Re: Building a minimal-source-code Ada library with GNAT

[Michael Card <thehouseofcards@remove.this.part.mac.com>]

Chris-

Thanks for the suggestions. The use of -I vs -A didn't change anything
for me, but I did figure out how to do this. 

As it turns out, the crucial step I was missing was that my .o and .ali
files had to be created as the resulting of LINKING one or more
applications that used the top-level packages. So, the steps I followed
were:

1. I ran gnatmake a few times to build several applications, so that as
a result all of the top-level packages would be used (i.e. all of the
top-level public generics would be instantiated), i.e.

gnatmake -g -gnatE my_application -I /path_to_my_app_source
-I/path_to_lib1_source -I/path_to_lib2_source -largs -lsocket -lnsl

gnatmake -g -gnatE my_application_2 -I /path_to_my_app_source
-I/path_to_lib1_source -I/path_to_lib2_source -largs -lsocket -lnsl

2. Next, I created subdirectories to hold the .o files and the .ali
files that would be put into the Ada libraries

3. I moved the .o and .ali files into their respective subdirectories.
I did as you suggested and did a chmod 444 to make the .ali files
read-only.

4. I created an object archive of all of the .o files in the library
subdirectories using ar, then deleted the .o files. The archives had
the usual naming convention, i.e. lib<Adalib_name>.a

5. I used cp -p to copy the necessary .ads and .adb files into the
library subdirectories, leaving out the source code that was not needed
for compilation that I wanted to "hide" from users of the libraries

6. After doing these things, I cleaned (rm *.*) the directory where I
initially build the applications, and I was able to build and run them
successfully using my new GNAT Ada libraries like this:

gnatmake -g -gnatE my_application -I /path_to_my_app_source
-I/path_to_Adalib_1 -I/path_to_Adalib_2 -L/path_to_Adalib_1
-L/path_to_Adalib_2 -largs -lsocket -lnsl -lAdalib1_name -lAdalib2_name

- Mike

In article <mailman.1015573982.10301.comp.lang.ada@ada.eu.org>,
Christoph Grein <christoph.grein@eurocopter.com> wrote:

> > and still got this error. For the gnatmake, I used the -A<path to Ada
> > library> option to point to these Ada libraries, as it looked like this
> > was what I should use. For example:
> > 
> > gnatmake -g -gnatE my_application -A/path_to_library
> > -A/path_to_library_2 -largs -lsocket -lnsl
> 
> See the "Search Paths and the Run-Time Library (RTL)" section in Gnat UG. The
> correct 
> switch is -Idir. Also make the ALI files read only.