Hello, I have set up a cross compile toolchain that targets freebsd and runs on my linux host that doesn't work correctly. This is what I did: 0. Prerequisites I want the toolchain to reside in /home/ubuntu/crossroot. So I copied these files from a FreeBSD 7.1 installation to this directory: /usr/include/... /usr/lib/... /lib/... 1. create binutils in (2.21) ../../src/binutils/configure --target=i386-pc-freebsd7.1 --disable-nls --prefix=/home/ubuntu/crossroot --with-sysroot=/home/ubuntu/crossroot make make install 2. create gcc (4.2.4) ../..src/gcc/configure --target=i386-pc-freebsd7.1 --disable-nls --prefix=/home/ubuntu/crossroot --with-sysroot=/home/ubuntu/crossroot --enable-languages=c,c++ make make install There are no errors in this process. But when I try to compile a simple test program using c++ exceptions and run it on the target machine I get a segmentation fault after the exception is catched. I statically linked libstdc++ and libgcc. The dynamically linked version seems to run but only because libgcc.so and libstdc++.so from the target machine are picked. If I copy over the versions from the created toolchain I get the same crashes again. If no exceptions are thrown everything works as it should. To figure out what I did wrong I tried this: A) Use the same sources for gcc and binutils and build a cross toolchain for linux (a different linux). This toolchain works as it should. B) Build the same toolchain natively on the FreeBSD system I got the dependencies from. This toolchain works too. So I took all compiler support libraries (like libstdc++.*, libgcc.*, ...) from the working native freebsd build of the toolchain and copied them over to the cross toolchain for freebsd. This seemed to cure the problem. So I guess something must have went wrong when building libgcc. Is there some flaw in the way I built this toolchain? Where could I try to start looking for the source of the problem? I can add all sorts of other outputs from the created toolchains if it helps. Thank you Markus P.S.: This list is really awesome. I had multiple questions in the last days and they all have been answered quickly.