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32 lines
1.4 KiB
Plaintext
32 lines
1.4 KiB
Plaintext
#serial 4
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# Copyright (C) 2002 Free Software Foundation, Inc.
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# This file is free software; the Free Software Foundation
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# gives unlimited permission to copy and/or distribute it,
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# with or without modifications, as long as this notice is preserved.
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AC_DEFUN([gl_BISON],
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[dnl
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dnl All this cruft, which tries to fail harmlessly when bison is not present,
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dnl will no longer be necessary after we require an Automake release 1.10 or
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dnl later, as those avoid generating .c files from .y when not in maintainer
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dnl mode. This is currently a fork from the GNULIB version of this file.
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# expand $ac_aux_dir to an absolute path
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am_aux_dir=`cd $ac_aux_dir && pwd`
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# getdate.y works with bison only.
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: ${YACC="\${SHELL} $am_aux_dir/bison-missing --run bison -y"}
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dnl
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dnl Declaring YACC & YFLAGS precious will not be necessary after GNULIB
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dnl requires an Autoconf greater than 2.59c, but it will probably still be
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dnl useful to override the description of YACC in the --help output, re
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dnl getdate.y assuming `bison -y'.
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AC_ARG_VAR(YACC,
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[The `Yet Another C Compiler' implementation to use. Defaults to `bison -y'.
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Values other than `bison -y' will most likely break on most systems.])dnl
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AC_ARG_VAR(YFLAGS,
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[YFLAGS contains the list arguments that will be passed by default to Bison.
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This script will default YFLAGS to the empty string to avoid a default value of
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`-d' given by some make applications.])dnl
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])
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