steam: fix steam on x86_64

1 files changed, 121 insertions, 37 deletions

diff --git a/pkgs/build-support/build-fhs-chrootenv/default.nix b/pkgs/build-support/build-fhs-chrootenv/default.nix
index e807a04628a3..411e73ab8102 100644
--- a/pkgs/build-support/build-fhs-chrootenv/default.nix
+++ b/pkgs/build-support/build-fhs-chrootenv/default.nix
@@ -1,16 +1,50 @@
-{stdenv, glibc, glibcLocales, gcc, coreutils, diffutils, findutils, gnused, gnugrep, gnutar, gzip, bzip2, 
-bashInteractive, xz, shadow, gawk, less, buildEnv}:
-{name, pkgs ? [], profile ? ""}:
+{ buildEnv, nixpkgs, nixpkgs_i686, system
+, stdenv, glibc, glibc_multi, glibcLocales
+, bashInteractive, coreutils, less, shadow su
+, gawk, gcc, diffutils, findutils, gnused, gnugrep
+, gnutar, gzip, bzip2, xz
+} :
+{ name, pkgs ? [], profile ? ""
+, targetPkgs ? null, multiPkgs ? null
+, extraBuildCommands ? "", extraBuildCommandsMulti ? ""
+}:
+
+assert pkgs       != []   -> targetPkgs == null && multiPkgs == null;
+assert targetPkgs != null -> multiPkgs  != null;
+assert multiPkgs  != null -> targetPkgs != null;
+assert targetPkgs != null -> pkgs       == [];
 
 let
-  basePkgs = [
-    glibc glibcLocales gcc coreutils diffutils findutils gnused gnugrep gnutar
-    gzip bzip2 bashInteractive xz shadow gawk less
-  ];
+  is64Bit       = system == "x86_64-linux";
+  # enable multi builds on x86_64 hosts if pakgs_target/multi are defined
+  isMultiBuild  = is64Bit && targetPkgs != null;
+  isNormalBuild = !isMultiBuild;
+
+  # list of packages (usually programs) which will only be installed for the
+  # hosts architecture
+  targetPaths = if targetPkgs == null
+                  then pkgs
+                  else targetPkgs nixpkgs ++ multiPkgs nixpkgs;
+
+  # list of pckages which should be build for both x86 and x86_64 on x86_64
+  # systems
+  multiPaths = if isMultiBuild
+                  then multiPkgs nixpkgs_i686
+                  else [];
+
+  # base packages of the chroot
+  # these match the hosts architecture, glibc_multi will be choosen
+  # on multi builds
+  basePkgs =
+    [ (if isMultiBuild then glibc_multi else glibc)
+      bashInteractive coreutils less shadow su
+      gawk gcc diffutils findutils gnused gnugrep
+      gnutar gzip bzip2 xz
+    ];
 
   # Compose a global profile for the chroot environment
-  profilePkg = stdenv.mkDerivation {
-    name = "${name}-chrootenv-profile";
+  profilePkg = nixpkgs.stdenv.mkDerivation {
+    name         = "${name}-chrootenv-profile";
     buildCommand = ''
       mkdir -p $out/etc
       cat >> $out/etc/profile << "EOF"
@@ -20,67 +54,117 @@ let
     '';
   };
 
