libtool: Separate libltdl from the main package

Some packages have a runtime dependency on libltdl, but shouldn't
depend on the rest of libtool (which in turn depends on binutils and
other stdenv tools).  For example, splitting off libltdl cuts about 35
MiB from the closure of PulseAudio.

pkgs/build-support/multiple-outputs.nix

@@ -9,12 +9,16 @@ stdenv.mkDerivation (args // {
   configureFlags =
     optionals (elem "bin" outputs)
       [ "--bindir=$(bin)/bin" "--mandir=$(bin)/share/man" ]
+    ++ optionals (elem "lib" outputs)
+      [ "--libdir=$(lib)/lib" ]
     ++ optional (elem "dev" outputs)
-      "--includedir=$(dev)/include";
+      "--includedir=$(dev)/include"
+    ++ args.configureFlags or [];
 
   installFlags =
     optionals (elem "dev" outputs)
-      [ "pkgconfigdir=$(dev)/lib/pkgconfig" "m4datadir=$(dev)/share/aclocal" ];
+      [ "pkgconfigdir=$(dev)/lib/pkgconfig" "m4datadir=$(dev)/share/aclocal" "aclocaldir=$(dev)/share/aclocal" ]
+    ++ args.installFlags or [];
 
   postInstall =
     ''
@@ -31,15 +35,17 @@ stdenv.mkDerivation (args // {
           echo "$propagatedBuildInputs" > "$dev/nix-support/propagated-build-inputs"
           propagatedBuildInputs=
         fi
-        echo "$propagatedBuildNativeInputs $out" > "$dev/nix-support/propagated-build-native-inputs"
+        echo "$out $lib $propagatedBuildNativeInputs" > "$dev/nix-support/propagated-build-native-inputs"
         propagatedBuildNativeInputs=
+      elif [ -n "$out" ]; then
+        propagatedBuildNativeInputs="$lib $propagatedBuildNativeInputs"
       fi
 
-      if [ -n "$bin" ]; then
-        prefix="$bin" stripDirs "bin sbin" "${stripDebugFlags:--S}"
-        prefix="$bin" patchELF
-        patchShebangs "$bin"
-      fi
+      for i in $bin $lib; do
+        prefix="$i" stripDirs "lib lib64 libexec bin sbin" "${stripDebugFlags:--S}"
+        prefix="$i" patchELF
+        patchShebangs "$i"
+      done
     ''; # */
 
 })

pkgs/development/tools/misc/libtool/libtool2.nix

@@ -1,6 +1,6 @@
 { stdenv, fetchurl, m4, perl, lzma }:
 
-stdenv.mkDerivation (rec {
+stdenv.mkDerivation rec {
   name = "libtool-2.4.2";
 
   src = fetchurl {
@@ -10,6 +10,8 @@ stdenv.mkDerivation (rec {
 
   buildNativeInputs = [ lzma m4 perl ];
 
+  outputs = [ "out" "lib" ];
+
   # Don't fixup "#! /bin/sh" in Libtool, otherwise it will use the
   # "fixed" path in generated files!
   dontPatchShebangs = true;
@@ -18,6 +20,10 @@ stdenv.mkDerivation (rec {
   # leads to the failure of a number of tests.
   doCheck = false;
 
+  # Don't run the native `strip' when cross-compiling.  This breaks at least
+  # with `.a' files for MinGW.
+  dontStrip = stdenv ? cross;
+
   meta = {
     description = "GNU Libtool, a generic library support script";
 
@@ -38,11 +44,3 @@ stdenv.mkDerivation (rec {
     maintainers = [ stdenv.lib.maintainers.ludo ];
   };
 }
-
-//
-
-# Don't run the native `strip' when cross-compiling.  This breaks at least
-# with `.a' files for MinGW.
-(if (stdenv ? cross)
- then { dontStrip = true; }
- else { }))

pkgs/top-level/all-packages.nix

@@ -3111,7 +3111,9 @@ let
 
   libtool_1_5 = callPackage ../development/tools/misc/libtool { };
 
-  libtool_2 = callPackage ../development/tools/misc/libtool/libtool2.nix { };
+  libtool_2 = callPackage ../development/tools/misc/libtool/libtool2.nix {
+    stdenv = stdenvMulti;
+  };
 
   lsof = callPackage ../development/tools/misc/lsof { };