Building GCC cross compiler (from “Linux” to “Windows”)

Question

I want to build \"gcc cross-compiler\" to compile \"c/c++\" applications on \"Linux\" environment but for \"Windows\" target.

I have made this so far:

Answer 1

There are precompiled cross-compilers of MinGW-w64 available. This allows to compile native 32- and 64-bit Windows binaries from Linux, a two minute tutorial is available at http://www.blogcompiler.com/2010/07/11/compile-for-windows-on-linux/

Just in case you don't want to spend a lot of time trying to build it yourself.

Answer 2

That's actually OK: the way things go, you need to

1. build binutils
2. install headers
3. build the a partial C compiler: enough to create object files, but not enough to link
4. build the win32api and mingw runtime (which includes your missing dllcrt2.o)
5. build a complete C compiler (and other front-ends, such as C++, Fortran, Ada, whatever, if you want them)

You have successful performed step 3 above; it fails building libgcc (which is a GCC support library), but that means the C compiler core is functionnal (although it won't be able to link, it can still create valid object files). You can check that by looking at the gcc/xgcc file in your GCC build directory.

So, you need to go to the next step, not worrying about your current failure.

(To actuall install the partial C compiler, you should run make with the -k option, to have it do it best, even in the face of errors. For example, use make -k install.)

Answer 3

I grepped through the MinGW sources, and found that dllcrt2.o is something built off the mingwrt package. I assume you have to compile and install that, not just copy the headers?