Making, in cross-builds, every buildInput a propagatedBuildInput. We need

this because 'ld' wants to know the path of every library involved in a dynamic
linking. I imagine that ld does not need that in native builds because it can
call the loader for it to resolve the library rpaths, but this is not the case
for cross-building.


svn path=/nixpkgs/branches/stdenv-updates/; revision=18577

pkgs/stdenv/adapters.nix

@@ -147,8 +147,14 @@ rec {
                       ++ nativeInputsFromBuildInputs
                       ++ [ gccCross binutilsCross ] ++
                       stdenv.lib.optional selfBuildNativeInput buildDrv;
-                    buildInputs = buildInputsDrvs;
-                    propagatedBuildInputs = propagatedBuildInputsDrvs;
+
+                    # Cross-linking dynamic libraries, every buildInput should
+                    # be propagated because ld needs the -rpath-link to find
+                    # any library needed to link the program dynamically at
+                    # loader time. ld(1) explains it.
+                    buildInputs = [];
+                    propagatedBuildInputs = propagatedBuildInputsDrvs +
+                      buildInputsDrvs;
                     propagatedBuildNativeInputs = propagatedBuildNativeInputsDrvs;
 
                     crossConfig = cross.config;