makeversion

   1 #!/bin/sh
   2
   3 # this script creates version.cpp containing version and other compile-time
   4 # information.  it expects to get the source directory as only argument.
   5
   6 output=version.cpp
   7
   8 src=$1
   9 test "$src" = '' && src=.
  10
  11 date=`date --utc +%Y-%m-%d`
  12 if test -e "$src/.git"; then
  13         commit=`( cd "$src"; git rev-parse HEAD 2> /dev/null; )`
  14         version=`( cd "$src"; git describe --tags HEAD 2> /dev/null; ) || echo "$commit"`
  15         if test "$commit" != ''; then
  16                 ( cd "$src"; git diff --quiet HEAD; ) || { commit="$commit (dirty)"; version="$version (dirty)"; }
  17         fi
  18 fi
  19 test -z "$commit" -a -e "$src/gitcommit" && commit=`< "$src/gitcommit"`
  20 test -z "$version" -a -e "$src/version" && version=`< "$src/version"`
  21 test -z "$commit" && commit=unknown
  22 test -z "$version" && version=unknown
  23 cat > "$output-new" <<EOF
  24 #include "common.h"
  25 const char *const recorderCommit = "$commit";
  26 const char *const recorderDate = "$date";
  27 const char *const recorderVersion = "$version";
  28 EOF
  29
  30 if test -e "$output" && diff -q "$output" "$output-new" > /dev/null 2>&1; then
  31         rm "$output-new"
  32 else
  33         mv -f "$output-new" "$output"
  34 fi
  35