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Forget my earlier posts today, my brain wasn't yet switched on :)
> libdl.a is needed for Binutils tests, and libc.a is needed for GCC's
> tests. So, they should be moved later. I changed the book just now.
Brilliant, i've svn-ed the latest book, make-d it, read it, used it.
Book version is now: SVN-20070705.
Retraced my steps, moved back libc.a, libdl.a, rebuilt glibc and gcc.
And sure enough: it works this time.
At least, i have now succesfully built the butterfly toolchain.
The glibc tests still fail as do the gcc tests (fair enough there's a blurb
in the 6.12 about 'the tests will be bad').
Should they complete without errors ? The book at least mentions that the
glibc tests can return one error in 'posix/annexc'. But my make -k check
returns a bunch of them and then stops (see earlier post).
And I guess the tcl/dejagnu/expect packages are built for the gcc/binutils
tests with a reason.
Two things I noticed in '6.12. Butterfly Toolchain':
echo | cc -dM -E - | grep -E 'PIC|SSP|FORTIFY|OPTIMIZE'
doesn't list '#define __OPTIMIZE__ 1'
Not sure if this will be a problem as the fgets-overflow.c and
strcpy-overflow.c tests show the expected output.
And:
"The next commands demonstrates that without any protection this program can
run a buffer overflow silently, without any warnings, errors, or crashes:"
ehm:
#gcc -o fgets-overflow fgets-overflow.c \
-fno-stack-protector -U_FORTIFY_SOURCE -Wall -Wformat=2
# echo abcdefghijklm | ./fgets-overflow 14
abcdefghijklm
Segmentation fault
I wouldn't call that exactly "silently, without crashes".
Thanks so far,
Albert
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