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Adding uClibc support for a new platform
Sometimes you want to cross-compile to another architecture, for example an
embedded devices. For embedded devices the uClibc C library is popular.
In Nixpkgs there is support for uClibc for several architectures but not
everything is supported.
Adding support is not very difficult,
* Add your architecture to the buildfiles in
$nixpkgs/development/tools/misc/binutils-cross
* Add your architecture to the buildfiles in
$nixpkgs/development/compilers/gcc-4.0-cross
* Add your architecture to the buildfiles in
$nixpkgs/os-specific/linux/kernel-headers-cross
* Add your architecture to the buildfiles in
$nixpkgs/development/uclibc
In the latter directory you will also need a configuration file for uClibc.
You can make these by unpacking the uClibc sources and run a "make menuconfig".
In the configuration a few things need to be adapted:
- kernel sources -> need to point at our own kernel headers
- install -> needs to point at $out
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