commit a6f0f13c4ab76c337e29cbb2b381d798e6d40953
author Yun Peng <pcloudy@google.com> Wed Jun 28 14:55:37 2017 +0200
committer Marcel Hlopko <hlopko@google.com> Wed Jun 28 15:27:33 2017 +0200
tree 943c169cacc09f5fb49292ae7c09aac4eeb3b99c
parent 218c36341b2911002164c6ccac9decf4fed9e380

Output more debug information when running python tests

This is for debugging https://github.com/bazelbuild/bazel/issues/3273

Change-Id: I84e260ae1a22147fed0cffc2960352c77af2cf58
PiperOrigin-RevId: 160399209

tools/cpp/cc_configure.bzl

diff --git a/tools/cpp/cc_configure.bzl b/tools/cpp/cc_configure.bzl
index 79fb8ba..c6eb2b8 100644
--- a/tools/cpp/cc_configure.bzl
+++ b/tools/cpp/cc_configure.bzl
@@ -51,6 +51,7 @@
         "BAZEL_VC",
         "BAZEL_VS",
         "CC",
+        "CC_CONFIGURE_DEBUG",
         "CC_TOOLCHAIN_NAME",
         "CPLUS_INCLUDE_PATH",
         "CUDA_COMPUTE_CAPABILITIES",

tools/cpp/lib_cc_configure.bzl

diff --git a/tools/cpp/lib_cc_configure.bzl b/tools/cpp/lib_cc_configure.bzl
index e265c3b..2287955 100644
--- a/tools/cpp/lib_cc_configure.bzl
+++ b/tools/cpp/lib_cc_configure.bzl
@@ -115,3 +115,9 @@
       out,
       Label("@bazel_tools//tools/cpp:%s.tpl" % template),
       substitutions)
+
+
+def is_cc_configure_debug(repository_ctx):
+  """Returns True if CC_CONFIGURE_DEBUG is set to 1."""
+  env = repository_ctx.os.environ
+  return "CC_CONFIGURE_DEBUG" in env and env["CC_CONFIGURE_DEBUG"] == "1"

tools/cpp/windows_cc_configure.bzl

diff --git a/tools/cpp/windows_cc_configure.bzl b/tools/cpp/windows_cc_configure.bzl
index 5d823a3..849c7f5 100644
--- a/tools/cpp/windows_cc_configure.bzl
+++ b/tools/cpp/windows_cc_configure.bzl
@@ -24,6 +24,7 @@
     "which_cmd",
     "execute",
     "tpl",
+    "is_cc_configure_debug",
 )
 
 
@@ -150,6 +151,9 @@
     if vc_dir:
       break
     result = repository_ctx.execute([reg_binary, "query", "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\VisualStudio\\SxS\\VC7", "/v", version])
+    if is_cc_configure_debug(repository_ctx):
+      auto_configure_warning("registry query result for VC %s:\n\nSTDOUT(start)\n%s\nSTDOUT(end)\nSTDERR(start):\n%s\nSTDERR(end)\n" %
+                             (version, result.stdout, result.stderr))
     if not result.stderr:
       for line in result.stdout.split("\n"):
         line = line.strip()