Hi cygwin users,
today I saw an issue when trying to use profile guided optimization of g++
(9.3.0) inside cygwin 3.1.4 with path specified
uname -a gives
CYGWIN_NT-10.0 3.1.4(0.340/5 /3) 2020-02-19 x86_64 Cygwin
More specificaly if I try to give a path argument like
-fprofile-generate=profile
-fprofile-use=profile
g++ outputs
profiling:profile#path#to#here\test.gcda:Skip
Sample to reproduce :
test.cc :int main(int , char**) { return 0; }
> g++ -profile-generate=profile test.cc> ./a.exe> g++ -profile-use=profile
> test.cc
will output :
profiling:profile#path#to#here\test.gcda:Skip
and during second compilation g++ will complain about missing profile as i
hasn't been crated.
This is also the case if an absolute path is given, and also if the target
directory already exists.
Without specifiyng a path argument, profile generation and use are fine.
Am i doing something wrong ?
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