.gcda and .gcno files for the library are generated in directory where the .o files of the library were generated. You need to go to that directory and play gcov with the data files and source files. Simply search *.gcda may give you results. --Junchao Zhang On Thu, May 9, 2019 at 3:23 PM Z. <zell08v@xxxxxxxxx> wrote: > Hello, > > I want to use GCOV to measure how many statement/functions of GNU > Scientific Library (GSL) have been reached by a user-defined program. > > The user-defined program is an example from GSL’s manual: > > https://www.gnu.org/software/gsl/manual/html_node/Example-statistical-programs.html > . > Something llke > > *#include <stdio.h> * > *#include <gsl/gsl_statistics.h> * > > *int * > *main(void) * > *{ * > * double data[5] = {17.2, 18.1, 16.5, 18.3, 12.6}; * > *... * > * smallest = gsl_stats_min(data, 1, 5); * > *… * > *return 0; * > *} * > > First, I compiled GSL with relevant flags: ./configure > CFLAGS="-fprofile-arcs -ftest-coverage -g -O0” > > Then, I compiled and linked the example program to GSL: gcc -fprofile-arcs > -ftest-coverage -g -O0 example.c -lgsl -lgslcblas -lm > > At last I ran the example program: LD_LIBRARY_PATH=/usr/local/lib ./a.out > > But, I could only see example.gcov, namely, only coverage info for the > example seems to be produced. Where did it go wrong? How can I also get > coverage for the code in GSL part? > > Thanks. > > Zhoulai >
