From 158cd6220231fcf758a45c2dcd40d93cd0aec9e0 Mon Sep 17 00:00:00 2001
From: "A. Unique TensorFlower" <gardener@tensorflow.org>
Date: Wed, 11 Jul 2018 11:09:16 -0700
Subject: Split out lib/png into a separate library from the rest of TensorFlow
 to avoid unnecessary transitive dependencies.

PiperOrigin-RevId: 204154526
---
 tensorflow/contrib/tensorboard/db/BUILD            |  1 +
 tensorflow/core/BUILD                              | 36 ++++++++++++++++++++++
 tensorflow/core/kernels/BUILD                      |  3 +-
 .../core/platform/default/build_config/BUILD       | 12 ++++++--
 4 files changed, 49 insertions(+), 3 deletions(-)

diff --git a/tensorflow/contrib/tensorboard/db/BUILD b/tensorflow/contrib/tensorboard/db/BUILD
index 3f6b4cdc9a..6507546ee9 100644
--- a/tensorflow/contrib/tensorboard/db/BUILD
+++ b/tensorflow/contrib/tensorboard/db/BUILD
@@ -106,6 +106,7 @@ cc_library(
         "//tensorflow/core:framework",
         "//tensorflow/core:lib",
         "//tensorflow/core:lib_internal",
+        "//tensorflow/core:png_internal",
         "//tensorflow/core:protos_all_cc",
     ],
 )
diff --git a/tensorflow/core/BUILD b/tensorflow/core/BUILD
index 9d4f7092fa..dbe87a6dbb 100644
--- a/tensorflow/core/BUILD
+++ b/tensorflow/core/BUILD
@@ -1952,8 +1952,10 @@ LIB_INTERNAL_PRIVATE_HEADERS = ["framework/resource_handle.h"] + glob(
         "**/*test*",
         "lib/gif/**/*",
         "lib/jpeg/**/*",
+        "lib/png/**/*",
         "platform/gif.h",
         "platform/jpeg.h",
+        "platform/png.h",
         "platform/**/cuda.h",
         "platform/**/stream_executor.h",
     ],
@@ -2048,6 +2050,7 @@ cc_library(
             "lib/hash/crc32c_accelerate.cc",
             "lib/gif/**/*",
             "lib/jpeg/**/*",
+            "lib/png/**/*",
             "platform/**/env_time.cc",
             "platform/**/cuda_libdevice_path.cc",
             "platform/**/device_tracer.cc",
@@ -2143,6 +2146,39 @@ cc_library(
     ],
 )
 
+cc_library(
+    name = "png_internal",
+    srcs = ["lib/png/png_io.cc"],
+    hdrs = [
+        "lib/bfloat16/bfloat16.h",
+        "lib/core/casts.h",
+        "lib/core/stringpiece.h",
+        "lib/png/png_io.h",
+        "platform/byte_order.h",
+        "platform/cpu_info.h",
+        "platform/default/integral_types.h",
+        "platform/default/logging.h",
+        "platform/logging.h",
+        "platform/macros.h",
+        "platform/platform.h",
+        "platform/png.h",
+        "platform/types.h",
+    ],
+    copts = tf_copts(),
+    linkopts = select({
+        "//tensorflow:freebsd": [],
+        "//tensorflow:windows": [],
+        "//tensorflow:windows_msvc": [],
+        "//conditions:default": ["-ldl"],
+    }),
+    deps = [
+        ":lib",
+        ":lib_internal",
+        "//tensorflow/core/platform/default/build_config:png",
+        "@zlib_archive//:zlib",
+    ],
+)
+
 cc_library(
     name = "tflite_portable_logging",
     srcs = [],
diff --git a/tensorflow/core/kernels/BUILD b/tensorflow/core/kernels/BUILD
index 3b3e1af2d5..3426ea8aa2 100644
--- a/tensorflow/core/kernels/BUILD
+++ b/tensorflow/core/kernels/BUILD
@@ -2086,6 +2086,7 @@ IMAGE_DEPS = [
     "//tensorflow/core:jpeg_internal",
     "//tensorflow/core:lib",
     "//tensorflow/core:lib_internal",
+    "//tensorflow/core:png_internal",
     "//tensorflow/core:protos_all_cc",
 ]
 
@@ -2660,7 +2661,7 @@ tf_kernel_library(
 tf_kernel_library(
     name = "summary_image_op",
     prefix = "summary_image_op",
-    deps = LOGGING_DEPS,
+    deps = LOGGING_DEPS + ["//tensorflow/core:png_internal"],
 )
 
 tf_kernel_library(
diff --git a/tensorflow/core/platform/default/build_config/BUILD b/tensorflow/core/platform/default/build_config/BUILD
index c17e4810d5..da1f66dc67 100644
--- a/tensorflow/core/platform/default/build_config/BUILD
+++ b/tensorflow/core/platform/default/build_config/BUILD
@@ -146,7 +146,6 @@ cc_library(
         "@farmhash_archive//:farmhash",
         "@fft2d",
         "@highwayhash//:sip_hash",
-        "@png_archive//:png",
     ],
 )
 
@@ -161,7 +160,7 @@ cc_library(
         "@farmhash_archive//:farmhash",
         "@fft2d",
         "@highwayhash//:sip_hash",
-        "@png_archive//:png",
+        "@zlib_archive//:zlib",
     ],
 )
 
@@ -186,6 +185,15 @@ cc_library(
     ],
 )
 
+cc_library(
+    name = "png",
+    copts = tf_copts(),
+    deps = [
+        "@png_archive//:png",
+        "@zlib_archive//:zlib",
+    ],
+)
+
 cc_library(
     name = "protos_cc_impl",
     copts = tf_copts(),
-- 
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