openalSoft: support cross-compilation

It failed with 'missing gnu/stubs-32.h'.
Adding glibc to buildInputs helps.

Co-authored-by: symphorien+git@xlumurb.eu

pkgs/development/libraries/openal-soft/default.nix

@@ -23,9 +23,12 @@ stdenv.mkDerivation rec {
       --replace "@OUT@" $out
   '';
 
+  strictDeps = true;
+
   nativeBuildInputs = [ cmake ];
 
-  buildInputs = lib.optional alsaSupport alsa-lib
+  buildInputs = lib.optional (stdenv.buildPlatform != stdenv.hostPlatform) stdenv.cc.libc
+    ++ lib.optional alsaSupport alsa-lib
     ++ lib.optional pulseSupport libpulseaudio
     ++ lib.optionals stdenv.isDarwin [ CoreServices AudioUnit AudioToolbox ];