OS2 : emx-gdb for GNAT !! How to get.. ( corrected post )

OS2 : emx-gdb for GNAT !! How to get.. ( corrected post )

[Ralph Paul]

First of all, I would like to apologize for the mistakes included in the
last post, but I do all my OS/2 gnat work at home and the time I had
available wasn t much.

Corrections are indicated with a  @  in the first column

I have successfully compiled all the examples ( including the c++
example ) but there still might be some problems in there.

I m able to make the 'Ada' examples with no problem at all, 
but with the C++ to Ada example I had to do linking myself
( no big deal - just little bit annoying, that's all )

It looks as if gnatbl isn't able to handle very long command lines, 
because it adds some wild looking characters to the name of the 
output file ( maybe because of the C++ code ? (;-) )  

gdb works o.k, also  I have to mention one  side effect :
Normally gdb can't recognize the correct Ada object structure 
( see demo2.exe ) but with the C++ inheriting example  it can !!!

@ if you like to get binary ready to run package look at the end of
@ this post

Now follows a short ' HOW TO ' summary :
----------------------------------------
	o install emx09.a including emxfix01

	o install the normal gnat of OS/2. You need to install version
	  2.00 as well as the file gnat1.exe from the 1.83 version 
	  ( Due to a 2.00 problem handling generics )
	 
	o move the 'Ada' stuff to the emx directorys :
	
	  -  the gnat* files from \bin to \emx\bin
	  -  the dirs. \examples, \gnatlib to \emx

	o get and install the gnat source files gnat-2.00-src.zip
	  - unzip , ...
	
	o now you have to recreate the GNAT runtime libs :
	
	1. The C part:
	--------------
	
	  - copy  \emx\include\stdio.h to \emx\include\gn_stdio.h
	  - edit gn_stdio.h and erase the 'static __inline' in front of
	  	putchar and getchar
	  - move the files : io-aux.c a-cio.c get_errno.c a-argv.c
	    a-exec.c a-exec.h a-time.c a-exit.c a-raise.c
		to \emx\gnatlib 
	  - cd \emx\gnatlib
	  - edit \emx\gnatlib\io-aux.c and change the 
	  	'#include <stdio.h>' to '#include <gn_stdio.h>'
@	  - edit \emx\gnatlib\a-exec.c and delete the 
@           line  #include <config.h> 
@
@	  - compile the c-files :
@		'gcc -c -O2 -DOS2 io-aux.c a-cio.c get_errno.c 
@ 		a-argv.c a-exec.c  a-exec.h a-time.c a-exit.c a-raise.c'

	  - create a lib file:	'ar rc ..\lib\gnat.a *.o' ( I'm assuming
 	    no other object files in this dir. ! )

	2. The Ada Part :
	-----------------
	  - view 'makefile.os2' and search for 'ADA_INCLUDE_SRCS' 
	  - create a new file : 'make_runtime.cmd'
	 	 - copy the text listed underneath 'ADA_INCLUDE_SRCS' :
		     ada.ads ... unchdeal.ads
	       into the file 'make_runtime.cmd'
		 - insert at the beginning of each line 
@		   'gcc -c -O2 -gnatg -gnata'
		 - save 'make_runtime.cmd'
@  disregard the following part  !!!
@	  - move gnat1.exe to gnat1_old.exe	 
@	  - now copy the gnat1.exe file from the 1.83 distribtion to
@	   \emx\bin and run
@	    'makeruntime.cmd'
@	  
@	  	!! It is important to use the old gnat1.exe because
@	    of bug in generics 
@		in the 2.00 version !!!
@	  - del gnat1.exe 
@	  - move gnat1_old.exe gnat1.exe

@ the new part replacing it :
@	  - please use gnat1.exe from the 2.00 distribtion to compile the
@           runtime files.The 2.00 version will not compile the file 
@ 	    s-explli.ads, as it fails in s-expgen.adb. If you want to 
@	    compile this file you have to use gnat1.exe from the 1.83 
@	    distr. For all the other files use the 2.00 distrb.
@		  		
@	    Don't worry about the assembler complaining about unkown 
@	    commands . The reasonis just empty assembler code ! Because
@	    the.adb file is compiled afterwards the object file will be 
@	    o.k. .
	  
	3.  The gnat Tools Part
	-----------------------
	  - get yourself a binary editor
	  - use it on 'gnatbl.exe' and 'gnatbind.exe' to search for an
	    ascii string 'obj' and replace it with 'o  ' (spaces do 
	  matter here !)

	
Finally all you have to do is set the GNAT env. variables ( see  
gnatinfo.txt), adapt the makefiles ( change .obj to .o )  and then 
start compiling all your programs  with '-g' :
	
==>	emx-gdb is now usable with OS/2 gnat

If anybody is interested in getting a ready to run emx_gnat package,
please send me mail.

@  Last night I made such a package. I will try to deposit at
@   ftp.uni-stuttgart.de://pub/progamming/Ada . It is called
@  gnatemx1.zip and gnatemx2.zip . The package will install on top of
@  normal emx09a installtion. It includes bin\gnat*, \examples, \gnatlib.
@  The examples makefile is adapted and worked fine for me.
@  ( execpt for the C++ example )


Ralph Paul

---------------------------------------------------
E-Mail : ralph@ifr.luftfahrt.uni-stuttgart.de
	 ralph.paul@studbox.uni-stuttgart.de 
---------------------------------------------------

University of Stuttgart		
Inst. of Flight Mechanics and Control
Forststrasse 86
70176 Stuttgart, Germany