treewide: fixup breakage due to absolute compiler path

Some packages just can't handle them #44767.  It was tempting to try
to abstract this in some way, but I didn't do that ATM.

pkgs/development/libraries/zeroc-ice/default.nix

@@ -27,6 +27,11 @@ stdenv.mkDerivation rec {
         --replace xcrun ""
   '';
 
+  preConfigure = ''
+    CC=${stdenv.cc.targetPrefix}cc
+    CXX=${stdenv.cc.targetPrefix}c++
+  '';
+
   makeFlags = [ "prefix=$(out)" "OPTIMIZE=yes" ];
 
   enableParallelBuilding = true;