Make //tols/cpp/test start from the distribution artifact

The docker tests in //tools/cpp/test still assume that the sources
are enough to just compile.sh to bootstrap a bazel binary. Fix this,
by using the distribution archive instead.

While there, also add a target for the distribution archive as tar.

--
Change-Id: Ic31bb95da0165f83a14537a1719c27e5067d0d65
Reviewed-on: https://cr.bazel.build/7531
MOS_MIGRATED_REVID=140134322

1 files changed, 13 insertions, 0 deletions

diff --git a/BUILD b/BUILD
index 15d5460c0e..b0fe401970 100644
--- a/BUILD
+++ b/BUILD
@@ -71,3 +71,16 @@ genrule(
     # Public but bazel-only visibility.
     visibility = ["//:__subpackages__"],
 )
+
+genrule(
+    name = "bazel-distfile-tar",
+    srcs = [
+        ":bazel-srcs",
+        "//src:derived_java_srcs",
+    ],
+    outs = ["bazel-distfile.tar"],
+    cmd = "env USE_TAR=YES $(location :combine_distfiles.sh) $@ $(SRCS)",
+    tools = ["combine_distfiles.sh"],
+    # Public but bazel-only visibility.
+    visibility = ["//:__subpackages__"],
+)