On 19.4.2014 7:42, mar...@byteanywhere.com wrote: > > Hi > > Thanks all for the replays. > I am trying to create a cross compiler using the steps for building LFS > when the temporary tools are build. > Those steps should allow me to use the cross compiler, but obviously > i am not doing something correctly. > I just used the path from cross-tools package 0.43 > but not using anything from there. One reason for which i am trying > to create the cross compiler, is that i saw you build for LFS gcc 4.8.2 > and glibc-2.19, which are not supported anymore by that tool or others. > > This are the steps is used. I didnt created a lfs user, > but if you think thats the cause of the problem i can create it and try > that way as well. The host is x86_64 with kernel 3.7.10 > > I have a symlink between: > ls -ld /tools > lrwxrwxrwx 1 root root 47 Apr 17 08:08 /tools -> > /home/marian/crosstool/x86_64-unknown-linux-gnu/ > > > export PREFIX=/home/marian/crosstool/x86_64-unknown-linux-gnu > export TARGET=x86_64-unknown-linux-gnu
The trick is in this line. To "cross compile" glibc for the same arch, target triplet needs to be different or you are nothing other but simply compiling. I ran into similar issue when I bootstrapped 32 bit glibc on 64 bit os. That's one reason lfs uses $LFS_TGT-*lfs*-linux-gnu, not $LFS_TGT-*unknown*-linux-gnu for pass1 of both binutils and gcc. > export > SYSROOT=/home/marian/crosstool/x86_64-unknown-linux-gnu/x86_64-unknown-linux-gnu/sys-root > export PATH=/tools/bin:/bin:/usr/bin > > 1. Binutils > ../binutils-2.24/configure --prefix=/tools --with-sysroot=$SYSROOT > --with-lib-path=/tools/lib --target=$TARGET --disable-nls > --disable-werror > > binutils compiles fine. no errors. > > 2. Kernel headers > > make headers_check > make INSTALL_HDR_PATH=dest headers_install > cp -rv dest/include/* /tools/include > > > 3. From some other docs i saw they install the glibc headers as well here. > I have tried this, but the same error is happening when building gcc or > glibc. > System glibc headers > > mkdir glibc-build > cd glibc-build > > ../glibc-2.19/configure --prefix=/tools --host=$TARGET > --build=$(../glibc-2.19/scripts/config.guess) --disable-profile > --enable-kernel=2.6.32 --with-headers=/tools/include > libc_cv_forced_unwind=yes libc_cv_ctors_header=yes libc_cv_c_cleanup=yes > --without-selinux > > make -k install-headers install_root=/ > > 4. GCC stage 1 > > ../gcc-4.8.2/configure --target=$TARGET --prefix=/tools > --with-sysroot=$SYSROOT --with-newlib --without-headers > --with-local-prefix=/tools > --with-native-system-header-dir=/tools/include --disable-nls > --disable-shared --disable-multilib --disable-decimal-float > --disable-threads --disable-libatomic --disable-libgomp --disable-libitm > --disable-libmudflap --disable-libquadmath --disable-libsanitizer > --disable-libssp --disable-libstdc++-v3 --enable-languages=c,c++ > --with-mpfr-include=$(pwd)/../gcc-4.8.2/mpfr/src > --with-mpfr-lib=$(pwd)/mpfr/src/.libs > > Here if i use make, i get the same error, that compiler can not create > executables. From config log, the error is that cross gcc is not able > to find a couple of libs (which seems generated by glibc) crt1.o, crti.o, > crtn.o and libc.so > > Thus from other docs i have seen these being used, so i have tried to > continue using them: > > make all-gcc > make all-target-libgcc > make install-gcc > make install-target-libgcc > > 5. building glibc fails building in sunrpc folder, > for some rpc_* files, with the same same error, saying that those libs can > not be found. > > > ../glibc-2.19/configure --prefix=/tools --host=$TARGET > --build=$(../glibc-2.19/scripts/config.guess) --disable-profile > --enable-kernel=2.6.32 --with-headers=/tools/include > libc_cv_forced_unwind=yes libc_cv_ctors_header=yes libc_cv_c_cleanup=yes > --without-selinux > -- http://linuxfromscratch.org/mailman/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/lfs/faq.html Unsubscribe: See the above information page
