A Makefile for code coverage report with C++
Posted by: nico on 
Aug 30th, 2011 | 
Filed under: Makefiles
So far you should know how to use makefiles and you should have a nice testable project. Then you have everything ready to get a coverage report. Yeah, using makefiles, you guessed!
This time we’ll depend on two tools, gcov and gtest. These are in Ubuntu’s repositories, so you should have no problem getting them. I won’t even bother to explain this makefile (not because it’s obvious but because I don’t really remember how it works. I wrote this over a year ago).
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.PHONY: clean coverage_report
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coverage_report:
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# Reset code coverage counters and clean up previous reports
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rm -rf coverage_report
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lcov –zerocounters –directory .
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$(MAKE) COMPILE_TYPE=code_coverage &&\
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$(MAKE) COMPILE_TYPE=code_coverage test
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lcov –capture –directory $(BIN_DIR)/$(OBJ_DIR)/code_coverage –base-directory . -o salida.out &&\
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lcov –remove salida.out "*usr/include*" -o salida.out &&\
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genhtml -o coverage_report salida.out
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rm salida.out
Bonus makefile target: make your code pretty:
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.PHONY: pretty
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pretty:
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find -L|egrep ‘\.(cpp|h|hh)$$’|egrep -v ‘svn|_Test.cpp$$’ | xargs astyle –options=none
Remember to change your astyle options as needed.
Bonus II: Example project using gcov and gtest: gcov_gtest_sample.tar. The irony? It doesn’t use my common makefile, it predates it.
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