[gentoo-embedded] Re: (was) uclibc base system; arm and pie

[Ned Ludd]

On Thu, 2004-06-24 at 03:03, Peter S. Mazinger wrote:
> On 23 Jun 2004, Ned Ludd wrote:
>
> > Side Note Off Topic:
> >
> > Both arm & mips fail a simple
> > echo 'int main() { return 0; }' > main.c
> > gcc -o main main.c -pie
> >
> > /usr/lib/libc_nonshared.a(elf-init.oS)(.text+0x38): In function
> > `__libc_csu_init':
> > : undefined reference to `__init_array_start'
> > /usr/lib/libc_nonshared.a(elf-init.oS)(.text+0x3c): In function
> > `__libc_csu_init':
> > : undefined reference to `__init_array_end'
> >
> > I think these symbols are provided by linker scripts.
> > Seen anything floating around where others have run into the same thing?
> > If so recall the solution?
>
> Is the used gcc surely patched for pie?
> gcc (3.3.3+branch,3.4.0) does not support pie for arm (see my upstream
> pie patches for arm). at least gcc-3.3.3-piepatches-8.7.5,
> gcc-3.4.0-piepatches-8.7.6.1 have to be used.
> check if the startfile/endfile sections mention pie.
>
> mips could be another problem, because it defaults already to PIC.
>
> could you run gcc -v and send the result for both cases?

- mips - 

Reading specs from /usr/lib/gcc/mips-unknown-linux-gnu/3.4.0/specs
Configured with: /var/tmp/portage/gcc-3.4.0/work/gcc-3.4.0/configure
--prefix=/usr --bindir=/usr/mips-unknown-linux-gnu/gcc-bin/3.4
--includedir=/usr/lib/gcc/mips-unknown-linux-gnu/3.4.0/include
--datadir=/usr/share/gcc-data/mips-unknown-linux-gnu/3.4
--mandir=/usr/share/gcc-data/mips-unknown-linux-gnu/3.4/man
--infodir=/usr/share/gcc-data/mips-unknown-linux-gnu/3.4/info
--enable-shared --host=mips-unknown-linux-gnu
--target=mips-unknown-linux-gnu --with-system-zlib
--enable-languages=c,c++ --enable-threads=posix --enable-long-long
--disable-checking --enable-cstdio=stdio --enable-clocale=generic
--enable-__cxa_atexit --enable-version-specific-runtime-libs
--with-gxx-include-dir=/usr/lib/gcc/mips-unknown-linux-gnu/3.4.0/include/g++-v3 --with-local-prefix=/usr/local --disable-werror --enable-shared --enable-nls --without-included-gettext --disable-multilib
Thread model: posix
gcc version 3.4.0  (Gentoo Linux 3.4.0, pie-8.5.3)

I'll update it in the afternoon tmw (8-12 hrs from now) to current to
see where it stands.
[ebuild     U ] sys-devel/gcc-3.4.0-r6 [3.4.0] 


- arm -
Reading specs from /usr/lib/gcc-lib/armv4l-unknown-linux-gnu/3.3.3/specs
Configured with: /var/tmp/portage/gcc-3.3.3-r5/work/gcc-3.3.3/configure
--prefix=/usr --bindir=/usr/armv4l-unknown-linux-gnu/gcc-bin/3.3
--includedir=/usr/lib/gcc-lib/armv4l-unknown-linux-gnu/3.3.3/include
--datadir=/usr/share/gcc-data/armv4l-unknown-linux-gnu/3.3
--mandir=/usr/share/gcc-data/armv4l-unknown-linux-gnu/3.3/man
--infodir=/usr/share/gcc-data/armv4l-unknown-linux-gnu/3.3/info
--enable-shared --host=armv4l-unknown-linux-gnu
--target=armv4l-unknown-linux-gnu --with-system-zlib
--enable-languages=c,c++ --enable-threads=posix --enable-long-long
--disable-checking --disable-libunwind-exceptions --enable-cstdio=stdio
--enable-version-specific-runtime-libs
--with-gxx-include-dir=/usr/lib/gcc-lib/armv4l-unknown-linux-gnu/3.3.3/include/g++-v3 --with-local-prefix=/usr/local --enable-shared --enable-nls --without-included-gettext --disable-multilib --enable-__cxa_atexit --enable-clocale=generic
Thread model: posix
gcc version 3.3.3 20040412 (Gentoo Linux 3.3.3-r5, ssp-3.3-7,
pie-8.7.5.3)

[ebuild   R   ] sys-devel/gcc-3.3.3-r5  -X -bootstrap -build -debug
-debug -f77 -gcj -hardened -(java) -multilib -nls -objc -static -uclibc 
23,201 kB


>
> Peter
-- 
Ned Ludd <solar@g.o>
Gentoo (hardened,security,infrastructure,embedded,toolchain) Developer