Add -fansi-escape-codes option

Some build systems use pipes for stdin/stderr. On nix-ish platforms colored
output can be forced by -fcolor-diagnostics. On Windows this option has
no effect in these cases because LLVM uses the console API (which only
operates on the console buffer) even if a console wrapper capable of
interpreting ANSI escape codes is used.

The -fansi-escape-codes option allows switching from the console API to
ANSI escape codes. It has no effect on other platforms.

llvm-svn: 190464

1 files changed, 3 insertions, 0 deletions

diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 79cdb042a95..d72358dca00 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -3370,6 +3370,9 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
       (ShowColors == Colors_Auto && llvm::sys::Process::StandardErrHasColors()))
     CmdArgs.push_back("-fcolor-diagnostics");
 
+  if (Args.hasArg(options::OPT_fansi_escape_codes))
+    CmdArgs.push_back("-fansi-escape-codes");
+
   if (!Args.hasFlag(options::OPT_fshow_source_location,
                     options::OPT_fno_show_source_location))
     CmdArgs.push_back("-fno-show-source-location");