DGNum/liminix
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build kernel only once for multiple outputs

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e.g. vmlinux + zImage
This commit is contained in:
Daniel Barlow 2024-01-02 19:40:57 +00:00
parent e4ed9dbec9
commit ff991508ae
4 changed files with 23 additions and 13 deletions
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8
pkgs/kernel/default.nix
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@ -13,6 +13,7 @@ let
writeConfig = import ./write-kconfig.nix { inherit lib writeText; };
kconfigFile = writeConfig "kconfig" config;
arch = stdenv.hostPlatform.linuxArch;
targetNames = map baseNameOf targets;
inherit lib; in
stdenv.mkDerivation rec {
name = "kernel";
@ -35,7 +36,7 @@ stdenv.mkDerivation rec {
dontStrip = true;
dontPatchELF = true;
outputs = ["out" "headers" "modulesupport"];
outputs = ["out" "headers" "modulesupport"] ++ targetNames;
phases = [
"unpackPhase"
"butcherPkgconfig"
@ -92,12 +93,13 @@ stdenv.mkDerivation rec {
'';
buildPhase = ''
make ${lib.concatStringsSep " " (map baseNameOf targets)} modules_prepare -j$NIX_BUILD_CORES
make ${lib.concatStringsSep " " targetNames} modules_prepare -j$NIX_BUILD_CORES
'';
installPhase = ''
${CROSS_COMPILE}strip -d vmlinux
cp ${lib.concatStringsSep " " targets} $out
${lib.concatStringsSep "\n" (map (f: "cp ${f} \$${baseNameOf f}") targets)}
cp vmlinux $out
mkdir -p $headers
cp -a include .config $headers/
mkdir -p $modulesupport