I recently set up a bi-arch environment on i686-unknown-linux-gnu with
--enable-targets=all to check which of a couple of problems I'm seeing
on i386-pc-solaris2.1? are Solaris specific and which are generic. When
trying to bootstrap such a compiler with all languages, Ada bootstrap
failed compiling the 64-bit libada:
$ /var/gcc/regression/trunk/2.6.18-gcc-gas-gld-32/build/./gcc/xgcc
-B/var/gcc/regression/trunk/2.6.18-gcc-gas-gld-32/build/./gcc/
-B/vol/gcc/i686-unknown-linux-gnu/bin/ -B/vol/gcc/i686-unknown-linux-gnu/lib/
-isystem /vol/gcc/i686-unknown-linux-gnu/include -isystem
/vol/gcc/i686-unknown-linux-gnu/sys-include -c -g -O2 -m64 -fpic -W -Wall
-gnatpg -nostdinc -m64 a-finali.adb -o a-finali.o
a-finali.ads:64:09: alignment for "Controlledb64s" must be at least 8
a-finali.ads:64:09: alignment for "Controlledr62s" must be at least 8
a-finali.ads:64:09: alignment for "Controlledt59s" must be at least 8
a-finali.ads:70:09: alignment for "Limited_Controlledb98s" must be at least 8
a-finali.ads:70:09: alignment for "Limited_Controlledr96s" must be at least 8
a-finali.ads:70:09: alignment for "Limited_Controlledt93s" must be at least 8
It turned out that this configuration incorrectly used
system-linux-x86.ads for both multilibs. The following patch fixes this
and allowed (together with a libffi and libjava patch to be submitted
shortly) the bootstrap to complete.
Ok for mainline?
Rainer
2011-12-13 Rainer Orth <[email protected]>
* gcc-interface/Makefile.in (%86 linux%):
(LIBGNAT_TARGET_PAIRS_32): Split off from LIBGNAT_TARGET_PAIRS.
(LIBGNAT_TARGET_PAIRS_64): New.
(LIBGNAT_TARGET_PAIRS): Add either depending on multilib.
diff --git a/gcc/ada/gcc-interface/Makefile.in b/gcc/ada/gcc-interface/Makefile.in
--- a/gcc/ada/gcc-interface/Makefile.in
+++ b/gcc/ada/gcc-interface/Makefile.in
@@ -1102,9 +1102,21 @@ ifeq ($(strip $(filter-out %86 linux%,$(
a-exetim.ads<a-exetim-default.ads \
s-linux.ads<s-linux.ads \
s-osinte.adb<s-osinte-posix.adb \
- system.ads<system-linux-x86.ads \
- $(ATOMICS_TARGET_PAIRS) \
- $(X86_TARGET_PAIRS)
+ $(ATOMICS_TARGET_PAIRS)
+
+ LIBGNAT_TARGET_PAIRS_32 = \
+ $(X86_TARGET_PAIRS) \
+ system.ads<system-linux-x86.ads
+
+ LIBGNAT_TARGET_PAIRS_64 = \
+ $(X86_64_TARGET_PAIRS) \
+ system.ads<system-linux-x86_64.ads
+
+ ifeq ($(strip $(MULTISUBDIR)),/64)
+ LIBGNAT_TARGET_PAIRS += $(LIBGNAT_TARGET_PAIRS_64)
+ else
+ LIBGNAT_TARGET_PAIRS += $(LIBGNAT_TARGET_PAIRS_32)
+ endif
ifeq ($(strip $(filter-out xenomai,$(THREAD_KIND))),)
LIBGNAT_TARGET_PAIRS += \
--
-----------------------------------------------------------------------------
Rainer Orth, Center for Biotechnology, Bielefeld University
