Re: [Boost-build] Problem with include directory for generated .c file

From: Eli Green (eli_at_[hidden])
Date: 2008-02-20 16:43:00

Vladimir Prus <ghost <at> cs.msu.su> writes:

> 
> Eli Green wrote:
> 
> > I've created a generator that lets me turn .ec (Informix ESQL) into .c
> > files. This part works perfectly. The next part, actually compiling the .c
> > file, is failing because the current directory is not being searched for
> > header files. So where bjam is doing this:
> > 
> > esql -e xxx.c
> > gcc -c xxx.c
> > 
> > I want to somehow convince it to do this:
> > 
> > esql -e xxx.c
> > gcc -I. -c xxx.c
> > 
> > While I'm relatively familiar with normal Perforce Jam, bjam's build system
> > is obviously a fair bit more complex and I get the feeling I can't just
> > append "." to INCLUDE on $(<). If that IS possible, I just need to know
> > where to do it.
> 
> How is compiling of a generated file .c different from compilation of
> an ordinary .c file? If the header file is not generated,
> then the 'include' feature allows to add an include path.
> 

My ESQL rules look like this:

type.register ESQL : ec ;

generators.register-standard esql.file : ESQL : C ;

actions file
{
    "$INFORMIXDIR/bin/esql" -e $(>)
    mv $(>:B).c $(<)
}

In the environment I'm testing it in, $(<) is bin/gcc/debug/link-static/file.c
and so when the compiler is called, I get this:

g++ -o bin/gcc/debug/link-static/file.o bin/gcc/debug/link-static/file.c

However, the header file that I need to include is in the source directory. So I
need to add -I. to the command line; I guess that's <include>. as a feature. But
I'm not sure how to do that since I'm not the one generating the rule to compile
the .c file; boost.build is doing that for me.

I have tried looking at the documentation but wasn't able to find the syntax for
this.