[Boost-build] User-defined options

Subject: [Boost-build] User-defined options
From: Phil Bass (Phil.Bass_at_[hidden])
Date: 2008-10-16 06:49:25

We have a configuration-parser program that reads .txt files and 
generates .sql files. I have defined a simple bjam generator which 
invokes the parser program, but I can't get it to understand the options 
for the parser program.

Here's a stripped down sql.jam file and a trivial Jamroot that 
illustrate my problem:

# === sql.jam ===
# --- define file types
import type ;

type.register CONFIG_SRC : txt ;
type.register SQL        : sql ;

# --- define the cal-config feature
import feature : feature ;
import toolset : flags ;

feature cal-config : : path free ;

flags sql.make-SQL-file CAL_CONFIG <cal-config> ;

# --- register a .txt -> .sql generator
import generators ;

generators.register-standard make-SQL-file : CONFIG_SRC : SQL ;

actions make-SQL-file #bind CAL_CONFIG
{
    echo -o $(<) $(-c) $(CAL_CONFIG) $(>)
}

IMPORT sql : make-SQL-file : : make-SQL-file ;

# === Jamroot ===
import sql ;

# invoke the .txt -> .sql generator
sql IPSW.sql : IPSWConfig.txt : <cal-config>Config_Cal.sql ;

The value of the CAL_CONFIG variable in the make-SQL-file action is 
always empty. What am I doing wrong?

-- 
Phil Bass (phil_at_[hidden])