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PO
 

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    <p>I think that you are confused about which package should be compiled for which platform:</p> <ul> <li><p>GCC needs to be compiled for an x86_64 MacOS X host and an i386-linux target.</p></li> <li><p>GMP, MPC and MPFR are runtime dependencies for GCC. Therefore they also need to be compiled for the GCC host - x86_64 in your case. Therefore, the <code>--host=i386-linux</code> option in the GMP configure command is incorrect.</p></li> </ul> <p>In general, only libraries that will be linked in the programs compiled by GCC need to be built for the cross-compiler target (e.g. i386-linux). GMP and MPFR are not such libraries, unless your programs are actually using them - in that case you will need to have two copies of such libraries, one for GCC and a cross-build for the target.</p> <p>EDIT:</p> <p>Have you considered using <a href="http://www.macports.org/" rel="nofollow">MacPorts</a>? It has all the dependencies for your cross-compiler:</p> <ul> <li><p><a href="http://www.macports.org/ports.php?by=library&amp;substr=gmp" rel="nofollow">gmp-5.0.1</a></p></li> <li><p><a href="http://www.macports.org/ports.php?by=name&amp;substr=mpfr" rel="nofollow">mpfr-3.0.0</a></p></li> <li><p><a href="http://www.macports.org/ports.php?by=library&amp;substr=libmpc" rel="nofollow">libmpc-0.8.2</a></p></li> </ul> <p>There is also an older newlib-based cross-compiler for <code>i386</code>:</p> <ul> <li><a href="http://www.macports.org/ports.php?by=name&amp;substr=i386-elf-gcc" rel="nofollow">i386-elf-gcc-4.3.2</a></li> </ul> <p>Even if you do not want to use these, you can still have a look at the build instructions in their Portfiles.</p> <p>The bottom line is:</p> <ul> <li><p>Apply whatever patches these libraries need - MacPorts already do that.</p></li> <li><p>Compile the libraries <em>for your build host</em> i.e. MacOSX/x86_64. That means that in any <code>--host</code> options for their configure calls you should be something along the lines of <code>--host=x86_64-darwin</code> (or whatever your host needs). If configure can figure out the host on its own, you can skip the <code>--host</code> options altogether.</p></li> <li><p>Compile GCC with <code>--host</code> being your <em>build host</em> (the 64-bit Mac OS X) and a target of i386-linux, e.g. <code>--target=i386-linux</code>. If I were you, I'd start simple with a compiler for the C and C++ languages only.</p></li> </ul> <p>See also <a href="http://wiki.osdev.org/GCC_Cross-Compiler" rel="nofollow">this tutorial</a>. It has some information on how to produce a working toolchain with a proper glibc.</p> <p>That said, I think that you'd be better off installing a proper Linux distribution in a virtual machine, for a whole bunch of reasons. Is there a reason for you to need a cross-compiler specifically? What do you want to do with that compiler?</p>
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    1. POGetting GMP to work with GCC 4.5.2
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    1. COI'm a bit confused, could you please give an example
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    2. CO@thkala also gmp doesn't allow --target to be set?
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    3. CO@thkala i tried "./configure --prefix=/gmp1 --host=i386-apple-darwin10.6.0 --build=i386-linux --with-gmp=/gmp1 --with-mpfr=/gmp1" but it comes up with the above error (as mentioned in the question)
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