tech-toolchain: re: cross-building gcc4 fails

Subject: re: cross-building gcc4 fails
To: Manuel Bouyer <bouyer@antioche.eu.org>
From: matthew green <mrg@eterna.com.au>
List: tech-toolchain
Date: 06/25/2006 07:15:35

 Hi,
 attemting to build a i386 release from OS X fails in gcc. The full log is
 available at ftp://asim.lip6.fr/outgoing/build-i386.log, but basically
 the issue is:
 # compile backend/ggc-none.lo
 cc -O3 -mtune=G5 -mcpu=G5 -I. -I/Volumes/data/bouyer/current/src/gnu/usr.bin/gcc4/backend/../arch/i386 -DIN_GCC -DHAVE_CONFIG_H -I/Volumes/data/bouyer/curre
nt/src/gnu/dist/gcc4/gcc -I/Volumes/data/bouyer/current/src/gnu/dist/gcc4/gcc/. -I/Volumes/data/bouyer/current/src/gnu/dist/gcc4/gcc/../include -I/Volumes/data
/bouyer/current/src/gnu/dist/gcc4/gcc/../libcpp/include -I/Volumes/data/bouyer/current/src/gnu/usr.bin/gcc4/backend/.. -c -o ggc-none.lo.o /Volumes/data/bou
yer/current/src/gnu/dist/gcc4/gcc/ggc-none.c
 In file included from /Volumes/data/bouyer/current/src/gnu/dist/gcc4/gcc/ggc-none.c:32:
 /Volumes/data/bouyer/current/src/gnu/dist/gcc4/gcc/system.h:396:20: malloc.h: No such file or directory
 *** [ggc-none.lo] Error code 1
 1 error
 
 nbmake: stopped in /Volumes/data/bouyer/current/src/gnu/usr.bin/gcc4/backend
 *** [dependall-backend] Error code 2
 1 error
 
 nbmake: stopped in /Volumes/data/bouyer/current/src/gnu/usr.bin/gcc4
 
 
 As you can see it's using HOST_CC here, when is should be using the cross
 toolchain (building the cross-compiler has been done at this point, we're
 building the gcc binaries part of the comps.tgz set)
actually, this is right. to build the (native) compiler you have to 
build a bunch of helper programs, and those have to run on the build
system. so it should be using HOST_CC here. the quesion is why is
this failing? this should be using the "auto-build.h" that is created
by running configure and it should define/undef HAVE_MALLOC_H.
can you find out why that is occuring? actually, this should be
compiled with -DGENERATOR_FILE... let me check.