Update to bazel-0.18.0 and use try-import

Bazel-0.18.0 adds a try-import option that will non-fatally try and
import a file. Use this for the configure options so that .bazelrc does
not need to change. ./configure rewriting .bazelrc makes using the git
repo annoying because the file is changed.

The allowed bazel range is now 0.18.0-0.20.0 inclusive. The env var
TF_IGNORE_MAX_BAZEL_VERSION can be set to skip the max bazel version
check.

Also optionally import a /.bazelrc.user file that is gitignored so
user-specific options can go in there.

Fixes: tensorflow#22762
Fixes: tensorflow#22906
Signed-off-by: Jason Zaman <[email protected]>

Author: perfinion

tools/bazel.rc .bazelrc

@@ -93,3 +93,11 @@ build:dynamic_kernels --copt=-DAUTOLOAD_DYNAMIC_KERNELS
 build --define=PREFIX=/usr
 build --define=LIBDIR=$(PREFIX)/lib
 build --define=INCLUDEDIR=$(PREFIX)/include
+
+# Default options should come above this line
+
+# Options from ./configure
+try-import %workspace%/.tf_configure.bazelrc
+
+# Put user-specific options in .bazelrc.user
+try-import %workspace%/.bazelrc.user

.gitignore

@@ -1,7 +1,7 @@
 .DS_Store
 .ipynb_checkpoints
 node_modules
-/.bazelrc
+/.bazelrc.user
 /.tf_configure.bazelrc
 /bazel-*
 /bazel_pip

WORKSPACE

@@ -47,7 +47,7 @@ remote_config_workspace()
 # files, in case the parsing of those build files depends on the bazel
 # version we require here.
 load("//tensorflow:version_check.bzl", "check_bazel_version_at_least")
-check_bazel_version_at_least("0.15.0")
+check_bazel_version_at_least("0.18.0")
 
 load("//tensorflow:workspace.bzl", "tf_workspace")
 

configure.py

@@ -255,18 +255,6 @@ def setup_python(environ_cp):
 def reset_tf_configure_bazelrc():
   """Reset file that contains customized config settings."""
   open(_TF_BAZELRC, 'w').close()
-  bazelrc_path = os.path.join(_TF_WORKSPACE_ROOT, '.bazelrc')
-
-  data = []
-  if os.path.exists(bazelrc_path):
-    with open(bazelrc_path, 'r') as f:
-      data = f.read().splitlines()
-  with open(bazelrc_path, 'w') as f:
-    for l in data:
-      if _TF_BAZELRC_FILENAME in l:
-        continue
-      f.write('%s\n' % l)
-    f.write('import %%workspace%%/%s\n' % _TF_BAZELRC_FILENAME)
 
 def cleanup_makefile():
   """Delete any leftover BUILD files from the Makefile build.
@@ -488,11 +476,11 @@ def check_bazel_version(min_version, max_version):
   if curr_version_int < min_version_int:
     print('Please upgrade your bazel installation to version %s or higher to '
           'build TensorFlow!' % min_version)
-    sys.exit(0)
-  if curr_version_int > max_version_int:
+    sys.exit(1)
+  if curr_version_int > max_version_int and not 'TF_IGNORE_MAX_BAZEL_VERSION' in os.environ:
     print('Please downgrade your bazel installation to version %s or lower to '
           'build TensorFlow!' % max_version)
-    sys.exit(0)
+    sys.exit(1)
   return curr_version
 
 
@@ -1565,11 +1553,9 @@ def main():
   # environment variables.
   environ_cp = dict(os.environ)
 
-  check_bazel_version('0.15.0', '0.20.0')
+  check_bazel_version('0.18.0', '0.20.0')
 
   reset_tf_configure_bazelrc()
-  # Explicitly import tools/bazel.rc, this is needed for Bazel 0.19.0 or later
-  write_to_bazelrc('import %workspace%/tools/bazel.rc')
 
   cleanup_makefile()
   setup_python(environ_cp)

tensorflow/tools/ci_build/install/install_bazel.sh

@@ -15,7 +15,7 @@
 # ==============================================================================
 
 # Select bazel version.
-BAZEL_VERSION="0.15.0"
+BAZEL_VERSION="0.18.0"
 
 set +e
 local_bazel_ver=$(bazel version 2>&1 | grep -i label | awk '{print $3}')

tensorflow/tools/ci_build/install/install_bazel_from_source.sh

@@ -18,7 +18,7 @@
 # It will compile bazel from source and install it in /usr/local/bin
 
 # Select bazel version.
-BAZEL_VERSION="0.15.0"
+BAZEL_VERSION="0.18.0"
 
 set +e
 local_bazel_ver=$(bazel version 2>&1 | grep -i label | awk '{print $3}')

tensorflow/tools/docker/Dockerfile.devel

@@ -65,7 +65,7 @@ RUN echo "startup --batch" >>/etc/bazel.bazelrc
 RUN echo "build --spawn_strategy=standalone --genrule_strategy=standalone" \
     >>/etc/bazel.bazelrc
 # Install the most recent bazel release.
-ENV BAZEL_VERSION 0.15.0
+ENV BAZEL_VERSION 0.18.0
 WORKDIR /
 RUN mkdir /bazel && \
     cd /bazel && \

tensorflow/tools/docker/Dockerfile.devel-gpu

@@ -87,7 +87,7 @@ RUN echo "startup --batch" >>/etc/bazel.bazelrc
 RUN echo "build --spawn_strategy=standalone --genrule_strategy=standalone" \
     >>/etc/bazel.bazelrc
 # Install the most recent bazel release.
-ENV BAZEL_VERSION 0.15.0
+ENV BAZEL_VERSION 0.18.0
 WORKDIR /
 RUN mkdir /bazel && \
     cd /bazel && \

tensorflow/tools/docker/Dockerfile.devel-mkl

@@ -88,7 +88,7 @@ RUN echo "startup --batch" >>/etc/bazel.bazelrc
 RUN echo "build --spawn_strategy=standalone --genrule_strategy=standalone" \
     >>/etc/bazel.bazelrc
 # Install the most recent bazel release.
-ENV BAZEL_VERSION 0.15.0
+ENV BAZEL_VERSION 0.18.0
 WORKDIR /
 RUN mkdir /bazel && \
     cd /bazel && \

tensorflow/tools/docker/Dockerfile.devel-mkl-horovod

@@ -79,7 +79,7 @@ RUN echo "startup --batch" >>/etc/bazel.bazelrc
 RUN echo "build --spawn_strategy=standalone --genrule_strategy=standalone" \
     >>/etc/bazel.bazelrc
 # Install the most recent bazel release.
-ENV BAZEL_VERSION 0.15.0
+ENV BAZEL_VERSION 0.18.0
 WORKDIR /
 RUN mkdir /bazel && \
     cd /bazel && \