CODEWITHSUNDEEP
c++
nakiya
nakiya

Reputation: 11

How to change source path in executable g++

I compile my programs in a compiler machine. Later I run and test the programs in a different environment. If I compile with -fprofile-arcs on then the program tries to write a file in a folder which does not exist in the running environment. Is there a work-around for this problem?

Thanks

Upvotes: 0

Views: 436

Answers (2)

RP.
RP.

Reputation: 725

Nakiya, According to this "-fprofile-arcs Add code so that program flow arcs are instrumented. During execution the program records how many times each branch and call is executed and how many times it is taken or returns. When the compiled program exits it saves this data to a file called auxname.gcda for each source file. The data may be used for profile-directed optimizations (-fbranch-probabilities), or for test coverage analysis (-ftest-coverage). Each object file's auxname is generated from the name of the output file, if explicitly specified and it is not the final executable, otherwise it is the basename of the source file. In both cases any suffix is removed (e.g. foo.gcda for input file dir/foo.c, or dir/foo.gcda for output file specified as -o dir/foo.o)."

Upvotes: 0

amit kumar
amit kumar

Reputation: 21022

Further to RP's answer, I think this would be useful.

if the object file /user/build/foo.o was built with -fprofile-arcs, the final executable will try to create the data file /user/build/foo.gcda when running on the target system. This will fail if the corresponding directory does not exist and it is unable to create it. This can be overcome by, for example, setting the environment as GCOV_PREFIX=/target/run' and GCOV_PREFIX_STRIP=1'. Such a setting will name the data file /target/run/build/foo.gcda.

Upvotes: 1

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