114 lines
4.1 KiB
Nix
114 lines
4.1 KiB
Nix
{ lib, stdenv
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, makeWrapper
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, runCommand, wrapBintoolsWith, wrapCCWith
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, buildAndroidndk, androidndk, targetAndroidndkPkgs
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}:
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let
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# Mapping from a platform to information needed to unpack NDK stuff for that
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# platform.
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#
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# N.B. The Android NDK uses slightly different LLVM-style platform triples
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# than we do. We don't just use theirs because ours are less ambiguous and
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# some builds need that clarity.
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ndkInfoFun = { config, ... }: {
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x86_64-apple-darwin = {
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double = "darwin-x86_64";
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};
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x86_64-unknown-linux-gnu = {
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double = "linux-x86_64";
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};
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i686-unknown-linux-android = {
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triple = "i686-linux-android";
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arch = "x86";
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toolchain = "x86";
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gccVer = "4.9";
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};
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x86_64-unknown-linux-android = {
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triple = "x86_64-linux-android";
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arch = "x86_64";
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toolchain = "x86_64";
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gccVer = "4.9";
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};
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armv7a-unknown-linux-androideabi = {
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arch = "arm";
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triple = "arm-linux-androideabi";
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toolchain = "arm-linux-androideabi";
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gccVer = "4.9";
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};
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aarch64-unknown-linux-android = {
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arch = "arm64";
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triple = "aarch64-linux-android";
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toolchain = "aarch64-linux-android";
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gccVer = "4.9";
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};
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}.${config} or
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(throw "Android NDK doesn't support ${config}, as far as we know");
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hostInfo = ndkInfoFun stdenv.hostPlatform;
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targetInfo = ndkInfoFun stdenv.targetPlatform;
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prefix = lib.optionalString (stdenv.targetPlatform != stdenv.hostPlatform) (stdenv.targetPlatform.config + "-");
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in
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rec {
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# Misc tools
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binaries = runCommand "ndk-toolchain-binutils" {
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pname = "ndk-toolchain-binutils";
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inherit (androidndk) version;
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isClang = true; # clang based cc, but bintools ld
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nativeBuildInputs = [ makeWrapper ];
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propagatedBuildInputs = [ androidndk ];
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} ''
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mkdir -p $out/bin
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# llvm toolchain
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for prog in ${androidndk}/libexec/android-sdk/ndk-bundle/toolchains/llvm/prebuilt/${hostInfo.double}/bin/*; do
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ln -s $prog $out/bin/$(basename $prog)
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ln -s $prog $out/bin/${prefix}$(basename $prog)
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done
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# bintools toolchain
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for prog in ${androidndk}/libexec/android-sdk/ndk-bundle/toolchains/${targetInfo.toolchain}-${targetInfo.gccVer}/prebuilt/${hostInfo.double}/bin/*; do
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prog_suffix=$(basename $prog | sed 's/${targetInfo.triple}-//')
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ln -s $prog $out/bin/${stdenv.targetPlatform.config}-$prog_suffix
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done
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# shitty googly wrappers
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rm -f $out/bin/${stdenv.targetPlatform.config}-gcc $out/bin/${stdenv.targetPlatform.config}-g++
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'';
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binutils = wrapBintoolsWith {
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bintools = binaries;
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libc = targetAndroidndkPkgs.libraries;
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};
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clang = wrapCCWith {
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cc = binaries // {
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# for packages expecting libcompiler-rt, etc. to come from here (stdenv.cc.cc.lib)
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lib = targetAndroidndkPkgs.libraries;
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};
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bintools = binutils;
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libc = targetAndroidndkPkgs.libraries;
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extraBuildCommands = ''
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echo "-D__ANDROID_API__=${stdenv.targetPlatform.sdkVer}" >> $out/nix-support/cc-cflags
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echo "-target ${stdenv.targetPlatform.config}" >> $out/nix-support/cc-cflags
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echo "-resource-dir=$(echo ${androidndk}/libexec/android-sdk/ndk-bundle/toolchains/llvm/prebuilt/${hostInfo.double}/lib*/clang/*)" >> $out/nix-support/cc-cflags
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echo "--gcc-toolchain=${androidndk}/libexec/android-sdk/ndk-bundle/toolchains/${targetInfo.toolchain}-${targetInfo.gccVer}/prebuilt/${hostInfo.double}" >> $out/nix-support/cc-cflags
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'';
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};
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# Bionic lib C and other libraries.
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#
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# We use androidndk from the previous stage, else we waste time or get cycles
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# cross-compiling packages to wrap incorrectly wrap binaries we don't include
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# anyways.
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libraries = runCommand "bionic-prebuilt" {} ''
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mkdir -p $out
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cp -r ${buildAndroidndk}/libexec/android-sdk/ndk-bundle/sysroot/usr/include $out/include
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chmod +w $out/include
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cp -r ${buildAndroidndk}/libexec/android-sdk/ndk-bundle/sysroot/usr/include/${targetInfo.triple}/* $out/include
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ln -s ${buildAndroidndk}/libexec/android-sdk/ndk-bundle/platforms/android-${stdenv.hostPlatform.sdkVer}/arch-${hostInfo.arch}/usr/${if hostInfo.arch == "x86_64" then "lib64" else "lib"} $out/lib
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'';
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}
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