scons_gd/scons/SCons/Tool/yacc.xml

<?xml version="1.0"?>
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This file is processed by the bin/SConsDoc.py module.
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<!DOCTYPE sconsdoc [
<!ENTITY % scons SYSTEM '../../doc/scons.mod'>
%scons;
<!ENTITY % builders-mod SYSTEM '../../doc/generated/builders.mod'>
%builders-mod;
<!ENTITY % functions-mod SYSTEM '../../doc/generated/functions.mod'>
%functions-mod;
<!ENTITY % tools-mod SYSTEM '../../doc/generated/tools.mod'>
%tools-mod;
<!ENTITY % variables-mod SYSTEM '../../doc/generated/variables.mod'>
%variables-mod;
]>

<sconsdoc xmlns="http://www.scons.org/dbxsd/v1.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://www.scons.org/dbxsd/v1.0 http://www.scons.org/dbxsd/v1.0/scons.xsd">

<tool name="yacc">
<summary>
<para>
Sets construction variables for the &yacc; parse generator.
</para>
</summary>
<sets>
<item>YACC</item>
<item>YACCFLAGS</item>
<item>YACCCOM</item>
<item>YACCHFILESUFFIX</item>
<item>YACCHXXFILESUFFIX</item>
<item>YACCVCGFILESUFFIX</item>
</sets>
<uses>
<item>YACCCOMSTR</item>
<item>YACCFLAGS</item>
<item>YACC_HEADER_FILE</item>
<item>YACC_GRAPH_FILE</item>
</uses>
</tool>

<cvar name="YACC">
<summary>
<para>
The parser generator.
</para>
</summary>
</cvar>

<cvar name="YACCCOM">
<summary>
<para>
The command line used to call the parser generator
to generate a source file.
</para>
</summary>
</cvar>

<cvar name="YACCCOMSTR">
<summary>
<para>
The string displayed when generating a source file
using the parser generator.
If this is not set, then &cv-link-YACCCOM; (the command line) is displayed.
</para>

<example_commands>
env = Environment(YACCCOMSTR="Yacc'ing $TARGET from $SOURCES")
</example_commands>
</summary>
</cvar>

<cvar name="YACCFLAGS">
<summary>
<para>
General options passed to the parser generator.
In addition to passing the value on during invocation,
the &t-link-yacc; tool also examines this &consvar; for options
which cause additional output files to be generated,
and adds those to the target list.
</para>

<para>
If a <option>-d</option> option is present,
&scons; assumes that the call will also create a header file
with the suffix defined by &cv-link-YACCHFILESUFFIX;
if the yacc source file ends in a <filename>.y</filename> suffix,
or a file with the suffix defined by &cv-link-YACCHXXFILESUFFIX;
if the yacc source file ends in a <filename>.yy</filename> suffix.
</para>

<para>
If a <option>-g</option> option is present,
&scons; assumes that the call will also create a graph file
with the suffix defined by &cv-link-YACCVCGFILESUFFIX;.
</para>

<para>
If a <option>-v</option> option is present,
&scons; assumes that the call will also create an output debug file
with the suffix <filename>.output</filename>.
</para>

<para>
Also recognized are GNU &bison; options
<option>--header=</option> and its deprecated synonym
<option>--defines=</option>,
which is similar to
<option>-d</option>
but the output filename is named by the option argument;
and <option>--graph=</option>,
which is similar to
<option>-g</option>
but the output filename is named by the option argument.
</para>

<para>
Note that files specified by <option>--header=</option> and
<option>--graph=</option> may not be properly handled
by &SCons; in all situations. Consider using
&cv-link-YACC_HEADER_FILE; and &cv-link-YACC_GRAPH_FILE; instead.
</para>
</summary>
</cvar>

<cvar name="YACC_HEADER_FILE">
<summary>
<para>
If supplied, generate a header file with the name taken from this variable.
Will be emitted as a <option>--header=</option>
command-line option. Use this in preference to including
<option>--header=</option> in &cv-link-YACCFLAGS; directly.
</para>
</summary>
</cvar>

<cvar name="YACC_GRAPH_FILE">
<summary>
<para>
If supplied, write a graph of the automaton to a file with the name
taken from this variable.
Will be emitted as a <option>--graph=</option>
command-line option. Use this in preference to including
<option>--graph=</option> in &cv-link-YACCFLAGS; directly.
</para>
</summary>
</cvar>

<cvar name="YACCHFILESUFFIX">
<summary>
<para>
The suffix of the C
header file generated by the parser generator
when the
<option>-d</option>
option is used.
Note that setting this variable does not cause
the parser generator to generate a header
file with the specified suffix,
it exists to allow you to specify
what suffix the parser generator will use of its own accord.
The default value is
<filename>.h</filename>.
</para>
</summary>
</cvar>

<cvar name="YACCHXXFILESUFFIX">
<summary>
<para>
The suffix of the C++
header file generated by the parser generator
when the
<option>-d</option>
option is used.
Note that setting this variable does not cause
the parser generator to generate a header
file with the specified suffix,
it exists to allow you to specify
what suffix the parser generator will use of its own accord.
The default value is
<filename>.hpp</filename>,
except on Mac OS X,
where the default is
<filename>${TARGET.suffix}.h</filename>.
because the default &bison; parser generator just
appends <filename>.h</filename>
to the name of the generated C++ file.
</para>
</summary>
</cvar>

<cvar name="YACCVCGFILESUFFIX">
<summary>
<para>
The suffix of the file
containing the VCG grammar automaton definition
when the
<option>--graph=</option>
option is used.
Note that setting this variable does not cause
the parser generator to generate a VCG
file with the specified suffix,
it exists to allow you to specify
what suffix the parser generator will use of its own accord.
The default value is
<filename>.vcg</filename>.
</para>
</summary>
</cvar>

</sconsdoc>