Is there a "makedepend" equivalent that works with GNAT?

Is there a "makedepend" equivalent that works with GNAT?

[Michael Bates]

Using GNAT 3.11b on SGI IRIX 6.5:

Because I need to integrate Ada compilation into an existing system
of makefiles which we use to compile C and Fortran source, I need 
something like "makedepend" to generate dependency rules for Ada files
to match GNAT's compilation model.

Before someone says, "just use gnatmake", let me say that there are
things I need to be able to do with the source, object, and .ali files
that gnatmake doesn't know how to do.  For example, I need the makefile
to be smart enough to try to check a file it needs (e.g., an Ada spec,
or a subunit) out of RCS if it doesn't see it in the current directory.

So my question is:  Does anyone have a script or program to generate 
such dependency rules?

Thanks,
Mike Bates
FlightSafety Simulation
Broken Arrow, OK
mikeb@ssd.fsi.com

Re: Is there a "makedepend" equivalent that works with GNAT?

[Simon Wright]

Michael Bates <mbates@ionet.net> writes:

> Because I need to integrate Ada compilation into an existing system
> of makefiles which we use to compile C and Fortran source, I need 
> something like "makedepend" to generate dependency rules for Ada files
> to match GNAT's compilation model.

gnatmake -M perhaps? for 3.10p,

   -M Check if all objects are up to date. If they are output the object
      dependences to stdout in a form that can be directly exploited
      in a `Makefile'. By default, each source file is prefixed with
      its (relative or absolute) directory name. This name is whatever
      you specified in the various -aI and -I switches. If you use
      gnatmake -M -q (see -q below), only the source file names,
      without relative paths, are output. If you just specify the -M
      switch, dependencies of the GNAT internal system files are
      omitted. This is typically what you want. If you also specify
      the -a switch, dependencies of the GNAT internal files are also
      listed. Note that dependencies of the objects in external Ada
      libraries (see switch -aLdir in the following list) are never
      reported.

Re: Is there a "makedepend" equivalent that works with GNAT?

[David C. Hoos]

Michael Bates wrote in message <3677F5DF.4D8F@ssd.fsi.com>...
>Using GNAT 3.11b on SGI IRIX 6.5:
>
>Because I need to integrate Ada compilation into an existing system
>of makefiles which we use to compile C and Fortran source, I need
>something like "makedepend" to generate dependency rules for Ada files
>to match GNAT's compilation model.
>
>Before someone says, "just use gnatmake", let me say that there are
>things I need to be able to do with the source, object, and .ali files
>that gnatmake doesn't know how to do.  For example, I need the makefile
>to be smart enough to try to check a file it needs (e.g., an Ada spec,
>or a subunit) out of RCS if it doesn't see it in the current directory.
>
>So my question is:  Does anyone have a script or program to generate
>such dependency rules?


Have you tried gnatmake -M <main-unit-name> on an up-to-date library?

Here's what the GNAT User's Guide says on the subject:

-M
Check if all objects are up to date. If they are, output the object
dependences to stdout in a form that can be directly exploited in a
`Makefile'. By default, each source file is prefixed with its (relative or
absolute) directory name. This name is whatever you specified in the
various -aI and -I switches. If you use gnatmake -M -q (see below), only the
source file names, without relative paths, are output. If you just specify
the -M switch, dependencies of the GNAT internal system files are omitted.
This is typically what you want. If you also specify the -a switch,
dependencies of the GNAT internal files are also listed. Note that
dependencies of the objects in external Ada libraries (see switch -aLdir in
the following list) are never reported.

Re: Is there a "makedepend" equivalent that works with GNAT?

[Michael Bates]

David C. Hoos wrote:
> 
> Michael Bates wrote in message <3677F5DF.4D8F@ssd.fsi.com>...
> >Using GNAT 3.11b on SGI IRIX 6.5:
> >
> >Because I need to integrate Ada compilation into an existing system
> >of makefiles which we use to compile C and Fortran source, I need
> >something like "makedepend" to generate dependency rules for Ada files
> >to match GNAT's compilation model.
> >
> >Before someone says, "just use gnatmake", let me say that there are
> >things I need to be able to do with the source, object, and .ali files
> >that gnatmake doesn't know how to do.  For example, I need the makefile
> >to be smart enough to try to check a file it needs (e.g., an Ada spec,
> >or a subunit) out of RCS if it doesn't see it in the current directory.
> >
> >So my question is:  Does anyone have a script or program to generate
> >such dependency rules?
> 
> Have you tried gnatmake -M <main-unit-name> on an up-to-date library?

Yes -- I should have mentioned that in my initial message -- and it
won't 
work for two reasons: 

1.  I need to know the dependencies so that I can make the library 
-- specifically so that I can check spec and subunit files out of 
RCS when they are needed to compile a body.

2.  The main procedure of the program I'm building is not written in 
Ada.  The Ada I'm compiling is a library of modules to be called from
legacy software.  gnatmake -M won't work unless you have a main program.

So the question remains: Is there something that does for GNAT what
makedepend does for C?

Thanks,
Mike Bates
FlightSafety Simulation
Broken Arrow, OK
mikeb@ssd.fsi.com

Re: Is there a "makedepend" equivalent that works with GNAT?

[Stephen Leake]

Michael Bates <mikeb@ssd.fsi.com> writes:

> > Have you tried gnatmake -M <main-unit-name> on an up-to-date library?
> 
> Yes -- I should have mentioned that in my initial message -- and it
> won't 
> work for two reasons: 
> 
> 1.  I need to know the dependencies so that I can make the library 
> -- specifically so that I can check spec and subunit files out of 
> RCS when they are needed to compile a body.

So use gnatmake to build the library once, run gnatmake -M, and save
the results.

> 2.  The main procedure of the program I'm building is not written in 
> Ada.  The Ada I'm compiling is a library of modules to be called from
> legacy software.  gnatmake -M won't work unless you have a main program.

Write a dummy main to force gnatmake to do what you need, then
manually delete it from the final makefile. You could probably
automate this process in your favorite scripting language.
 
> So the question remains: Is there something that does for GNAT what
> makedepend does for C?

It might be possible to modify gnatmake to not require a main; try
reading the sources. It clearly does most of what you need!

-- Stephe

Re: Is there a "makedepend" equivalent that works with GNAT?

[maegaard]

In article <3677F5DF.4D8F@ssd.fsi.com>,
  mbates@ionet.net wrote:
> Because I need to integrate Ada compilation into an existing system
> of makefiles which we use to compile C and Fortran source, I need
> something like "makedepend" to generate dependency rules for Ada files
> to match GNAT's compilation model.
>
> So my question is:  Does anyone have a script or program to generate
> such dependency rules?

You might want to take a look at Adamakegen at
http://www.ics.uci.edu/~softtest/adamakegen.html

I previously used it on a project where the build-in make facility of the Oden
Ada83 compiler did not fully meet our needs.

It is provided tailored for the VADS/SunAda but I don't recall it as major
work to target it for the Oden compiler. Whether it is suitable for an Ada95
compiler like Gnat, you will have to discover yourself.

Christian Maegaard

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