TIME\"" >>"$FILE"
  35 fi