gcc configure --with-headers broken?

[Matt Taggart <taggart at carmen dot fc dot hp dot com>]

Hi,

I'm working on the hppa-linux port and routinely build gcc on i386-linux to 
cross compile for hppa-linux. On Monday(Aug 21) I was able to build this cross 
compiler with no problems using the source in our CVS(puffin.external.hp.com) 
that was a snapshot of upstream from 20000707. On Tuesday we merged our CVS to 
a new upstream snapshot from 20000822. Now it appears that the --with-headers 
configure option no longer works. The configure line I used in both cases is,

configure --target=hppa-linux --host=i386-linux \
    --prefix=/home/al-76/puffin/xc --disable-shared --disable-nls \
    --with-headers=/home/al-76/puffin/palinux/include --without-libc \
    --enable-languages=c

Attached is script of the failures from the second build. All of the headers 
it can't find are present in the --with-headers directory.

It looks like "-nostdinc" is added to the compile line but then the right 
include directory is not specified. I can confirm that the contents of the 
directory specified with --with-headers are copied to 
$PREFIX/hppa-linux/sys-include/ but the build doesn't find them(is this where 
it should be looking?).

A few people have suggested work-arounds including copying the headers in by 
hand and using "make LIBGCC2_INCLUDES=-I/your/include/files". However, the 
--with-headers way seems like the proper method.

If something changed between 20000707 and 20000822 to break this I suspect 
most people wouldn't have noticed since either they don't use --with-headers 
or they are building on top of a previous build.

I suspect that a Makefile change caused this. So, I used the (very nice) 
cvsweb to do diffs of Makefile.in and gcc/Makefile.in for the dates in 
question. As the Makefiles are pretty complicated I gave up for now.

Am I correct in assuming that --with-headers should work?
Is anyone else seeing this problem?
Does someone who knows this magic know whats going on?

I am not subscribed to the list so I would appreciate a cc on any responses.

Thanks,

-- 
Matt Taggart
taggart@fc.hp.com

/home/al-76/puffin/xc-build/gcc/gcc/xgcc -B/home/al-76/puffin/xc-build/gcc/gcc/ -nostdinc -B/home/al-76/puffin/xc-build/gcc/hppa-linux/newlib/ -isystem /home/al-76/puffin/xc-build/gcc/hppa-linux/newlib/targ-include -isystem /home/al-76/puffin/palinux/gcc/newlib/libc/include -B/home/al-76/puffin/xc/hppa-linux/bin/ -B/home/al-76/puffin/xc/hppa-linux/lib/ -isystem /home/al-76/puffin/xc/hppa-linux/include -O2  -DCROSS_COMPILE -DIN_GCC    -g -O2 -isystem ./include  -fPIC -g1  -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED  -I. -I/home/al-76/puffin/palinux/gcc/gcc -I/home/al-76/puffin/palinux/gcc/gcc/config -I/home/al-76/puffin/palinux/gcc/gcc/../include  -DL_muldi3 -c /home/al-76/puffin/palinux/gcc/gcc/libgcc2.c -o libgcc/./_muldi3.o
In file included from /home/al-76/puffin/palinux/gcc/gcc/crtstuff.c:60:
/home/al-76/puffin/palinux/gcc/gcc/tsystem.h:52:19: stdio.h: No such file or directory
/home/al-76/puffin/palinux/gcc/gcc/tsystem.h:55:23: sys/types.h: No such file or directory
/home/al-76/puffin/palinux/gcc/gcc/tsystem.h:58:19: errno.h: No such file or directory
/home/al-76/puffin/palinux/gcc/gcc/tsystem.h:69:20: stdlib.h: No such file or directory
/home/al-76/puffin/palinux/gcc/gcc/tsystem.h:70:20: unistd.h: No such file or directory
In file included from /home/al-76/puffin/xc-build/gcc/gcc/include/syslimits.h:7,
                 from /home/al-76/puffin/xc-build/gcc/gcc/include/limits.h:11,
                 from /home/al-76/puffin/palinux/gcc/gcc/tsystem.h:73,
                 from /home/al-76/puffin/palinux/gcc/gcc/crtstuff.c:60:
/home/al-76/puffin/xc-build/gcc/gcc/include/limits.h:130:75: limits.h: No such file or directory
In file included from /home/al-76/puffin/palinux/gcc/gcc/libgcc2.c:37:
/home/al-76/puffin/palinux/gcc/gcc/tsystem.h:52:19: stdio.h: No such file or directory
/home/al-76/puffin/palinux/gcc/gcc/tsystem.h:55:23: sys/types.h: No such file or directory
/home/al-76/puffin/palinux/gcc/gcc/tsystem.h:58:19: errno.h: No such file or directory
/home/al-76/puffin/palinux/gcc/gcc/tsystem.h:65:20: string.h: No such file or directory
/home/al-76/puffin/palinux/gcc/gcc/tsystem.h:69:20: stdlib.h: No such file or directory
/home/al-76/puffin/palinux/gcc/gcc/tsystem.h:70:20: unistd.h: No such file or directory
In file included from /home/al-76/puffin/xc-build/gcc/gcc/include/syslimits.h:7,
                 from /home/al-76/puffin/xc-build/gcc/gcc/include/limits.h:11,
                 from /home/al-76/puffin/palinux/gcc/gcc/tsystem.h:73,
                 from /home/al-76/puffin/palinux/gcc/gcc/libgcc2.c:37:
/home/al-76/puffin/xc-build/gcc/gcc/include/limits.h:130:75: limits.h: No such file or directory
In file included from /home/al-76/puffin/palinux/gcc/gcc/libgcc2.c:37:
/home/al-76/puffin/palinux/gcc/gcc/tsystem.h:76:18: time.h: No such file or directory
make[1]: *** [crtbegin.o] Error 1