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/*
* NAME
* lex - the lex cookbook
*
* DESCRIPTION
* This cookbook describes how to work with lex files.
*
* RECIPES
* %.l: %.c make C source files from lex source files
*
* VARIABLES
* lex The lex command
* Not altered if already defined.
* lex_flags Options to pass to the lex command
* Not altered if already defined.
* The default is empty.
* lex_src lex source files in the current directory.
* dot_src Source files constructable in the current directory
* (unioned with existing setting, if necessary).
* dot_obj Object files constructable in the current directory
* (unioned with existing setting, if necessary).
* dot_clean Files which may be removed from the current directory
* in a clean target.
* dot_lint_obj Lint object files constructable in the current directory
* (unioned with existing setting, if necessary).
*
* MANIFEST: cookbook for using lex
*/
#pragma once
#include "c"
if [not [defined lex]] then
lex = lex;
if [not [defined lex_flags]] then
lex_flags = ;
lex_src = [glob *.l];
dot_src =
[stringset
[dot_src] [lex_src]
-
[fromto %.l %.c [lex_src]]
[fromto %.l %.s [lex_src]]
];
dot_obj = [stringset [dot_obj] [fromto %.l %.o [lex_src]]];
dot_clean =
[stringset
[dot_clean]
[fromto %.l %.c [lex_src]]
[fromto %.l %.ln [lex_src]]
[fromto %.l %.s [lex_src]]
lex.yy.c
];
dot_lint_obj = [stringset [dot_lint_obj] [fromto %.l %.ln [lex_src]]];
%.c: %.l
single-thread lex.yy.c
{
[lex] [lex_flags] %.l;
mv lex.yy.c %.c;
}
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