As seen from the following log (building stage3)
/abuild/rguenther/obj/./prev-gcc/xgcc -B/abuild/rguenther/obj/./prev-gcc/
-B/usr/local/x86_64-unknown-linux-gnu/bin/ -c -g -O2 -gnatpg -gnata -g -O0
\
-I- -I. -Iada -I/space/rguenther/src/svn/trunk/gcc/ada
/space/rguenther/src/svn/trunk/gcc/ada/s-memory.adb -o ada/s-memory.o
mkdir -p ada/bldtools/nmake_s
cp -p /space/rguenther/src/svn/trunk/gcc/ada/sinfo.ads
/space/rguenther/src/svn/trunk/gcc/ada/nmake.adt
/space/rguenther/src/svn/trunk/gcc/ada/xnmake.adb ada/nmake.adb
ada/bldtools/nmake_s
(cd ada/bldtools/nmake_s; /tmp/gnatmake -q xnmake ; ./xnmake -s ../../nmake.ads
)
/abuild/rguenther/obj/./prev-gcc/xgcc -B/abuild/rguenther/obj/./prev-gcc/
-B/usr/local/x86_64-unknown-linux-gnu/bin/ -c -g -O2 -gnatpg -gnata -I-
-I. -Iada -I/space/rguenther/src/svn/trunk/gcc/ada
/space/rguenther/src/svn/trunk/gcc/ada/treepr.adb -o ada/treepr.o
this is because we build gnattools only after building stage3.
--
Summary: Host gnatmake is used to build stageN, N>1 tools
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: rguenth at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30556