-  paths = basePkgs ++ [ profilePkg ] ++ pkgs;
-
   # Composes a /usr like directory structure
-  staticUsrProfile = buildEnv {
-    name = "system-profile";
-    inherit paths;
+  staticUsrProfileTarget = buildEnv {
+    name = "system-profile-target";
+    paths = basePkgs ++ [ profilePkg ] ++ targetPaths;
   };
-  
+
+  staticUsrProfileMulti = buildEnv {
+    name = "system-profile-multi";
+    paths = multiPaths;
+  };
+
   # References to shell scripts that set up or tear down the environment
-  initSh = ./init.sh.in;
-  mountSh = ./mount.sh.in;
-  loadSh = ./load.sh.in;
-  umountSh = ./umount.sh.in;
+  initSh    = ./init.sh.in;
+  mountSh   = ./mount.sh.in;
+  loadSh    = ./load.sh.in;
+  umountSh  = ./umount.sh.in;
   destroySh = ./destroy.sh.in;
-in
-stdenv.mkDerivation {
-  name = "${name}-chrootenv";
-  buildCommand = ''
-    mkdir -p $out/sw
-    cd $out/sw
-    
-    for i in ${staticUsrProfile}/{etc,bin,lib{,32,64},sbin,var}
-    do
+
+  linkProfile = profile: ''
+    for i in ${profile}/{etc,bin,lib{,32,64},sbin,share,var}; do
         if [ -x "$i" ]
         then
             ln -s "$i"
         fi
     done
-    
-    ln -s ${staticUsrProfile} usr
-    
+  '';
+
+  # the target profile is the actual profile that will be used for the chroot
+  setupTargetProfile = ''
+    ${linkProfile staticUsrProfileTarget}
+    mkdir -m0755 usr
+    cd usr
+    ${linkProfile staticUsrProfileTarget}
+    cd ..
+  '';
+
+  # this will happen on x86_64 host:
+  # /x86         -> links to the whole profile defined by multiPaths
+  # /lib, /lib32 -> links to 32bit binaries
+  # /lib64       -> links to 64bit binaries
+  # /usr/lib*    -> same as above
+  setupMultiProfile = if isNormalBuild then "" else ''
+    mkdir -m0755 x86
+    cd x86
+    ${linkProfile staticUsrProfileMulti}
+    cd ..
+
+    ${setupLibDirs}
+
+    cd usr
+    ${setupLibDirs}
     cd ..
-    
+  '';
+
+  setupLibDirs = ''
+    rm -f lib lib32 lib64
+    mkdir -m0755 lib
+    # copy glibc stuff
+    cp -rs  ${staticUsrProfileTarget}/lib/32/* lib/
+    # copy contents of multiPaths
+    cp -rsf ${staticUsrProfileMulti}/lib/*     lib/
+
+    ln -s lib lib32
+    ln -s ${staticUsrProfileTarget}/lib lib64
+  '';
+
+in stdenv.mkDerivation {
+  name         = "${name}-chrootenv";
+  buildCommand = ''
+    mkdir -p "$out/sw"
+    cd "$out/sw"
+    ${setupTargetProfile}
+    ${setupMultiProfile}
+    cd ..
+
     mkdir -p bin
     cd bin
-    
+
     sed -e "s|@chrootEnv@|$out|g" \
         -e "s|@name@|${name}|g" \
         -e "s|@shell@|${stdenv.shell}|g" \
         ${initSh} > init-${name}-chrootenv
     chmod +x init-${name}-chrootenv
-    
+
     sed -e "s|@shell@|${stdenv.shell}|g" \
         -e "s|@name@|${name}|g" \
         ${mountSh} > mount-${name}-chrootenv
     chmod +x mount-${name}-chrootenv
-    
+
     sed -e "s|@shell@|${stdenv.shell}|g" \
         -e "s|@name@|${name}|g" \
         ${loadSh} > load-${name}-chrootenv
     chmod +x load-${name}-chrootenv
-    
+
     sed -e "s|@shell@|${stdenv.shell}|g" \
         -e "s|@name@|${name}|g" \
         ${umountSh} > umount-${name}-chrootenv
     chmod +x umount-${name}-chrootenv
-    
+
     sed -e "s|@chrootEnv@|$out|g" \
         -e "s|@shell@|${stdenv.shell}|g" \
         -e "s|@name@|${name}|g" \
         ${destroySh} > destroy-${name}-chrootenv
     chmod +x destroy-${name}-chrootenv
+
+    cd ..
+
+    cd "$out/sw"
+    ${extraBuildCommands}
+    cd "$out/sw"
+    ${extraBuildCommandsMulti}
+    cd ..
   '';
 }