git.m6w6.name Git - awesomized/libmemcached/blob - m4/pandora_bison.m4

   1 dnl Copyright (C) 2010 Monty Taylor
   2 dnl Copyright (C) 2010 Hartmut Holzgraefe
   3 dnl This file is free software; Monty Taylor and Hartmut Holzgraefe
   4 dnl give unlimited permission to copy and/or distribute it,
   5 dnl with or without modifications, as long as this notice is preserved.
   6
   7 AC_DEFUN([_PANDORA_SEARCH_BISON],[
   8
   9   dnl --------------------------------------------------------------------
  10   dnl  Check for bison
  11   dnl --------------------------------------------------------------------
  12
  13   AC_CHECK_PROGS([YACC], ['bison -y'], [:])
  14   AS_IF([test "x$YACC" = "x:"],[
  15     pandora_have_bison=no
  16     YACC='if test -f "$@"; then echo "WARNING: no proper bison binary found, ignoring changes to $<"; exit 0; else echo "ERROR: no proper bison binary found"; exit 1; fi;'
  17     ],[
  18     pandora_have_bison=yes
  19     ])
  20
  21   AM_CONDITIONAL(HAVE_BISON, [test "x${pandora_have_bison}" = "xyes"])
  22 ])
  23
  24 AC_DEFUN([PANDORA_HAVE_BISON],[
  25   AC_REQUIRE([_PANDORA_SEARCH_BISON])
  26 ])
  27
  28 AC_DEFUN([PANDORA_REQUIRE_BISON],[
  29   AC_REQUIRE([PANDORA_HAVE_BISON])
  30   AS_IF([test "x${pandora_have_bison}" = "xno" -a "$pandora_building_from_bzr" = "yes"],
  31       AC_MSG_ERROR(["bison is required for ${PACKAGE} to build from a bzr branch"])
  32       )
  33 ])