Driver: Sketch driver support for a CC_LOG_DIAGNOSTICS options, similar to the

existing CC_PRINT_OPTIONS and CC_PRINT_HEADERS, which can be used to
transparently capture the compiler diagnostics from a build.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129082 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 10 insertions, 0 deletions

diff --git a/include/clang/Basic/DiagnosticFrontendKinds.td b/include/clang/Basic/DiagnosticFrontendKinds.td
index 30706769d4..6ad9529c5f 100644
--- a/include/clang/Basic/DiagnosticFrontendKinds.td
+++ b/include/clang/Basic/DiagnosticFrontendKinds.td
@@ -79,6 +79,8 @@ def warn_fe_macro_contains_embedded_newline : Warning<
     "macro '%0' contains embedded newline, text after the newline is ignored.">;
 def warn_fe_cc_print_header_failure : Warning<
     "unable to open CC_PRINT_HEADERS file: %0 (using stderr)">;
+def warn_fe_cc_log_diagnositcs_failure : Warning<
+    "unable to open CC_LOG_DIAGNOSTICS file: %0 (using stderr)">;
 
 def err_verify_missing_start : Error<
     "cannot find start ('{{') of expected %0">;
diff --git a/include/clang/Driver/Driver.h b/include/clang/Driver/Driver.h
index 92497ea28d..56afa02b30 100644
--- a/include/clang/Driver/Driver.h
+++ b/include/clang/Driver/Driver.h
@@ -106,6 +106,9 @@ public:
   /// The file to log CC_PRINT_HEADERS output to, if enabled.
   const char *CCPrintHeadersFilename;
 
+  /// The file to log CC_LOG_DIAGNOSTICS output to, if enabled.
+  const char *CCLogDiagnosticsFilename;
+
   /// Whether the driver should follow g++ like behavior.
   unsigned CCCIsCXX : 1;
 
@@ -126,6 +129,11 @@ public:
   /// information to CCPrintHeadersFilename or to stderr.
   unsigned CCPrintHeaders : 1;
 
+  /// Set CC_LOG_DIAGNOSTICS mode, which causes the frontend to log diagnostics
+  /// to CCLogDiagnosticsFilename or to stderr, in a stable machine readable
+  /// format.
+  unsigned CCLogDiagnostics : 1;
+
 private:
   /// Name to use when calling the generic gcc.
   std::string CCCGenericGCCName;