Remove support for -extra_checks:off

it has been replaced by -XepDisableAllChecks, which disables all Error Prone
checks instead of disabling the plugin. Disabling the plugin entirely breaks
handling of other -Xep flags.

RELNOTES[INC]: -extra_checks:off is no longer supported; use -XepDisableAllChecks instead

PiperOrigin-RevId: 161127522

2 files changed, 60 insertions, 0 deletions

diff --git a/site/blog/_posts/2015-06-25-ErrorProne.md b/site/blog/_posts/2015-06-25-ErrorProne.md
new file mode 100644
index 0000000000..d79d87accb
--- /dev/null
+++ b/site/blog/_posts/2015-06-25-ErrorProne.md
@@ -0,0 +1,17 @@
+---
+layout: posts
+title: Checking your Java errors with Error Prone.
+---
+
+We recently open-sourced our support for [Error Prone](http://errorprone.info).
+[Error Prone](http://errorprone.info) checks for common mistakes in Java code
+that will not be caught by the compiler.
+
+We turned [Error Prone](http://errorprone.info) on by default but you can easily
+turn it off by using the Javac option `-XepDisableAllChecks`. To do so, simply
+specify `--javacopt='XepDisableAllChecks` to the list of Bazel's options. You
+can also tune the checks error-prone will perform by using the [`-Xep:`
+flags](http://errorprone.info/docs/flags).
+
+See the [documentation of Error Prone](http://errorprone.info/docs/installation) for more
+on Error Prone.
diff --git a/site/blog/_posts/2015-07-08-Java-Configuration.md b/site/blog/_posts/2015-07-08-Java-Configuration.md
new file mode 100644
index 0000000000..2d0a3c70c5
--- /dev/null
+++ b/site/blog/_posts/2015-07-08-Java-Configuration.md
@@ -0,0 +1,43 @@
+---
+layout: posts
+title: Configuring your Java builds
+---
+
+Let say that you want to build for Java 8 and Error Prone checks off but keep
+the tools directory provided with Bazel in the package path, you could do that
+by having the following rc file:
+
+```
+build --javacopt=-XepDisableAllChecks
+build --javacopt="-source 8 -target 8"
+```
+
+However, the file would becomes quickly overloaded, especially if you take
+all languages and options into account. Instead, you can tweak the
+[java_toolchain](https://github.com/bazelbuild/bazel/tree/0e1680e58f01f3d443f7e68865b5a56b76c9dadf/tools/jdk/BUILD#L73)
+rule that specifies the various options for the java compiler. So in a
+BUILD file:
+
+```python
+java_toolchain(
+    name = "my_toolchain",
+    encoding = "UTF-8",
+    source_version = "8",
+    target_version = "8",
+    misc = [
+        "-Xep:CollectionIncompatibleType:ERROR", # http://errorprone.info/bugpattern/CollectionIncompatibleType
+    ],
+)
+```
+
+And to keep it out of the tools directory (or you need to copy the rest
+of the package), you can redirect the default one in a bazelrc:
+
+```
+build --java_toolchain=//package:my_toolchain
+```
+
+In the future, toolchain rules should be the configuration points for all
+the languages but it is a long road. We also want to make it easier to
+rebind the toolchain using the `bind` rule in the WORKSPACE file.
+