Merge pull request #44912 from thefloweringash/dcraw-darwin

dcraw: fix build on Darwin

pkgs/tools/graphics/dcraw/default.nix

@@ -1,4 +1,4 @@
-{stdenv, fetchurl, libjpeg, lcms2, gettext, jasper }:
+{stdenv, fetchurl, libjpeg, lcms2, gettext, jasper, libiconv }:
 
 stdenv.mkDerivation rec {
   name = "dcraw-9.28.0";
@@ -8,15 +8,18 @@ stdenv.mkDerivation rec {
     sha256 = "1fdl3xa1fbm71xzc3760rsjkvf0x5jdjrvdzyg2l9ka24vdc7418";
   };
 
+  nativeBuildInputs = stdenv.lib.optional stdenv.isDarwin libiconv;
   buildInputs = [ libjpeg lcms2 gettext jasper ];
 
   patchPhase = ''
-    sed -i -e s@/usr/local@$out@ install
+    substituteInPlace install \
+      --replace 'prefix=/usr/local' 'prefix=$out' \
+      --replace gcc '$CC'
   '';
 
   buildPhase = ''
     mkdir -p $out/bin
-    sh install
+    sh -e install
   '';
 
   meta = {