Switch to mounting the current source in the remote config docker.

Add workaround for the latest toolchain repository not supporting older bazel
versions; only load it conditionally.

PiperOrigin-RevId: 224965872

WORKSPACE

@@ -16,30 +16,27 @@ load("@io_bazel_rules_closure//closure:defs.bzl", "closure_repositories")
 
 closure_repositories()
 
-http_archive(
+load("//third_party/toolchains/preconfig/generate:archives.bzl",
-    name = "base_images_docker",
+     "bazel_toolchains_archive")
-    sha256 = "e2b1b7254270bb7605e814a9dbf6d1e4ae04a11136ff1714fbfdabe3f87f7cf9",
+
-    strip_prefix = "base-images-docker-12801524f867e657fbb5d1a74f31618aff181ac6",
+bazel_toolchains_archive()
-    urls = ["https://github.com/GoogleCloudPlatform/base-images-docker/archive/12801524f867e657fbb5d1a74f31618aff181ac6.tar.gz"],
+
+load(
+    "@bazel_toolchains//repositories:repositories.bzl",
+    bazel_toolchains_repositories = "repositories",
 )
 
-http_archive(
+bazel_toolchains_repositories()
-    name = "bazel_toolchains",
+
-    sha256 = "15b5858b1b5541ec44df31b94c3b8672815b31d71215a98398761ea9f4c4eedb",
+load(
-    strip_prefix = "bazel-toolchains-6200b238c9c2d137c0d9a7262c80cc71d98e692b",
+    "@io_bazel_rules_docker//container:container.bzl",
-    urls = [
+    container_repositories = "repositories",
-        "https://github.com/bazelbuild/bazel-toolchains/archive/6200b238c9c2d137c0d9a7262c80cc71d98e692b.tar.gz",
-    ],
 )
 
-http_archive(
+container_repositories()
-    name = "io_bazel_rules_docker",
-    sha256 = "29d109605e0d6f9c892584f07275b8c9260803bf0c6fcb7de2623b2bedc910bd",
-    strip_prefix = "rules_docker-0.5.1",
-    urls = ["https://github.com/bazelbuild/rules_docker/archive/v0.5.1.tar.gz"],
-)
 
-load("//third_party/toolchains/preconfig/generate:workspace.bzl", "remote_config_workspace")
+load("//third_party/toolchains/preconfig/generate:workspace.bzl",
+     "remote_config_workspace")
 
 remote_config_workspace()
 

tensorflow/opensource_only.files

@@ -49,6 +49,7 @@ tensorflow/third_party/toolchains/preconfig/ubuntu14.04/nccl2/BUILD
 tensorflow/third_party/toolchains/preconfig/generate/workspace.bzl
 tensorflow/third_party/toolchains/preconfig/generate/containers.bzl
 tensorflow/third_party/toolchains/preconfig/generate/generate.bzl
+tensorflow/third_party/toolchains/preconfig/generate/archives.bzl
 tensorflow/third_party/toolchains/preconfig/generate/BUILD
 tensorflow/third_party/toolchains/preconfig/win_1803/bazel_018/BUILD
 tensorflow/third_party/toolchains/preconfig/win_1803/bazel_018/dummy_toolchain.bzl

tensorflow/version_check.bzl

@@ -1,48 +1,52 @@
 """ Helpers to check minimum version of bazel."""
 
 def _extract_version_number(bazel_version):
-  """Extracts the semantic version number from a version string
+    """Extracts the semantic version number from a version string
 
-  Args:
+    Args:
-    bazel_version: the version string that begins with the semantic version
+      bazel_version: the version string that begins with the semantic version
-      e.g. "1.2.3rc1 abc1234" where "abc1234" is a commit hash.
+        e.g. "1.2.3rc1 abc1234" where "abc1234" is a commit hash.
 
-  Returns:
+    Returns:
-    The semantic version string, like "1.2.3".
+      The semantic version string, like "1.2.3".
-  """
+    """
-  for i in range(len(bazel_version)):
+    for i in range(len(bazel_version)):
-    c = bazel_version[i]
+        c = bazel_version[i]
-    if not (c.isdigit() or c == "."):
+        if not (c.isdigit() or c == "."):
-      return bazel_version[:i]
+            return bazel_version[:i]
-  return bazel_version
+    return bazel_version
 
 # Parse the bazel version string from `native.bazel_version`.
 # e.g.
 # "0.10.0rc1 abc123d" => (0, 10, 0)
 # "0.3.0" => (0, 3, 0)
 def _parse_bazel_version(bazel_version):
-  """Parses a version string into a 3-tuple of ints
+    """Parses a version string into a 3-tuple of ints
 
-  int tuples can be compared directly using binary operators (<, >).
+    int tuples can be compared directly using binary operators (<, >).
 
