On Fri, 14 Apr 2017 10:15:36 +0200 Michele Bucca <michele.bu...@gmail.com> wrote:
> Hello Everyone, > > I'm trying to cross-compile a native host-x-host compiler with the > musl-libc library > > To do that I have to > > 1) compile a cross-compiler. (Done) > 2) Install GMP, MPFR and MPC on the cross-compiler > 3) make a host-x-host cross-compile to make a native compiler > > Now I'm stuck compiling the GMP, MPFR and MPC... > > I had problems with MPFR because when I tried to compile them with the > following configure switches > > ../mpfr-3.1.4/configure --host=i486-linux-musl > --prefix=/home/michele/tmp/musl-native-toolchain/native/i486-linux-musl/ > > it produced me x86_64 libraries! (My host is x86_64-linux-gnu) > > So I changed the configure switch like that: > > ../mpfr-3.1.4/configure --host=i486-linux-musl > --build=x86_64-linux-gnu > --prefix=/home/michele/tmp/musl-native-toolchain/native/i486-linux-musl/ > > and it compiled well.. > > Now I'm having problems building MPC for the same reason: the > configure is like this: > > ../mpc-1.0.3/configure --host=i486-linux-musl > --build=x86_64-linux-gnu > --prefix=/home/michele/tmp/musl-native-toolchain/native/i486-linux-musl/ > > what am I doing wrong? > Hello Michele, First you need to understand the difference between host, build, and target... https://www.gnu.org/software/autoconf/manual/autoconf-2.65/html_node/Specifying-Target-Triplets.html You ended up with 64bit libraries because build defaulted to your host compiler. build and host can be the same, but build will use the toolchain you need a target when cross-compiling. In this case, build and host is the same because are most likely using the same machine to create the cross-compiler and use that cross-compiler (example): --build=x86_64-cross-linux-gnu --host=x86_64-cross-linux-gnu --target=i486-linux-musl After the cross-toolchain is built, then you can use (example): --host=i486-linux-musl --build=x86_64-cross-linux-gnu If there is any confusion, you can look at he main cross-lfs CLFS book as a guide. Sincerely, William _______________________________________________ Clfs-support mailing list Clfs-support@lists.clfs.org http://lists.clfs.org/listinfo.cgi/clfs-support-clfs.org
