source4/build/make/lex_compile.sh

   1 #!/bin/sh
   2
   3 LEX="$1"
   4 SRC="$2"
   5 DEST="$3"
   6 shift 3
   7 ARGS="$*"
   8
   9 dir=`dirname $SRC`
  10 file=`basename $SRC`
  11 base=`basename $SRC .l`
  12 if [ -z "$LEX" ]; then
  13         # if $DEST is more recent than $SRC, we can just touch
  14         # otherwise we touch but print out warnings
  15         if [ -r $DEST ]; then
  16                 if [ x`find $SRC -newer $DEST -print` = x$SRC ]; then
  17                         echo "warning: lex not found - cannot generate $SRC => $DEST" >&2
  18                         echo "warning: lex not found - only updating the timestamp of $DEST" >&2
  19                 fi
  20                 touch $DEST;
  21                 exit;
  22         fi
  23         echo "error: lex not found - cannot generate $SRC => $DEST" >&2
  24         exit 1;
  25 fi
  26 # if $DEST is more recent than $SRC, we can just touch
  27 if [ -r $DEST ]; then
  28         if [ x`find $SRC -newer $DEST -print` != x$SRC ]; then
  29                 touch $DEST;
  30                 exit;
  31         fi
  32 fi
  33 TOP=`pwd`
  34 echo "info: running $LEX $ARGS $file"
  35 if cd $dir && $LEX $ARGS $file; then
  36         if [ -r lex.yy.c ];then
  37                 # we must guarantee that config.h comes first
  38                 echo "info: move lex.yy.c to $base.c"
  39                 echo "#include \"config.h\"" > $base.c
  40                 sed -e "s|lex\.yy\.c|$DEST|" lex.yy.c >> $base.c
  41                 rm -f $base.yy.c
  42         elif [ -r $base.yy.c ];then
  43                 # we must guarantee that config.h comes first
  44                 echo "info: move $base.yy.c to $base.c"
  45                 echo "#include \"config.h\"" > $base.c
  46                 sed -e "s|$base\.yy\.c|$DEST|" $base.yy.c >> $base.c
  47                 rm -f $base.yy.c
  48         elif [ -r $base.c ];then
  49                 # we must guarantee that config.h comes first
  50                 echo "info: add #include \"config.h\" to $base.c"
  51                 mv $base.c $base.c.tmp
  52                 echo "#include \"config.h\"" > $base.c
  53                 sed -e "s|$base\.yy\.c|$DEST|" $base.c.tmp >> $base.c
  54                 rm -f $base.c.tmp
  55         elif [ ! -r base.c ]; then
  56                 echo "$base.c nor $base.yy.c nor lex.yy.c generated."
  57                 exit 1
  58         fi
  59 fi
  60 cd $TOP