cross GCC: Fix some paths to libc headers (after multiple outputs)

It's not completely clear to me why the path to libc headers is set
differently when cross building...

1 files changed, 1 insertions, 0 deletions

diff --git a/pkgs/build-support/gcc-cross-wrapper/default.nix b/pkgs/build-support/gcc-cross-wrapper/default.nix
index fe2a530e1e8e..505d80a6b2ac 100644
--- a/pkgs/build-support/gcc-cross-wrapper/default.nix
+++ b/pkgs/build-support/gcc-cross-wrapper/default.nix
@@ -46,6 +46,7 @@ stdenv.mkDerivation {
   addFlags = ./add-flags;
   inherit nativeTools nativeLibc nativePrefix gcc binutils;
   libc = if libc ? out then libc.out else libc;
+  libc_dev = if libc ? dev then libc.dev else libc;
   crossConfig = if cross != null then cross.config else null;
   osxMinVersion = cross.osxMinVersion or null;
   gccLibs = if gcc != null then gccLibs else null;