diff options
| -rw-r--r-- | README.md | 11 | ||||
| -rw-r--r-- | buildRustCrateHelpers.nix | 18 | ||||
| -rw-r--r-- | default.nix | 19 | ||||
| -rw-r--r-- | hello/Cargo.lock | 4 | ||||
| -rw-r--r-- | hello/Cargo.nix | 26 | ||||
| -rw-r--r-- | hello/Cargo.toml | 6 | ||||
| -rw-r--r-- | hello/crates-io.nix | 8 | ||||
| -rw-r--r-- | hello/src/main.rs | 3 |
8 files changed, 95 insertions, 0 deletions
diff --git a/README.md b/README.md new file mode 100644 index 0000000..3ab75e2 --- /dev/null +++ b/README.md @@ -0,0 +1,11 @@ +Test repo to figure out cross compilation with carnix + +AFAICT individual packages are largely agnostic wrt. what they're being compiled for. +nixpkgs-unstable has neat support for cross compilation without fancy flags: + +``` + file $(nix-build --no-out-link '<nixpkgs>' -A pkgsCross.aarch64-multiplatform.hello)/bin/hello + /nix/store/6924zrj4fww7xs7qzxfidj5n7id6qngi-hello-2.10-aarch64-unknown-linux-gnu/bin/hello: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /nix/store/rcj93w6gk9l6w9jgmqx911iycs2ya9rg-glibc-2.27-aarch64-unknown-linux-gnu/lib/ld-linux-aarch64.so.1, for GNU/Linux 2.6.32, not stripped +``` + +There *is* a pkgsCross.musl64, but it seems to link musl dynamically, not sure what's up with that. diff --git a/buildRustCrateHelpers.nix b/buildRustCrateHelpers.nix new file mode 100644 index 0000000..3fdcb66 --- /dev/null +++ b/buildRustCrateHelpers.nix @@ -0,0 +1,18 @@ +{ lib, buildPlatform }: { + kernel = buildPlatform.parsed.kernel.name; + abi = buildPlatform.parsed.abi.name; + include = includedFiles: src: builtins.filterSource (path: type: + lib.lists.any (f: + let p = toString (src + ("/" + f)); in + (path == p) || (type == "directory" && lib.strings.hasPrefix path p) + ) includedFiles + ) src; + updateFeatures = f: up: functions: builtins.deepSeq f (lib.lists.foldl' (features: fun: fun features) (lib.attrsets.recursiveUpdate f up) functions); + mapFeatures = features: map (fun: fun { features = features; }); + mkFeatures = feat: lib.lists.foldl (features: featureName: + if feat.${featureName} or false then + [ featureName ] ++ features + else + features + ) [] (builtins.attrNames feat); +} diff --git a/default.nix b/default.nix new file mode 100644 index 0000000..76c11cf --- /dev/null +++ b/default.nix @@ -0,0 +1,19 @@ +let + overlay = self: super: rec { + buildRustCrateHelpers = self.callPackage ./buildRustCrateHelpers.nix {}; + + carnix-cross-test = self.callPackage hello/Cargo.nix { + cratesIO = self.callPackage hello/crates-io.nix { }; + }; + + rustHello = carnix-cross-test.hello {}; + }; + + nixpkgs = import (builtins.fetchTarball https://nixos.org/channels/nixos-unstable/nixexprs.tar.xz) { + overlays = [ overlay ]; + }; +in { + inherit (nixpkgs.pkgsCross.aarch64-multiplatform) + hello + rustHello; +} diff --git a/hello/Cargo.lock b/hello/Cargo.lock new file mode 100644 index 0000000..15b9446 --- /dev/null +++ b/hello/Cargo.lock @@ -0,0 +1,4 @@ +[[package]] +name = "hello" +version = "0.1.0" + diff --git a/hello/Cargo.nix b/hello/Cargo.nix new file mode 100644 index 0000000..4db6737 --- /dev/null +++ b/hello/Cargo.nix @@ -0,0 +1,26 @@ +# Generated by carnix 0.8.5: /home/till/.cargo/bin/carnix nix --src ./. +{ lib, buildPlatform, buildRustCrate, buildRustCrateHelpers, cratesIO, fetchgit }: +with buildRustCrateHelpers; +let inherit (lib.lists) fold; + inherit (lib.attrsets) recursiveUpdate; +in +let crates = cratesIO // rec { + crates.hello."0.1.0" = deps: { features?(features_.hello."0.1.0" deps {}) }: buildRustCrate { + crateName = "hello"; + version = "0.1.0"; + authors = [ "till" ]; + src = ./.; + }; + features_.hello."0.1.0" = deps: f: updateFeatures f (rec { + hello."0.1.0".default = (f.hello."0.1.0".default or true); + }) []; + + + +}; in + +rec { + hello = crates.crates.hello."0.1.0" deps; + __all = [ (hello {}) ]; + deps.hello."0.1.0" = {}; +} diff --git a/hello/Cargo.toml b/hello/Cargo.toml new file mode 100644 index 0000000..e968470 --- /dev/null +++ b/hello/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "hello" +version = "0.1.0" +authors = ["till"] + +[dependencies] diff --git a/hello/crates-io.nix b/hello/crates-io.nix new file mode 100644 index 0000000..7a0e584 --- /dev/null +++ b/hello/crates-io.nix @@ -0,0 +1,8 @@ +{ lib, buildRustCrate, buildRustCrateHelpers }: +with buildRustCrateHelpers; +let inherit (lib.lists) fold; + inherit (lib.attrsets) recursiveUpdate; +in +rec { + +} diff --git a/hello/src/main.rs b/hello/src/main.rs new file mode 100644 index 0000000..e7a11a9 --- /dev/null +++ b/hello/src/main.rs @@ -0,0 +1,3 @@ +fn main() { + println!("Hello, world!"); +} |