Re: Error compiling arm-elf-gcc-4.5.0

[Massimiliano Cialdi <massimiliano.cialdi@powersoft.it>]

Il giorno mar, 20/04/2010 alle 19.06 +0300, Kai Ruottu ha scritto:
> Probably the native 'objdump' should be used here, not the 'arm-elf'
> one... The code in 'gcc/configure' for this seems to be the :
> 
> -------------------- clip -----------------------------------
> pluginlibs=
> if test x"$enable_plugin" = x"yes"; then
> 
>    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for exported 
> symbols" >&5
> $as_echo_n "checking for exported symbols... " >&6; }
>    echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
>    ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
>    if $gcc_cv_objdump -T conftest | grep foobar > /dev/null; then
>      : # No need to use a flag
>    else
>      { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -rdynamic" >&5
> $as_echo_n "checking for -rdynamic... " >&6; }
>      ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > 
> /dev/null 2>&1
>      if $gcc_cv_objdump -T conftest | grep foobar > /dev/null; then
>        pluginlibs="-rdynamic"
>      else
>        enable_plugin=no
>      fi
>    fi
> -------------------- clip -----------------------------------
> 
> The native GCC compiles and links a program and then the executable
> will be looked with 'objdump'...
> 
> So my guess is that you have somehow messed your environment :(
> For instance putting the '$prefix/$target/bin' into your PATH
> before the '/usr/bin' where the native 'objdump' usually is...
> 
> Why you would do a weird thing like this, I cannot guess... If
> some instruction somewhere told to do this, please tell us!
No path variable is correctly set.

more precsely I have done the following steps:
export INSTALLDIR=/usr/local/cross-gcc-arm-elf-4.5.0

mkdir build-binutils
cd build-binutils 
../binutils-2.20.1/configure --target=arm-elf --prefix=${INSTALLDIR}
make -j5 all
sudo make install

cd ../gcc-4.5.0 
ln -s ../newlib-1.18.0/newlib . 
ln -s ../newlib-1.18.0/libgloss . 
cd .. 
mkdir build-gcc && cd build-gcc 
../gcc-4.5.0/configure --enable-languages=c,c++ --target=arm-elf
--with-gnu-as --with-gnu-ld –prefix=${INSTALLDIR} --with-newlib
--disable-shared --enable-newlib –enable-multilib --enable-interwork
--disable-threads --disable-nls --enable-libstdcxx-allocator=malloc
--with-mpc=/usr/local/mpc
make -j5 all


I have the error:
checking for exported
symbols... /usr/local/cross-gcc-arm-elf-4.5.0/arm-elf/bin/objdump:
conftest: File format not recognized
checking for
-rdynamic... /usr/local/cross-gcc-arm-elf-4.5.0/arm-elf/bin/objdump:
conftest: File format not recognized


$ echo $PATH
/opt/jdk1.6/bin:/opt/eclipse:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games

So I first build and install binutils 2.20.1 for arm without problems,
then I try to build gcc (as said I have satic mpc 0.8.1 library) with
that error

bye