HowTo: Using gcov (the GNU coverage tool) with LMDZ : Différence entre versions
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If you want a summary of the lines (and branches) in your code that are actually executed, you can use the GNU [[https://gcc.gnu.org/onlinedocs/gcc/Gcov.html coverage tool]]. This entails the following three steps: | If you want a summary of the lines (and branches) in your code that are actually executed, you can use the GNU [[https://gcc.gnu.org/onlinedocs/gcc/Gcov.html coverage tool]]. This entails the following three steps: | ||
Version du 28 avril 2022 à 17:41
If you want a summary of the lines (and branches) in your code that are actually executed, you can use the GNU [coverage tool]. This entails the following three steps:
- compiling your code with the right options
- running the code to output the statistics that gcov will analyze
- running gcov on the data file created in the previous step
Running gcov on LMDZ
We will be using [gcovr] a utility using gcov and providing different types os outputs
Compiling LMDZ
You will need to add the following flags to your compilation flags in the arch.fcm.file:
%BASE_FFLAGS -cpp -ffree-line-length-0 -fdefault-real-8 -DNC_DOUBLE -pg --coverage -fprofile-arcs -ftest-coverage -fprofile-abs-path
Running LMDZ
You just run gcm.e as you usually do. This will create a bunch of gcda and gcno files that are used by gcov in the following step
Running gcovr
You then launch the gcovr command as
gcovr -r . -v --html-details gcm_details libo/local_32x32x39_phylmd_seq.e/.config/tmp/
^
this is where the gcda and gcno files are saved by the compiler
to create html files
