[Bug ada/34284] New: Missing dynamic library support for GNAT 4.3.0 on x86-*-Darwin8

["bechir dot zalila at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

Hi,

* Detailed description:
=======================

The file gcc/trunk/gnattools/configure.ac contains the definition of the
variable TOOLS_TARGET_PAIRS for each supported target. The x86-darwin case is 
missing which results in using the default file mlib-tgt-specific.adb when
building GNAT for this platform. This file does not implement dynamic library
support.

The patch given at the end of this report solves the problem.

* How to reproduce the bug:
===========================

I did not succeed to attach files to this bug report, thus I will give 
them here as plain text. They are very short:

SPEC (p.ads):
=============

package P is

   procedure Dummy;

end P;

BODY (p.adb):
=============

package body P is

   -----------
   -- Dummy --
   -----------

   procedure Dummy is
   begin
      null;
   end Dummy;

end P;

PROJECT FILE (not_working_project.gpr):
=======================================

project Not_Working_Project is

   for Source_Files use ("p.ads", "p.adb");
   for Library_Name use "my_lib";
   for Library_Dir use "./libs";
   for Object_Dir use "./objects";
   for Library_Kind use "relocatable";

end Not_Working_Project;

COMMAND LINE:
=============

gnatmake -p -P not_working_project.gpr

EXPECTED BEHAVIOR:
==================

object directory "/Volumes/Stock/Dev/gnat_bug_report/./objects" created
library directory "/Volumes/Stock/Dev/gnat_bug_report/./libs" created
gcc -c -fPIC -I- -gnatA /Volumes/Stock/Dev/gnat_bug_report/p.adb

building relocatable library for project not_working_project
/usr/local/gnat-430/bin/gcc -dynamiclib -o
/Volumes/Stock/Dev/gnat_bug_report/libs/libmy_lib.dylib
-L/usr/local/gnat-430/lib/gcc/i686-apple-darwin8/4.3.0/adalib/ -fPIC
-L/usr/local/gnat-430/lib/gcc/i686-apple-darwin8/4.3.0/adalib/ -lgnat-4.3
-Wl,-flat_namespace -shared-libgcc
/Volumes/Stock/Dev/gnat_bug_report/objects/p.o

If we do an ls libs, we should get:

libmy_lib.dylib p.ali

ACTUAL BEHAVIOR:
================

object directory "/Volumes/Stock/Dev/gnat_bug_report/./objects" created
library directory "/Volumes/Stock/Dev/gnat_bug_report/./libs" created
not_working_project.gpr:4:25: warning: libraries are not supported on this
platform
gcc -c -I- -gnatA /Volumes/Stock/Dev/gnat_bug_report/p.adb

And there the 'libs' directory is empty

Here is my system configuration:

* the exact version of GCC, as shown by "gcc -v";

Using built-in specs.
Target: i686-apple-darwin8
Configured with: ../gcc_trunk/configure --disable-nls
--prefix=/Volumes/Stock/dev/gcc-4.3_trunk --host=i686-apple-darwin8
--target=i686-apple-darwin8 --build=i686-apple-darwin8 --enable-languages=c,ada
--with-gmp=/opt/local
Thread model: posix
gcc version 4.3.0 20071119 (experimental) (GCC)

* the system type (uname -a);

Darwin xxxxxxxxx.xxxx.xx 8.11.1 Darwin Kernel Version 8.11.1: Wed Oct 10
18:23:28 PDT 2007; root:xnu-792.25.20~1/RELEASE_I386 i386 i386

* the options when GCC was configured/built;

../gcc_trunk/configure --disable-nls --prefix=/Volumes/Stock/dev/gcc-4.3_trunk
--host=i686-apple-darwin8 --target=i686-apple-darwin8
--build=i686-apple-darwin8 --enable-languages=c,ada --with-gmp=/opt/local

* Patchfile that solves the problem (produced using svn diff from
gcc/trunk/gcc):

---------------------------------------------------------------
2007-11-29  Bechir Zalila  <bechir.zalila@enst.fr>

        * gnattools/configure.ac: Added a missing switch case for 
        *86-*-darwin* when defining the value of TOOLS_TARGET_PAIRS.

        * gnattools/configure: regenerated

=============================================================================
Index: gnattools/configure
===================================================================
--- gnattools/configure (revision 130291)
+++ gnattools/configure (working copy)
@@ -1667,7 +1667,7 @@
     indepsw.adb<indepsw-mingw.adb"
     EXTRA_GNATTOOLS='../../gnatdll$(exeext)'
     ;;
-  powerpc-*-darwin*)
+  powerpc-*-darwin* | *86-*-darwin*)
     TOOLS_TARGET_PAIRS="mlib-tgt-specific.adb<mlib-tgt-darwin.adb"
     ;;
   *-*-lynxos)
Index: gnattools/configure.ac
===================================================================
--- gnattools/configure.ac      (revision 130291)
+++ gnattools/configure.ac      (working copy)
@@ -150,7 +150,7 @@
     indepsw.adb<indepsw-mingw.adb"
     EXTRA_GNATTOOLS='../../gnatdll$(exeext)'
     ;;
-  powerpc-*-darwin*)
+  powerpc-*-darwin* | *86-*-darwin*)
     TOOLS_TARGET_PAIRS="mlib-tgt-specific.adb<mlib-tgt-darwin.adb"
     ;;
   *-*-lynxos)


-- 
           Summary: Missing dynamic library support for GNAT 4.3.0 on x86-*-
                    Darwin8
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ada
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: bechir dot zalila at gmail dot com
 GCC build triplet: i686-apple-darwin8
  GCC host triplet: i686-apple-darwin8
GCC target triplet: i686-apple-darwin8


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34284