-  Args:
+    Args:
-    bazel_version: the Bazel version string
+      bazel_version: the Bazel version string
 
-  Returns:
+    Returns:
-    An int 3-tuple of a (major, minor, patch) version.
+      An int 3-tuple of a (major, minor, patch) version.
-  """
+    """
 
-  version = _extract_version_number(bazel_version)
+    version = _extract_version_number(bazel_version)
-  return tuple([int(n) for n in version.split(".")])
+    return tuple([int(n) for n in version.split(".")])
 
 def check_bazel_version_at_least(minimum_bazel_version):
-  if "bazel_version" not in dir(native):
+    if "bazel_version" not in dir(native):
-    fail("\nCurrent Bazel version is lower than 0.2.1, expected at least %s\n" % minimum_bazel_version)
+        fail("\nCurrent Bazel version is lower than 0.2.1, expected at least %s\n" % minimum_bazel_version)
-  elif not native.bazel_version:
+    elif not native.bazel_version:
-    print("\nCurrent Bazel is not a release version, cannot check for compatibility.")
+        print("\nCurrent Bazel is not a release version, cannot check for compatibility.")
-    print("Make sure that you are running at least Bazel %s.\n" % minimum_bazel_version)
+        print("Make sure that you are running at least Bazel %s.\n" % minimum_bazel_version)
-    return
+        return
 
-  if _parse_bazel_version(native.bazel_version) < _parse_bazel_version(minimum_bazel_version):
+    if _parse_bazel_version(native.bazel_version) < _parse_bazel_version(minimum_bazel_version):
-    fail("\nCurrent Bazel version is {}, expected at least {}\n".format(
+        fail("\nCurrent Bazel version is {}, expected at least {}\n".format(
-        native.bazel_version, minimum_bazel_version))
+            native.bazel_version,
+            minimum_bazel_version,
+        ))
+
+parse_bazel_version = _parse_bazel_version

third_party/toolchains/preconfig/generate/archives.bzl

@@ -0,0 +1,25 @@
+load("//tensorflow:version_check.bzl", "parse_bazel_version")
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+def bazel_toolchains_archive():
+  if parse_bazel_version(native.bazel_version) >= parse_bazel_version("0.19"):
+    # This version of the toolchains repo is incompatible with older bazel
+    # versions - we can remove this once TensorFlow drops support for bazel
+    # before 0.19.
+    http_archive(
+        name = "bazel_toolchains",
+        sha256 = "41c48a189be489e2d15dec40e0057ea15b95ee5b39cc2a7e6cf663e31432c75e",
+        strip_prefix = "bazel-toolchains-3f8c58fe530fedc446de04673bc1e32985887dea",
+        urls = [
+            "https://github.com/nlopezgi/bazel-toolchains/archive/3f8c58fe530fedc446de04673bc1e32985887dea.tar.gz",
+        ],
+    )
+  else:
+    http_archive(
+        name = "bazel_toolchains",
+        sha256 = "15b5858b1b5541ec44df31b94c3b8672815b31d71215a98398761ea9f4c4eedb",
+        strip_prefix = "bazel-toolchains-6200b238c9c2d137c0d9a7262c80cc71d98e692b",
+        urls = [
+            "https://github.com/bazelbuild/bazel-toolchains/archive/6200b238c9c2d137c0d9a7262c80cc71d98e692b.tar.gz",
+        ],
+    )

third_party/toolchains/preconfig/generate/generate.bzl

@@ -36,9 +36,7 @@ def _tensorflow_rbe_config(name, cuda_version, cudnn_version, python_version, co
             "TF_NCCL_VERSION": "2",
             "CUDNN_INSTALL_PATH": "/usr/lib/x86_64-linux-gnu",
         },
-        # TODO(klimek): We should use the sources that we currently work on, not
+        mount_project = "$(mount_project)",
-        # just the latest snapshot of tensorflow that is checked in.
-        git_repo = "https://github.com/tensorflow/tensorflow",
         tags = ["manual"],
         incompatible_changes_off = True,
     )

third_party/toolchains/preconfig/generate/generate.sh

@@ -46,7 +46,7 @@ echo "CUDA: ${CUDA_VERSION}"
 echo "CUDNN: ${CUDNN_VERSION}"
 echo "NCCL: ${NCCL_VERSION}"
 
-bazel build "${PKG}/generate:${TARGET}"
+bazel build --define=mount_project="${PWD}" "${PKG}/generate:${TARGET}"
 cd "${TEMPDIR}"
 tar xvf "${ROOT}/bazel-bin/${PKG}/generate/${TARGET}_outputs.tar"