diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 1609c6fac7e..2cd659a5e75 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -6871,8 +6871,11 @@ let
   # glibc provides libiconv so systems with glibc don't need to build libiconv
   # separately, but we also provide libiconvReal, which will always be a
   # standalone libiconv, just in case you want it
-  libiconv =
-    if stdenv.isGlibc then stdenv.cc.libc
+  libiconv = if crossSystem != null then
+    (if crossSystem.libc == "glibc" then libcCross
+      else if crossSystem.libc == "libSystem" then darwin.libiconv
+      else libiconvReal)
+    else if stdenv.isGlibc then stdenv.cc.libc
     else if stdenv.isDarwin then darwin.libiconv
     else libiconvReal;