ceph/src/jaegertracing/thrift/aclocal/ac_prog_bison.m4

   1 dnl
   2 dnl Check Bison version
   3 dnl AC_PROG_BISON([MIN_VERSION=2.4])
   4 dnl
   5 dnl Will define BISON_USE_PARSER_H_EXTENSION if Automake is < 1.11
   6 dnl for use with .h includes.
   7 dnl
   8
   9 AC_DEFUN([AC_PROG_BISON], [
  10 if test "x$1" = "x" ; then
  11   bison_required_version="2.4"
  12 else
  13   bison_required_version="$1"
  14 fi
  15
  16 AC_CHECK_PROG(have_prog_bison, [bison], [yes],[no])
  17
  18 AC_DEFINE_UNQUOTED([BISON_VERSION], [0.0], [Bison version if bison is not available])
  19
  20 #Do not use *.h extension for parser header files, use newer *.hh
  21 bison_use_parser_h_extension=false
  22
  23 if test "$have_prog_bison" = "yes" ; then
  24   AC_MSG_CHECKING([for bison version >= $bison_required_version])
  25   bison_version=`bison --version | head -n 1 | cut '-d ' -f 4`
  26   AC_DEFINE_UNQUOTED([BISON_VERSION], [$bison_version], [Defines bison version])
  27   if test "$bison_version" \< "$bison_required_version" ; then
  28     BISON=:
  29     AC_MSG_RESULT([no])
  30     AC_MSG_ERROR([Bison version $bison_required_version or higher must be installed on the system!])
  31   else
  32     AC_MSG_RESULT([yes])
  33     BISON=bison
  34     AC_SUBST(BISON)
  35
  36     #Verify automake version 1.11 headers for yy files are .h, > 1.12 uses .hh
  37     automake_version=`automake --version | head -n 1 | cut '-d ' -f 4`
  38     AC_DEFINE_UNQUOTED([AUTOMAKE_VERSION], [$automake_version], [Defines automake version])
  39
  40     if test "$automake_version" \< "1.12" ; then
  41       #Use *.h extension for parser header file
  42       bison_use_parser_h_extension=true
  43       echo "Automake version < 1.12"
  44       AC_DEFINE([BISON_USE_PARSER_H_EXTENSION], [1], [Use *.h extension for parser header file])
  45     fi
  46   fi
  47 else
  48   BISON=:
  49   AC_MSG_RESULT([NO])
  50 fi
  51
  52 AM_CONDITIONAL([BISON_USE_PARSER_H_EXTENSION], [test x$bison_use_parser_h_extension = xtrue])
  53 AC_SUBST(BISON)
  54 ])