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add what should be done after completing the toolchain and a note of warning

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that many packages cannot be succesfully cross compiled.

svn path=/nixpkgs/trunk/; revision=4457
This commit is contained in:
Armijn Hemel 2005-12-30 14:45:27 +00:00
parent 2f6385ba23
commit fec867b5f2
1 changed files with 15 additions and 0 deletions
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15
maintainers/docs/cross.txt
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@ -314,3 +314,18 @@ too. Earlier on in the build process these flags are used to compile important
files like libgcc.a by the host system gcc, which does need to be linked files like libgcc.a by the host system gcc, which does need to be linked
to glibc. To make this work correctly you will need to carefully juggle to glibc. To make this work correctly you will need to carefully juggle
with compilation flags. This is still work in progress for Nix. with compilation flags. This is still work in progress for Nix.
---
After succesfully completing the whole toolchain you can start building
packages with the newly built tools. To make everything build correctly
you will need a stdenv for your target platform. Setting up this platform
will take some effort. Right now there is a very experimental setup for
arm-linux, which needs to be cleaned up before it is production ready.
Please note that many packages are not well suited for cross-compilation.
Even though the package itself might be very well portable often the
buildscripts are not. One thing that we have seen that causes frequent
build failures is the use of the LD variable. This is often set to 'ld'
and not $(CROSS)-ld.