(gcc.info) Cross-Compiler

 
 Building and Installing a Cross-Compiler
 ========================================
 
    GNU CC can function as a cross-compiler for many machines, but not
 all.
 
    * Cross-compilers for the Mips as target using the Mips assembler
      currently do not work, because the auxiliary programs
      `mips-tdump.c' and `mips-tfile.c' can't be compiled on anything
      but a Mips.  It does work to cross compile for a Mips if you use
      the GNU assembler and linker.
 
    * Cross-compilers between machines with different floating point
      formats have not all been made to work.  GNU CC now has a floating
      point emulator with which these can work, but each target machine
      description needs to be updated to take advantage of it.
 
    * Cross-compilation between machines of different word sizes is
      somewhat problematic and sometimes does not work.
 
    Since GNU CC generates assembler code, you probably need a
 cross-assembler that GNU CC can run, in order to produce object files.
 If you want to link on other than the target machine, you need a
 cross-linker as well.  You also need header files and libraries suitable
 for the target machine that you can install on the host machine.

 
* Steps of Cross      Using a cross-compiler involves several steps
                           that may be carried out on different machines.
* Configure Cross     Configuring a cross-compiler.
* Tools and Libraries Where to put the linker and assembler, and the C library.
* Cross Headers       Finding and installing header files
                           for a cross-compiler.
* Cross Runtime       Supplying arithmetic runtime routines (`libgcc1.a').
* Build Cross         Actually compiling the cross-compiler.

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