Hello,
I try to build a toolchain for a i486-linux-gnu target, and I'm new to
cross compiling.
I'm running a i686-pc-cygwin system
I have built the following packages:
binutils-2.19.1:, compiled in a 'binutils' directory:
../../../sources/binutils/binutils-2.19.1/configure -C
--target=i486-linux-gnu --prefix=`pwd`/../tools
--exec-prefix=`pwd`/../tools --disable-nls -v
make all
make install
gcc-4.3.3, compiled in a 'gcc-bootstrap' directory:
../../../sources/gcc/gcc-4.3.3/configure -C --target=i486-linux-gnu
--prefix=`pwd`/../tools --exec-prefix=`pwd`/../tools
--enable-languages=c --disable-nls
make all-gcc
make install-gcc
glibc-2.9, with glibc-linuxthreads-2.3.6, compiled in a 'glibc' directory:
CC=../tools/bin/i486-linux-gnu-gcc.exe
CFLAGS=-I../kernel-include/linux-2.6.27/include
../../../sources/glibc-2.9/configure -C --host=i486-linux-gnu
--build=i686-pc-cygwin --prefix=`pwd`/../tools
--exec-prefix=`pwd`/../tools --enable-add-ons
--with-headers=../kernel-include/linux-2.6.27/include --disable-nls
The configuration fails with the error
running configure fragment for nptl/sysdeps/pthread
checking for forced unwind support... no
configure: error: forced unwind support is required
The unwind support fails because glibc configure script tries to compile
and link a small program testing for unwind support, and the link fails:
/cross-gcc/targets/i486-linux-gnu/tools/bin/../lib/gcc/i486-linux-gnu/4.3.3/../../../../i486-linux-gnu/bin/ld:
crt1.o: No such file: No such file or directory
Where should this file crt1.o come from ?. I know its a C runtime
startup file. I guess that this is a target object file.
The http://gcc.gnu.org/install/build.html page, under the "Building a
cross compiler" section, tells that
[It] Build runtime libraries using the compiler from the previous step
So I suppose the crt1.o object file should be located in those
libraries, but I cannot find them
Is there something missing or wrong somewhere ? Any help will be appreciated
Thanks for your time and your replies
Vincent De Groote
