Commit Graph

15 Commits

Author SHA1 Message Date
John Ericson
350a5e31fc
Merge pull request #29418 from vanschelven/small-documentation-improvements
documentation: cross-compilation - partial rewrite
2017-11-13 16:21:58 -05:00
Orivej Desh
467d22c15b documentation: fix typos 2017-11-09 12:57:21 +00:00
Klaas van Schelven
b20916bd98 documentation: cross-compilation - partial rewrite 2017-11-09 13:44:03 +01:00
John Ericson
5ae8f18f4d Rename __targetPackages to targetPackages 2017-11-05 17:10:53 -05:00
John Ericson
9dc2a3aeba doc: Update cross compilation chapter for stdenv.{build,host,target}Platform 2017-07-07 13:24:33 -04:00
hsloan
9f156f4a8a top-level: stdenv.cross vanquished 2017-06-28 21:29:08 -04:00
John Ericson
9f680d30f4 lib and doc: Use "libSystem" as identifier for that libc in platforms 2017-05-31 00:47:25 -04:00
John Ericson
20e756a093 lib: Consolidate platform configurations (used for crossSystem)
This is good for maintenance and education.
2017-05-29 18:56:03 -04:00
Matthew Bauer
e9e9af4b5c
doc/cross-compilation: change cross to target
thanks to @bjornfor for catching this
2017-05-24 02:02:14 -05:00
Matthew Bauer
11f5136005
doc/cross-compilation: cleanup some grammar
These all should be uncontroversial changes. Just some awkward wording and
double words, etc.
2017-05-23 23:40:37 -05:00
John Ericson
863d79b364 top-level: Introduce targetPackages and a "double link fold"
Each bootstrapping stage ought to just depend on the previous stage, but
poorly-written compilers break this elegence. This provides an easy-enough
way to depend on the next stage: targetPackages. PLEASE DO NOT USE IT
UNLESS YOU MUST!

I'm hoping someday in a pleasant future I can revert this commit :)
2017-04-23 14:01:12 -04:00
John Ericson
c13457fe58 doc: Document the structure of {build,host,target}Platforms
Worthwhile to do now that #24610 makes it less abysmal.
2017-04-18 12:48:16 -04:00
John Ericson
8cd4c31d6b top-level: Allow nixpkgs to take localSystem directly
This is instead of both system and platform, which is kind of ugly.
2017-02-08 22:06:57 -05:00
John Ericson
5eaea6cee0 cross stdenv: let build package's build deps resolve to native packages
This fixes the "sliding window" principle:
  0. Run packages:       build = native;  host = foreign; target = foreign;
  1. Build packages:     build = native;  host = native;  target = foreign;
  2. Vanilla packages:   build = native;  host = native;  target = native;
  3. Vanilla packages:   build = native;  host = native;  target = native;
  n+3. ...

Each stage's build dependencies are resolved against the previous stage,
and the "foreigns" are shifted accordingly. Vanilla packages alone are
built against themsevles, since there are no more "foreign"s to shift away.

Before, build packages' build dependencies were resolved against
themselves:
  0. Run packages:       build = native;  host = foreign; target = foreign;
  1. Build packages:     build = native;  host = native;  target = foreign;
  2. Build packages:     build = native;  host = native;  target = foreign;
  n+2. ...

This is wrong because that principle is violated by the target
platform staying foreign.

This will change the hashes of many build packages and run packages, but
that is OK. This is an unavoidable cost of fixing cross compiling.

The cross compilation docs have been updated to reflect this fix.
2017-02-05 12:01:53 -05:00
John Ericson
39fb46f538 nixpkgs docs: Cross compilation docs 2017-01-24 11:37:56 -05:00