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CTestCoverageCollectGCOV: Improve implementation

Merged CTestCoverageCollectGCOV: Improve implementation
RedDwarf/cmake:better_gcov_coverage into master
Merged Cristian Morales Vega requested to merge RedDwarf/cmake:better_gcov_coverage into master
  1. May 03, 2019
    • Cristian Morales Vega's avatar
      CTestCoverageCollectGCOV: run gcov with -x · 41d262bd
      Cristian Morales Vega authored 
      Using "-x" we avoid overwriting .gcov files from source files in
different paths which happen to have the same name. It's similar to
"-p", but it produces shorter file names, reducing the risk of reaching
the file system limit.
      41d262bd
    • Cristian Morales Vega's avatar
      CTestCoverageCollectGCOV: run gcov only once · 911b9786
      Cristian Morales Vega authored 
      Running gcov once per .gcda file is not only inefficient, it also
generates wrong data since .gcov files can get overwritten and in
general gcov works with less information.

fakegcov.cmake needs to be able to handle multiple .gcda files for the
test to be meaningful.
      911b9786