Validating spec
 -> libwebp (0.4.3)
    - WARN  | [libwebp/core, libwebp/utils, libwebp/dsp, and more...] xcodebuild:  libwebp/src/utils/bit_writer.c:262:11: warning: code will never be executed [-Wunreachable-code]
    - NOTE  | [libwebp/core, libwebp/utils, libwebp/dsp, and more...] xcodebuild:  libwebp/src/utils/bit_writer.c:261:29: note: silence by adding parentheses to mark code as explicitly dead
    - ERROR | [libwebp/webp, libwebp/core, libwebp/utils, and more...] xcodebuild: Returned an unsuccessful exit code. You can use `--verbose` for more information.
    - NOTE  | [libwebp/webp, libwebp/core, libwebp/utils, and more...] xcodebuild:  xcodebuild: error: SDK "appletvsimulator" cannot be located.

{
  "name": "libwebp",
  "version": "0.4.3",
  "summary": "Library to encode and decode images in WebP format.",
  "homepage": "https://developers.google.com/speed/webp/",
  "authors": "Google Inc.",
  "platforms": {
    "ios": "6.0"
  },
  "license": {
    "type": "BSD",
    "file": "COPYING"
  },
  "source": {
    "git": "https://chromium.googlesource.com/webm/libwebp",
    "tag": "v0.4.3"
  },
  "compiler_flags": "-D_THREAD_SAFE",
  "requires_arc": false,
  "subspecs": [
    {
      "name": "webp",
      "header_dir": "webp",
      "source_files": "src/webp/*.h"
    },
    {
      "name": "core",
      "source_files": [
        "src/utils/*.{h,c}",
        "src/dsp/*.{h,c}",
        "src/enc/*.{h,c}",
        "src/dec/*.{h,c}"
      ],
      "dependencies": {
        "libwebp/webp": [

        ]
      }
    },
    {
      "name": "utils",
      "dependencies": {
        "libwebp/core": [

        ]
      }
    },
    {
      "name": "dsp",
      "dependencies": {
        "libwebp/core": [

        ]
      }
    },
    {
      "name": "enc",
      "dependencies": {
        "libwebp/core": [

        ]
      }
    },
    {
      "name": "dec",
      "dependencies": {
        "libwebp/core": [

        ]
      }
    },
    {
      "name": "demux",
      "source_files": "src/demux/*.{h,c}",
      "dependencies": {
        "libwebp/core": [

        ]
      }
    },
    {
      "name": "mux",
      "source_files": "src/mux/*.{h,c}",
      "dependencies": {
        "libwebp/core": [

        ]
      }
    }
  ]
}