bazel - a fast, scalable, multi-language and extensible build system

	Commit message (Collapse)	Author	Age
*	Add --filter_sources flag to LcovMerger.	iirina	2018-08-14
\| \| \| \| \| \| \| \| \| \| \| \|	When the `--filter_sources` flag is used `LcovMerger` excludes from the merged coverage the sources whose names match any of the regex in the flag. The value of `--filter_sources` is a list of regex separated by `,`. This flag comes as a preparation for using `gcov` instead of `lcov` for collecting coverage data for C++. The flag was not needed before because `lcov` has some functionality for excluding some files (e.g. `--no-external` to ignore coverage data for system files). Closes #5834. PiperOrigin-RevId: 208606867
*	Implement LcovMerger.	elenairina	2018-06-11
	LcovMerger is a tool that merges all the intermediate lcov tracefiles (with .dat extension) found under a coverage directory and prints the merged tracefile to a given output file. A custom implementation for merging lcov tracefiles is needed because the merging functionality of lcov itself is very slow. LcovMerger is required to get a single coverage report (lcov tracefile) from a bazel coverage command that executes multiple tests. ATM LcovMerger is only invoked by tools/test/collect_coverage.sh that collects and merges the tracefiles from a single test invocation. It will also be used from a CoverageReportAction. Progress on #5246. PiperOrigin-RevId: 200054506