On 2/20/19 5:29 AM, Andrew Haley wrote: > On 2/18/19 7:09 AM, Dennis Clarke wrote: >> So the trick is to use the cross compiler tools in /opt/tools to build a >> fully native compiler for the target machine. To do that it seems clear >> now that one must have *both* the HOST compiler tools and the TARGET >> tools which are really the cross compiler and linker and assembler. > > This is called a Canadian Cross. There are many examples of these, and > scripts and tools available to build them. > Canadian ? Perfect. > You'll need to configure --host=, --target=, and --build=. It's a > really good idea to build a fully-integrated source tree, with all of > the binutils in the same source tree as gcc. This is called a "Cygnus > tree" after Cygnus, which invented a lot of this stuff. (And, > incidentally, where I used to work.) > > One question: do you have the root filesystem for your target machine? > This means target headers and libraries. If you do that'll make things > veru much easier. I have a complete system root mounted at /riscv64/rootfs which has everything ... except a compiler. > > http://crosstool-ng.github.io/ is a thing which is supposed to support > Canadian crosses. > I'll look into that! Dennis
