Hi Thank you for your reply!
I am actually trying with the simplest possible code:
int main() {}
And I always get the same problem.
I compile with -fPIC and link with -WL,-pie
I report the output after adding -v
Target: powerpc-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 4.4.5-8'
--with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs
--enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.4 --enable-shared --enable-multiarch
--enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib
--without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.4 --libdir=/usr/lib
--enable-nls --enable-clocale=gnu --enable-libstdcxx-debug
--enable-objc-gc --enable-secureplt --disable-softfloat
--enable-targets=powerpc-linux,powerpc64-linux --with-cpu=default32
--with-long-double-128 --enable-checking=release
--build=powerpc-linux-gnu --host=powerpc-linux-gnu
--target=powerpc-linux-gnu
Thread model: posix
gcc version 4.4.5 (Debian 4.4.5-8)
COMPILER_PATH=/usr/lib/gcc/powerpc-linux-gnu/4.4.5/:/usr/lib/gcc/powerpc-linux-gnu/4.4.5/:/usr/lib/gcc/powerpc-linux-gnu/:/usr/lib/gcc/powerpc-linux-gnu/4.4.5/:/usr/lib/gcc/powerpc-linux-gnu/:/usr/lib/gcc/powerpc-linux-gnu/4.4.5/:/usr/lib/gcc/powerpc-linux-gnu/
LIBRARY_PATH=/usr/lib/gcc/powerpc-linux-gnu/4.4.5/:/usr/lib/gcc/powerpc-linux-gnu/4.4.5/:/usr/lib/gcc/powerpc-linux-gnu/4.4.5/../../../../lib/:/lib/../lib/:/usr/lib/../lib/:/usr/lib/gcc/powerpc-linux-gnu/4.4.5/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-v' '-o' 'bin/ppc-test'
/usr/lib/gcc/powerpc-linux-gnu/4.4.5/collect2 --build-id
--eh-frame-hdr -V -Qy -m elf32ppclinux --hash-style=both -dynamic-linker
/lib/ld.so.1 -o bin/ppc-test
/usr/lib/gcc/powerpc-linux-gnu/4.4.5/../../../../lib/crt1.o
/usr/lib/gcc/powerpc-linux-gnu/4.4.5/../../../../lib/crti.o
/usr/lib/gcc/powerpc-linux-gnu/4.4.5/crtbegin.o
-L/usr/lib/gcc/powerpc-linux-gnu/4.4.5
-L/usr/lib/gcc/powerpc-linux-gnu/4.4.5
-L/usr/lib/gcc/powerpc-linux-gnu/4.4.5/../../../../lib -L/lib/../lib
-L/usr/lib/../lib -L/usr/lib/gcc/powerpc-linux-gnu/4.4.5/../../..
-verbose -pie runners/obj/testppc.o -lgcc --as-needed -lgcc_s
--no-as-needed -lc -lgcc --as-needed -lgcc_s --no-as-needed
/usr/lib/gcc/powerpc-linux-gnu/4.4.5/crtend.o
/usr/lib/gcc/powerpc-linux-gnu/4.4.5/../../../../lib/crtn.o
Checking all the linked object files with "readelf -d myobjectfile |
fgrep TEXT" all seem to be PIC as nothing is produced by the previous
comand.
Oddly giving the command "readelf -d mypie_executable | fgrep TEXT" to
my final 'PIC' output executable i get: "0x00000016 (TEXTREL) 0x0"
Then if I try to load the file with QEMU-USER i get: "error while
loading shared libraries: R_PPC_REL24 relocation at 0xb31f95a0 for
symbol `__libc_start_main' out of range" !!!
I am afraid the linker goes crazy as I want a PIC executable, not a
shared library.. if I create a shared library (-shared) there is not
that relocation problem!
I really dunno what to do.. where the problem comes from..
Thank you very much in advance!
Stefano B.
On 02/16/2011 07:02 PM, kevin diggs wrote:
Hi,
I think I have seen this when I was resolving a symbol from a shared
library using a definition in a static library. I think I bumped into
this while trying to get a 4.1.2 rpm to build 32/64 bit multi-lib
compiler correctly. I had problems getting some of the internal
libraries correct. Either they ended up in the wrong location or what
was supposed to be a 32 bit library was a 64 bit. This caused the
linker to fail to use the shared library. It then fell back on the
static. Resulting in the dreaded relocation error.
Try linking with -v to double check what you are linking in. Also
might try ldd on the executable.
kevin
