Commit Graph

21 Commits

Author SHA1 Message Date
Matthew Bauer
9c8fd41224 treewide: add emulator to platform
You can use stdenv.hostPlatform.emulator to get an executable that
runs cross-built binaries. This could be any emulator. For instance,
we use QEMU to emulate Linux targets and Wine to emulate Windows
targets. To work with qemu, we need to support custom targets.

I’ve reworked the cross tests in pkgs/test/cross to use this
functionality.

Also, I’ve used talloc to cross-execute with the emulator. There
appears to be a cross-execute for all waf builds. In the future, it
would be nice to set this for all waf builds.

Adds stdenv.hostPlatform.qemuArch attrbute to get the qemuArch for
each platform.
2018-11-29 19:15:30 -06:00
Matthew Bauer
72e3b2a662 systems: add avrlibc for avr systems 2018-10-29 14:34:09 -05:00
Matthew Bauer
45cc6e2a42 lib/systems: use lookup for uname.system
This is a little bit cleaner and avoids the if ... else if ... chain.
2018-10-17 14:43:49 -05:00
Matthew Bauer
0e0894c37d lib/systems: add uname attrs 2018-10-16 21:48:43 -05:00
Matthew Bauer
0bfffbc5e1 xcode: add xcodePlatform to system
This give us a little bit more control over what target we are using.
Eventually we can target other things like WatchOS or MacOS.
2018-06-25 22:18:23 -04:00
John Ericson
58b2e875c2 lib/systems: Prohibit "gnu" ABI (*-gnu) with 32-bit ARM
It is ambiguous, and therefore banned within GCC.
2018-05-10 15:05:23 -04:00
John Ericson
b3ef322770 Merge commit '70963b382f3f820ba6d3bc3b3aaf50a2957ec1ff' into uclibc 2018-05-10 00:18:51 -04:00
John Ericson
e42a7a5c0b lib/systems: Add uClibc just like MUSL 2018-05-09 23:39:23 -04:00
Ken Micklas
ef3db7d14c ios-sdk-pkgs: Init from iOS SDK from XCode 2018-04-19 16:09:30 -04:00
John Ericson
c26252af3e lib, stdenv: Check meta.platforms against host platform and be open world
First, we need check against the host platform, not the build platform.
That's simple enough.

Second, we move away from exahustive finite case analysis (i.e.
exhaustively listing all platforms the package builds on). That only
work in a closed-world setting, where we know all platforms we might
build one. But with cross compilation, we may be building for arbitrary
platforms, So we need fancier filters. This is the closed world to open
world change.

The solution is instead of having a list of systems (strings in the form
"foo-bar"), we have a list of of systems or "patterns", i.e. attributes
that partially match the output of the parsers in `lib.systems.parse`.
The "check meta" logic treats the systems strings as an exact whitelist
just as before, but treats the patterns as a fuzzy whitelist,
intersecting the actual `hostPlatform` with the pattern and then
checking for equality. (This is done using `matchAttrs`).

The default convenience lists for `meta.platforms` are now changed to be
lists of patterns (usually a single pattern) in
`lib/systems/for-meta.nix` for maximum flexibility under this new
system.

Fixes #30902
2018-03-15 00:44:34 -04:00
John Ericson
2482e2858e prebuilt android tools: Init using SDK
Expose as an option for the cross stdenv.
2018-02-27 14:15:39 -05:00
Will Dietz
f090bbb248 Drop "isGlibc", but keep isMusl.
gnu "abi" doesn't mean glibc (mingw, apparently).
2018-02-11 14:55:17 -06:00
Will Dietz
2dfee94fe7 lib/systems: musl, libc predicates
Note this doesn't actually provide musl support yet,
just improves our "system" code to understand
musl-based triples and non-glibc linux configurations.
2018-02-11 14:20:14 -06:00
John Ericson
bc9f471997 Merge pull request #27797 from grahamc/fixed-lib
Convert libs to a fixed-point
2017-09-19 10:52:15 -04:00
Graham Christensen
152c63c9ff
Convert libs to a fixed-point
This does break the API of being able to import any lib file and get
its libs, however I'm not sure people did this.

I made this while exploring being able to swap out docFn with a stub
in #2305, to avoid functor performance problems. I don't know if that
is going to move forward (or if it is a problem or not,) but after
doing all this work figured I'd put it up anyway :)

Two notable advantages to this approach:

1. when a lib inherits another lib's functions, it doesn't
   automatically get put in to the scope of lib
2. when a lib implements a new obscure functions, it doesn't
   automatically get put in to the scope of lib

Using the test script (later in this commit) I got the following diff
on the API:

  + diff master fixed-lib
  11764a11765,11766
  > .types.defaultFunctor
  > .types.defaultTypeMerge
  11774a11777,11778
  > .types.isOptionType
  > .types.isType
  11781a11786
  > .types.mkOptionType
  11788a11794
  > .types.setType
  11795a11802
  > .types.types

This means that this commit _adds_ to the API, however I can't find a
way to fix these last remaining discrepancies. At least none are
_removed_.

Test script (run with nix-repl in the PATH):

  #!/bin/sh

  set -eux

  repl() {
      suff=${1:-}
      echo "(import ./lib)$suff" \
          | nix-repl 2>&1
  }

  attrs_to_check() {
      repl "${1:-}" \
          | tr ';'  $'\n' \
          | grep "\.\.\." \
          | cut -d' ' -f2 \
          | sed -e "s/^/${1:-}./" \
          | sort
  }

  summ() {
      repl "${1:-}" \
          | tr ' ' $'\n' \
          | sort \
          | uniq
  }

  deep_summ() {
      suff="${1:-}"
      depth="${2:-4}"
      depth=$((depth - 1))
      summ "$suff"

      for attr in $(attrs_to_check "$suff" | grep -v "types.types"); do
          if [ $depth -eq 0 ]; then
              summ "$attr" | sed -e "s/^/$attr./"
          else
              deep_summ "$attr" "$depth" | sed -e "s/^/$attr./"
          fi
      done
  }

  (
      cd nixpkgs

      #git add .
      #git commit -m "Auto-commit, sorry" || true
      git checkout fixed-lib
      deep_summ > ../fixed-lib
      git checkout master
      deep_summ > ../master
  )

  if diff master fixed-lib; then
      echo "SHALLOW MATCH!"
  fi

  (
      cd nixpkgs
      git checkout fixed-lib
      repl .types
  )
2017-09-16 21:36:43 -04:00
John Ericson
741839a687 lib: Add *Platform.extensions
This is used to platform specific library and exectuable extensions. In
the next commit I'll replace a bunch of ad-hoc logic with it.
2017-09-13 11:07:50 -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
John Ericson
c5c6606048 lib: Infer libc field of platform if not specified
This is especially useful when not cross compiling. It means we can
remove the `stdenv.isGlibc` predicate too.

Additionally, use this to simplify the logic to choose the
appropriate libiconv derivation.
2017-05-22 00:25:02 -04:00
John Ericson
2e7ec6fb70 lib: Make platform predicates more ergonomic to use
`hostPlatform.isDarwin` instead of `lib.system.parse.isDarwin
hostPlatform.parsed`
2017-05-22 00:25:02 -04:00
John Ericson
3efc661a1d Elaborate localSystem and crossSystem in a consistent manner 2017-04-17 17:13:01 -04:00
John Ericson
2227789392 lib: Collect system/platform related files
Previously, platforms was a random thing in top-level
2017-04-17 17:13:01 -04:00