For cilkplus, the pragma cilk grainsize doesn't seems to accept preprocessor variables. This bug has been reported on the gcc bugtracker: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69826 But the following code works for gcc 5.3.0, but not for gcc fedora 5.3.1. Here is a small example: test.cpp #include <cilk/cilk.h> #define CILK_FOR_GRAINSIZE 128 void CoinAbcScatterUpdate(int number) { int result = 0; #pragma cilk grainsize=CILK_FOR_GRAINSIZE cilk_for(int j=0; j < number; j+=2) { result+=j; } } The compilation: $ g++ -c -fcilkplus test.cpp -o test.o The Error message: test.cpp: Dans la fonction ‘void CoinAbcScatterUpdate(int)’: test.cpp:9:24: erreur: ‘CILK_FOR_GRAINSIZE’ was not declared in this scope #pragma cilk grainsize=CILK_FOR_GRAINSIZE ^ test.cpp:9:9: erreur: invalid grainsize for _Cilk_for #pragma cilk grainsize=CILK_FOR_GRAINSIZE ^ If I replace #define CILK_FOR_GRAINSIZE 128 by int CILK_FOR_GRAINSIZE = 128; then the compilation went fine.
Fixed on https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69826
Fixed for f24+ so far, in gcc-6.0.0-0.13.fc24 and later.
So can we CLOSED|RAWHIDE?
Eh, didn't mean to close it really.
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