Re: ada/9953: Unsatisfied symbols: U_prep_frame_rec_for_unwind (code)

[Olivier Hainque <hainque@ACT-Europe.FR>]

The following reply was made to PR ada/9953; it has been noted by GNATS.

From: Olivier Hainque <hainque@ACT-Europe.FR>
To: dave.anglin@nrc-cnrc.gc.ca
Cc: gcc-gnats@gcc.gnu.org, hainque@ACT-Europe.FR, bosch@gnat.com
Subject: Re: ada/9953: Unsatisfied symbols: U_prep_frame_rec_for_unwind (code)
Date: Thu, 13 Mar 2003 17:06:38 +0100

 dave.anglin@nrc-cnrc.gc.ca wrote:
 > cd ada/doctools && gnatmake -q xgnatug
 > /usr/ccs/bin/ld: Unsatisfied symbols:
 >    U_prep_frame_rec_for_unwind (code)
 
  As indicated on other channels, this is because the GNAT run-time library
  references functions from the system unwinding library (for call-chain
  computation purposes), and this specific one is not provided on HPUX 10.
 
  The patch below should fix this.
 
  Bootstrapped against 3.3 on hppa1.1-hp-hpux11.00, and checked that
  the rest of the build goes fine on this target, with the symlinks 
  setup properly during the GNAT run-time library build. Performed a
  couple of simple tests with the resulting compiler installed.
 
  I checked that the symlinks are also setup as expected for a hpux10.20
  target (cross configuration), but I don't have a 10.20 machine at hand to
  test this further.
 
  Could you please check if it indeed fixes your problem ?
 
  Thanks in advance,
 
  Olivier
 
 --
 
 *** gcc/ada/Makefile.in.ori	Mon Mar  3 09:49:49 2003
 --- gcc/ada/Makefile.in	Thu Mar 13 10:59:47 2003
 *************** ifeq ($(strip $(filter-out hppa% hp hpux
 *** 759,771 ****
     s-osinte.ads<53osinte.ads \
     s-parame.ads<5hparame.ads \
     s-osprim.adb<7sosprim.adb \
 -   s-traceb.adb<5htraceb.adb \
     s-taprop.adb<7staprop.adb \
     s-taspri.ads<7staspri.ads \
     s-tpopsp.adb<5atpopsp.adb \
     g-soccon.ads<3hsoccon.ads \
     system.ads<5hsystem.ads
   
     TGT_LIB = /usr/lib/libcl.a -lpthread
     THREADSLIB = -lpthread -lc_r
     SYMLIB = -laddr2line -lbfd $(INTLLIBS)
 --- 759,779 ----
     s-osinte.ads<53osinte.ads \
     s-parame.ads<5hparame.ads \
     s-osprim.adb<7sosprim.adb \
     s-taprop.adb<7staprop.adb \
     s-taspri.ads<7staspri.ads \
     s-tpopsp.adb<5atpopsp.adb \
     g-soccon.ads<3hsoccon.ads \
     system.ads<5hsystem.ads
   
 +   # An HPUX specific s-traceb.adb shall be used for traceback support.
 +   # It resorts to functions provided by the system unwinding library,
 +   # some of which are not available in HPUX 10, so fallback to the default
 +   # implementation in this case. The block below expresses this as "if not
 +   # hpux10, use the dedicated s-traceb.adb".
 +   ifneq ($(strip $(filter-out hppa% hp hpux10%,$(targ))),)
 +   LIBGNAT_TARGET_PAIRS += s-traceb.adb<5htraceb.adb
 +   endif
 + 
     TGT_LIB = /usr/lib/libcl.a -lpthread
     THREADSLIB = -lpthread -lc_r
     SYMLIB = -laddr2line -lbfd $(INTLLIBS)