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