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Clang-Tidy: copy stdout to sterr; ignore original stderr 

Clang-Tidy writes the number of warnings, the number of suppressed
warnings, and instructions on how to suppress warnings to stderr.  Since
each source file is checked individually, this repetitive information is
disturbing and should be suppressed.

The actual warning messages are written to stdout.  Some IDEs (eg.
QtCreator) analyze only stderr for issues.  Redirecting Clang-Tidy's
stdout to stderr makes sure the warnings are correctly displayed.
This commit is contained in:
Daniel Pfeifer 2016-04-26 22:50:54 +02:00 committed by Brad King
parent b8a8dfec36
commit 04d74a7f89
1 changed files with 7 additions and 3 deletions
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10
Source/cmcmd.cxx
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@ -389,13 +389,17 @@ int cmcmd::ExecuteCMakeCommand(std::vector<std::string>& args)
tidy_cmd.push_back("--");
tidy_cmd.insert(tidy_cmd.end(), orig_cmd.begin()+1, orig_cmd.end());
// Run the tidy command line.
if(!cmSystemTools::RunSingleCommand(tidy_cmd, 0, 0, &ret, 0,
cmSystemTools::OUTPUT_PASSTHROUGH))
// Run the tidy command line. Capture its stdout and hide its stderr.
std::string stdOut;
if(!cmSystemTools::RunSingleCommand(tidy_cmd, &stdOut, 0, &ret, 0,
cmSystemTools::OUTPUT_NONE))
{
std::cerr << "Error running '" << tidy_cmd[0] << "'\n";
return 1;
}
// Output the stdout from clang-tidy to stderr
std::cerr << stdOut;
}
// Now run the real compiler command and return its result value.