otfcc: fix aarch64 compatibility

pkgs/tools/misc/otfcc/default.nix

@@ -13,16 +13,16 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ premake5 ];
 
-  # Don’t guess where our makefiles will end up. Just use current
-  # directory.
-  patchPhase = ''
-    substituteInPlace premake5.lua \
-      --replace 'location "build/gmake"' 'location "."'
-  '';
+  patches = [
+    ./fix-aarch64.patch
+    ./move-makefiles.patch
+  ];
+
+  buildFlags = stdenv.lib.optional stdenv.isAarch64 [ "config=release_arm" ];
 
   installPhase = ''
     mkdir -p $out/bin
-    cp bin/release-x*/otfcc* $out/bin/
+    cp bin/release-*/otfcc* $out/bin/
   '';
 
   enableParallelBuilding = true;
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
     description = "Optimized OpenType builder and inspector";
     homepage = "https://github.com/caryll/otfcc";
     license = licenses.asl20;
-    platforms = [ "i686-linux" "x86_64-linux" "x86_64-darwin" ];
+    platforms = [ "aarch64-linux" "i686-linux" "x86_64-linux" "x86_64-darwin" ];
     maintainers = with maintainers; [ jfrankenau ttuegel ];
   };
 

pkgs/tools/misc/otfcc/fix-aarch64.patch

@@ -0,0 +1,22 @@
+diff --git a/premake5.lua b/premake5.lua
+index 997fd79..54a20a0 100644
+--- a/premake5.lua
++++ b/premake5.lua
+@@ -49,7 +49,7 @@ end
+ workspace "otfcc"
+ 	configurations { "release", "debug" }
+ 	
+-	platforms { "x64", "x86" }
++	platforms { "x64", "x86", "arm" }
+ 	filter "action:xcode4"
+ 		platforms { "x64" }
+ 	filter {}
+@@ -67,6 +67,8 @@ workspace "otfcc"
+ 		architecture "x86"
+ 	filter "platforms:x64"
+ 		architecture "x64"
++	filter "platforms:arm"
++		architecture "arm"
+ 	filter {}
+ 	
+ 	filter "action:vs2017"

pkgs/tools/misc/otfcc/move-makefiles.patch

@@ -0,0 +1,13 @@
+diff --git a/premake5.lua b/premake5.lua
+index 997fd79..54a20a0 100644
+--- a/premake5.lua
++++ b/premake5.lua
+@@ -88,7 +90,7 @@ workspace "otfcc"
+ 		flags { "StaticRuntime" }
+ 		includedirs { "dep/polyfill-msvc" }
+ 	filter "action:gmake"
+-		location "build/gmake"
++		location "."
+ 	filter "action:xcode4"
+ 		location "build/xcode"
+ 	filter {}